{"title":"HDPE Pond Liners UK | 25-40 Year Guarantee | Industrial Grade","description":"\u003ch2\u003eHDPE Pond Liners UK — Industrial Grade Geomembrane for Commercial \u0026amp; Civil Applications\u003c\/h2\u003e\n\n\u003cp\u003eHDPE (high-density polyethylene) geomembrane is the pond liner of choice for commercial ponds, SuDS attenuation ponds, irrigation reservoirs, industrial containment, and any application requiring a documented design life of 40–60 years with testable seam integrity. Our HDPE pond liners comply with GRI-GM13, the international benchmark standard for geomembrane quality.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose HDPE?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeldable seams:\u003c\/strong\u003e Hot-wedge fusion welding produces dual-track seams that can be 100% air pressure tested — providing documented proof of watertightness not possible with EPDM or butyl\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGRI-GM13 compliance:\u003c\/strong\u003e All material properties are tested and certified against minimum average roll values — density, tensile strength, elongation, puncture resistance, carbon black, UV resistance, and stress crack resistance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign life 40–60 years:\u003c\/strong\u003e Arrhenius modelling data from leading manufacturers supports 40–60 year field service life at UK ambient temperatures\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad chemical resistance:\u003c\/strong\u003e Resists virtually all acids, alkalis, and aqueous solutions — essential for SuDS, aquaculture, and containment applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge panel sizes:\u003c\/strong\u003e HDPE available in panel widths up to 9m — minimises seam frequency on large ponds\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eGRI-GM13 Property Table — Our HDPE Geomembrane\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003e0.75mm\u003c\/th\u003e\n\u003cth\u003e1.0mm\u003c\/th\u003e\n\u003cth\u003e1.5mm\u003c\/th\u003e\n\u003cth\u003eTest Method\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDensity (g\/cm³)\u003c\/td\u003e\n\u003ctd\u003e≥0.940\u003c\/td\u003e\n\u003ctd\u003e≥0.940\u003c\/td\u003e\n\u003ctd\u003e≥0.940\u003c\/td\u003e\n\u003ctd\u003eASTM D792\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Yield (kN\/m)\u003c\/td\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e22\u003c\/td\u003e\n\u003ctd\u003eASTM D6693\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElongation at Break (%)\u003c\/td\u003e\n\u003ctd\u003e700\u003c\/td\u003e\n\u003ctd\u003e700\u003c\/td\u003e\n\u003ctd\u003e700\u003c\/td\u003e\n\u003ctd\u003eASTM D6693\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePuncture Resistance (N)\u003c\/td\u003e\n\u003ctd\u003e240\u003c\/td\u003e\n\u003ctd\u003e320\u003c\/td\u003e\n\u003ctd\u003e480\u003c\/td\u003e\n\u003ctd\u003eASTM D4833\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCarbon Black (%)\u003c\/td\u003e\n\u003ctd\u003e2–3\u003c\/td\u003e\n\u003ctd\u003e2–3\u003c\/td\u003e\n\u003ctd\u003e2–3\u003c\/td\u003e\n\u003ctd\u003eASTM D4218\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOIT Standard (min)\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003ctd\u003eASTM D3895\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eHDPE Applications\u003c\/h2\u003e\n\u003ch3\u003eSuDS Attenuation Ponds\u003c\/h3\u003e\n\u003cp\u003eHDPE 1.0mm with hot-wedge welded seams is the near-universal specification for LLFA-adopted SuDS attenuation ponds. Full CQA documentation available for adoption submissions. See our \u003ca href=\"\/pages\/suds-pond-liner-specification-uk\"\u003eSuDS pond liner specification guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eAgricultural Irrigation Reservoirs\u003c\/h3\u003e\n\u003cp\u003eHDPE 0.75–1.0mm for farm reservoirs and irrigation storage. Chemical resistance to fertilisers and agrochemicals. Reduces water loss from seepage by 90%+.\u003c\/p\u003e\n\u003ch3\u003eAquaculture\u003c\/h3\u003e\n\u003cp\u003eSmooth HDPE 1.0mm for fish farm ponds and raceways. NSF 61 grade available for food production applications. See our \u003ca href=\"\/pages\/pond-liner-for-aquaculture-fish-farming-uk\"\u003eaquaculture liner guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eCommercial Ornamental Ponds\u003c\/h3\u003e\n\u003cp\u003eHDPE for large-format hotel, landscape, and public realm water features where weld integrity documentation is required.\u003c\/p\u003e\n\n\u003ch2\u003eSmooth vs Textured HDPE\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eSmooth HDPE:\u003c\/strong\u003e Standard specification for pond bases and slopes flatter than 3:1. Easier to weld. Lower cost.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTextured HDPE:\u003c\/strong\u003e Required on slopes steeper than 3:1 H:V to provide interface friction for slope stability. Interface friction angle 20–30° vs 8–12° for smooth.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\": \"Question\", \"name\": \"What thickness HDPE do I need?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"For garden and amenity ponds: 0.5\\u20130.75mm. For commercial ponds up to 3m depth: 1.0mm smooth. For LLFA-adopted SuDS ponds: 1.0mm (smooth base, textured on slopes \u003e3:1). For civil reservoirs and deep ponds over 3m: 1.5mm. Slopes steeper than 3:1 always require textured HDPE regardless of thickness.\"}},{\"@type\": \"Question\", \"name\": \"Does HDPE need a liner warranty?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Our HDPE geomembrane is GRI-GM13 compliant with full manufacturer batch certification. For commercial and civil applications, we can provide CQA documentation including material test certificates, seam test logs, and as-built records as required by LLFA adoption submissions.\"}},{\"@type\": \"Question\", \"name\": \"Is HDPE fish safe?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes \\u2014 HDPE is completely inert and fish-safe. It contains no plasticisers, heavy metals, or leachable compounds. NSF 61 certified HDPE is available for potable water and food production aquaculture applications.\"}}]}\u003c\/script\u003e\u003cp\u003e\u003ca href=\"\/pages\/hdpe-geomembrane-uk-technical-specification\"\u003eRead the full HDPE technical specification guide →\u003c\/a\u003e | \u003ca href=\"\/pages\/get-expert-advice\"\u003eGet a quote →\u003c\/a\u003e\u003c\/p\u003e","products":[{"product_id":"heavy-duty-hdpe-pond-liner-40year-guarantee-free-underlay-1","title":"HDPE Pond Liner | 40 Year Guarantee | Heavy Duty","description":"\u003ch2\u003eHDPE Pond Liner UK — Heavy Duty | UV Stabilised | Long Guarantee | Fish Safe | Free Delivery\u003c\/h2\u003e\n\u003cp\u003eFor large-scale pond projects, commercial water features, and installations requiring maximum UV stability and chemical resistance, our \u003cstrong\u003eHDPE Pond Liner\u003c\/strong\u003e is the professional's choice. High-Density Polyethylene is one of the world's most widely used liner materials for reservoirs, commercial ponds, and large water containment systems — and our HDPE pond liner brings that industrial-grade performance to UK garden and commercial pond installations.\u003c\/p\u003e\n\u003cp\u003eHDPE (High-Density Polyethylene) is engineered for long-term outdoor performance. Its inherent density creates exceptional resistance to UV radiation, chemical attack, and biological degradation — making it the preferred material for ponds where environmental exposure is extreme and liner replacement would be prohibitively expensive.\u003c\/p\u003e\n\u003ch3\u003eFull Technical Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHigh-Density Polyethylene (HDPE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e0.35mm–1.0mm+ (by grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-40°C to +60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV Resistance\u003c\/td\u003e\n\u003ctd\u003eExcellent — UV stabilised with carbon black pigment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFish Safe\u003c\/td\u003e\n\u003ctd\u003e✅ Yes — food-grade polyethylene, certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuarantee\u003c\/td\u003e\n\u003ctd\u003e25–40 Years (by grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical Resistance\u003c\/td\u003e\n\u003ctd\u003eOutstanding — resists acids, alkalis, oils\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlexibility\u003c\/td\u003e\n\u003ctd\u003eGood — less flexible than EPDM; best for regular shapes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColour\u003c\/td\u003e\n\u003ctd\u003eBlack (UV-stable carbon black pigment)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003e5 Use Cases for HDPE Pond Liner\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e🏭 \u003cstrong\u003eCommercial Fish Farms\u003c\/strong\u003e — HDPE's food-grade certification makes it ideal for aquaculture and commercial fish production\u003c\/li\u003e\n\u003cli\u003e💧 \u003cstrong\u003eLarge Agricultural Ponds\u003c\/strong\u003e — Irrigation reservoirs and livestock water storage where long-term chemical resistance is essential\u003c\/li\u003e\n\u003cli\u003e🌊 \u003cstrong\u003eCanal and Waterway Lining\u003c\/strong\u003e — Commercial waterway projects where HDPE's tensile strength and weldability are required\u003c\/li\u003e\n\u003cli\u003e🏗️ \u003cstrong\u003eFormal Concrete-Edged Ponds\u003c\/strong\u003e — HDPE's dimensional stability suits rectangular and regular-shaped formal ponds\u003c\/li\u003e\n\u003cli\u003e☀️ \u003cstrong\u003eHigh-UV Exposure Sites\u003c\/strong\u003e — Where continuous direct sunlight over decades is a factor — HDPE's UV stabilisation is industry-leading\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eStep-by-Step Installation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrepare a smooth substrate\u003c\/strong\u003e — A compacted sand layer of 50–100mm provides the ideal base for HDPE installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnderlay is essential\u003c\/strong\u003e — Lay 200gsm geotextile underlay before the HDPE liner to protect against stone punctures\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition the HDPE\u003c\/strong\u003e — HDPE is heavier and less flexible — plan carefully before positioning. Large sheets may require additional labour\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeam welding for joins\u003c\/strong\u003e — Where multiple sheets are required, HDPE must be joined by hot-air or extrusion welding — a professional process\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnchor and backfill\u003c\/strong\u003e — HDPE edges are typically anchored in a concrete anchor trench or under concrete coping\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eWhy Choose HDPE?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIndustry-leading UV stability via carbon-black pigmentation\u003c\/li\u003e\n\u003cli\u003eOutstanding chemical resistance — resists acids, alkalis, and oils\u003c\/li\u003e\n\u003cli\u003eDimensional stability — does not creep or deform under load\u003c\/li\u003e\n\u003cli\u003eWeldable — can be heat-welded into any shape for commercial projects\u003c\/li\u003e\n\u003cli\u003e25–40 year guarantees reflecting proven longevity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e✅ Trust \u0026amp; Guarantee\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e✅ Fish Safe Certified — Food-grade polyethylene, safe for all aquatic life\u003c\/li\u003e\n\u003cli\u003e✅ Free UK Delivery — All mainland UK orders delivered free\u003c\/li\u003e\n\u003cli\u003e✅ 25–40 Year Guarantee — Long-term material warranty by grade\u003c\/li\u003e\n\u003cli\u003e✅ Expert Advice Available — Commercial and large-scale project specialists on hand\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is HDPE easier or harder to install than EPDM?\u003c\/strong\u003e\u003cbr\u003eA: HDPE is less flexible, making it better suited to regular pond shapes. For irregular naturalistic ponds, EPDM is typically easier to install. For rectangular or commercial ponds, HDPE is excellent.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I join HDPE myself?\u003c\/strong\u003e\u003cbr\u003eA: HDPE joins require heat welding — a professional process. For DIY installations, plan your pond size to use a single HDPE sheet without joins, or use EPDM if joins are needed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does HDPE compare to EPDM for a garden pond?\u003c\/strong\u003e\u003cbr\u003eA: For standard garden ponds with natural shapes, EPDM is typically the better choice due to superior flexibility. HDPE excels in large, regular-shaped installations and environments with extreme chemical or UV exposure.\u003c\/p\u003e","brand":"PondLinersco.co.uk","offers":[{"title":"2.5m x 2.5m","offer_id":53773583909212,"sku":"PL-HDPE-2.5x2.5","price":58.95,"currency_code":"GBP","in_stock":true},{"title":"2.5m x 3m","offer_id":53773583941980,"sku":"PL-HDPE-2.5x3","price":68.51,"currency_code":"GBP","in_stock":true},{"title":"3m x 3m","offer_id":53773583974748,"sku":"PL-HDPE-3x3","price":76.47,"currency_code":"GBP","in_stock":true},{"title":"3m x 4m","offer_id":53773584007516,"sku":"PL-HDPE-3x4","price":97.2,"currency_code":"GBP","in_stock":true},{"title":"3m x 5m","offer_id":53773584040284,"sku":"PL-HDPE-3x5","price":127.48,"currency_code":"GBP","in_stock":true},{"title":"3.5m x 5m","offer_id":53773584073052,"sku":"PL-HDPE-3.5x5","price":152.99,"currency_code":"GBP","in_stock":true},{"title":"4m x 4m","offer_id":53773584105820,"sku":"PL-HDPE-4x4","price":125.89,"currency_code":"GBP","in_stock":true},{"title":"4m x 5m","offer_id":53773584138588,"sku":"PL-HDPE-4x5","price":154.59,"currency_code":"GBP","in_stock":true},{"title":"4m x 6m","offer_id":53773584171356,"sku":"PL-HDPE-4x6","price":178.49,"currency_code":"GBP","in_stock":true},{"title":"4m x 8m","offer_id":53773584204124,"sku":"PL-HDPE-4x8","price":237.46,"currency_code":"GBP","in_stock":true},{"title":"4m x 9m","offer_id":53773584236892,"sku":"PL-HDPE-4x9","price":267.74,"currency_code":"GBP","in_stock":true},{"title":"5m x 5m","offer_id":53773584269660,"sku":"PL-HDPE-5x5","price":207.18,"currency_code":"GBP","in_stock":true},{"title":"5m x 6m","offer_id":53773584302428,"sku":"PL-HDPE-5x6","price":227.9,"currency_code":"GBP","in_stock":true},{"title":"5m x 7m","offer_id":53773584335196,"sku":"PL-HDPE-5x7","price":264.55,"currency_code":"GBP","in_stock":true},{"title":"5m x 8m","offer_id":53773584367964,"sku":"PL-HDPE-5x8","price":299.61,"currency_code":"GBP","in_stock":true},{"title":"5m x 9m","offer_id":53773584400732,"sku":"PL-HDPE-5x9","price":353.8,"currency_code":"GBP","in_stock":true},{"title":"6m x 6m","offer_id":53773584433500,"sku":"PL-HDPE-6x6","price":262.96,"currency_code":"GBP","in_stock":true},{"title":"6m x 7m","offer_id":53773584466268,"sku":"PL-HDPE-6x7","price":317.15,"currency_code":"GBP","in_stock":true},{"title":"6m x 8m","offer_id":53773584499036,"sku":"PL-HDPE-6x8","price":347.43,"currency_code":"GBP","in_stock":true},{"title":"6m x 9m","offer_id":53773584531804,"sku":"PL-HDPE-6x9","price":387.27,"currency_code":"GBP","in_stock":true},{"title":"7m x 7m","offer_id":53773584564572,"sku":"PL-HDPE-7x7","price":358.59,"currency_code":"GBP","in_stock":true},{"title":"7m x 9m","offer_id":53773584597340,"sku":"PL-HDPE-7x9","price":451.02,"currency_code":"GBP","in_stock":true},{"title":"7m x 11m","offer_id":53773584630108,"sku":"PL-HDPE-7x11","price":546.65,"currency_code":"GBP","in_stock":true},{"title":"8m x 8m","offer_id":53773584662876,"sku":"PL-HDPE-8x8","price":490.86,"currency_code":"GBP","in_stock":true},{"title":"8m x 9m","offer_id":53773584695644,"sku":"PL-HDPE-8x9","price":519.55,"currency_code":"GBP","in_stock":true},{"title":"8m x 10m","offer_id":53773584728412,"sku":"PL-HDPE-8x10","price":580.11,"currency_code":"GBP","in_stock":true},{"title":"8m x 12m","offer_id":53773584761180,"sku":"PL-HDPE-8x12","price":693.27,"currency_code":"GBP","in_stock":true},{"title":"9m x 9m","offer_id":53773584793948,"sku":"PL-HDPE-9x9","price":596.05,"currency_code":"GBP","in_stock":true},{"title":"9m x 10m","offer_id":53773584826716,"sku":"PL-HDPE-9x10","price":661.4,"currency_code":"GBP","in_stock":true},{"title":"9m x 12m","offer_id":53773584859484,"sku":"PL-HDPE-9x12","price":651.84,"currency_code":"GBP","in_stock":true},{"title":"10m x 1m","offer_id":53773584892252,"sku":"PL-HDPE-10x1","price":94.01,"currency_code":"GBP","in_stock":true},{"title":"10m x 2m","offer_id":53773584925020,"sku":"PL-HDPE-10x2","price":148.2,"currency_code":"GBP","in_stock":true},{"title":"10m x 6m","offer_id":53773584957788,"sku":"PL-HDPE-10x6","price":476.53,"currency_code":"GBP","in_stock":true},{"title":"10m x 7m","offer_id":53773584990556,"sku":"PL-HDPE-10x7","price":513.18,"currency_code":"GBP","in_stock":true},{"title":"10m x 10m","offer_id":53773585023324,"sku":"PL-HDPE-10x10","price":725.15,"currency_code":"GBP","in_stock":true},{"title":"10m x 11m","offer_id":53773585056092,"sku":"PL-HDPE-10x11","price":795.28,"currency_code":"GBP","in_stock":true},{"title":"10m x 12m","offer_id":53773585088860,"sku":"PL-HDPE-10x12","price":897.28,"currency_code":"GBP","in_stock":true},{"title":"12m x 12m","offer_id":53773585121628,"sku":"PL-HDPE-12x12","price":1104.46,"currency_code":"GBP","in_stock":true},{"title":"12m x 13m","offer_id":53773585154396,"sku":"PL-HDPE-12x13","price":1131.55,"currency_code":"GBP","in_stock":true},{"title":"12m x 15m","offer_id":53773585187164,"sku":"PL-HDPE-12x15","price":1216.03,"currency_code":"GBP","in_stock":true},{"title":"12m x 18m","offer_id":53773585219932,"sku":"PL-HDPE-12x18","price":1471.02,"currency_code":"GBP","in_stock":true},{"title":"13m x 13m","offer_id":53773585252700,"sku":"PL-HDPE-13x13","price":1238.34,"currency_code":"GBP","in_stock":true},{"title":"14m x 14m","offer_id":53773585285468,"sku":"PL-HDPE-14x14","price":1362.65,"currency_code":"GBP","in_stock":true},{"title":"18m x 20m","offer_id":53773585318236,"sku":"PL-HDPE-18x20","price":2374.68,"currency_code":"GBP","in_stock":true},{"title":"20m x 30m","offer_id":53773585351004,"sku":"PL-HDPE-20x30","price":4145.33,"currency_code":"GBP","in_stock":true},{"title":"22m x 32m","offer_id":53773585383772,"sku":"PL-HDPE-22x32","price":4784.41,"currency_code":"GBP","in_stock":true},{"title":"26m x 38m","offer_id":53773585416540,"sku":"PL-HDPE-26x38","price":7014.08,"currency_code":"GBP","in_stock":true},{"title":"30m x 40m","offer_id":53773585449308,"sku":"PL-HDPE-30x40","price":7952.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0889\/2035\/9260\/files\/ecb8aaebc0f52f7ab3d9c6ede440e489.jpg?v=1779039856"},{"product_id":"industrial-heavy-duty-pond-liners-with-free-underlay-and-lifetime-guarantee","title":"Polyex Pond Liner | Reversible Black\/Brown | Lifetime Guarantee","description":"\u003ch2\u003ePolyex Pond Liner UK — Reversible Black\/Brown | Lifetime Guarantee | Fish Safe | Flexible\u003c\/h2\u003e\n\u003cp\u003eOur \u003cstrong\u003ePolyex Pond Liner\u003c\/strong\u003e offers something unique in the UK pond liner market: a reversible black\/brown design that gives you flexibility in how your pond looks. Black for the classic reflective pond appearance; brown for a more natural, earthy aesthetic that blends with surrounding garden soil and plantings. One liner, two looks — backed by a Lifetime Guarantee.\u003c\/p\u003e\n\u003cp\u003ePolyex is an advanced polyethylene formulation that combines the flexibility and fish-safe certification of modern pond liner with an innovative dual-colour design. It is the preferred choice for pond builders who want visual options and long-term performance from their liner investment.\u003c\/p\u003e\n\u003ch3\u003eFull Technical Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolyex (Advanced Polyethylene Formulation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e0.