{"title":"EPDM Pond Liners UK | Fish Safe EPDM-45 | 25 Year Guarantee","description":"\u003ch2\u003eEPDM Pond Liners UK — The Expert Buyer's Guide\u003c\/h2\u003e\n\n\u003cp\u003eEPDM (ethylene propylene diene monomer) rubber pond liner is the most widely specified pond liner for garden ponds, wildlife ponds, koi ponds, and ecological habitat creation in the UK. Its combination of flexibility, fish-safe certification, UV resistance, and 25-year guarantee makes it the benchmark against which all other liner types are measured.\u003c\/p\u003e\n\n\u003ch2\u003eWhy EPDM Is the UK's Most Popular Pond Liner\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFish-safe certification:\u003c\/strong\u003e Our EPDM is manufactured to EPDM-45 grade — the international standard for pond liner that is safe for fish, amphibians, and all UK aquatic invertebrates\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExceptional flexibility:\u003c\/strong\u003e Elongation at break 300–450% — EPDM conforms effortlessly to irregular pond shapes, natural contours, and complex marginal profiles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e25-year manufacturer's guarantee:\u003c\/strong\u003e Backed by the world's leading EPDM manufacturers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUV resistant by chemistry:\u003c\/strong\u003e EPDM's saturated polymer backbone is inherently resistant to UV degradation — no surface coating or treatment needed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e -40°C to +120°C continuous service — performs in all UK weather conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow maintenance:\u003c\/strong\u003e EPDM requires no special treatment or annual inspection beyond a visual check\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eEPDM vs Other Pond Liner Types\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eEPDM 0.75mm\u003c\/th\u003e\n\u003cth\u003ePVC 0.50mm\u003c\/th\u003e\n\u003cth\u003eLDPE 0.35mm\u003c\/th\u003e\n\u003cth\u003eHDPE 0.75mm\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuarantee\u003c\/td\u003e\n\u003ctd\u003e25 years\u003c\/td\u003e\n\u003ctd\u003e15 years\u003c\/td\u003e\n\u003ctd\u003e15 years\u003c\/td\u003e\n\u003ctd\u003e40+ years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFish safe\u003c\/td\u003e\n\u003ctd\u003e✅ Certified\u003c\/td\u003e\n\u003ctd\u003e✅\u003c\/td\u003e\n\u003ctd\u003e✅\u003c\/td\u003e\n\u003ctd\u003e✅\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlexibility\u003c\/td\u003e\n\u003ctd\u003eVery high\u003c\/td\u003e\n\u003ctd\u003eMedium\u003c\/td\u003e\n\u003ctd\u003eMedium\u003c\/td\u003e\n\u003ctd\u003eLow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV resistance\u003c\/td\u003e\n\u003ctd\u003eExcellent (inherent)\u003c\/td\u003e\n\u003ctd\u003ePoor (degrades)\u003c\/td\u003e\n\u003ctd\u003eFair\u003c\/td\u003e\n\u003ctd\u003eExcellent (carbon black)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCold weather\u003c\/td\u003e\n\u003ctd\u003eFlexible to -40°C\u003c\/td\u003e\n\u003ctd\u003eStiff below 5°C\u003c\/td\u003e\n\u003ctd\u003eFair\u003c\/td\u003e\n\u003ctd\u003eStiff below 0°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrice per m²\u003c\/td\u003e\n\u003ctd\u003e£2.80–4.50\u003c\/td\u003e\n\u003ctd\u003e£1.40–2.20\u003c\/td\u003e\n\u003ctd\u003e£1.10–1.65\u003c\/td\u003e\n\u003ctd\u003e£2.60–4.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest for\u003c\/td\u003e\n\u003ctd\u003eWildlife, koi, garden ponds\u003c\/td\u003e\n\u003ctd\u003eBudget garden ponds\u003c\/td\u003e\n\u003ctd\u003eLow-cost\/temporary\u003c\/td\u003e\n\u003ctd\u003eCommercial, SuDS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhich EPDM Thickness Do You Need?\u003c\/h2\u003e\n\u003ch3\u003e0.75mm EPDM — The Standard Choice\u003c\/h3\u003e\n\u003cp\u003e0.75mm EPDM is the standard UK specification for garden ponds, wildlife ponds, and amenity water features up to 2m depth. It provides the optimal balance of puncture resistance, flexibility, and cost for most garden applications.\u003c\/p\u003e\n\n\u003ch3\u003e1.02mm EPDM — Premium Specification\u003c\/h3\u003e\n\u003cp\u003e1.02mm is recommended for: koi ponds where fish health depends on watertight containment; ponds in rocky subgrades where additional puncture resistance is needed; ponds over 2m depth; and any application where premium performance and long-term confidence are the priority.