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColour\u003c\/td\u003e\n\u003ctd\u003eReversible Black \/ Brown (unique dual-colour)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-20°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV Resistance\u003c\/td\u003e\n\u003ctd\u003eExcellent — UV stabilised on both sides\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFish Safe\u003c\/td\u003e\n\u003ctd\u003e✅ Yes — certified safe for all aquatic life\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuarantee\u003c\/td\u003e\n\u003ctd\u003eLifetime Guarantee\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlexibility\u003c\/td\u003e\n\u003ctd\u003eGood — flexible and easy to install\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUnique Feature\u003c\/td\u003e\n\u003ctd\u003eReversible — use either side facing up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003e5 Use Cases for Polyex Reversible Pond Liner\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e🌿 \u003cstrong\u003eNatural Pond Gardens\u003c\/strong\u003e — Brown-side-up creates a natural earthy tone blending beautifully with planted margins and natural stone edging\u003c\/li\u003e\n\u003cli\u003e🪴 \u003cstrong\u003eContemporary Garden Features\u003c\/strong\u003e — Black-side-up provides the clean, reflective surface preferred in modern garden design\u003c\/li\u003e\n\u003cli\u003e🐸 \u003cstrong\u003eWildlife Ponds\u003c\/strong\u003e — The brown side mimics natural pond bottom colours, making wildlife ponds more naturalistic and encouraging wildlife\u003c\/li\u003e\n\u003cli\u003e🏡 \u003cstrong\u003eDIY Garden Ponds\u003c\/strong\u003e — Excellent choice for first-time pond builders who want premium performance with installation flexibility\u003c\/li\u003e\n\u003cli\u003e💧 \u003cstrong\u003eBog Gardens\u003c\/strong\u003e — The brown side creates a natural appearance in shallow bog garden installations with marginal planting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eStep-by-Step Installation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eChoose your side\u003c\/strong\u003e — Decide before laying whether you want the black or brown face up. Natural plantings suit brown; formal designs suit black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrepare the ground\u003c\/strong\u003e — Remove all sharp stones and roots. Apply a 50mm sand layer to the base for additional protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall geotextile underlay\u003c\/strong\u003e — Lay 200gsm geotextile underlay before the Polyex liner — essential to protect against stone punctures\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition the Polyex liner\u003c\/strong\u003e — Unfold with your chosen side facing up, position centrally over the pond, and allow to warm in sunlight for maximum flexibility\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm, secure and fill\u003c\/strong\u003e — Gently press liner into contours, creating smooth folds at corners. Secure edges under coping and fill slowly with water\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eWhy Choose Polyex?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUnique reversible design — only pond liner available in two usable colours\u003c\/li\u003e\n\u003cli\u003eLifetime guarantee — premium-grade material backing\u003c\/li\u003e\n\u003cli\u003eUV stabilised on both sides — both black and brown surfaces independently UV stabilised\u003c\/li\u003e\n\u003cli\u003eFish safe — safe for all fish species and aquatic wildlife from day one\u003c\/li\u003e\n\u003cli\u003eVersatile — suitable for a wide range of pond sizes and styles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e✅ Trust \u0026amp; Guarantee\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e✅ Fish Safe Certified — Safe for all fish species and pond wildlife\u003c\/li\u003e\n\u003cli\u003e✅ Free UK Delivery — All mainland UK orders delivered free\u003c\/li\u003e\n\u003cli\u003e✅ Lifetime Guarantee — Premium lifetime material warranty\u003c\/li\u003e\n\u003cli\u003e✅ Expert Advice Available — Our team can help you choose the right side and size\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I change which side faces up after the pond is built?\u003c\/strong\u003e\u003cbr\u003eA: This would require emptying and re-laying the liner — not practical once the pond is filled. Choose your preferred side carefully before installation. Brown is generally preferred for natural pond aesthetics; black for formal or contemporary designs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is Polyex the same as standard LDPE pond liner?\u003c\/strong\u003e\u003cbr\u003eA: Polyex is an advanced polyethylene formulation with specific additives for UV stability, fish safety, and the unique dual-colour design. It is a premium product compared to standard LDPE.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What happens if I install Polyex with the wrong side up?\u003c\/strong\u003e\u003cbr\u003eA: Both sides are fully functional — UV stabilised and fish safe. If you install with the wrong colour facing up, the liner will still perform perfectly. The choice is purely aesthetic.\u003c\/p\u003e","brand":"PondLinersco.co.uk","offers":[{"title":"2.0m x 2.0m","offer_id":53773595574620,"sku":"PL-IHD1-2.0x2.0","price":74.89,"currency_code":"GBP","in_stock":true},{"title":"3m x 2.5m","offer_id":53773595607388,"sku":"PL-IHD1-3x2.5","price":101.97,"currency_code":"GBP","in_stock":true},{"title":"3m x 3m","offer_id":53773595640156,"sku":"PL-IHD1-3x3","price":111.54,"currency_code":"GBP","in_stock":true},{"title":"4m x 3m","offer_id":53773595672924,"sku":"PL-IHD1-4x3","price":143.41,"currency_code":"GBP","in_stock":true},{"title":"4m x 4m","offer_id":53773595705692,"sku":"PL-IHD1-4x4","price":196.02,"currency_code":"GBP","in_stock":true},{"title":"5m x 3.5m","offer_id":53773595738460,"sku":"PL-IHD1-5x3.5","price":211.96,"currency_code":"GBP","in_stock":true},{"title":"5m x 4m","offer_id":53773595771228,"sku":"PL-IHD1-5x4","price":239.05,"currency_code":"GBP","in_stock":true},{"title":"5m x 5m","offer_id":53773595803996,"sku":"PL-IHD1-5x5","price":293.24,"currency_code":"GBP","in_stock":true},{"title":"6m x 4.5m","offer_id":53773595836764,"sku":"PL-IHD1-6x4.5","price":318.74,"currency_code":"GBP","in_stock":true},{"title":"6m x 5m","offer_id":53773595869532,"sku":"PL-IHD1-6x5","price":353.8,"currency_code":"GBP","in_stock":true},{"title":"6m x 6m","offer_id":53773595902300,"sku":"PL-IHD1-6x6","price":533.9,"currency_code":"GBP","in_stock":true},{"title":"7m x 4m","offer_id":53773595935068,"sku":"PL-IHD1-7x4","price":353.8,"currency_code":"GBP","in_stock":true},{"title":"7m x 4.5m","offer_id":53773595967836,"sku":"PL-IHD1-7x4.5","price":387.27,"currency_code":"GBP","in_stock":true},{"title":"7m x 5m","offer_id":53773596000604,"sku":"PL-IHD1-7x5","price":419.15,"currency_code":"GBP","in_stock":true},{"title":"7m x 5.5m","offer_id":53773596033372,"sku":"PL-IHD1-7x5.5","price":452.61,"currency_code":"GBP","in_stock":true},{"title":"7.5m x 4m","offer_id":53773596066140,"sku":"PL-IHD1-7.5x4","price":353.8,"currency_code":"GBP","in_stock":true},{"title":"7.5m x 4.5m","offer_id":53773596098908,"sku":"PL-IHD1-7.5x4.5","price":403.21,"currency_code":"GBP","in_stock":true},{"title":"7.5m x 5m","offer_id":53773596131676,"sku":"PL-IHD1-7.5x5","price":444.65,"currency_code":"GBP","in_stock":true},{"title":"7.5m x 5.5m","offer_id":53773596164444,"sku":"PL-IHD1-7.5x5.5","price":478.11,"currency_code":"GBP","in_stock":true},{"title":"10m x 1m","offer_id":53773596197212,"sku":"PL-IHD1-10x1","price":133.85,"currency_code":"GBP","in_stock":true},{"title":"10m x 2m","offer_id":53773596229980,"sku":"PL-IHD1-10x2","price":237.46,"currency_code":"GBP","in_stock":true},{"title":"11m x 10m","offer_id":53773596262748,"sku":"PL-IHD1-11x10","price":1274.99,"currency_code":"GBP","in_stock":true},{"title":"11m x 11m","offer_id":53773596295516,"sku":"PL-IHD1-11x1","price":1416.84,"currency_code":"GBP","in_stock":true},{"title":"12m x 10m","offer_id":53773596328284,"sku":"PL-IHD1-12x10","price":1469.42,"currency_code":"GBP","in_stock":true},{"title":"12m x 11m","offer_id":53773596361052,"sku":"PL-IHD1-12x11","price":1592.15,"currency_code":"GBP","in_stock":true},{"title":"12m x 12m","offer_id":53773596393820,"sku":"PL-IHD1-12x12","price":1751.53,"currency_code":"GBP","in_stock":true},{"title":"30m x 15m","offer_id":53773596426588,"sku":"PL-IHD1-30x15","price":5417.14,"currency_code":"GBP","in_stock":true},{"title":"30m x 18m","offer_id":53773596459356,"sku":"PL-IHD1-30x18","price":6373.39,"currency_code":"GBP","in_stock":true},{"title":"35m x 20m","offer_id":53773596492124,"sku":"PL-IHD1-35x20","price":7793.41,"currency_code":"GBP","in_stock":true},{"title":"50m x 10m","offer_id":53773596557660,"sku":"PL-IHD1-50x10","price":6373.39,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0889\/2035\/9260\/files\/1b96ff272a8fa21be5ada5089b977680.jpg?v=1779040083"},{"product_id":"industrial-heavy-duty-pond-liner-25-year-guarantee-pond-lining","title":"HDPE Pond Liner | Industrial Grade | 25 Year Guarantee","description":"\u003ch2\u003eHDPE Pond Liner UK — Heavy Duty | UV Stabilised | Long Guarantee | Fish Safe | Free Delivery\u003c\/h2\u003e\n\u003cp\u003eFor large-scale pond projects, commercial water features, and installations requiring maximum UV stability and chemical resistance, our \u003cstrong\u003eHDPE Pond Liner\u003c\/strong\u003e is the professional's choice. High-Density Polyethylene is one of the world's most widely used liner materials for reservoirs, commercial ponds, and large water containment systems — and our HDPE pond liner brings that industrial-grade performance to UK garden and commercial pond installations.\u003c\/p\u003e\n\u003cp\u003eHDPE (High-Density Polyethylene) is engineered for long-term outdoor performance. Its inherent density creates exceptional resistance to UV radiation, chemical attack, and biological degradation — making it the preferred material for ponds where environmental exposure is extreme and liner replacement would be prohibitively expensive.\u003c\/p\u003e\n\u003ch3\u003eFull Technical Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHigh-Density Polyethylene (HDPE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e0.35mm–1.0mm+ (by grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-40°C to +60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV Resistance\u003c\/td\u003e\n\u003ctd\u003eExcellent — UV stabilised with carbon black pigment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFish Safe\u003c\/td\u003e\n\u003ctd\u003e✅ Yes — food-grade polyethylene, certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuarantee\u003c\/td\u003e\n\u003ctd\u003e25–40 Years (by grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical Resistance\u003c\/td\u003e\n\u003ctd\u003eOutstanding — resists acids, alkalis, oils\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlexibility\u003c\/td\u003e\n\u003ctd\u003eGood — less flexible than EPDM; best for regular shapes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColour\u003c\/td\u003e\n\u003ctd\u003eBlack (UV-stable carbon black pigment)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003e5 Use Cases for HDPE Pond Liner\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e🏭 \u003cstrong\u003eCommercial Fish Farms\u003c\/strong\u003e — HDPE's food-grade certification makes it ideal for aquaculture and commercial fish production\u003c\/li\u003e\n\u003cli\u003e💧 \u003cstrong\u003eLarge Agricultural Ponds\u003c\/strong\u003e — Irrigation reservoirs and livestock water storage where long-term chemical resistance is essential\u003c\/li\u003e\n\u003cli\u003e🌊 \u003cstrong\u003eCanal and Waterway Lining\u003c\/strong\u003e — Commercial waterway projects where HDPE's tensile strength and weldability are required\u003c\/li\u003e\n\u003cli\u003e🏗️ \u003cstrong\u003eFormal Concrete-Edged Ponds\u003c\/strong\u003e — HDPE's dimensional stability suits rectangular and regular-shaped formal ponds\u003c\/li\u003e\n\u003cli\u003e☀️ \u003cstrong\u003eHigh-UV Exposure Sites\u003c\/strong\u003e — Where continuous direct sunlight over decades is a factor — HDPE's UV stabilisation is industry-leading\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eStep-by-Step Installation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrepare a smooth substrate\u003c\/strong\u003e — A compacted sand layer of 50–100mm provides the ideal base for HDPE installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnderlay is essential\u003c\/strong\u003e — Lay 200gsm geotextile underlay before the HDPE liner to protect against stone punctures\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition the HDPE\u003c\/strong\u003e — HDPE is heavier and less flexible — plan carefully before positioning. Large sheets may require additional labour\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeam welding for joins\u003c\/strong\u003e — Where multiple sheets are required, HDPE must be joined by hot-air or extrusion welding — a professional process\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnchor and backfill\u003c\/strong\u003e — HDPE edges are typically anchored in a concrete anchor trench or under concrete coping\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eWhy Choose HDPE?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIndustry-leading UV stability via carbon-black pigmentation\u003c\/li\u003e\n\u003cli\u003eOutstanding chemical resistance — resists acids, alkalis, and oils\u003c\/li\u003e\n\u003cli\u003eDimensional stability — does not creep or deform under load\u003c\/li\u003e\n\u003cli\u003eWeldable — can be heat-welded into any shape for commercial projects\u003c\/li\u003e\n\u003cli\u003e25–40 year guarantees reflecting proven longevity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e✅ Trust \u0026amp; Guarantee\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e✅ Fish Safe Certified — Food-grade polyethylene, safe for all aquatic life\u003c\/li\u003e\n\u003cli\u003e✅ Free UK Delivery — All mainland UK orders delivered free\u003c\/li\u003e\n\u003cli\u003e✅ 25–40 Year Guarantee — Long-term material warranty by grade\u003c\/li\u003e\n\u003cli\u003e✅ Expert Advice Available — Commercial and large-scale project specialists on hand\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is HDPE easier or harder to install than EPDM?\u003c\/strong\u003e\u003cbr\u003eA: HDPE is less flexible, making it better suited to regular pond shapes. For irregular naturalistic ponds, EPDM is typically easier to install. For rectangular or commercial ponds, HDPE is excellent.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I join HDPE myself?\u003c\/strong\u003e\u003cbr\u003eA: HDPE joins require heat welding — a professional process. For DIY installations, plan your pond size to use a single HDPE sheet without joins, or use EPDM if joins are needed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does HDPE compare to EPDM for a garden pond?\u003c\/strong\u003e\u003cbr\u003eA: For standard garden ponds with natural shapes, EPDM is typically the better choice due to superior flexibility. HDPE excels in large, regular-shaped installations and environments with extreme chemical or UV exposure.\u003c\/p\u003e","brand":"PondLinersco.co.uk","offers":[{"title":"2.5m x 2.5m","offer_id":53773605339484,"sku":"PL-IHD-2.5x2.5","price":44.6,"currency_code":"GBP","in_stock":true},{"title":"3m x 3m","offer_id":53773605372252,"sku":"PL-IHD-3x3","price":54.16,"currency_code":"GBP","in_stock":true},{"title":"3m x 4m","offer_id":53773605405020,"sku":"PL-IHD-3x4","price":68.51,"currency_code":"GBP","in_stock":true},{"title":"3m x 5m","offer_id":53773605437788,"sku":"PL-IHD-3x5","price":89.22,"currency_code":"GBP","in_stock":true},{"title":"4m x 4m","offer_id":53773605470556,"sku":"PL-IHD-4x4","price":84.45,"currency_code":"GBP","in_stock":true},{"title":"4m x 5m","offer_id":53773605503324,"sku":"PL-IHD-4x5","price":105.16,"currency_code":"GBP","in_stock":true},{"title":"4m x 6m","offer_id":53773605536092,"sku":"PL-IHD-4x6","price":117.91,"currency_code":"GBP","in_stock":true},{"title":"4m x 8m","offer_id":53773605568860,"sku":"PL-IHD-4x8","price":156.18,"currency_code":"GBP","in_stock":true},{"title":"4m x 9m","offer_id":53773605601628,"sku":"PL-IHD-4x9","price":175.3,"currency_code":"GBP","in_stock":true},{"title":"5m x 5m","offer_id":53773605634396,"sku":"PL-IHD-5x5","price":125.89,"currency_code":"GBP","in_stock":true},{"title":"5m x 6m","offer_id":53773605667164,"sku":"PL-IHD-5x6","price":148.2,"currency_code":"GBP","in_stock":true},{"title":"5m x 7m","offer_id":53773605699932,"sku":"PL-IHD-5x7","price":167.34,"currency_code":"GBP","in_stock":true},{"title":"5m x 8m","offer_id":53773605732700,"sku":"PL-IHD-5x8","price":194.42,"currency_code":"GBP","in_stock":true},{"title":"5m x 9m","offer_id":53773605798236,"sku":"PL-IHD-5x9","price":213.55,"currency_code":"GBP","in_stock":true},{"title":"6m x 6m","offer_id":53773605831004,"sku":"PL-IHD-6x6","price":175.3,"currency_code":"GBP","in_stock":true},{"title":"6m x 5m","offer_id":53773605863772,"sku":"PL-IHD-6x5","price":162.55,"currency_code":"GBP","in_stock":true},{"title":"6m x 7m","offer_id":53773605896540,"sku":"PL-IHD-6x7","price":196.02,"currency_code":"GBP","in_stock":true},{"title":"6m x 8m","offer_id":53773605929308,"sku":"PL-IHD-6x8","price":227.9,"currency_code":"GBP","in_stock":true},{"title":"6m x 9m","offer_id":53773605962076,"sku":"PL-IHD-6x9","price":247.03,"currency_code":"GBP","in_stock":true},{"title":"7m x 4m","offer_id":53773605994844,"sku":"PL-IHD-7x4","price":219.59,"currency_code":"GBP","in_stock":true},{"title":"7m x 5m","offer_id":53773606027612,"sku":"PL-IHD-7x5","price":250.43,"currency_code":"GBP","in_stock":true},{"title":"7m x 7m","offer_id":53773606060380,"sku":"PL-IHD-7x7","price":261.36,"currency_code":"GBP","in_stock":true},{"title":"7m x 8m","offer_id":53773606093148,"sku":"PL-IHD-7x8","price":285.27,"currency_code":"GBP","in_stock":true},{"title":"7m x 9m","offer_id":53773606125916,"sku":"PL-IHD-7x9","price":301.21,"currency_code":"GBP","in_stock":true},{"title":"7m x 11m","offer_id":53773606158684,"sku":"PL-IHD-7x11","price":355.4,"currency_code":"GBP","in_stock":true},{"title":"8m x 8m","offer_id":53773606191452,"sku":"PL-IHD-8x8","price":301.21,"currency_code":"GBP","in_stock":true},{"title":"8m x 9m","offer_id":53773606224220,"sku":"PL-IHD-8x9","price":339.46,"currency_code":"GBP","in_stock":true},{"title":"8m x 10m","offer_id":53773606256988,"sku":"PL-IHD-8x10","price":371.34,"currency_code":"GBP","in_stock":true},{"title":"8m x 12m","offer_id":53773606289756,"sku":"PL-IHD-8x12","price":443.05,"currency_code":"GBP","in_stock":true},{"title":"9m x 6m","offer_id":53773606322524,"sku":"PL-IHD-9x6","price":392.98,"currency_code":"GBP","in_stock":true},{"title":"9m x 9m","offer_id":53773606355292,"sku":"PL-IHD-9x9","price":425.53,"currency_code":"GBP","in_stock":true},{"title":"9m x 10m","offer_id":53773606388060,"sku":"PL-IHD-9x10","price":435.09,"currency_code":"GBP","in_stock":true},{"title":"9m x 12m","offer_id":53773606420828,"sku":"PL-IHD-9x12","price":487.67,"currency_code":"GBP","in_stock":true},{"title":"10m x 1m","offer_id":53773606453596,"sku":"PL-IHD-10x1","price":73.29,"currency_code":"GBP","in_stock":true},{"title":"10m x 2m","offer_id":53773606486364,"sku":"PL-IHD-10x2","price":106.76,"currency_code":"GBP","in_stock":true},{"title":"10m x 6m","offer_id":53773606519132,"sku":"PL-IHD-10x6","price":283.68,"currency_code":"GBP","in_stock":true},{"title":"10m x 7m","offer_id":53773606551900,"sku":"PL-IHD-10x7","price":318.74,"currency_code":"GBP","in_stock":true},{"title":"10m x 10m","offer_id":53773606584668,"sku":"PL-IHD-10x10","price":482.9,"currency_code":"GBP","in_stock":true},{"title":"10m x 11m","offer_id":53773606617436,"sku":"PL-IHD-10x11","price":498.84,"currency_code":"GBP","in_stock":true},{"title":"10m x 12m","offer_id":53773606650204,"sku":"PL-IHD-10x12","price":581.71,"currency_code":"GBP","in_stock":true},{"title":"12m x 12m","offer_id":53773606682972,"sku":"PL-IHD-12x12","price":653.42,"currency_code":"GBP","in_stock":true},{"title":"12m x 13m","offer_id":53773606715740,"sku":"PL-IHD-12x13","price":710.8,"currency_code":"GBP","in_stock":true},{"title":"12m x 15m","offer_id":53773606748508,"sku":"PL-IHD-12x15","price":779.34,"currency_code":"GBP","in_stock":true},{"title":"12m x 18m","offer_id":53773606781276,"sku":"PL-IHD-12x18","price":929.15,"currency_code":"GBP","in_stock":true},{"title":"13m x 13m","offer_id":53773606814044,"sku":"PL-IHD-13x13","price":728.34,"currency_code":"GBP","in_stock":true},{"title":"14m x 14m","offer_id":53773606846812,"sku":"PL-IHD-14x14","price":838.3,"currency_code":"GBP","in_stock":true},{"title":"18m x 20m","offer_id":53773606879580,"sku":"PL-IHD-18x20","price":1541.15,"currency_code":"GBP","in_stock":true},{"title":"20m x 30m","offer_id":53773606912348,"sku":"PL-IHD-20x30","price":2549.99,"currency_code":"GBP","in_stock":true},{"title":"22m x 32m","offer_id":53773606945116,"sku":"PL-IHD-22x32","price":2868.74,"currency_code":"GBP","in_stock":true},{"title":"26m x 38m","offer_id":53773606977884,"sku":"PL-IHD-26x38","price":4143.73,"currency_code":"GBP","in_stock":true},{"title":"30m x 40m","offer_id":53773607010652,"sku":"PL-IHD-30x40","price":4779.64,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0889\/2035\/9260\/files\/62bc58f11bd68c3333c0bab70798cb37_6ad409c3-c9e7-40da-b188-469cc2493df7.jpg?v=1779039930"},{"product_id":"premium-ldpe-pond-liner-0-35mm-tear-resistant-flexible-guaranteed-25-years-ideal-for-koi-wildlife-garden-water-features","title":"LDPE Pond Liner 0.35mm | Flexible \u0026 Tear-Resistant | 20 Year Guarantee","description":"\u003ch2\u003eLDPE Pond Liner UK — Flexible, Lightweight \u0026amp; Fish Safe | Long Guarantee | Free UK Delivery\u003c\/h2\u003e\n\u003cp\u003eOur \u003cstrong\u003eLDPE Pond Liner\u003c\/strong\u003e is the ideal choice for budget-conscious pond builders, smaller garden ponds, and first-time pond installations. Low-Density Polyethylene combines genuine flexibility with fish-safe certification at the most accessible price point in our liner range — making quality pond construction available to every UK gardener, regardless of budget.\u003c\/p\u003e\n\u003cp\u003eLDPE (Low-Density Polyethylene) is a trusted polymer widely used in water containment, horticulture, and food-contact applications. Its molecular structure makes it naturally flexible, resistant to cracking, and chemically inert — providing a safe, reliable pond liner for garden ponds, water features, and bog gardens.\u003c\/p\u003e\n\u003ch3\u003eFull Technical Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eLow-Density Polyethylene (LDPE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e0.35mm standard grade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-10°C to +60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV Resistance\u003c\/td\u003e\n\u003ctd\u003eGood — UV stabilised\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFish Safe\u003c\/td\u003e\n\u003ctd\u003e✅ Yes — food-grade polyethylene, certified safe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuarantee\u003c\/td\u003e\n\u003ctd\u003e15–25 Years (by grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlexibility\u003c\/td\u003e\n\u003ctd\u003eGood — lightweight and easy to work with\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColour\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eVery light — easiest liner to handle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCutting\u003c\/td\u003e\n\u003ctd\u003eEasy — scissors or sharp knife\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003e5 Use Cases for LDPE Pond Liner\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e🌱 \u003cstrong\u003eSmall Garden Ponds\u003c\/strong\u003e — Decorative goldfish ponds and small wildlife ponds up to approximately 4x4m and 0.5m depth\u003c\/li\u003e\n\u003cli\u003e🌿 \u003cstrong\u003eBog Gardens\u003c\/strong\u003e — Shallow planting areas with waterlogged conditions, perfect for marginal and bog plants\u003c\/li\u003e\n\u003cli\u003e🌸 \u003cstrong\u003eContainer Pond Features\u003c\/strong\u003e — Lining raised timber containers, half-barrels, and planter ponds for balconies and patios\u003c\/li\u003e\n\u003cli\u003e🐦 \u003cstrong\u003eBird Baths and Wildlife Drinking Features\u003c\/strong\u003e — Very shallow features for garden birds and hedgehogs needing easy water access\u003c\/li\u003e\n\u003cli\u003e🏡 \u003cstrong\u003eTemporary Seasonal Ponds\u003c\/strong\u003e — Seasonal water features that may be repositioned or altered as garden designs evolve\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eStep-by-Step Installation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eDig your pond\u003c\/strong\u003e — Excavate to desired shape. LDPE is best suited to shallower ponds (up to 0.6m). Remove all stones, glass, and sharp roots\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmooth the ground\u003c\/strong\u003e — A sand layer of 25–50mm significantly improves LDPE performance by eliminating sharp protrusions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLay geotextile underlay\u003c\/strong\u003e — Essential with LDPE. The underlay protects against punctures more likely with thinner material\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition the LDPE liner\u003c\/strong\u003e — Very easy to handle — lightweight and manageable for one person. Unfold over the pond and drape into shape naturally\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure and fill\u003c\/strong\u003e — Fold edges under edging stones or bury in turf. Fill slowly, adjusting folds as the pond fills\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eWhy Choose LDPE?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBest price point — most affordable flexible pond liner in our range\u003c\/li\u003e\n\u003cli\u003eEasiest handling — lightest liner material, easy to position and cut without assistance\u003c\/li\u003e\n\u003cli\u003eFish safe — food-grade polyethylene safe for goldfish, pond plants, and garden wildlife\u003c\/li\u003e\n\u003cli\u003eFlexible — bends and drapes easily around pond contours without cracking\u003c\/li\u003e\n\u003cli\u003eReadily repairable — LDPE patch tape repairs are quick and inexpensive\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e✅ Trust \u0026amp; Guarantee\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e✅ Fish Safe Certified — Food-grade polyethylene, safe for goldfish and all pond life\u003c\/li\u003e\n\u003cli\u003e✅ Free UK Delivery — All mainland UK orders delivered free\u003c\/li\u003e\n\u003cli\u003e✅ 15–25 Year Guarantee — Reliable medium-term warranty\u003c\/li\u003e\n\u003cli\u003e✅ Expert Advice Available — Our team will help you choose the right size and grade\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the maximum pond depth suitable for LDPE liner?\u003c\/strong\u003e\u003cbr\u003eA: We recommend LDPE for ponds up to 0.6m deep. For deeper ponds, upgrade to EPDM 0.75mm or 1.0mm for better durability and puncture resistance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is LDPE the same material as plastic sheeting?\u003c\/strong\u003e\u003cbr\u003eA: LDPE is a polyethylene material, but our pond liner grade is specifically formulated with UV stabilisers, fish-safe additives, and quality controls that standard plastic sheeting does not have. Never use generic plastic sheeting as a pond liner.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use LDPE for a pond with goldfish?\u003c\/strong\u003e\u003cbr\u003eA: Yes. LDPE is certified fish-safe and suitable for goldfish, shubunkins, and most common pond fish species. For koi, we recommend upgrading to EPDM for greater longevity.\u003c\/p\u003e","brand":"PondLinersco.co.uk","offers":[{"title":"2m x 2m","offer_id":55260884500828,"sku":"LDPE-035-2mX2m","price":48.74,"currency_code":"GBP","in_stock":true},{"title":"2.5m x 2m","offer_id":55260884533596,"sku":"LDPE-035-25mX2m","price":53.74,"currency_code":"GBP","in_stock":true},{"title":"2.5m x 2.5m","offer_id":55260884566364,"sku":"LDPE-035-25mX25m","price":57.49,"currency_code":"GBP","in_stock":true},{"title":"3m x 2m","offer_id":55260884599132,"sku":"LDPE-035-3mX2m","price":68.74,"currency_code":"GBP","in_stock":true},{"title":"3m x 2.5m","offer_id":55260884631900,"sku":"LDPE-035-3mX25m","price":71.24,"currency_code":"GBP","in_stock":true},{"title":"3m x 3m","offer_id":55260884664668,"sku":"LDPE-035-3mX3m","price":78.74,"currency_code":"GBP","in_stock":true},{"title":"4m x 3m","offer_id":55260884697436,"sku":"LDPE-035-4mX3m","price":82.49,"currency_code":"GBP","in_stock":true},{"title":"4m x 4m","offer_id":55260884730204,"sku":"LDPE-035-4mX4m","price":91.24,"currency_code":"GBP","in_stock":true},{"title":"5m x 3m","offer_id":55260884762972,"sku":"LDPE-035-5mX3m","price":82.49,"currency_code":"GBP","in_stock":true},{"title":"5m x 4m","offer_id":55260884795740,"sku":"LDPE-035-5mX4m","price":118.74,"currency_code":"GBP","in_stock":true},{"title":"5m x 4.5m","offer_id":55260884828508,"sku":"LDPE-035-5mX45m","price":124.99,"currency_code":"GBP","in_stock":true},{"title":"5m x 5m","offer_id":55260884861276,"sku":"LDPE-035-5mX5m","price":137.49,"currency_code":"GBP","in_stock":true},{"title":"6m x 3m","offer_id":55260884894044,"sku":"LDPE-035-6mX3m","price":98.74,"currency_code":"GBP","in_stock":true},{"title":"6m x 4m","offer_id":55260884926812,"sku":"LDPE-035-6mX4m","price":136.24,"currency_code":"GBP","in_stock":true},{"title":"6m x 4.5m","offer_id":55260884959580,"sku":"LDPE-035-6mX45m","price":146.24,"currency_code":"GBP","in_stock":true},{"title":"6m x 5m","offer_id":55260884992348,"sku":"LDPE-035-6mX5m","price":167.49,"currency_code":"GBP","in_stock":true},{"title":"6m x 6m","offer_id":55260885025116,"sku":"LDPE-035-6mX6m","price":194.99,"currency_code":"GBP","in_stock":true},{"title":"7m x 3m","offer_id":55260885057884,"sku":"LDPE-035-7mX3m","price":117.49,"currency_code":"GBP","in_stock":true},{"title":"7m x 4m","offer_id":55260885090652,"sku":"LDPE-035-7mX4m","price":158.74,"currency_code":"GBP","in_stock":true},{"title":"7m x 5m","offer_id":55260885123420,"sku":"LDPE-035-7mX5m","price":198.74,"currency_code":"GBP","in_stock":true},{"title":"7m x 5.5m","offer_id":55260885156188,"sku":"LDPE-035-7mX55m","price":216.24,"currency_code":"GBP","in_stock":true},{"title":"7m x 6m","offer_id":55260885188956,"sku":"LDPE-035-7mX6m","price":228.74,"currency_code":"GBP","in_stock":true},{"title":"7m x 6.5m","offer_id":55260885221724,"sku":"LDPE-035-7mX65m","price":246.24,"currency_code":"GBP","in_stock":true},{"title":"7m x 7m","offer_id":55260885254492,"sku":"LDPE-035-7mX7m","price":293.74,"currency_code":"GBP","in_stock":true},{"title":"7.5m x 6m","offer_id":55260885287260,"sku":"LDPE-035-75mX6m","price":268.74,"currency_code":"GBP","in_stock":true},{"title":"7.5m x 7m","offer_id":55260885320028,"sku":"LDPE-035-75mX7m","price":328.74,"currency_code":"GBP","in_stock":true},{"title":"7.5m x 7.5m","offer_id":55260885352796,"sku":"LDPE-035-75mX75m","price":353.74,"currency_code":"GBP","in_stock":true},{"title":"8m x 3m","offer_id":55260885385564,"sku":"LDPE-035-8mX3m","price":158.74,"currency_code":"GBP","in_stock":true},{"title":"8m x 4m","offer_id":55260885418332,"sku":"LDPE-035-8mX4m","price":208.74,"currency_code":"GBP","in_stock":true},{"title":"8m x 5m","offer_id":55260885451100,"sku":"LDPE-035-8mX5m","price":253.74,"currency_code":"GBP","in_stock":true},{"title":"8m x 6m","offer_id":55260885483868,"sku":"LDPE-035-8mX6m","price":306.24,"currency_code":"GBP","in_stock":true},{"title":"8m x 7m","offer_id":55260885516636,"sku":"LDPE-035-8mX7m","price":358.74,"currency_code":"GBP","in_stock":true},{"title":"8m x 8m","offer_id":55260885549404,"sku":"LDPE-035-8mX8m","price":404.99,"currency_code":"GBP","in_stock":true},{"title":"9m x 5m","offer_id":55260885582172,"sku":"LDPE-035-9mX5m","price":282.49,"currency_code":"GBP","in_stock":true},{"title":"9m x 6m","offer_id":55260885614940,"sku":"LDPE-035-9mX6m","price":341.24,"currency_code":"GBP","in_stock":true},{"title":"9m x 7m","offer_id":55260885647708,"sku":"LDPE-035-9mX7m","price":428.74,"currency_code":"GBP","in_stock":true},{"title":"9m x 8m","offer_id":55260885680476,"sku":"LDPE-035-9mX8m","price":462.49,"currency_code":"GBP","in_stock":true},{"title":"9m x 9m","offer_id":55260885713244,"sku":"LDPE-035-9mX9m","price":506.24,"currency_code":"GBP","in_stock":true},{"title":"10m x 6m","offer_id":55260885746012,"sku":"LDPE-035-10mX6m","price":374.99,"currency_code":"GBP","in_stock":true},{"title":"10m x 7m","offer_id":55260885778780,"sku":"LDPE-035-10mX7m","price":444.99,"currency_code":"GBP","in_stock":true},{"title":"10m x 8m","offer_id":55260885811548,"sku":"LDPE-035-10mX8m","price":506.24,"currency_code":"GBP","in_stock":true},{"title":"10m x 9m","offer_id":55260885844316,"sku":"LDPE-035-10mX9m","price":568.74,"currency_code":"GBP","in_stock":true},{"title":"10m x 10m","offer_id":55260885877084,"sku":"LDPE-035-10mX10m","price":632.49,"currency_code":"GBP","in_stock":true},{"title":"11m x 7m","offer_id":55260885909852,"sku":"LDPE-035-11mX7m","price":632.49,"currency_code":"GBP","in_stock":true},{"title":"11m x 8m","offer_id":55260885942620,"sku":"LDPE-035-11mX8m","price":554.99,"currency_code":"GBP","in_stock":true},{"title":"11m x 9m","offer_id":55260885975388,"sku":"LDPE-035-11mX9m","price":623.74,"currency_code":"GBP","in_stock":true},{"title":"11m x 10m","offer_id":55260886008156,"sku":"LDPE-035-11mX10m","price":682.49,"currency_code":"GBP","in_stock":true},{"title":"12m x 7m","offer_id":55260886040924,"sku":"LDPE-035-12mX7m","price":531.24,"currency_code":"GBP","in_stock":true},{"title":"12m x 8m","offer_id":55260886073692,"sku":"LDPE-035-12mX8m","price":609.99,"currency_code":"GBP","in_stock":true},{"title":"12m x 9m","offer_id":55260886106460,"sku":"LDPE-035-12mX9m","price":682.49,"currency_code":"GBP","in_stock":true},{"title":"12m x 10m","offer_id":55260886139228,"sku":"LDPE-035-12mX10m","price":748.74,"currency_code":"GBP","in_stock":true},{"title":"12m x 12m","offer_id":55260886171996,"sku":"LDPE-035-12mX12m","price":906.24,"currency_code":"GBP","in_stock":true},{"title":"13m x 8m","offer_id":55260886204764,"sku":"LDPE-035-13mX8m","price":657.49,"currency_code":"GBP","in_stock":true},{"title":"13m x 9m","offer_id":55260886237532,"sku":"LDPE-035-13mX9m","price":734.99,"currency_code":"GBP","in_stock":true},{"title":"13m x 10m","offer_id":55260886270300,"sku":"LDPE-035-13mX10m","price":821.12,"currency_code":"GBP","in_stock":true},{"title":"13m x 12m","offer_id":55260886303068,"sku":"LDPE-035-13mX12m","price":971.24,"currency_code":"GBP","in_stock":true},{"title":"13m x 13m","offer_id":55260886335836,"sku":"LDPE-035-13mX13m","price":1054.99,"currency_code":"GBP","in_stock":true},{"title":"14m x 8m","offer_id":55260886368604,"sku":"LDPE-035-14mX8m","price":707.49,"currency_code":"GBP","in_stock":true},{"title":"14m x 9m","offer_id":55260886401372,"sku":"LDPE-035-14mX9m","price":787.49,"currency_code":"GBP","in_stock":true},{"title":"14m x 10m","offer_id":55260886434140,"sku":"LDPE-035-14mX10m","price":873.74,"currency_code":"GBP","in_stock":true},{"title":"14m x 12m","offer_id":55260886466908,"sku":"LDPE-035-14mX12m","price":1048.74,"currency_code":"GBP","in_stock":true},{"title":"14m x 14m","offer_id":55260886499676,"sku":"LDPE-035-14mX14m","price":1222.49,"currency_code":"GBP","in_stock":true},{"title":"15m x 8m","offer_id":55260886532444,"sku":"LDPE-035-15mX8m","price":748.74,"currency_code":"GBP","in_stock":true},{"title":"15m x 9m","offer_id":55260886565212,"sku":"LDPE-035-15mX9m","price":847.49,"currency_code":"GBP","in_stock":true},{"title":"15m x 10m","offer_id":55260886597980,"sku":"LDPE-035-15mX10m","price":934.99,"currency_code":"GBP","in_stock":true},{"title":"15m x 12m","offer_id":55260886630748,"sku":"LDPE-035-15mX12m","price":1123.74,"currency_code":"GBP","in_stock":true},{"title":"15m x 15m","offer_id":55260886663516,"sku":"LDPE-035-15mX15m","price":1277.49,"currency_code":"GBP","in_stock":true},{"title":"16m x 10m","offer_id":55260886696284,"sku":"LDPE-035-16mX10m","price":998.74,"currency_code":"GBP","in_stock":true},{"title":"16m x 12m","offer_id":55260886729052,"sku":"LDPE-035-16mX12m","price":1208.74,"currency_code":"GBP","in_stock":true},{"title":"18m x 10m","offer_id":55260886761820,"sku":"LDPE-035-18mX10m","price":1128.74,"currency_code":"GBP","in_stock":true},{"title":"18m x 12m","offer_id":55260886794588,"sku":"LDPE-035-18mX12m","price":1353.74,"currency_code":"GBP","in_stock":true},{"title":"18m x 15m","offer_id":55260886827356,"sku":"LDPE-035-18mX15m","price":1681.24,"currency_code":"GBP","in_stock":true},{"title":"20m x 15m","offer_id":55260886860124,"sku":"LDPE-035-20mX15m","price":1873.74,"currency_code":"GBP","in_stock":true},{"title":"20m x 18m","offer_id":55260886892892,"sku":"LDPE-035-20mX18m","price":2123.74,"currency_code":"GBP","in_stock":true},{"title":"24m x 15m","offer_id":55260886925660,"sku":"LDPE-035-24mX15m","price":2123.74,"currency_code":"GBP","in_stock":true},{"title":"24m x 18m","offer_id":55260886958428,"sku":"LDPE-035-24mX18m","price":2498.74,"currency_code":"GBP","in_stock":true},{"title":"26m x 18m","offer_id":55260886991196,"sku":"LDPE-035-26mX18m","price":2623.74,"currency_code":"GBP","in_stock":true},{"title":"26m x 20m","offer_id":55260887023964,"sku":"LDPE-035-26mX20m","price":2873.74,"currency_code":"GBP","in_stock":true},{"title":"28m x 18m","offer_id":55260887056732,"sku":"LDPE-035-28mX18m","price":2998.74,"currency_code":"GBP","in_stock":true},{"title":"28m x 20m","offer_id":55260887089500,"sku":"LDPE-035-28mX20m","price":3248.74,"currency_code":"GBP","in_stock":true},{"title":"30m x 16m","offer_id":55260887122268,"sku":"LDPE-035-30mX16m","price":2498.74,"currency_code":"GBP","in_stock":true},{"title":"30m x 18m","offer_id":55260887155036,"sku":"LDPE-035-30mX18m","price":3112.49,"currency_code":"GBP","in_stock":true},{"title":"30m x 20m","offer_id":55260887187804,"sku":"LDPE-035-30mX20m","price":3373.74,"currency_code":"GBP","in_stock":true},{"title":"32m x 20m","offer_id":55260887220572,"sku":"LDPE-035-32mX20m","price":3438.74,"currency_code":"GBP","in_stock":true},{"title":"32m x 22m","offer_id":55260887253340,"sku":"LDPE-035-32mX22m","price":4123.74,"currency_code":"GBP","in_stock":true},{"title":"34m x 18m","offer_id":55260887286108,"sku":"LDPE-035-34mX18m","price":3498.74,"currency_code":"GBP","in_stock":true},{"title":"34m x 20m","offer_id":55260887318876,"sku":"LDPE-035-34mX20m","price":4112.49,"currency_code":"GBP","in_stock":true},{"title":"34m x 22m","offer_id":55260887351644,"sku":"LDPE-035-34mX22m","price":4362.49,"currency_code":"GBP","in_stock":true},{"title":"36m x 24m","offer_id":55260887384412,"sku":"LDPE-035-36mX24m","price":4862.49,"currency_code":"GBP","in_stock":true},{"title":"38m x 26m","offer_id":55260887417180,"sku":"LDPE-035-38mX26m","price":5737.49,"currency_code":"GBP","in_stock":true},{"title":"40m x 30m","offer_id":55260887449948,"sku":"LDPE-035-40mX30m","price":6987.49,"currency_code":"GBP","in_stock":true},{"title":"40m x 40m","offer_id":55260887482716,"sku":"LDPE-035-40mX40m","price":9487.49,"currency_code":"GBP","in_stock":true},{"title":"50m x 40m","offer_id":55260887515484,"sku":"LDPE-035-50mX40m","price":11612.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0889\/2035\/9260\/files\/fa8f2024d2e5006e3a03e5674476d531.jpg?v=1779040011"},{"product_id":"premium-pond-liner-underlay-sheets-heavy-duty-200gsm-best-selling-easy-cut-long-lasting-protection","title":"Pond Liner Underlay 200gsm | Heavy Duty Geotextile | Protects All Liner Types","description":"\u003ch2\u003ePond Liner Underlay 200gsm UK — Heavy Duty Geotextile | Essential Protection | All Liner Types\u003c\/h2\u003e\n\u003cp\u003eThe single most important accessory for any pond liner installation — our \u003cstrong\u003e200gsm Heavy Duty Geotextile Pond Liner Underlay\u003c\/strong\u003e is the protective foundation that keeps your pond liner in perfect condition for decades. Professional pond builders consider underlay non-negotiable: a pond liner without underlay is a pond liner waiting to fail.\u003c\/p\u003e\n\u003cp\u003eOur geotextile underlay is a heavy-duty 200gsm needle-punched polypropylene fabric — the same professional specification used in commercial reservoir lining, landscape drainage, and civil engineering projects. It acts as a cushion between the ground and your pond liner, absorbing the shock of stones, roots, and ground movement that would otherwise puncture or stress your investment over time.