\u003c\/p\u003e\n\n\u003ch2\u003eHow to Size Your EPDM Pond Liner\u003c\/h2\u003e\n\u003cp\u003eUse the formula: \u003cstrong\u003eLiner length = Pond length + (2 × maximum depth) + 0.6m overlap\u003c\/strong\u003e. Example: A pond 4m long × 3m wide × 0.8m deep needs: length = 4 + 1.6 + 0.6 = 6.2m; width = 3 + 1.6 + 0.6 = 5.2m. We supply custom-cut EPDM to the nearest 0.5m, so you'd order 6.5m × 5.5m.\u003c\/p\u003e\n\n\u003ch2\u003eEPDM Pond Liner Installation — Key Points\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eLay 200 g\/m² geotextile underlay over the prepared subgrade before placing EPDM\u003c\/li\u003e\n\u003cli\u003eUnfold the liner and allow 30 minutes to warm in the sun before fitting — warm EPDM is more pliable\u003c\/li\u003e\n\u003cli\u003eWork in creases gradually from the deepest point outward — do not try to remove all creases before filling\u003c\/li\u003e\n\u003cli\u003eSeam tape: apply to clean, dry surfaces above 5°C; allow 24 hours cure minimum before filling\u003c\/li\u003e\n\u003cli\u003eAnchor edges in a 450–500mm deep trench; backfill with compacted clay\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\": \"Question\", \"name\": \"What is EPDM-45 pond liner?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"EPDM-45 is the internationally recognised grade specification for fish-safe EPDM rubber pond liner. The '-45' designation refers to the compound's EPDM content and confirms it meets the safety standards for use with fish and aquatic life. All our EPDM pond liners are EPDM-45 grade.\"}},{\"@type\": \"Question\", \"name\": \"How long does EPDM pond liner last?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Quality EPDM-45 pond liner carries a 25-year manufacturer's guarantee against material defects. In practice, correctly installed EPDM regularly lasts 30\\u201340 years. EPDM's inherent UV resistance (unlike PVC which relies on plasticisers) means it does not become brittle over time.\"}},{\"@type\": \"Question\", \"name\": \"Can EPDM pond liner be repaired?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes \\u2014 EPDM can be repaired using self-adhesive EPDM repair tape. Clean and dry the damaged area, apply the tape with firm pressure, and allow to cure for 24 hours before refilling. Larger repairs should use a patch cut from spare liner, applied with EPDM seam tape on all edges.\"}},{\"@type\": \"Question\", \"name\": \"Is EPDM fish safe?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes \\u2014 our EPDM is manufactured to EPDM-45 grade, which is certified safe for fish, koi, goldfish, and all UK aquatic species including great crested newts. No special curing or waiting period is needed before introducing fish \\u2014 fill with dechlorinated water and stock immediately.\"}},{\"@type\": \"Question\", \"name\": \"What underlay do I need with EPDM?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"We recommend a minimum 200 g\/m\\u00b2 non-woven geotextile underlay beneath EPDM on all prepared subgrades. On rocky or stony ground, use 300\\u2013400 g\/m\\u00b2. The underlay protects the liner from puncture during installation and from subgrade movement over time.\"}}]}\u003c\/script\u003e\u003cp\u003e\u003ca href=\"\/pages\/get-expert-advice\"\u003eGet free expert advice on choosing your EPDM pond liner →\u003c\/a\u003e\u003c\/p\u003e","products":[{"product_id":"epdm-pond-liner-1-02mm-fish-safe-epdm-45-grade-25-year-guarantee-uk","title":"EPDM Rubber Pond Liner 0.75mm– Flexible Fish Pond Lining Sheet for Garden Ponds, Wildlife Ponds \u0026 Water Features","description":"\u003ch2\u003eEPDM Rubber Pond Liner 0.75mm UK — Fish Safe | Lifetime Guarantee | Free UK Delivery\u003c\/h2\u003e\n\u003cp\u003eWhen it comes to pond liner materials, \u003cstrong\u003eEPDM rubber\u003c\/strong\u003e is the professional's first choice — and our \u003cstrong\u003e0.75mm EPDM Pond Liner\u003c\/strong\u003e is the UK's most popular choice for good reason. Flexible, fish-safe, UV-resistant, and backed by a Lifetime Guarantee, this is the liner trusted by garden designers, pond contractors, and DIY enthusiasts across the United Kingdom.\u003c\/p\u003e\n\u003cp\u003eEPDM (Ethylene Propylene Diene Monomer) is a synthetic rubber engineered specifically for outdoor applications. Unlike PVC liners that can become brittle over time, EPDM remains pliable for decades — maintaining its watertight integrity through the harshest UK winters and hottest summers without cracking, splitting, or degrading.