\u003c\/p\u003e\n\u003ch3\u003eFull Technical Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eNeedle-punched polypropylene geotextile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e200gsm (grams per square metre)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003eApproximately 2mm uncompressed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-30°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV Resistance\u003c\/td\u003e\n\u003ctd\u003eGood (protected by liner once installed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFish Safe\u003c\/td\u003e\n\u003ctd\u003e✅ Yes — inert polypropylene, non-toxic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuarantee\u003c\/td\u003e\n\u003ctd\u003e20 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eAll pond liner types: EPDM, Butyl, PVC, HDPE, LDPE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Permeability\u003c\/td\u003e\n\u003ctd\u003eHigh — allows drainage, does not trap water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColour\u003c\/td\u003e\n\u003ctd\u003eGrey\/Black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003e5 Reasons Underlay Is Essential\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e🛡️ \u003cstrong\u003eStone Puncture Protection\u003c\/strong\u003e — Even carefully prepared ground contains sharp stones that can work upward through soil movement. Underlay provides a tough buffer preventing these from reaching your liner\u003c\/li\u003e\n\u003cli\u003e🌱 \u003cstrong\u003eRoot Penetration Barrier\u003c\/strong\u003e — Aquatic plant roots can penetrate most liner materials over time. 200gsm geotextile significantly reduces this risk\u003c\/li\u003e\n\u003cli\u003e🌡️ \u003cstrong\u003eThermal Insulation\u003c\/strong\u003e — Provides a layer of insulation beneath the liner, helping maintain more stable water temperatures in winter\u003c\/li\u003e\n\u003cli\u003e⚡ \u003cstrong\u003eGround Movement Cushioning\u003c\/strong\u003e — Soils expand and contract with moisture changes and frost. Underlay absorbs this movement, preventing it from stressing the liner\u003c\/li\u003e\n\u003cli\u003e⏰ \u003cstrong\u003eExtended Liner Life\u003c\/strong\u003e — Pond liners installed with geotextile underlay last significantly longer than those without. The underlay investment pays for itself many times over\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eStep-by-Step Installation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcavate and clean\u003c\/strong\u003e — Dig your pond and remove all large stones, roots, glass, and sharp debris. The cleaner the substrate, the better\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoll out the underlay\u003c\/strong\u003e — Starting from one end, roll the underlay fabric into the excavation and press flat against all surfaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverlap at edges\u003c\/strong\u003e — Allow 30–40cm of underlay to extend beyond the pond edge in all directions, protecting the liner at its most vulnerable point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverlap joins\u003c\/strong\u003e — If multiple pieces are needed, overlap by at least 300mm. No adhesive needed — the liner weight holds all pieces in position\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall liner on top\u003c\/strong\u003e — Your chosen pond liner is installed directly on top of the underlay. The two layers work together to provide optimal protection\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eCompatible With All Pond Liner Types\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e✅ EPDM Pond Liner — all thicknesses\u003c\/li\u003e\n\u003cli\u003e✅ Butyl Rubber Pond Liner — all grades\u003c\/li\u003e\n\u003cli\u003e✅ PVC Pond Liner — all thicknesses\u003c\/li\u003e\n\u003cli\u003e✅ HDPE Pond Liner — all grades\u003c\/li\u003e\n\u003cli\u003e✅ LDPE Pond Liner — all grades\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e✅ Trust \u0026amp; Guarantee\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e✅ Fish Safe Certified — Inert polypropylene, safe for all aquatic life\u003c\/li\u003e\n\u003cli\u003e✅ Free UK Delivery — All mainland UK orders delivered free\u003c\/li\u003e\n\u003cli\u003e✅ 20 Year Guarantee — Long-term fabric warranty\u003c\/li\u003e\n\u003cli\u003e✅ Expert Advice Available — Our team can help calculate the exact quantity needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I really need underlay, or can I use sand instead?\u003c\/strong\u003e\u003cbr\u003eA: Sand is a good supplement but not a replacement for geotextile underlay. Sand can be washed away by water movement during pond filling, leaving voids that create pressure points. Use both sand (50mm base layer) AND geotextile underlay for the best protection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How much underlay do I need?\u003c\/strong\u003e\u003cbr\u003eA: Order the same dimensions as your pond liner. Add 30–40cm on each dimension for edge overlap — or simply order the next size up if you're between sizes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can underlay be used for other applications?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Our 200gsm geotextile is widely used for weed suppression in garden borders, drainage separation layers in decking and paving projects, and erosion control on slopes.\u003c\/p\u003e","brand":"PondLinersco.co.uk","offers":[{"title":"2m x 2m","offer_id":55312525164892,"sku":"UDL-200-2mX2m","price":31.24,"currency_code":"GBP","in_stock":true},{"title":"2.5m x 2m","offer_id":55312525197660,"sku":"UDL-200-25mX2m","price":38.74,"currency_code":"GBP","in_stock":true},{"title":"3m x 3m","offer_id":55312525230428,"sku":"UDL-200-3mX3m","price":71.24,"currency_code":"GBP","in_stock":true},{"title":"4m x 3m","offer_id":55312525263196,"sku":"UDL-200-4mX3m","price":91.24,"currency_code":"GBP","in_stock":true},{"title":"4m x 4m","offer_id":55312525295964,"sku":"UDL-200-4mX4m","price":112.49,"currency_code":"GBP","in_stock":true},{"title":"5m x 3m","offer_id":55312525328732,"sku":"UDL-200-5mX3m","price":104.99,"currency_code":"GBP","in_stock":true},{"title":"5m x 4m","offer_id":55312525361500,"sku":"UDL-200-5mX4m","price":143.74,"currency_code":"GBP","in_stock":true},{"title":"5m x 5m","offer_id":55312525394268,"sku":"UDL-200-5mX5m","price":178.74,"currency_code":"GBP","in_stock":true},{"title":"6m x 3m","offer_id":55312525427036,"sku":"UDL-200-6mX3m","price":141.24,"currency_code":"GBP","in_stock":true},{"title":"6m x 4m","offer_id":55312525459804,"sku":"UDL-200-6mX4m","price":178.74,"currency_code":"GBP","in_stock":true},{"title":"6m x 5m","offer_id":55312525492572,"sku":"UDL-200-6mX5m","price":216.24,"currency_code":"GBP","in_stock":true},{"title":"6m x 6m","offer_id":55312525525340,"sku":"UDL-200-6mX6m","price":253.74,"currency_code":"GBP","in_stock":true},{"title":"7m x 3m","offer_id":55312525558108,"sku":"UDL-200-7mX3m","price":153.74,"currency_code":"GBP","in_stock":true},{"title":"7m x 4m","offer_id":55312525590876,"sku":"UDL-200-7mX4m","price":203.74,"currency_code":"GBP","in_stock":true},{"title":"7m x 5m","offer_id":55312525623644,"sku":"UDL-200-7mX5m","price":248.74,"currency_code":"GBP","in_stock":true},{"title":"7m x 6m","offer_id":55312525656412,"sku":"UDL-200-7mX6m","price":293.74,"currency_code":"GBP","in_stock":true},{"title":"7m x 7m","offer_id":55312525689180,"sku":"UDL-200-7mX7m","price":353.74,"currency_code":"GBP","in_stock":true},{"title":"7.5m x 6m","offer_id":55312525721948,"sku":"UDL-200-75mX6m","price":319.99,"currency_code":"GBP","in_stock":true},{"title":"7.5m x 7m","offer_id":55312525754716,"sku":"UDL-200-75mX7m","price":373.74,"currency_code":"GBP","in_stock":true},{"title":"7.5m x 7.5m","offer_id":55312525787484,"sku":"UDL-200-75mX75m","price":393.74,"currency_code":"GBP","in_stock":true},{"title":"8m x 3m","offer_id":55312525820252,"sku":"UDL-200-8mX3m","price":178.74,"currency_code":"GBP","in_stock":true},{"title":"8m x 4m","offer_id":55312525853020,"sku":"UDL-200-8mX4m","price":228.74,"currency_code":"GBP","in_stock":true},{"title":"8m x 5m","offer_id":55312525885788,"sku":"UDL-200-8mX5m","price":281.24,"currency_code":"GBP","in_stock":true},{"title":"8m x 6m","offer_id":55312525918556,"sku":"UDL-200-8mX6m","price":341.24,"currency_code":"GBP","in_stock":true},{"title":"8m x 7m","offer_id":55312525951324,"sku":"UDL-200-8mX7m","price":393.74,"currency_code":"GBP","in_stock":true},{"title":"8m x 8m","offer_id":55312525984092,"sku":"UDL-200-8mX8m","price":454.99,"currency_code":"GBP","in_stock":true},{"title":"9m x 5m","offer_id":55312526016860,"sku":"UDL-200-9mX5m","price":319.99,"currency_code":"GBP","in_stock":true},{"title":"9m x 6m","offer_id":55312526049628,"sku":"UDL-200-9mX6m","price":382.49,"currency_code":"GBP","in_stock":true},{"title":"9m x 7m","offer_id":55312526082396,"sku":"UDL-200-9mX7m","price":441.24,"currency_code":"GBP","in_stock":true},{"title":"9m x 8m","offer_id":55312526115164,"sku":"UDL-200-9mX8m","price":498.74,"currency_code":"GBP","in_stock":true},{"title":"10m x 6m","offer_id":55312526147932,"sku":"UDL-200-10mX6m","price":428.74,"currency_code":"GBP","in_stock":true},{"title":"10m x 7m","offer_id":55312526180700,"sku":"UDL-200-10mX7m","price":499.99,"currency_code":"GBP","in_stock":true},{"title":"10m x 8m","offer_id":55312526213468,"sku":"UDL-200-10mX8m","price":566.24,"currency_code":"GBP","in_stock":true},{"title":"10m x 9m","offer_id":55312526246236,"sku":"UDL-200-10mX9m","price":624.99,"currency_code":"GBP","in_stock":true},{"title":"10m x 10m","offer_id":55312526279004,"sku":"UDL-200-10mX10m","price":703.74,"currency_code":"GBP","in_stock":true},{"title":"11m x 7m","offer_id":55312526311772,"sku":"UDL-200-11mX7m","price":543.74,"currency_code":"GBP","in_stock":true},{"title":"11m x 8m","offer_id":55312526344540,"sku":"UDL-200-11mX8m","price":616.24,"currency_code":"GBP","in_stock":true},{"title":"11m x 9m","offer_id":55312526377308,"sku":"UDL-200-11mX9m","price":693.74,"currency_code":"GBP","in_stock":true},{"title":"11m x 10m","offer_id":55312526410076,"sku":"UDL-200-11mX10m","price":777.49,"currency_code":"GBP","in_stock":true},{"title":"12m x 7m","offer_id":55312526442844,"sku":"UDL-200-12mX7m","price":591.24,"currency_code":"GBP","in_stock":true},{"title":"12m x 8m","offer_id":55312526475612,"sku":"UDL-200-12mX8m","price":674.99,"currency_code":"GBP","in_stock":true},{"title":"12m x 9m","offer_id":55312526508380,"sku":"UDL-200-12mX9m","price":758.74,"currency_code":"GBP","in_stock":true},{"title":"12m x 10m","offer_id":55312526541148,"sku":"UDL-200-12mX10m","price":842.49,"currency_code":"GBP","in_stock":true},{"title":"12m x 12m","offer_id":55312526573916,"sku":"UDL-200-12mX12m","price":998.74,"currency_code":"GBP","in_stock":true},{"title":"13m x 8m","offer_id":55312526606684,"sku":"UDL-200-13mX8m","price":734.99,"currency_code":"GBP","in_stock":true},{"title":"13m x 9m","offer_id":55312526639452,"sku":"UDL-200-13mX9m","price":821.24,"currency_code":"GBP","in_stock":true},{"title":"13m x 10m","offer_id":55312526672220,"sku":"UDL-200-13mX10m","price":902.49,"currency_code":"GBP","in_stock":true},{"title":"13m x 12m","offer_id":55312526704988,"sku":"UDL-200-13mX12m","price":1091.24,"currency_code":"GBP","in_stock":true},{"title":"13m x 13m","offer_id":55312526737756,"sku":"UDL-200-13mX13m","price":1174.99,"currency_code":"GBP","in_stock":true},{"title":"14m x 8m","offer_id":55312526770524,"sku":"UDL-200-14mX8m","price":787.49,"currency_code":"GBP","in_stock":true},{"title":"14m x 9m","offer_id":55312526803292,"sku":"UDL-200-14mX9m","price":873.74,"currency_code":"GBP","in_stock":true},{"title":"14m x 10m","offer_id":55312526836060,"sku":"UDL-200-14mX10m","price":984.99,"currency_code":"GBP","in_stock":true},{"title":"14m x 12m","offer_id":55312526868828,"sku":"UDL-200-14mX12m","price":1178.74,"currency_code":"GBP","in_stock":true},{"title":"14m x 14m","offer_id":55312526901596,"sku":"UDL-200-14mX14m","price":1373.74,"currency_code":"GBP","in_stock":true},{"title":"15m x 8m","offer_id":55312526934364,"sku":"UDL-200-15mX8m","price":848.74,"currency_code":"GBP","in_stock":true},{"title":"15m x 9m","offer_id":55312526967132,"sku":"UDL-200-15mX9m","price":959.99,"currency_code":"GBP","in_stock":true},{"title":"15m x 10m","offer_id":55312526999900,"sku":"UDL-200-15mX10m","price":1053.74,"currency_code":"GBP","in_stock":true},{"title":"15m x 12m","offer_id":55312527032668,"sku":"UDL-200-15mX12m","price":1248.74,"currency_code":"GBP","in_stock":true},{"title":"15m x 15m","offer_id":55312527065436,"sku":"UDL-200-15mX15m","price":1569.99,"currency_code":"GBP","in_stock":true},{"title":"16m x 10m","offer_id":55312527098204,"sku":"UDL-200-16mX10m","price":1123.74,"currency_code":"GBP","in_stock":true},{"title":"16m x 12m","offer_id":55312527130972,"sku":"UDL-200-16mX12m","price":1297.49,"currency_code":"GBP","in_stock":true},{"title":"18m x 10m","offer_id":55312527163740,"sku":"UDL-200-18mX10m","price":1137.49,"currency_code":"GBP","in_stock":true},{"title":"18m x 12m","offer_id":55312527196508,"sku":"UDL-200-18mX12m","price":1449.99,"currency_code":"GBP","in_stock":true},{"title":"18m x 15m","offer_id":55312527229276,"sku":"UDL-200-18mX15m","price":1748.74,"currency_code":"GBP","in_stock":true},{"title":"20m x 15m","offer_id":55312527262044,"sku":"UDL-200-20mX15m","price":2237.49,"currency_code":"GBP","in_stock":true},{"title":"20m x 18m","offer_id":55312527294812,"sku":"UDL-200-20mX18m","price":2498.74,"currency_code":"GBP","in_stock":true},{"title":"24m x 15m","offer_id":55312527327580,"sku":"UDL-200-24mX15m","price":2637.49,"currency_code":"GBP","in_stock":true},{"title":"24m x 18m","offer_id":55312527360348,"sku":"UDL-200-24mX18m","price":2862.49,"currency_code":"GBP","in_stock":true},{"title":"26m x 18m","offer_id":55312527393116,"sku":"UDL-200-26mX18m","price":3112.49,"currency_code":"GBP","in_stock":true},{"title":"26m x 20m","offer_id":55312527425884,"sku":"UDL-200-26mX20m","price":3362.49,"currency_code":"GBP","in_stock":true},{"title":"28m x 18m","offer_id":55312527458652,"sku":"UDL-200-28mX18m","price":3487.49,"currency_code":"GBP","in_stock":true},{"title":"28m x 20m","offer_id":55312527491420,"sku":"UDL-200-28mX20m","price":3737.49,"currency_code":"GBP","in_stock":true},{"title":"30m x 16m","offer_id":55312527524188,"sku":"UDL-200-30mX16m","price":3112.49,"currency_code":"GBP","in_stock":true},{"title":"30m x 18m","offer_id":55312527556956,"sku":"UDL-200-30mX18m","price":3612.49,"currency_code":"GBP","in_stock":true},{"title":"30m x 20m","offer_id":55312527589724,"sku":"UDL-200-30mX20m","price":3904.99,"currency_code":"GBP","in_stock":true},{"title":"32m x 20m","offer_id":55312527622492,"sku":"UDL-200-32mX20m","price":3987.49,"currency_code":"GBP","in_stock":true},{"title":"32m x 22m","offer_id":55312527655260,"sku":"UDL-200-32mX22m","price":4862.49,"currency_code":"GBP","in_stock":true},{"title":"34m x 18m","offer_id":55312527688028,"sku":"UDL-200-34mX18m","price":4237.49,"currency_code":"GBP","in_stock":true},{"title":"34m x 20m","offer_id":55312527720796,"sku":"UDL-200-34mX20m","price":4862.49,"currency_code":"GBP","in_stock":true},{"title":"34m x 22m","offer_id":55312527753564,"sku":"UDL-200-34mX22m","price":4998.74,"currency_code":"GBP","in_stock":true},{"title":"34m x 26m","offer_id":55312527786332,"sku":"UDL-200-34mX26m","price":6098.74,"currency_code":"GBP","in_stock":true},{"title":"36m x 24m","offer_id":55312527819100,"sku":"UDL-200-36mX24m","price":5987.49,"currency_code":"GBP","in_stock":true},{"title":"36m x 27m","offer_id":55312527851868,"sku":"UDL-200-36mX27m","price":6696.24,"currency_code":"GBP","in_stock":true},{"title":"38m x 26m","offer_id":55312527884636,"sku":"UDL-200-38mX26m","price":6709.99,"currency_code":"GBP","in_stock":true},{"title":"40m x 20m","offer_id":55312527917404,"sku":"UDL-200-40mX20m","price":5301.24,"currency_code":"GBP","in_stock":true},{"title":"40m x 30m","offer_id":55312527950172,"sku":"UDL-200-40mX30m","price":7487.49,"currency_code":"GBP","in_stock":true},{"title":"40m x 40m","offer_id":55312527982940,"sku":"UDL-200-40mX40m","price":9998.74,"currency_code":"GBP","in_stock":true},{"title":"45m x 40m","offer_id":55312528015708,"sku":"UDL-200-45mX40m","price":11123.74,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0889\/2035\/9260\/files\/3c07bd9ca0aaf2ad2f72420348d9eded.jpg?v=1779040211"},{"product_id":"bonda-g4-clear-pond-sealer-professional-waterproof-concrete-amp-render-sealant-for-long-lasting-pond-protection","title":"Clear Pond Sealer | Waterproof Concrete \u0026 Render | Fish Safe Formula","description":"\u003ch2\u003eClear Pond Sealer UK — Waterproof Concrete \u0026amp; Render | Fish Safe Formula | Stops Lime Leaching\u003c\/h2\u003e\n\u003cp\u003eNew concrete, mortar, and render release alkaline lime compounds that are harmful — even lethal — to pond fish and aquatic wildlife. Our \u003cstrong\u003eClear Pond Sealer\u003c\/strong\u003e is the essential protective coating that creates a safe barrier between concrete surfaces and pond water, making any concrete pond feature immediately fish-safe after application and curing.\u003c\/p\u003e\n\u003cp\u003eWhether you're finishing the coping edge of a new liner pond, sealing a rendered concrete shell, waterproofing brick edging, or reinforcing existing concrete pond walls, our fish-safe pond sealer delivers professional results accessible to any DIY pond builder. It dries clear, leaving no visual impact while providing complete chemical protection.\u003c\/p\u003e\n\u003ch3\u003eFull Technical Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eWater-based clear pond sealer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormulation\u003c\/td\u003e\n\u003ctd\u003eAcrylic polymer, fish-safe additives\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFish Safe\u003c\/td\u003e\n\u003ctd\u003e✅ Yes — certified safe when fully cured\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoverage\u003c\/td\u003e\n\u003ctd\u003e5–8m² per litre (depending on surface porosity)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDry Time\u003c\/td\u003e\n\u003ctd\u003e4–6 hours touch dry; 24 hours fully cured\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature\u003c\/td\u003e\n\u003ctd\u003eApply above 5°C; stable to -20°C when cured\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Coats\u003c\/td\u003e\n\u003ctd\u003e2 coats recommended for full protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuitable Surfaces\u003c\/td\u003e\n\u003ctd\u003eConcrete, render, brick, mortar, stone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWaterproofing\u003c\/td\u003e\n\u003ctd\u003eExcellent — forms continuous impermeable membrane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColour When Dry\u003c\/td\u003e\n\u003ctd\u003eCompletely clear — invisible finish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003e5 Use Cases for Pond Sealer\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e🏗️ \u003cstrong\u003eNew Concrete Pond Edges\u003c\/strong\u003e — Sealing freshly laid concrete coping stones and mortar beds before pond filling — prevents lime leaching during the critical curing period\u003c\/li\u003e\n\u003cli\u003e🧱 \u003cstrong\u003eRendered Concrete Pond Shells\u003c\/strong\u003e — Creating a complete fish-safe waterproof membrane on rendered concrete ponds, both new construction and renovation\u003c\/li\u003e\n\u003cli\u003e🌊 \u003cstrong\u003eBrick-Edged Pond Features\u003c\/strong\u003e — Sealing brick and mortar joints in formal raised pond walls to prevent chemical leaching and water seepage\u003c\/li\u003e\n\u003cli\u003e🩹 \u003cstrong\u003ePond Repair and Renovation\u003c\/strong\u003e — Restoring existing concrete ponds with hairline cracks or minor seepage — the sealer bridges fine cracks up to 0.5mm\u003c\/li\u003e\n\u003cli\u003e💧 \u003cstrong\u003eLiner Joins and Overlaps\u003c\/strong\u003e — Additional sealing of pond liner joins and overlap areas as a secondary waterproofing layer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eStep-by-Step Application Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrepare the surface\u003c\/strong\u003e — Clean all concrete, mortar, and stone surfaces thoroughly. Remove loose material, moss, algae, and existing coatings. Allow to dry completely\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFirst coat application\u003c\/strong\u003e — Apply pond sealer generously using a brush or roller. Work into all crevices, joins, and corners. Ensure complete, even coverage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAllow to dry\u003c\/strong\u003e — First coat requires 4–6 hours drying time at 15–20°C. Do not apply second coat until first coat is fully touch-dry\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecond coat\u003c\/strong\u003e — Apply second coat, working in a direction perpendicular to the first coat. This ensures complete coverage and eliminates any pinholes or voids\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCure and fill\u003c\/strong\u003e — Allow 24 hours full cure time before filling the pond. For maximum fish safety, fill with water, leave 24 hours, completely empty, then refill before introducing fish\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eWhy Pond Sealer Is Essential\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLime toxicity — uncured concrete releases highly alkaline lime that kills fish and amphibians rapidly\u003c\/li\u003e\n\u003cli\u003eLong-term pH stability — sealed concrete maintains stable water pH\u003c\/li\u003e\n\u003cli\u003eWaterproofing — prevents water seeping through porous concrete and mortar\u003c\/li\u003e\n\u003cli\u003eEasy application — brush or roll on like ordinary exterior paint, no specialist skills required\u003c\/li\u003e\n\u003cli\u003eInvisible finish — clear formulation preserves the natural appearance of stone and concrete\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e✅ Trust \u0026amp; Guarantee\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e✅ Fish Safe Certified — Tested and certified safe for fish and aquatic wildlife when cured\u003c\/li\u003e\n\u003cli\u003e✅ Free UK Delivery — All mainland UK orders delivered free\u003c\/li\u003e\n\u003cli\u003e✅ Professional Formula — Same formulation used by professional pond contractors\u003c\/li\u003e\n\u003cli\u003e✅ Expert Advice Available — Application advice from our pond construction specialists\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How long after applying pond sealer can I introduce fish?\u003c\/strong\u003e\u003cbr\u003eA: Allow minimum 24 hours after the final coat before filling the pond. Once filled, change the water once after 24 hours, then it is safe to introduce fish. Test pH (should be 7.0–8.0) before introducing fish.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many coats of pond sealer do I need?\u003c\/strong\u003e\u003cbr\u003eA: We always recommend two coats for complete protection. Two coats applied in perpendicular directions ensures complete, reliable coverage with no pinholes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use pond sealer on an existing pond with fish in it?\u003c\/strong\u003e\u003cbr\u003eA: No. Fish must be removed to a holding vessel before application. Once the sealer is fully cured, the water changed, and pH confirmed stable, fish can be returned.\u003c\/p\u003e","brand":"PondLinersco.co.uk","offers":[{"title":"Clear - 1KG","offer_id":55322639532380,"sku":"SEALER-CLEAR-Clear-1KG","price":107.49,"currency_code":"GBP","in_stock":true},{"title":"Clear - 2.5KG","offer_id":55322639565148,"sku":"SEALER-CLEAR-Clear-25KG","price":199.99,"currency_code":"GBP","in_stock":true},{"title":"Clear - 5KG","offer_id":55322639597916,"sku":"SEALER-CLEAR-Clear-5KG","price":266.24,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0889\/2035\/9260\/files\/dd2021b618b786db4450749fa928211e.jpg?v=1779039594"},{"product_id":"uv-resistant-for-a-lifetime-of-enjoyment-backed-by-a-25-year-guarantee-against-sunlight-damage","title":"HDPE Pond Liner 0.35mm | 25 Year Guarantee | Fish Safe","description":"\u003ch2\u003eHDPE Pond Liner UK — Heavy Duty | UV Stabilised | Long Guarantee | Fish Safe | Free Delivery\u003c\/h2\u003e\n\u003cp\u003eFor large-scale pond projects, commercial water features, and installations requiring maximum UV stability and chemical resistance, our \u003cstrong\u003eHDPE Pond Liner\u003c\/strong\u003e is the professional's choice. High-Density Polyethylene is one of the world's most widely used liner materials for reservoirs, commercial ponds, and large water containment systems — and our HDPE pond liner brings that industrial-grade performance to UK garden and commercial pond installations.\u003c\/p\u003e\n\u003cp\u003eHDPE (High-Density Polyethylene) is engineered for long-term outdoor performance. Its inherent density creates exceptional resistance to UV radiation, chemical attack, and biological degradation — making it the preferred material for ponds where environmental exposure is extreme and liner replacement would be prohibitively expensive.\u003c\/p\u003e\n\u003ch3\u003eFull Technical Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHigh-Density Polyethylene (HDPE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e0.35mm–1.0mm+ (by grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-40°C to +60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV Resistance\u003c\/td\u003e\n\u003ctd\u003eExcellent — UV stabilised with carbon black pigment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFish Safe\u003c\/td\u003e\n\u003ctd\u003e✅ Yes — food-grade polyethylene, certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuarantee\u003c\/td\u003e\n\u003ctd\u003e25–40 Years (by grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical Resistance\u003c\/td\u003e\n\u003ctd\u003eOutstanding — resists acids, alkalis, oils\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlexibility\u003c\/td\u003e\n\u003ctd\u003eGood — less flexible than EPDM; best for regular shapes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColour\u003c\/td\u003e\n\u003ctd\u003eBlack (UV-stable carbon black pigment)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003e5 Use Cases for HDPE Pond Liner\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e🏭 \u003cstrong\u003eCommercial Fish Farms\u003c\/strong\u003e — HDPE's food-grade certification makes it ideal for aquaculture and commercial fish production\u003c\/li\u003e\n\u003cli\u003e💧 \u003cstrong\u003eLarge Agricultural Ponds\u003c\/strong\u003e — Irrigation reservoirs and livestock water storage where long-term chemical resistance is essential\u003c\/li\u003e\n\u003cli\u003e🌊 \u003cstrong\u003eCanal and Waterway Lining\u003c\/strong\u003e — Commercial waterway projects where HDPE's tensile strength and weldability are required\u003c\/li\u003e\n\u003cli\u003e🏗️ \u003cstrong\u003eFormal Concrete-Edged Ponds\u003c\/strong\u003e — HDPE's dimensional stability suits rectangular and regular-shaped formal ponds\u003c\/li\u003e\n\u003cli\u003e☀️ \u003cstrong\u003eHigh-UV Exposure Sites\u003c\/strong\u003e — Where continuous direct sunlight over decades is a factor — HDPE's UV stabilisation is industry-leading\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eStep-by-Step Installation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrepare a smooth substrate\u003c\/strong\u003e — A compacted sand layer of 50–100mm provides the ideal base for HDPE installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnderlay is essential\u003c\/strong\u003e — Lay 200gsm geotextile underlay before the HDPE liner to protect against stone punctures\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition the HDPE\u003c\/strong\u003e — HDPE is heavier and less flexible — plan carefully before positioning. Large sheets may require additional labour\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeam welding for joins\u003c\/strong\u003e — Where multiple sheets are required, HDPE must be joined by hot-air or extrusion welding — a professional process\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnchor and backfill\u003c\/strong\u003e — HDPE edges are typically anchored in a concrete anchor trench or under concrete coping\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eWhy Choose HDPE?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIndustry-leading UV stability via carbon-black pigmentation\u003c\/li\u003e\n\u003cli\u003eOutstanding chemical resistance — resists acids, alkalis, and oils\u003c\/li\u003e\n\u003cli\u003eDimensional stability — does not creep or deform under load\u003c\/li\u003e\n\u003cli\u003eWeldable — can be heat-welded into any shape for commercial projects\u003c\/li\u003e\n\u003cli\u003e25–40 year guarantees reflecting proven longevity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e✅ Trust \u0026amp; Guarantee\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e✅ Fish Safe Certified — Food-grade polyethylene, safe for all aquatic life\u003c\/li\u003e\n\u003cli\u003e✅ Free UK Delivery — All mainland UK orders delivered free\u003c\/li\u003e\n\u003cli\u003e✅ 25–40 Year Guarantee — Long-term material warranty by grade\u003c\/li\u003e\n\u003cli\u003e✅ Expert Advice Available — Commercial and large-scale project specialists on hand\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is HDPE easier or harder to install than EPDM?\u003c\/strong\u003e\u003cbr\u003eA: HDPE is less flexible, making it better suited to regular pond shapes. For irregular naturalistic ponds, EPDM is typically easier to install. For rectangular or commercial ponds, HDPE is excellent.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I join HDPE myself?\u003c\/strong\u003e\u003cbr\u003eA: HDPE joins require heat welding — a professional process. For DIY installations, plan your pond size to use a single HDPE sheet without joins, or use EPDM if joins are needed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does HDPE compare to EPDM for a garden pond?\u003c\/strong\u003e\u003cbr\u003eA: For standard garden ponds with natural shapes, EPDM is typically the better choice due to superior flexibility. HDPE excels in large, regular-shaped installations and environments with extreme chemical or UV exposure.\u003c\/p\u003e","brand":"PondLinersco.co.uk","offers":[{"title":"2.5m x 2.5m","offer_id":55642477756764,"sku":"PL-IHD-2.5x2.5","price":44.6,"currency_code":"GBP","in_stock":true},{"title":"3m x 3m","offer_id":55642477789532,"sku":"PL-IHD-3x3","price":54.16,"currency_code":"GBP","in_stock":true},{"title":"3m x 4m","offer_id":55642477822300,"sku":"PL-IHD-3x4","price":68.51,"currency_code":"GBP","in_stock":true},{"title":"3m x 5m","offer_id":55642477855068,"sku":"PL-IHD-3x5","price":89.22,"currency_code":"GBP","in_stock":true},{"title":"4m x 4m","offer_id":55642477887836,"sku":"PL-IHD-4x4","price":84.45,"currency_code":"GBP","in_stock":true},{"title":"4m x 5m","offer_id":55642477920604,"sku":"PL-IHD-4x5","price":105.16,"currency_code":"GBP","in_stock":true},{"title":"4m x 6m","offer_id":55642477953372,"sku":"PL-IHD-4x6","price":117.91,"currency_code":"GBP","in_stock":true},{"title":"4m x 8m","offer_id":55642477986140,"sku":"PL-IHD-4x8","price":156.18,"currency_code":"GBP","in_stock":true},{"title":"4m x 9m","offer_id":55642478018908,"sku":"PL-IHD-4x9","price":175.3,"currency_code":"GBP","in_stock":true},{"title":"5m x 5m","offer_id":55642478051676,"sku":"PL-IHD-5x5","price":125.89,"currency_code":"GBP","in_stock":true},{"title":"5m x 6m","offer_id":55642478084444,"sku":"PL-IHD-5x6","price":148.2,"currency_code":"GBP","in_stock":true},{"title":"5m x 7m","offer_id":55642478117212,"sku":"PL-IHD-5x7","price":167.34,"currency_code":"GBP","in_stock":true},{"title":"5m x 8m","offer_id":55642478149980,"sku":"PL-IHD-5x8","price":194.42,"currency_code":"GBP","in_stock":true},{"title":"5m x 9m","offer_id":55642478182748,"sku":"PL-IHD-5x9","price":213.55,"currency_code":"GBP","in_stock":true},{"title":"6m x 6m","offer_id":55642478215516,"sku":"PL-IHD-6x6","price":175.3,"currency_code":"GBP","in_stock":true},{"title":"6m x 5m","offer_id":55642478248284,"sku":"PL-IHD-6x5","price":162.55,"currency_code":"GBP","in_stock":true},{"title":"6m x 7m","offer_id":55642478281052,"sku":"PL-IHD-6x7","price":196.02,"currency_code":"GBP","in_stock":true},{"title":"6m x 8m","offer_id":55642478313820,"sku":"PL-IHD-6x8","price":227.9,"currency_code":"GBP","in_stock":true},{"title":"6m x 9m","offer_id":55642478346588,"sku":"PL-IHD-6x9","price":247.03,"currency_code":"GBP","in_stock":true},{"title":"7m x 4m","offer_id":55642478379356,"sku":"PL-IHD-7x4","price":219.59,"currency_code":"GBP","in_stock":true},{"title":"7m x 5m","offer_id":55642478412124,"sku":"PL-IHD-7x5","price":250.43,"currency_code":"GBP","in_stock":true},{"title":"7m x 7m","offer_id":55642478444892,"sku":"PL-IHD-7x7","price":261.36,"currency_code":"GBP","in_stock":true},{"title":"7m x 8m","offer_id":55642478477660,"sku":"PL-IHD-7x8","price":285.27,"currency_code":"GBP","in_stock":true},{"title":"7m x 9m","offer_id":55642478510428,"sku":"PL-IHD-7x9","price":301.21,"currency_code":"GBP","in_stock":true},{"title":"7m x 11m","offer_id":55642478543196,"sku":"PL-IHD-7x11","price":355.4,"currency_code":"GBP","in_stock":true},{"title":"8m x 8m","offer_id":55642478575964,"sku":"PL-IHD-8x8","price":301.21,"currency_code":"GBP","in_stock":true},{"title":"8m x 9m","offer_id":55642478608732,"sku":"PL-IHD-8x9","price":339.46,"currency_code":"GBP","in_stock":true},{"title":"8m x 10m","offer_id":55642478641500,"sku":"PL-IHD-8x10","price":371.34,"currency_code":"GBP","in_stock":true},{"title":"8m x 12m","offer_id":55642478674268,"sku":"PL-IHD-8x12","price":443.05,"currency_code":"GBP","in_stock":true},{"title":"9m x 6m","offer_id":55642478707036,"sku":"PL-IHD-9x6","price":392.98,"currency_code":"GBP","in_stock":true},{"title":"9m x 9m","offer_id":55642478739804,"sku":"PL-IHD-9x9","price":425.53,"currency_code":"GBP","in_stock":true},{"title":"9m x 10m","offer_id":55642478772572,"sku":"PL-IHD-9x10","price":435.09,"currency_code":"GBP","in_stock":true},{"title":"9m x 12m","offer_id":55642478805340,"sku":"PL-IHD-9x12","price":487.67,"currency_code":"GBP","in_stock":true},{"title":"10m x 1m","offer_id":55642478838108,"sku":"PL-IHD-10x1","price":73.29,"currency_code":"GBP","in_stock":true},{"title":"10m x 2m","offer_id":55642478870876,"sku":"PL-IHD-10x2","price":106.76,"currency_code":"GBP","in_stock":true},{"title":"10m x 6m","offer_id":55642478903644,"sku":"PL-IHD-10x6","price":283.68,"currency_code":"GBP","in_stock":true},{"title":"10m x 7m","offer_id":55642478936412,"sku":"PL-IHD-10x7","price":318.74,"currency_code":"GBP","in_stock":true},{"title":"10m x 10m","offer_id":55642478969180,"sku":"PL-IHD-10x10","price":482.9,"currency_code":"GBP","in_stock":true},{"title":"10m x 11m","offer_id":55642479001948,"sku":"PL-IHD-10x11","price":498.84,"currency_code":"GBP","in_stock":true},{"title":"10m x 12m","offer_id":55642479034716,"sku":"PL-IHD-10x12","price":581.71,"currency_code":"GBP","in_stock":true},{"title":"12m x 12m","offer_id":55642479067484,"sku":"PL-IHD-12x12","price":653.42,"currency_code":"GBP","in_stock":true},{"title":"12m x 13m","offer_id":55642479100252,"sku":"PL-IHD-12x13","price":710.8,"currency_code":"GBP","in_stock":true},{"title":"12m x 15m","offer_id":55642479133020,"sku":"PL-IHD-12x15","price":779.34,"currency_code":"GBP","in_stock":true},{"title":"12m x 18m","offer_id":55642479165788,"sku":"PL-IHD-12x18","price":929.15,"currency_code":"GBP","in_stock":true},{"title":"13m x 13m","offer_id":55642479198556,"sku":"PL-IHD-13x13","price":728.34,"currency_code":"GBP","in_stock":true},{"title":"14m x 14m","offer_id":55642479231324,"sku":"PL-IHD-14x14","price":838.3,"currency_code":"GBP","in_stock":true},{"title":"18m x 20m","offer_id":55642479264092,"sku":"PL-IHD-18x20","price":1541.15,"currency_code":"GBP","in_stock":true},{"title":"20m x 30m","offer_id":55642479296860,"sku":"PL-IHD-20x30","price":2549.99,"currency_code":"GBP","in_stock":true},{"title":"22m x 32m","offer_id":55642479329628,"sku":"PL-IHD-22x32","price":2868.74,"currency_code":"GBP","in_stock":true},{"title":"26m x 38m","offer_id":55642479362396,"sku":"PL-IHD-26x38","price":4143.73,"currency_code":"GBP","in_stock":true},{"title":"30m x 40m","offer_id":55642479395164,"sku":"PL-IHD-30x40","price":4779.64,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0889\/2035\/9260\/files\/75d8c572f58ca2b72eaa1f78ec4f5080.jpg?v=1779039747"},{"product_id":"hdpe-pond-liner-40-year-guarantee-free-underlay","title":"HDPE Pond Liner UK | 40 Year Guarantee | Includes Free Underlay | UV Stabilised","description":"\u003ch2\u003ePond Liner Underlay 200gsm UK — Heavy Duty Geotextile | Essential Protection | All Liner Types\u003c\/h2\u003e\n\u003cp\u003eThe single most important accessory for any pond liner installation — our \u003cstrong\u003e200gsm Heavy Duty Geotextile Pond Liner Underlay\u003c\/strong\u003e is the protective foundation that keeps your pond liner in perfect condition for decades. Professional pond builders consider underlay non-negotiable: a pond liner without underlay is a pond liner waiting to fail.\u003c\/p\u003e\n\u003cp\u003eOur geotextile underlay is a heavy-duty 200gsm needle-punched polypropylene fabric — the same professional specification used in commercial reservoir lining, landscape drainage, and civil engineering projects. It acts as a cushion between the ground and your pond liner, absorbing the shock of stones, roots, and ground movement that would otherwise puncture or stress your investment over time.\u003c\/p\u003e\n\u003ch3\u003eFull Technical Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eNeedle-punched polypropylene geotextile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e200gsm (grams per square metre)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003eApproximately 2mm uncompressed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-30°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV Resistance\u003c\/td\u003e\n\u003ctd\u003eGood (protected by liner once installed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFish Safe\u003c\/td\u003e\n\u003ctd\u003e✅ Yes — inert polypropylene, non-toxic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuarantee\u003c\/td\u003e\n\u003ctd\u003e20 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eAll pond liner types: EPDM, Butyl, PVC, HDPE, LDPE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Permeability\u003c\/td\u003e\n\u003ctd\u003eHigh — allows drainage, does not trap water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColour\u003c\/td\u003e\n\u003ctd\u003eGrey\/Black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003e5 Reasons Underlay Is Essential\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e🛡️ \u003cstrong\u003eStone Puncture Protection\u003c\/strong\u003e — Even carefully prepared ground contains sharp stones that can work upward through soil movement. Underlay provides a tough buffer preventing these from reaching your liner\u003c\/li\u003e\n\u003cli\u003e🌱 \u003cstrong\u003eRoot Penetration Barrier\u003c\/strong\u003e — Aquatic plant roots can penetrate most liner materials over time. 200gsm geotextile significantly reduces this risk\u003c\/li\u003e\n\u003cli\u003e🌡️ \u003cstrong\u003eThermal Insulation\u003c\/strong\u003e — Provides a layer of insulation beneath the liner, helping maintain more stable water temperatures in winter\u003c\/li\u003e\n\u003cli\u003e⚡ \u003cstrong\u003eGround Movement Cushioning\u003c\/strong\u003e — Soils expand and contract with moisture changes and frost. Underlay absorbs this movement, preventing it from stressing the liner\u003c\/li\u003e\n\u003cli\u003e⏰ \u003cstrong\u003eExtended Liner Life\u003c\/strong\u003e — Pond liners installed with geotextile underlay last significantly longer than those without. The underlay investment pays for itself many times over\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eStep-by-Step Installation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcavate and clean\u003c\/strong\u003e — Dig your pond and remove all large stones, roots, glass, and sharp debris. The cleaner the substrate, the better\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoll out the underlay\u003c\/strong\u003e — Starting from one end, roll the underlay fabric into the excavation and press flat against all surfaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverlap at edges\u003c\/strong\u003e — Allow 30–40cm of underlay to extend beyond the pond edge in all directions, protecting the liner at its most vulnerable point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverlap joins\u003c\/strong\u003e — If multiple pieces are needed, overlap by at least 300mm. No adhesive needed — the liner weight holds all pieces in position\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall liner on top\u003c\/strong\u003e — Your chosen pond liner is installed directly on top of the underlay. The two layers work together to provide optimal protection\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eCompatible With All Pond Liner Types\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e✅ EPDM Pond Liner — all thicknesses\u003c\/li\u003e\n\u003cli\u003e✅ Butyl Rubber Pond Liner — all grades\u003c\/li\u003e\n\u003cli\u003e✅ PVC Pond Liner — all thicknesses\u003c\/li\u003e\n\u003cli\u003e✅ HDPE Pond Liner — all grades\u003c\/li\u003e\n\u003cli\u003e✅ LDPE Pond Liner — all grades\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e✅ Trust \u0026amp; Guarantee\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e✅ Fish Safe Certified — Inert polypropylene, safe for all aquatic life\u003c\/li\u003e\n\u003cli\u003e✅ Free UK Delivery — All mainland UK orders delivered free\u003c\/li\u003e\n\u003cli\u003e✅ 20 Year Guarantee — Long-term fabric warranty\u003c\/li\u003e\n\u003cli\u003e✅ Expert Advice Available — Our team can help calculate the exact quantity needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I really need underlay, or can I use sand instead?