\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\u003eEPDM Rubber (Ethylene Propylene Diene Monomer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e0.75mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-40°C to +80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV Resistance\u003c\/td\u003e\n\u003ctd\u003eExcellent — lifetime stable, no degradation\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 fish species and aquatic life\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuarantee\u003c\/td\u003e\n\u003ctd\u003eLifetime Guarantee on material\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElongation at Break\u003c\/td\u003e\n\u003ctd\u003e300%+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlexibility\u003c\/td\u003e\n\u003ctd\u003eExcellent — drapes and moulds to any pond contour\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColour\u003c\/td\u003e\n\u003ctd\u003eBlack (natural pond appearance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOzone\/Chemical Resistance\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003e5 Use Cases for EPDM 0.75mm Pond Liner\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e🌿 \u003cstrong\u003eWildlife Garden Ponds\u003c\/strong\u003e — Create a thriving habitat for frogs, newts, dragonflies and hedgehogs. EPDM's flexible nature allows for gentle sloping edges that wildlife ponds require\u003c\/li\u003e\n\u003cli\u003e🐟 \u003cstrong\u003eGarden Koi Ponds\u003c\/strong\u003e — Safe for koi and goldfish; suitable for medium-sized koi ponds where 0.75mm provides excellent protection with proper underlay\u003c\/li\u003e\n\u003cli\u003e💧 \u003cstrong\u003eStream Courses and Waterfalls\u003c\/strong\u003e — EPDM's flexibility allows it to be formed around complex stream courses, waterfalls, and cascades without creasing\u003c\/li\u003e\n\u003cli\u003e🌸 \u003cstrong\u003eFormal Ornamental Ponds\u003c\/strong\u003e — Clean black finish creates the reflective appearance preferred in formal garden design\u003c\/li\u003e\n\u003cli\u003e🌊 \u003cstrong\u003eLarge Natural Ponds\u003c\/strong\u003e — Available in large sizes with the ability to seam-weld multiple sheets for very large naturalistic pond designs\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 prepare\u003c\/strong\u003e — Dig your pond to desired shape, incorporating shelf areas at 25–30cm depth for marginal plants. Remove all stones, roots, and sharp debris from all surfaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall underlay\u003c\/strong\u003e — Lay a 200gsm geotextile underlay before the EPDM liner — this is essential to protect the liner from punctures. Press flat against all surfaces with 30cm edge overlap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarm and position the liner\u003c\/strong\u003e — On a warm, sunny day, unfold the EPDM liner and allow it to warm for 30 minutes — warmer EPDM is more pliable and easier to mould. Centre over the pond\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMould to shape\u003c\/strong\u003e — Gently press the liner into the pond contours, creating neat pleats at corners. Work from the centre outward. Do not stretch excessively\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFill and secure\u003c\/strong\u003e — Begin filling with water slowly. As weight builds, the liner will settle perfectly. Trim excess liner, leaving 30cm edge, and secure under coping stones or turf\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eWhy Choose EPDM Over PVC or HDPE?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003evs PVC:\u003c\/strong\u003e EPDM remains flexible indefinitely. PVC can become brittle after years of UV exposure. EPDM has a proven 40+ year lifespan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs HDPE:\u003c\/strong\u003e EPDM is far more flexible and easier to install in irregular pond shapes. EPDM joins can be cold-bonded with tape; HDPE requires heat welding\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs Butyl:\u003c\/strong\u003e EPDM offers similar performance to Butyl at a more accessible price point — making it the top choice for value-conscious pond builders\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 approved safe for all fish species including koi and goldfish\u003c\/li\u003e\n\u003cli\u003e✅ Free UK Delivery — Free delivery to all mainland UK addresses\u003c\/li\u003e\n\u003cli\u003e✅ Lifetime Guarantee — Manufacturer's lifetime guarantee on material integrity\u003c\/li\u003e\n\u003cli\u003e✅ Expert Advice Available — Call our pond specialists for free sizing and installation 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 the liner size I need?