\u003c\/strong\u003e\u003cbr\u003eA: Sand is a good supplement but not a replacement for geotextile underlay. Sand can be washed away by water movement during pond filling, leaving voids that create pressure points. Use both sand (50mm base layer) AND geotextile underlay for the best protection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How much underlay do I need?\u003c\/strong\u003e\u003cbr\u003eA: Order the same dimensions as your pond liner. Add 30–40cm on each dimension for edge overlap — or simply order the next size up if you're between sizes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can underlay be used for other applications?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Our 200gsm geotextile is widely used for weed suppression in garden borders, drainage separation layers in decking and paving projects, and erosion control on slopes.\u003c\/p\u003e","brand":"PondLinersco.co.uk","offers":[{"title":"2.5m x 2.5m","offer_id":57663843565916,"sku":null,"price":40.73,"currency_code":"GBP","in_stock":true},{"title":"3m x 3m","offer_id":57663843598684,"sku":null,"price":48.73,"currency_code":"GBP","in_stock":true},{"title":"3m x 4m","offer_id":57663843631452,"sku":null,"price":66.98,"currency_code":"GBP","in_stock":true},{"title":"3m x 5m","offer_id":57663843664220,"sku":null,"price":84.98,"currency_code":"GBP","in_stock":true},{"title":"3m x 6m","offer_id":57663843696988,"sku":null,"price":101.73,"currency_code":"GBP","in_stock":true},{"title":"4m x 4m","offer_id":57663843729756,"sku":null,"price":86.98,"currency_code":"GBP","in_stock":true},{"title":"4m x 5m","offer_id":57663843762524,"sku":null,"price":112.48,"currency_code":"GBP","in_stock":true},{"title":"4m x 6m","offer_id":57663843795292,"sku":null,"price":134.98,"currency_code":"GBP","in_stock":true},{"title":"4m x 7m","offer_id":57663843828060,"sku":null,"price":156.73,"currency_code":"GBP","in_stock":true},{"title":"4m x 8m","offer_id":57663843860828,"sku":null,"price":178.73,"currency_code":"GBP","in_stock":true},{"title":"4m x 9m","offer_id":57663843893596,"sku":null,"price":202.48,"currency_code":"GBP","in_stock":true},{"title":"4m x 10m","offer_id":57663843926364,"sku":null,"price":224.98,"currency_code":"GBP","in_stock":true},{"title":"5m x 5m","offer_id":57663843959132,"sku":null,"price":139.23,"currency_code":"GBP","in_stock":true},{"title":"5m x 6m","offer_id":57663843991900,"sku":null,"price":168.73,"currency_code":"GBP","in_stock":true},{"title":"5m x 7m","offer_id":57663844024668,"sku":null,"price":196.23,"currency_code":"GBP","in_stock":true},{"title":"5m x 8m","offer_id":57663844057436,"sku":null,"price":224.98,"currency_code":"GBP","in_stock":true},{"title":"5m x 9m","offer_id":57663844090204,"sku":null,"price":252.48,"currency_code":"GBP","in_stock":true},{"title":"5m x 10m","offer_id":57663844122972,"sku":null,"price":279.98,"currency_code":"GBP","in_stock":true},{"title":"6m x 6m","offer_id":57663844155740,"sku":null,"price":202.48,"currency_code":"GBP","in_stock":true},{"title":"6m x 7m","offer_id":57663844188508,"sku":null,"price":236.23,"currency_code":"GBP","in_stock":true},{"title":"6m x 8m","offer_id":57663844221276,"sku":null,"price":269.98,"currency_code":"GBP","in_stock":true},{"title":"6m x 9m","offer_id":57663844254044,"sku":null,"price":303.73,"currency_code":"GBP","in_stock":true},{"title":"6m x 10m","offer_id":57663844286812,"sku":null,"price":337.48,"currency_code":"GBP","in_stock":true},{"title":"7m x 7m","offer_id":57663844319580,"sku":null,"price":277.48,"currency_code":"GBP","in_stock":true},{"title":"7m x 8m","offer_id":57663844352348,"sku":null,"price":314.98,"currency_code":"GBP","in_stock":true},{"title":"7m x 9m","offer_id":57663844385116,"sku":null,"price":352.48,"currency_code":"GBP","in_stock":true},{"title":"7m x 10m","offer_id":57663844417884,"sku":null,"price":391.23,"currency_code":"GBP","in_stock":true},{"title":"8m x 8m","offer_id":57663844450652,"sku":null,"price":358.73,"currency_code":"GBP","in_stock":true},{"title":"8m x 9m","offer_id":57663844483420,"sku":null,"price":403.23,"currency_code":"GBP","in_stock":true},{"title":"8m x 10m","offer_id":57663844516188,"sku":null,"price":447.73,"currency_code":"GBP","in_stock":true},{"title":"9m x 9m","offer_id":57663844548956,"sku":null,"price":447.73,"currency_code":"GBP","in_stock":true},{"title":"9m x 10m","offer_id":57663844581724,"sku":null,"price":497.48,"currency_code":"GBP","in_stock":true},{"title":"10m x 10m","offer_id":57663844614492,"sku":null,"price":549.98,"currency_code":"GBP","in_stock":true},{"title":"3.5m x 4.5m","offer_id":57663844647260,"sku":null,"price":84.98,"currency_code":"GBP","in_stock":true},{"title":"3.5m x 5.5m","offer_id":57663844680028,"sku":null,"price":103.73,"currency_code":"GBP","in_stock":true},{"title":"3.5m x 6.5m","offer_id":57663844712796,"sku":null,"price":122.48,"currency_code":"GBP","in_stock":true},{"title":"4.5m x 5.5m","offer_id":57663844745564,"sku":null,"price":134.98,"currency_code":"GBP","in_stock":true},{"title":"4.5m x 6.5m","offer_id":57663844778332,"sku":null,"price":157.48,"currency_code":"GBP","in_stock":true},{"title":"4.5m x 7.5m","offer_id":57663844811100,"sku":null,"price":182.48,"currency_code":"GBP","in_stock":true},{"title":"5.5m x 6.5m","offer_id":57663844843868,"sku":null,"price":202.48,"currency_code":"GBP","in_stock":true},{"title":"5.5m x 7.5m","offer_id":57663844876636,"sku":null,"price":233.73,"currency_code":"GBP","in_stock":true},{"title":"5.5m x 8.5m","offer_id":57663844909404,"sku":null,"price":264.98,"currency_code":"GBP","in_stock":true},{"title":"5.5m x 9.5m","offer_id":57663844942172,"sku":null,"price":297.48,"currency_code":"GBP","in_stock":true},{"title":"6.5m x 7.5m","offer_id":57663844974940,"sku":null,"price":276.23,"currency_code":"GBP","in_stock":true},{"title":"6.5m x 8.5m","offer_id":57663845007708,"sku":null,"price":312.48,"currency_code":"GBP","in_stock":true},{"title":"6.5m x 9.5m","offer_id":57663845040476,"sku":null,"price":348.73,"currency_code":"GBP","in_stock":true},{"title":"6.5m x 10.5m","offer_id":57663845073244,"sku":null,"price":383.73,"currency_code":"GBP","in_stock":true},{"title":"7.5m x 8.5m","offer_id":57663845106012,"sku":null,"price":359.98,"currency_code":"GBP","in_stock":true},{"title":"7.5m x 9.5m","offer_id":57663845138780,"sku":null,"price":402.48,"currency_code":"GBP","in_stock":true},{"title":"7.5m x 10.5m","offer_id":57663845171548,"sku":null,"price":444.98,"currency_code":"GBP","in_stock":true},{"title":"8.5m x 9.5m","offer_id":57663845204316,"sku":null,"price":454.98,"currency_code":"GBP","in_stock":true},{"title":"8.5m x 10.5m","offer_id":57663845237084,"sku":null,"price":502.48,"currency_code":"GBP","in_stock":true},{"title":"9.5m x 10.5m","offer_id":57663845269852,"sku":null,"price":562.48,"currency_code":"GBP","in_stock":true},{"title":"10m x 11m","offer_id":57663845302620,"sku":null,"price":607.48,"currency_code":"GBP","in_stock":true},{"title":"10m x 12m","offer_id":57663845335388,"sku":null,"price":664.98,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0889\/2035\/9260\/files\/f7d43acc26c389fdc1e593afc60437d9.jpg?v=1779039845"},{"product_id":"budget-ldpe-pond-liner-uk-flexible-tear-proof-15-25-40-year-guarantee","title":"Budget LDPE Pond Liner UK | Flexible \u0026 Tear-Proof | 15, 25 \u0026 40 Year Guarantee","description":"\u003ch2\u003eBudget LDPE Pond Liner UK | Flexible \u0026amp; Tear-Proof | 15, 25 \u0026amp; 40 Year Guarantee — UK's Leading Pond Liner Specialist | Fish Safe | Free Delivery\u003c\/h2\u003e\n\u003cp\u003eDiscover our premium quality \u003cstrong\u003eBudget LDPE Pond Liner UK | Flexible \u0026amp; Tear-Proof | 15, 25 \u0026amp; 40 Year Guarantee\u003c\/strong\u003e — trusted by thousands of UK pond builders, garden designers, and koi enthusiasts. Every product in our range is selected for its reliability, fish-safe certification, and long-term performance in UK weather conditions.\u003c\/p\u003e\n\u003cp\u003eWe are one of the UK's leading specialist pond liner suppliers, with an extensive range covering all liner types, sizes, and applications — from small wildlife garden ponds to large commercial water features. Our expert team is on hand to help you choose the right product and size for your specific project.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFish Safe\u003c\/td\u003e\n\u003ctd\u003e✅ Yes — certified safe for all aquatic life\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV Resistance\u003c\/td\u003e\n\u003ctd\u003eExcellent — UV stabilised\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003eSuitable for all UK climate conditions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlexibility\u003c\/td\u003e\n\u003ctd\u003eGood — suitable for various pond shapes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelivery\u003c\/td\u003e\n\u003ctd\u003eFree UK mainland delivery included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003e5 Key Use Cases\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e🌿 \u003cstrong\u003eWildlife Garden Ponds\u003c\/strong\u003e — Creating habitats for frogs, newts, dragonflies, and garden birds\u003c\/li\u003e\n\u003cli\u003e🐟 \u003cstrong\u003eOrnamental Fish Ponds\u003c\/strong\u003e — Safe for goldfish, koi, and all freshwater pond species\u003c\/li\u003e\n\u003cli\u003e💧 \u003cstrong\u003eWater Features\u003c\/strong\u003e — Streams, waterfalls, and decorative water garden features\u003c\/li\u003e\n\u003cli\u003e🌸 \u003cstrong\u003eFormal Garden Ponds\u003c\/strong\u003e — Classic and contemporary formal water garden designs\u003c\/li\u003e\n\u003cli\u003e🌊 \u003cstrong\u003eBog Gardens\u003c\/strong\u003e — Shallow waterlogged planting areas for marginal and bog plants\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eStep-by-Step Installation Overview\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlan and excavate\u003c\/strong\u003e — Mark pond outline, excavate to required depth, remove all sharp debris\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall underlay\u003c\/strong\u003e — Lay 200gsm geotextile underlay across all surfaces before liner\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition liner\u003c\/strong\u003e — Centre liner over pond, warm in sunlight for flexibility, drape into shape\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm and secure\u003c\/strong\u003e — Press into contours, create pleats at corners, work from centre outward\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFill and finish\u003c\/strong\u003e — Fill pond slowly with water, secure liner edges, add plants and fish\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e✅ Trust \u0026amp; Guarantee\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e✅ Fish Safe Certified — Safe for all fish species and aquatic life\u003c\/li\u003e\n\u003cli\u003e✅ Free UK Delivery — All mainland UK orders delivered free\u003c\/li\u003e\n\u003cli\u003e✅ Long Guarantee — Manufacturer warranty on material integrity\u003c\/li\u003e\n\u003cli\u003e✅ Expert Advice Available — Speak to our pond specialists for free sizing advice\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I calculate what size I need?\u003c\/strong\u003e\u003cbr\u003eA: Add twice the maximum depth to both length and width of your pond, plus 0.6m on each dimension for edge overlap. When in doubt, always order the next size up — a larger liner is far better than a small one.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need a specialist to install a pond liner?\u003c\/strong\u003e\u003cbr\u003eA: Most pond liners can be installed by a competent DIY enthusiast. The key steps are thorough ground preparation, installing underlay before the liner, and filling slowly to allow the liner to settle. Our team is available to advise on any stage of your installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this product safe for fish?\u003c\/strong\u003e\u003cbr\u003eA: All products in our range are fish-safe certified. We never stock pond liner materials that contain harmful plasticisers or leachable compounds.\u003c\/p\u003e","brand":"PondLiners Co","offers":[{"title":"2x2m \/ 15 Year","offer_id":57665403257180,"sku":null,"price":19.99,"currency_code":"GBP","in_stock":true},{"title":"2x2m \/ 25 Year","offer_id":57665403289948,"sku":null,"price":24.99,"currency_code":"GBP","in_stock":true},{"title":"2x2m \/ 40 Year","offer_id":57665403322716,"sku":null,"price":29.99,"currency_code":"GBP","in_stock":true},{"title":"3x3m \/ 15 Year","offer_id":57665403355484,"sku":null,"price":44.99,"currency_code":"GBP","in_stock":true},{"title":"3x3m \/ 25 Year","offer_id":57665403388252,"sku":null,"price":56.99,"currency_code":"GBP","in_stock":true},{"title":"3x3m \/ 40 Year","offer_id":57665403421020,"sku":null,"price":67.99,"currency_code":"GBP","in_stock":true},{"title":"4x3m \/ 15 Year","offer_id":57665403453788,"sku":null,"price":59.99,"currency_code":"GBP","in_stock":true},{"title":"4x3m \/ 25 Year","offer_id":57665403486556,"sku":null,"price":74.99,"currency_code":"GBP","in_stock":true},{"title":"4x3m \/ 40 Year","offer_id":57665403519324,"sku":null,"price":89.99,"currency_code":"GBP","in_stock":true},{"title":"4x4m \/ 15 Year","offer_id":57665403552092,"sku":null,"price":79.99,"currency_code":"GBP","in_stock":true},{"title":"4x4m \/ 25 Year","offer_id":57665403584860,"sku":null,"price":99.99,"currency_code":"GBP","in_stock":true},{"title":"4x4m \/ 40 Year","offer_id":57665403617628,"sku":null,"price":119.99,"currency_code":"GBP","in_stock":true},{"title":"5x4m \/ 15 Year","offer_id":57665403650396,"sku":null,"price":99.99,"currency_code":"GBP","in_stock":true},{"title":"5x4m \/ 25 Year","offer_id":57665403683164,"sku":null,"price":124.99,"currency_code":"GBP","in_stock":true},{"title":"5x4m \/ 40 Year","offer_id":57665403715932,"sku":null,"price":149.99,"currency_code":"GBP","in_stock":true},{"title":"5x5m \/ 15 Year","offer_id":57665403748700,"sku":null,"price":124.99,"currency_code":"GBP","in_stock":true},{"title":"5x5m \/ 25 Year","offer_id":57665403781468,"sku":null,"price":155.99,"currency_code":"GBP","in_stock":true},{"title":"5x5m \/ 40 Year","offer_id":57665403814236,"sku":null,"price":186.99,"currency_code":"GBP","in_stock":true},{"title":"6x4m \/ 15 Year","offer_id":57665403847004,"sku":null,"price":119.99,"currency_code":"GBP","in_stock":true},{"title":"6x4m \/ 25 Year","offer_id":57665403879772,"sku":null,"price":149.99,"currency_code":"GBP","in_stock":true},{"title":"6x4m \/ 40 Year","offer_id":57665403912540,"sku":null,"price":179.99,"currency_code":"GBP","in_stock":true},{"title":"6x5m \/ 15 Year","offer_id":57665403945308,"sku":null,"price":149.99,"currency_code":"GBP","in_stock":true},{"title":"6x5m \/ 25 Year","offer_id":57665403978076,"sku":null,"price":186.99,"currency_code":"GBP","in_stock":true},{"title":"6x5m \/ 40 Year","offer_id":57665404010844,"sku":null,"price":224.99,"currency_code":"GBP","in_stock":true},{"title":"6x6m \/ 15 Year","offer_id":57665404043612,"sku":null,"price":179.99,"currency_code":"GBP","in_stock":true},{"title":"6x6m \/ 25 Year","offer_id":57665404076380,"sku":null,"price":224.99,"currency_code":"GBP","in_stock":true},{"title":"6x6m \/ 40 Year","offer_id":57665404109148,"sku":null,"price":269.99,"currency_code":"GBP","in_stock":true},{"title":"7x5m \/ 15 Year","offer_id":57665404141916,"sku":null,"price":174.99,"currency_code":"GBP","in_stock":true},{"title":"7x5m \/ 25 Year","offer_id":57665404174684,"sku":null,"price":217.99,"currency_code":"GBP","in_stock":true},{"title":"7x5m \/ 40 Year","offer_id":57665404207452,"sku":null,"price":261.99,"currency_code":"GBP","in_stock":true},{"title":"7x6m \/ 15 Year","offer_id":57665404240220,"sku":null,"price":208.99,"currency_code":"GBP","in_stock":true},{"title":"7x6m \/ 25 Year","offer_id":57665404272988,"sku":null,"price":261.99,"currency_code":"GBP","in_stock":true},{"title":"7x6m \/ 40 Year","offer_id":57665404305756,"sku":null,"price":313.99,"currency_code":"GBP","in_stock":true},{"title":"8x6m \/ 15 Year","offer_id":57665404338524,"sku":null,"price":238.99,"currency_code":"GBP","in_stock":true},{"title":"8x6m \/ 25 Year","offer_id":57665404371292,"sku":null,"price":298.99,"currency_code":"GBP","in_stock":true},{"title":"8x6m \/ 40 Year","offer_id":57665404404060,"sku":null,"price":358.99,"currency_code":"GBP","in_stock":true},{"title":"10x8m \/ 15 Year","offer_id":57665404436828,"sku":null,"price":397.99,"currency_code":"GBP","in_stock":true},{"title":"10x8m \/ 25 Year","offer_id":57665404469596,"sku":null,"price":497.99,"currency_code":"GBP","in_stock":true},{"title":"10x8m \/ 40 Year","offer_id":57665404502364,"sku":null,"price":597.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0889\/2035\/9260\/files\/5205f711add9b71947bda6d0b61ef688.jpg?v=1779039503"},{"product_id":"wildlife-pond-starter-kit-uk-ldpe-liner-underlay-pond-sealer-all-in-one","title":"Wildlife Pond Starter Kit UK | LDPE Liner + Underlay + Pond Sealer | All-in-One","description":"\u003ch2\u003ePond Liner Underlay 200gsm UK — Heavy Duty Geotextile | Essential Protection | All Liner Types\u003c\/h2\u003e\n\u003cp\u003eThe single most important accessory for any pond liner installation — our \u003cstrong\u003e200gsm Heavy Duty Geotextile Pond Liner Underlay\u003c\/strong\u003e is the protective foundation that keeps your pond liner in perfect condition for decades. Professional pond builders consider underlay non-negotiable: a pond liner without underlay is a pond liner waiting to fail.\u003c\/p\u003e\n\u003cp\u003eOur geotextile underlay is a heavy-duty 200gsm needle-punched polypropylene fabric — the same professional specification used in commercial reservoir lining, landscape drainage, and civil engineering projects. It acts as a cushion between the ground and your pond liner, absorbing the shock of stones, roots, and ground movement that would otherwise puncture or stress your investment over time.\u003c\/p\u003e\n\u003ch3\u003eFull Technical Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eNeedle-punched polypropylene geotextile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e200gsm (grams per square metre)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003eApproximately 2mm uncompressed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-30°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV Resistance\u003c\/td\u003e\n\u003ctd\u003eGood (protected by liner once installed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFish Safe\u003c\/td\u003e\n\u003ctd\u003e✅ Yes — inert polypropylene, non-toxic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuarantee\u003c\/td\u003e\n\u003ctd\u003e20 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eAll pond liner types: EPDM, Butyl, PVC, HDPE, LDPE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Permeability\u003c\/td\u003e\n\u003ctd\u003eHigh — allows drainage, does not trap water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColour\u003c\/td\u003e\n\u003ctd\u003eGrey\/Black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003e5 Reasons Underlay Is Essential\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e🛡️ \u003cstrong\u003eStone Puncture Protection\u003c\/strong\u003e — Even carefully prepared ground contains sharp stones that can work upward through soil movement. Underlay provides a tough buffer preventing these from reaching your liner\u003c\/li\u003e\n\u003cli\u003e🌱 \u003cstrong\u003eRoot Penetration Barrier\u003c\/strong\u003e — Aquatic plant roots can penetrate most liner materials over time. 200gsm geotextile significantly reduces this risk\u003c\/li\u003e\n\u003cli\u003e🌡️ \u003cstrong\u003eThermal Insulation\u003c\/strong\u003e — Provides a layer of insulation beneath the liner, helping maintain more stable water temperatures in winter\u003c\/li\u003e\n\u003cli\u003e⚡ \u003cstrong\u003eGround Movement Cushioning\u003c\/strong\u003e — Soils expand and contract with moisture changes and frost. Underlay absorbs this movement, preventing it from stressing the liner\u003c\/li\u003e\n\u003cli\u003e⏰ \u003cstrong\u003eExtended Liner Life\u003c\/strong\u003e — Pond liners installed with geotextile underlay last significantly longer than those without. The underlay investment pays for itself many times over\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eStep-by-Step Installation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcavate and clean\u003c\/strong\u003e — Dig your pond and remove all large stones, roots, glass, and sharp debris. The cleaner the substrate, the better\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoll out the underlay\u003c\/strong\u003e — Starting from one end, roll the underlay fabric into the excavation and press flat against all surfaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverlap at edges\u003c\/strong\u003e — Allow 30–40cm of underlay to extend beyond the pond edge in all directions, protecting the liner at its most vulnerable point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverlap joins\u003c\/strong\u003e — If multiple pieces are needed, overlap by at least 300mm. No adhesive needed — the liner weight holds all pieces in position\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall liner on top\u003c\/strong\u003e — Your chosen pond liner is installed directly on top of the underlay. The two layers work together to provide optimal protection\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eCompatible With All Pond Liner Types\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e✅ EPDM Pond Liner — all thicknesses\u003c\/li\u003e\n\u003cli\u003e✅ Butyl Rubber Pond Liner — all grades\u003c\/li\u003e\n\u003cli\u003e✅ PVC Pond Liner — all thicknesses\u003c\/li\u003e\n\u003cli\u003e✅ HDPE Pond Liner — all grades\u003c\/li\u003e\n\u003cli\u003e✅ LDPE Pond Liner — all grades\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e✅ Trust \u0026amp; Guarantee\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e✅ Fish Safe Certified — Inert polypropylene, safe for all aquatic life\u003c\/li\u003e\n\u003cli\u003e✅ Free UK Delivery — All mainland UK orders delivered free\u003c\/li\u003e\n\u003cli\u003e✅ 20 Year Guarantee — Long-term fabric warranty\u003c\/li\u003e\n\u003cli\u003e✅ Expert Advice Available — Our team can help calculate the exact quantity needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I really need underlay, or can I use sand instead?\u003c\/strong\u003e\u003cbr\u003eA: Sand is a good supplement but not a replacement for geotextile underlay. Sand can be washed away by water movement during pond filling, leaving voids that create pressure points. Use both sand (50mm base layer) AND geotextile underlay for the best protection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How much underlay do I need?\u003c\/strong\u003e\u003cbr\u003eA: Order the same dimensions as your pond liner. Add 30–40cm on each dimension for edge overlap — or simply order the next size up if you're between sizes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can underlay be used for other applications?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Our 200gsm geotextile is widely used for weed suppression in garden borders, drainage separation layers in decking and paving projects, and erosion control on slopes.\u003c\/p\u003e","brand":"PondLiners Co","offers":[{"title":"3m x 3m","offer_id":57665556349276,"sku":null,"price":70.0,"currency_code":"GBP","in_stock":true},{"title":"4m x 3m","offer_id":57665556382044,"sku":null,"price":88.33,"currency_code":"GBP","in_stock":true},{"title":"5m x 4m","offer_id":57665556414812,"sku":null,"price":137.22,"currency_code":"GBP","in_stock":true},{"title":"6m x 5m","offer_id":57665556447580,"sku":null,"price":198.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0889\/2035\/9260\/files\/9f72e5a48ec0c393fedbf2abf3918539.jpg?v=1779040473"},{"product_id":"budget-pond-liner-kit-uk-ldpe-liner-underlay-best-value-complete-kit","title":"Budget Pond Liner Kit UK | LDPE Liner + Underlay | Best Value Complete Kit","description":"\u003ch2\u003ePond Liner Underlay 200gsm UK — Heavy Duty Geotextile | Essential Protection | All Liner Types\u003c\/h2\u003e\n\u003cp\u003eThe single most important accessory for any pond liner installation — our \u003cstrong\u003e200gsm Heavy Duty Geotextile Pond Liner Underlay\u003c\/strong\u003e is the protective foundation that keeps your pond liner in perfect condition for decades. Professional pond builders consider underlay non-negotiable: a pond liner without underlay is a pond liner waiting to fail.\u003c\/p\u003e\n\u003cp\u003eOur geotextile underlay is a heavy-duty 200gsm needle-punched polypropylene fabric — the same professional specification used in commercial reservoir lining, landscape drainage, and civil engineering projects. It acts as a cushion between the ground and your pond liner, absorbing the shock of stones, roots, and ground movement that would otherwise puncture or stress your investment over time.\u003c\/p\u003e\n\u003ch3\u003eFull Technical Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eNeedle-punched polypropylene geotextile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e200gsm (grams per square metre)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003eApproximately 2mm uncompressed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-30°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV Resistance\u003c\/td\u003e\n\u003ctd\u003eGood (protected by liner once installed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFish Safe\u003c\/td\u003e\n\u003ctd\u003e✅ Yes — inert polypropylene, non-toxic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuarantee\u003c\/td\u003e\n\u003ctd\u003e20 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eAll pond liner types: EPDM, Butyl, PVC, HDPE, LDPE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Permeability\u003c\/td\u003e\n\u003ctd\u003eHigh — allows drainage, does not trap water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColour\u003c\/td\u003e\n\u003ctd\u003eGrey\/Black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003e5 Reasons Underlay Is Essential\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e🛡️ \u003cstrong\u003eStone Puncture Protection\u003c\/strong\u003e — Even carefully prepared ground contains sharp stones that can work upward through soil movement. Underlay provides a tough buffer preventing these from reaching your liner\u003c\/li\u003e\n\u003cli\u003e🌱 \u003cstrong\u003eRoot Penetration Barrier\u003c\/strong\u003e — Aquatic plant roots can penetrate most liner materials over time. 200gsm geotextile significantly reduces this risk\u003c\/li\u003e\n\u003cli\u003e🌡️ \u003cstrong\u003eThermal Insulation\u003c\/strong\u003e — Provides a layer of insulation beneath the liner, helping maintain more stable water temperatures in winter\u003c\/li\u003e\n\u003cli\u003e⚡ \u003cstrong\u003eGround Movement Cushioning\u003c\/strong\u003e — Soils expand and contract with moisture changes and frost. Underlay absorbs this movement, preventing it from stressing the liner\u003c\/li\u003e\n\u003cli\u003e⏰ \u003cstrong\u003eExtended Liner Life\u003c\/strong\u003e — Pond liners installed with geotextile underlay last significantly longer than those without. The underlay investment pays for itself many times over\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eStep-by-Step Installation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcavate and clean\u003c\/strong\u003e — Dig your pond and remove all large stones, roots, glass, and sharp debris. The cleaner the substrate, the better\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoll out the underlay\u003c\/strong\u003e — Starting from one end, roll the underlay fabric into the excavation and press flat against all surfaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverlap at edges\u003c\/strong\u003e — Allow 30–40cm of underlay to extend beyond the pond edge in all directions, protecting the liner at its most vulnerable point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverlap joins\u003c\/strong\u003e — If multiple pieces are needed, overlap by at least 300mm. No adhesive needed — the liner weight holds all pieces in position\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall liner on top\u003c\/strong\u003e — Your chosen pond liner is installed directly on top of the underlay. The two layers work together to provide optimal protection\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eCompatible With All Pond Liner Types\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e✅ EPDM Pond Liner — all thicknesses\u003c\/li\u003e\n\u003cli\u003e✅ Butyl Rubber Pond Liner — all grades\u003c\/li\u003e\n\u003cli\u003e✅ PVC Pond Liner — all thicknesses\u003c\/li\u003e\n\u003cli\u003e✅ HDPE Pond Liner — all grades\u003c\/li\u003e\n\u003cli\u003e✅ LDPE Pond Liner — all grades\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e✅ Trust \u0026amp; Guarantee\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e✅ Fish Safe Certified — Inert polypropylene, safe for all aquatic life\u003c\/li\u003e\n\u003cli\u003e✅ Free UK Delivery — All mainland UK orders delivered free\u003c\/li\u003e\n\u003cli\u003e✅ 20 Year Guarantee — Long-term fabric warranty\u003c\/li\u003e\n\u003cli\u003e✅ Expert Advice Available — Our team can help calculate the exact quantity needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I really need underlay, or can I use sand instead?\u003c\/strong\u003e\u003cbr\u003eA: Sand is a good supplement but not a replacement for geotextile underlay. Sand can be washed away by water movement during pond filling, leaving voids that create pressure points. Use both sand (50mm base layer) AND geotextile underlay for the best protection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How much underlay do I need?\u003c\/strong\u003e\u003cbr\u003eA: Order the same dimensions as your pond liner. Add 30–40cm on each dimension for edge overlap — or simply order the next size up if you're between sizes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can underlay be used for other applications?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Our 200gsm geotextile is widely used for weed suppression in garden borders, drainage separation layers in decking and paving projects, and erosion control on slopes.\u003c\/p\u003e","brand":"PondLiners Co","offers":[{"title":"3x3m","offer_id":57665829568860,"sku":null,"price":46.9,"currency_code":"GBP","in_stock":true},{"title":"4x3m","offer_id":57665829601628,"sku":null,"price":62.53,"currency_code":"GBP","in_stock":true},{"title":"5x4m","offer_id":57665829634396,"sku":null,"price":104.22,"currency_code":"GBP","in_stock":true},{"title":"6x5m","offer_id":57665829667164,"sku":null,"price":156.33,"currency_code":"GBP","in_stock":true},{"title":"6x6m","offer_id":57665829699932,"sku":null,"price":187.6,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0889\/2035\/9260\/files\/fb57e55f3a874139ca547731d6be61e4.jpg?v=1779039518"},{"product_id":"hdpe-pond-liner-uk-0-35mm-uv-resistant-25-year-guarantee-fish-safe","title":"HDPE Pond Liner UK | 0.35mm UV Resistant | 25 Year Guarantee | Fish Safe","description":"\u003cdiv class=\"product-description\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eBuilt to last a lifetime in British gardens\u003c\/strong\u003e, this premium 0.35mm HDPE pond liner delivers professional-grade waterproofing for ponds of all shapes and sizes. Whether you're constructing a koi pond, wildlife pond, or ornamental water feature, this UV-resistant high-density polyethylene membrane provides the reliable, long-term protection your pond deserves — backed by an industry-leading \u003cstrong\u003e25-year UV guarantee\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eMade from 100% virgin HDPE materials, this liner is \u003cstrong\u003ecertified fish safe\u003c\/strong\u003e and free from harmful plasticisers, making it the responsible choice for ponds housing koi, goldfish, or supporting British wildlife. Its 0.35mm thickness strikes the perfect balance between durability and flexibility, allowing it to conform to irregular pond shapes, shelves, and contours with ease during installation.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"width:100%; border-collapse:collapse; font-size:14px;\"\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHDPE (High-Density Polyethylene)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMaterial Grade\u003c\/td\u003e\n\u003ctd\u003e100% Virgin Materials\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e0.35mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eColour\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eUV Resistance\u003c\/td\u003e\n\u003ctd\u003eYes — UV stabilised\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eGuarantee\u003c\/td\u003e\n\u003ctd\u003e25 years against UV damage\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eFish Safe\u003c\/td\u003e\n\u003ctd\u003eYes — non-toxic, aquatically safe\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eStretchability\u003c\/td\u003e\n\u003ctd\u003eNo stretch — maintains shape under pressure\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSuppleness\u003c\/td\u003e\n\u003ctd\u003eVery supple — easy to fold and position\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eApplications\u003c\/td\u003e\n\u003ctd\u003eKoi ponds, wildlife ponds, ornamental ponds, water features\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eUnderlay Required\u003c\/td\u003e\n\u003ctd\u003eRecommended (sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e0.35mm HDPE\u003c\/strong\u003e — industry-standard thickness for flexible pond liners\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e25-Year UV Guarantee\u003c\/strong\u003e — long-term protection against sun degradation\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eFish Safe \u0026amp; Wildlife Safe\u003c\/strong\u003e — 100% non-toxic formulation\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eUV Stabilised\u003c\/strong\u003e — resists fading and brittleness in British weather\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eVery Supple\u003c\/strong\u003e — easily folds around shelves, corners, and contours\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e100% Virgin HDPE\u003c\/strong\u003e — no recycled fillers, consistent quality throughout\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003ePre-cut to size\u003c\/strong\u003e — ready to install straight from the pack\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eFree UK Delivery\u003c\/strong\u003e — delivered to your door\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eIdeal Applications\u003c\/h2\u003e\n\u003cp\u003eThis HDPE liner is suitable for a wide range of pond and water feature projects:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKoi Ponds\u003c\/strong\u003e — safe for koi and ornamental fish; smooth surface won't harbour harmful bacteria\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWildlife Ponds\u003c\/strong\u003e — supports frogs, newts, hedgehogs, and pond life without chemical leaching\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGarden Ponds\u003c\/strong\u003e — suitable for formal and informal pond designs of all shapes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRaised Ponds\u003c\/strong\u003e — can be used with timber, stone or block raised pond structures\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStream \u0026amp; Bog Gardens\u003c\/strong\u003e — flexible enough for watercourse and bog garden applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWater Features\u003c\/strong\u003e — fountains, waterfalls, and decorative water displays\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Tips\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize calculation:\u003c\/strong\u003e Liner size = pond length + (2 × depth) + 0.5m overlap each end. Use our pond liner size guide if unsure.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrepare the ground:\u003c\/strong\u003e Remove all sharp stones, roots, and debris. Use sand or a protective underlay (recommended) to prevent punctures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLay the liner:\u003c\/strong\u003e Drape loosely into the pond on a warm day (HDPE becomes more pliable in warmth). Work from the centre outward, pleating the liner into corners.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFill gradually:\u003c\/strong\u003e Fill with water slowly, easing the liner into position as the weight settles it.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrim and secure:\u003c\/strong\u003e Leave at least 200–300mm overlap around the edge. Trim excess and secure with edging stones or coping.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eWhy Choose Our HDPE Pond Liner?\u003c\/h2\u003e\n\u003cp\u003eWith \u003cstrong\u003eover 4,000 five-star reviews\u003c\/strong\u003e from UK pond builders, this is one of Britain's best-selling pond liners — and for good reason. The combination of UV resistance, fish-safe certification, and the 25-year guarantee makes it an outstanding investment for any pond project. Unlike cheaper PVC alternatives, HDPE doesn't contain plasticisers that can leach into water and harm aquatic life.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e🐟 Fish Safe Certified\u003c\/strong\u003e | \u003cstrong\u003e☀️ UV Resistant\u003c\/strong\u003e | \u003cstrong\u003e📅 25 Year Guarantee\u003c\/strong\u003e | \u003cstrong\u003e🚚 Free UK Delivery\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Pond Liners Co","offers":[{"title":"3m x 2.5m","offer_id":57666513011036,"sku":null,"price":25.42,"currency_code":"GBP","in_stock":true},{"title":"4m x 3m","offer_id":57666513043804,"sku":null,"price":40.67,"currency_code":"GBP","in_stock":true},{"title":"4m x 5m","offer_id":57666513076572,"sku":null,"price":67.78,"currency_code":"GBP","in_stock":true},{"title":"5m x 5m","offer_id":57666513109340,"sku":null,"price":84.72,"currency_code":"GBP","in_stock":true},{"title":"5m x 7m","offer_id":57666513142108,"sku":null,"price":118.62,"currency_code":"GBP","in_stock":true},{"title":"6m x 6m","offer_id":57666513174876,"sku":null,"price":122.0,"currency_code":"GBP","in_stock":true},{"title":"6m x 8m","offer_id":57666513207644,"sku":null,"price":162.67,"currency_code":"GBP","in_stock":true},{"title":"8m x 10m","offer_id":57666513240412,"sku":null,"price":271.12,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0889\/2035\/9260\/files\/7a831f4b720515d0700c27046d16144a.jpg?v=1779039834"},{"product_id":"flexible-ldpe-pond-liner-uk-0-3mm-uv-resistant-koi-wildlife-ponds","title":"Flexible LDPE Pond Liner UK | 0.3mm | UV Resistant | Koi \u0026 Wildlife Ponds","description":"\u003cdiv class=\"product-description\"\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eFlexible LDPE Pond Liner\u003c\/strong\u003e is the go-to choice for UK pond builders who need an easy-to-handle, budget-friendly liner that doesn't compromise on performance. Made from 0.3mm low-density polyethylene, this liner is naturally \u003cstrong\u003emore flexible and lightweight\u003c\/strong\u003e than HDPE alternatives, making it ideal for hobbyists and those installing their first pond. It comes \u003cstrong\u003efish safe certified\u003c\/strong\u003e, UV resistant, and backed by a \u003cstrong\u003e25-year guarantee\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eWhether you're creating a small wildlife pond in a city garden or a larger ornamental koi pond, this LDPE liner adapts effortlessly to your design. The flexible material drapes easily around curves, shelves, and irregular pond shapes, reducing the risk of creases and folds during installation.