\u003c\/strong\u003e\u003cbr\u003eA: Liner Length = Pond Length + (2 × Max Depth) + 0.6m; Liner Width = Pond Width + (2 × Max Depth) + 0.6m. Always round up to the next available size.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can EPDM be repaired if it gets a puncture?\u003c\/strong\u003e\u003cbr\u003eA: Yes. EPDM is one of the easiest liner materials to repair. Small punctures can be patched with EPDM repair tape in under 30 minutes. The pond doesn't need to be fully drained for minor repairs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is EPDM safe for plants as well as fish?\u003c\/strong\u003e\u003cbr\u003eA: Absolutely. EPDM is 100% inert and does not leach any chemicals into the water. 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Flexible, fish-safe, UV-resistant, and backed by a Lifetime Guarantee, this is the liner trusted by garden designers, pond contractors, and DIY enthusiasts across the United Kingdom.\u003c\/p\u003e\n\u003cp\u003eEPDM (Ethylene Propylene Diene Monomer) is a synthetic rubber engineered specifically for outdoor applications. 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Trim excess liner, leaving 30cm edge, and secure under coping stones or turf\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eWhy Choose EPDM Over PVC or HDPE?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003evs PVC:\u003c\/strong\u003e EPDM remains flexible indefinitely. PVC can become brittle after years of UV exposure. EPDM has a proven 40+ year lifespan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs HDPE:\u003c\/strong\u003e EPDM is far more flexible and easier to install in irregular pond shapes. 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Unlike PVC liners that can become brittle over time, EPDM remains pliable for decades — maintaining its watertight integrity through the harshest UK winters and hottest summers without cracking, splitting, or degrading.\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\u003eEPDM Rubber (Ethylene Propylene Diene Monomer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e0.75mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-40°C to +80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV Resistance\u003c\/td\u003e\n\u003ctd\u003eExcellent — lifetime stable, no degradation\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 fish species and aquatic life\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuarantee\u003c\/td\u003e\n\u003ctd\u003eLifetime Guarantee on material\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElongation at Break\u003c\/td\u003e\n\u003ctd\u003e300%+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlexibility\u003c\/td\u003e\n\u003ctd\u003eExcellent — drapes and moulds to any pond contour\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColour\u003c\/td\u003e\n\u003ctd\u003eBlack (natural pond appearance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOzone\/Chemical Resistance\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003e5 Use Cases for EPDM 0.75mm Pond Liner\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e🌿 \u003cstrong\u003eWildlife Garden Ponds\u003c\/strong\u003e — Create a thriving habitat for frogs, newts, dragonflies and hedgehogs. EPDM's flexible nature allows for gentle sloping edges that wildlife ponds require\u003c\/li\u003e\n\u003cli\u003e🐟 \u003cstrong\u003eGarden Koi Ponds\u003c\/strong\u003e — Safe for koi and goldfish; suitable for medium-sized koi ponds where 0.75mm provides excellent protection with proper underlay\u003c\/li\u003e\n\u003cli\u003e💧 \u003cstrong\u003eStream Courses and Waterfalls\u003c\/strong\u003e — EPDM's flexibility allows it to be formed around complex stream courses, waterfalls, and cascades without creasing\u003c\/li\u003e\n\u003cli\u003e🌸 \u003cstrong\u003eFormal Ornamental Ponds\u003c\/strong\u003e — Clean black finish creates the reflective appearance preferred in formal garden design\u003c\/li\u003e\n\u003cli\u003e🌊 \u003cstrong\u003eLarge Natural Ponds\u003c\/strong\u003e — Available in large sizes with the ability to seam-weld multiple sheets for very large naturalistic pond