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"width:100%; border-collapse:collapse; font-size:14px;\"\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eLDPE (Low-Density Polyethylene)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e0.3mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eColour\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eUV Resistance\u003c\/td\u003e\n\u003ctd\u003eYes — UV stabilised\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eGuarantee\u003c\/td\u003e\n\u003ctd\u003e25 years against UV damage\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eFish Safe\u003c\/td\u003e\n\u003ctd\u003eYes — aquatically non-toxic\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eFlexibility\u003c\/td\u003e\n\u003ctd\u003eHigh — drapes easily into pond contours\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCut-to-size\u003c\/td\u003e\n\u003ctd\u003eEasy to trim with scissors or knife\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSuitable For\u003c\/td\u003e\n\u003ctd\u003eKoi ponds, wildlife ponds, ornamental water features\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e0.3mm LDPE\u003c\/strong\u003e — highly flexible, easy to position and install\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e25-Year UV Guarantee\u003c\/strong\u003e — resists sun damage in all British weather\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eFish \u0026amp; Wildlife Safe\u003c\/strong\u003e — certified non-toxic formulation\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eEasy to Cut\u003c\/strong\u003e — trims cleanly with standard scissors or a utility knife\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eMultiple Sizes\u003c\/strong\u003e — from small 2x2m up to large 6x5m sheets\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eLightweight\u003c\/strong\u003e — easier to transport and handle than heavier rubber liners\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eFree UK Delivery\u003c\/strong\u003e — fast dispatch to your door\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eIdeal Applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWildlife Ponds\u003c\/strong\u003e — safe for frogs, newts, toads, hedgehogs, and birds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKoi \u0026amp; Goldfish Ponds\u003c\/strong\u003e — non-toxic surface safe for ornamental fish\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBeginner Pond Builds\u003c\/strong\u003e — easy to work with, forgiving during installation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInformal Garden Ponds\u003c\/strong\u003e — adapts to any organic, free-form shape\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBog Gardens\u003c\/strong\u003e — retains moisture for marginal pond plants\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePond Repairs\u003c\/strong\u003e — can be used as patching material over existing liners\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eLDPE vs HDPE — Which Should I Choose?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eLDPE (this liner)\u003c\/strong\u003e is more flexible and easier to handle, making it excellent for complex shapes and first-time builders. It's slightly thinner than HDPE at 0.3mm but still durable enough for long-term use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHDPE\u003c\/strong\u003e is denser and more puncture-resistant, better suited to larger ponds or areas with aggressive root systems. Both materials are fish safe and UV resistant.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasure:\u003c\/strong\u003e Length + (2 × max depth) + 0.6m × Width + (2 × max depth) + 0.6m\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrepare:\u003c\/strong\u003e Remove sharp stones and roots. Sand base recommended. Protective underlay advised.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarm the liner:\u003c\/strong\u003e On a sunny day, LDPE becomes even more pliable — ideal for installation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrape and fold:\u003c\/strong\u003e Work from the centre out, neatly folding liner into corners and shelves.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFill slowly:\u003c\/strong\u003e Add water gradually — the weight helps settle the liner into position.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecure edges:\u003c\/strong\u003e Trim with 200–300mm overlap and secure under coping stones or soil.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eWith Over 1,400 Five-Star Reviews\u003c\/h2\u003e\n\u003cp\u003eThis LDPE liner is one of the UK's most popular pond membranes — trusted by hobbyist pond builders, garden landscapers, and wildlife garden enthusiasts across Britain. The combination of easy handling, UV stability, fish-safe formulation, and long guarantee makes it exceptional value for money.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e🐟 Fish Safe\u003c\/strong\u003e | \u003cstrong\u003e☀️ UV Resistant\u003c\/strong\u003e | \u003cstrong\u003e📅 25 Year Guarantee\u003c\/strong\u003e | \u003cstrong\u003e✂️ Easy to Cut\u003c\/strong\u003e | \u003cstrong\u003e🚚 Free UK Delivery\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Pond Liners Co","offers":[{"title":"2m x 2m","offer_id":57666515239260,"sku":null,"price":19.33,"currency_code":"GBP","in_stock":true},{"title":"3m x 3m","offer_id":57666515272028,"sku":null,"price":43.48,"currency_code":"GBP","in_stock":true},{"title":"4m x 3m","offer_id":57666515304796,"sku":null,"price":57.98,"currency_code":"GBP","in_stock":true},{"title":"4m x 4m","offer_id":57666515337564,"sku":null,"price":77.31,"currency_code":"GBP","in_stock":true},{"title":"6m x 5m","offer_id":57666515370332,"sku":null,"price":144.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0889\/2035\/9260\/files\/63bf30658288b7abc1d5dc5429c783e4.jpg?v=1779039725"},{"product_id":"fish-safe-pond-sealant-uk-ms-polymer-repairs-leaks-underwater-24hr-cure","title":"Fish Safe Pond Sealant UK | MS Polymer | Repairs Leaks Underwater | 24hr Cure","description":"\u003cdiv class=\"product-description\"\u003e\n\n\u003cp\u003eStop pond leaks permanently with this \u003cstrong\u003eprofessional-grade MS Polymer Pond Sealant\u003c\/strong\u003e — specifically formulated for aquatic environments and rated \u003cstrong\u003e4× stronger than standard aquarium silicone\u003c\/strong\u003e. Whether you're sealing a concrete pond, repairing a crack in a stone or render surface, or bonding pond equipment, this MS300 polymer adhesive sealant delivers an \u003cstrong\u003eindustrial-strength waterproof bond\u003c\/strong\u003e in just 24 hours — and it works even in wet conditions.\u003c\/p\u003e\n\n\u003cp\u003eUnlike standard silicone sealants that degrade rapidly in submerged environments, this \u003cstrong\u003ehybrid MS polymer\u003c\/strong\u003e formula is specifically engineered for permanent underwater use. It's certified \u003cstrong\u003efish safe\u003c\/strong\u003e — safe for koi, goldfish, and all pond life once fully cured — making it the professional choice for pond repairs in the UK.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"width:100%; border-collapse:collapse; font-size:14px;\"\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eMS300 MS Polymer Adhesive Sealant\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e300ml cartridge\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e495g\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eColour\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCure Time\u003c\/td\u003e\n\u003ctd\u003eSkins in ~1 hour, full cure in 24 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eWet or dry conditions — works underwater\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBond Strength\u003c\/td\u003e\n\u003ctd\u003e4× stronger than aquarium silicone\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eFish Safe\u003c\/td\u003e\n\u003ctd\u003eYes — when fully cured\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSolvent Free\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePaintable\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWeatherproof\u003c\/td\u003e\n\u003ctd\u003eYes — all-weather performance\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eGuarantee\u003c\/td\u003e\n\u003ctd\u003e2 years\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSuitable Surfaces\u003c\/td\u003e\n\u003ctd\u003eConcrete, glass, metal, stone, ceramic, GRP, UPVC, fibreglass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e4× stronger than silicone\u003c\/strong\u003e — MS polymer chemistry outperforms standard aquarium sealants\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eWorks underwater\u003c\/strong\u003e — can be applied to wet surfaces and even underwater\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e24-hour full cure\u003c\/strong\u003e — fast turnaround for urgent pond repairs\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eFish Safe once cured\u003c\/strong\u003e — certified safe for koi, goldfish, and all pond life\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eSolvent-free formula\u003c\/strong\u003e — no harsh chemicals that could harm aquatic life\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eFlexible when cured\u003c\/strong\u003e — won't crack or shrink with temperature changes\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003ePaintable\u003c\/strong\u003e — paint over once cured for a seamless finish\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eMarine grade\u003c\/strong\u003e — engineered for permanent immersion in water\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eFree UK Delivery\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eIdeal Applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLeaking concrete ponds\u003c\/strong\u003e — seal hairline cracks and larger fractures permanently\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStone and render ponds\u003c\/strong\u003e — bonds to natural stone, pointing mortar, and render\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFibreglass \/ GRP ponds\u003c\/strong\u003e — seals delamination and cracks in fibreglass pond shells\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePond edging and coping\u003c\/strong\u003e — waterproof bond for capstones, tiles, and edging\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAquarium repairs\u003c\/strong\u003e — stronger alternative to traditional aquarium silicone\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFountains and water features\u003c\/strong\u003e — seals around fittings, pipes, and edges\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePond equipment\u003c\/strong\u003e — bonds pond skimmers, bottom drains, and return fittings to liner\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean the surface:\u003c\/strong\u003e Remove all algae, loose material, and debris. The surface can be damp but should be free of standing water where possible.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLoad cartridge:\u003c\/strong\u003e Insert into a standard mastic gun. Cut nozzle to desired bead size.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApply sealant:\u003c\/strong\u003e Apply a continuous bead over the crack or joint. Tool smooth with a wet finger or spatula.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAllow to cure:\u003c\/strong\u003e Skins in approximately 1 hour. Full waterproof cure achieved in 24 hours.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRefill pond:\u003c\/strong\u003e Once fully cured (24 hours), it is safe to refill with fish present.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eWhy MS Polymer Beats Silicone for Pond Repairs\u003c\/h2\u003e\n\u003cp\u003eStandard silicone sealants — even \"aquarium grade\" products — can degrade over time when permanently submerged, losing adhesion and allowing water to bypass the seal. \u003cstrong\u003eMS polymer chemistry\u003c\/strong\u003e forms a permanent cross-linked bond that doesn't degrade underwater, making it the professional choice for lasting pond repairs. With \u003cstrong\u003eover 333 UK customer reviews\u003c\/strong\u003e and a 2-year guarantee, this is the pond sealant British pond owners trust.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e🐟 Fish Safe\u003c\/strong\u003e | \u003cstrong\u003e💧 Works Underwater\u003c\/strong\u003e | \u003cstrong\u003e⏱️ 24hr Cure\u003c\/strong\u003e | \u003cstrong\u003e💪 4× Stronger than Silicone\u003c\/strong\u003e | \u003cstrong\u003e🚚 Free UK Delivery\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Pond Liners Co","offers":[{"title":"300ml Cartridge","offer_id":57666516058460,"sku":null,"price":31.98,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0889\/2035\/9260\/files\/56c8670aad79a860894bfd8aa60a42c8.jpg?v=1779039714"},{"product_id":"butyl-pond-liner-joining-tape-uk-double-sided-50mm-x-1m-waterproof-repair","title":"Butyl Pond Liner Joining Tape UK | Double Sided | 50mm x 1m | Waterproof Repair","description":"\u003cdiv class=\"product-description\"\u003e\n\n\u003cp\u003eCreate \u003cstrong\u003epermanent, watertight joints\u003c\/strong\u003e in pond liners and waterproofing membranes with this professional-grade \u003cstrong\u003eDouble-Sided Butyl Joining Tape\u003c\/strong\u003e. Manufactured from natural butyl rubber — the same material used in premium EPDM and butyl pond liners — this self-adhesive tape forms an instant, waterproof bond without the need for solvents, primers, or specialist equipment.\u003c\/p\u003e\n\n\u003cp\u003eWhether you're joining two sections of pond liner to cover a large area, repairing a damaged membrane, or hemming liner edges for a neat finish, this butyl tape provides a reliable, long-lasting solution trusted by pond builders, landscapers, and waterproofing professionals across the UK.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"width:100%; border-collapse:collapse; font-size:14px;\"\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eDouble-sided butyl rubber tape\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e50mm wide × 1.5mm thick × available per metre\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eColour\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eMembrane jointing, pond liner repair, waterproofing\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBond Type\u003c\/td\u003e\n\u003ctd\u003ePressure-sensitive self-adhesive — both sides\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWaterproof\u003c\/td\u003e\n\u003ctd\u003eYes — permanently waterproof bond\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCompatible With\u003c\/td\u003e\n\u003ctd\u003eButyl, EPDM, HDPE, LDPE, PVC pond liners and waterproofing membranes\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eUV Resistance\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-40°C to +100°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eApplication Temperature\u003c\/td\u003e\n\u003ctd\u003eBest applied above 5°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eDouble-sided butyl rubber\u003c\/strong\u003e — bonds to both liner surfaces simultaneously for maximum strength\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eInstant waterproof seal\u003c\/strong\u003e — no curing time required; waterproof as soon as pressure is applied\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e50mm wide\u003c\/strong\u003e — wide enough to create a reliable overlap joint\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eFlexible and conformable\u003c\/strong\u003e — follows the contours of your pond liner without bridging\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eCompatible with all major liner types\u003c\/strong\u003e — butyl, EPDM, HDPE, LDPE, PVC membranes\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eUV resistant\u003c\/strong\u003e — won't degrade when exposed to sunlight\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eNo tools required\u003c\/strong\u003e — peel, press, and bond\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eProfessional grade\u003c\/strong\u003e — used by landscapers and waterproofing contractors\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eFree UK Delivery\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eIdeal Applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePond liner jointing\u003c\/strong\u003e — bond two liner sheets together to cover large or irregular ponds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePond liner repair\u003c\/strong\u003e — seal punctures, tears, and holes in butyl, EPDM, and HDPE liners\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEdge hemming\u003c\/strong\u003e — fold and seal liner edges for a neat, professional finish\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWaterproofing joints\u003c\/strong\u003e — seal overlapping sections of damp-proof membranes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRoof waterproofing\u003c\/strong\u003e — suitable for EPDM flat roof membrane jointing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnder-deck membranes\u003c\/strong\u003e — seal decking and terrace waterproofing membranes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use Butyl Joining Tape\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean the surfaces:\u003c\/strong\u003e Both liner surfaces must be dry, clean, and free of dirt, algae, and debris. Use isopropyl alcohol to clean if necessary.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMark your overlap:\u003c\/strong\u003e Ensure a minimum 50–75mm overlap between the two liner sections.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePeel and position:\u003c\/strong\u003e Remove the release paper from one side of the tape. Position carefully on the first liner section and press firmly into place.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBond the second layer:\u003c\/strong\u003e Remove the remaining release paper and carefully bring the second liner section down onto the tape. Avoid trapping air bubbles.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApply pressure:\u003c\/strong\u003e Use a roller or flat tool to apply firm, even pressure along the entire joint length to maximise bond strength.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAllow to settle:\u003c\/strong\u003e For best results, allow 30 minutes before filling\/testing the joint.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003ePro Tip: Cold Weather Application\u003c\/h2\u003e\n\u003cp\u003eFor best results in cool British weather (below 10°C), warm the tape slightly with a heat gun before application — this softens the butyl compound and significantly improves tack and bond quality. Always apply to clean, dry surfaces for a permanent watertight joint.\u003c\/p\u003e\n\n\u003cp\u003eTrusted by UK pond builders and landscapers with \u003cstrong\u003e295+ five-star reviews\u003c\/strong\u003e, this butyl joining tape is the professional choice for reliable, long-lasting pond liner joints and repairs.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e💧 Permanently Waterproof\u003c\/strong\u003e | \u003cstrong\u003e🔄 Double-Sided\u003c\/strong\u003e | \u003cstrong\u003e🏗️ Professional Grade\u003c\/strong\u003e | \u003cstrong\u003e☀️ UV Resistant\u003c\/strong\u003e | \u003cstrong\u003e🚚 Free UK Delivery\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Pond Liners Co","offers":[{"title":"50mm x 1m Roll","offer_id":57666518122844,"sku":null,"price":28.1,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0889\/2035\/9260\/files\/6f15276fefafe6c47a49071a8499b939.jpg?v=1779039534"}],"url":"https:\/\/www.pondlinersco.co.uk\/collections\/hdpe-pond-liners.oembed","provider":"PondLinersco.co.uk","version":"1.0","type":"link"}