designs\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 prepare\u003c\/strong\u003e — Dig your pond to desired shape, incorporating shelf areas at 25–30cm depth for marginal plants. Remove all stones, roots, and sharp debris from all surfaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall underlay\u003c\/strong\u003e — Lay a 200gsm geotextile underlay before the EPDM liner — this is essential to protect the liner from punctures. Press flat against all surfaces with 30cm edge overlap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarm and position the liner\u003c\/strong\u003e — On a warm, sunny day, unfold the EPDM liner and allow it to warm for 30 minutes — warmer EPDM is more pliable and easier to mould. Centre over the pond\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMould to shape\u003c\/strong\u003e — Gently press the liner into the pond contours, creating neat pleats at corners. Work from the centre outward. Do not stretch excessively\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFill and secure\u003c\/strong\u003e — Begin filling with water slowly. As weight builds, the liner will settle perfectly. Trim excess liner, leaving 30cm edge, and secure under coping stones or turf\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eWhy Choose EPDM Over PVC or HDPE?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003evs PVC:\u003c\/strong\u003e EPDM remains flexible indefinitely. PVC can become brittle after years of UV exposure. EPDM has a proven 40+ year lifespan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs HDPE:\u003c\/strong\u003e EPDM is far more flexible and easier to install in irregular pond shapes. EPDM joins can be cold-bonded with tape; HDPE requires heat welding\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs Butyl:\u003c\/strong\u003e EPDM offers similar performance to Butyl at a more accessible price point — making it the top choice for value-conscious pond builders\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 approved safe for all fish species including koi and goldfish\u003c\/li\u003e\n\u003cli\u003e✅ Free UK Delivery — Free delivery to all mainland UK addresses\u003c\/li\u003e\n\u003cli\u003e✅ Lifetime Guarantee — Manufacturer's lifetime guarantee on material integrity\u003c\/li\u003e\n\u003cli\u003e✅ Expert Advice Available — Call our pond specialists for free sizing and installation 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 the liner size I need?\u003c\/strong\u003e\u003cbr\u003eA: Liner Length = Pond Length + (2 × Max Depth) + 0.6m; Liner Width = Pond Width + (2 × Max Depth) + 0.6m. Always round up to the next available size.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can EPDM be repaired if it gets a puncture?\u003c\/strong\u003e\u003cbr\u003eA: Yes. EPDM is one of the easiest liner materials to repair. Small punctures can be patched with EPDM repair tape in under 30 minutes. The pond doesn't need to be fully drained for minor repairs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is EPDM safe for plants as well as fish?\u003c\/strong\u003e\u003cbr\u003eA: Absolutely. EPDM is 100% inert and does not leach any chemicals into the water. It is safe for fish, aquatic plants, amphibians, and all pond wildlife.\u003c\/p\u003e","brand":"PondLiners Co","offers":[{"title":"3m x 3m","offer_id":57665555956060,"sku":null,"price":220.99,"currency_code":"GBP","in_stock":true},{"title":"4m x 3m","offer_id":57665555988828,"sku":null,"price":295.99,"currency_code":"GBP","in_stock":true},{"title":"5m x 4m","offer_id":57665556021596,"sku":null,"price":490.99,"currency_code":"GBP","in_stock":true},{"title":"6m x 5m","offer_id":57665556054364,"sku":null,"price":735.99,"currency_code":"GBP","in_stock":true},{"title":"7m x 6m","offer_id":57665556087132,"sku":null,"price":1048.99,"currency_code":"GBP","in_stock":true},{"title":"8m x 6m","offer_id":57665556119900,"sku":null,"price":1176.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0889\/2035\/9260\/files\/62885eb06167f749d67b42cbcae602b1.jpg?v=1779040205"},{"product_id":"epdm-pond-liner-geotextile-underlay-bundle-uk-0-75mm-fish-safe-complete-kit","title":"EPDM Pond Liner \u0026 Geotextile Underlay Bundle UK | 0.75mm Fish Safe | Complete Kit","description":"\u003ch2\u003eEPDM Rubber Pond Liner 0.75mm UK — Fish Safe | Lifetime Guarantee | Free UK Delivery\u003c\/h2\u003e\n\u003cp\u003eWhen it comes to pond liner materials, \u003cstrong\u003eEPDM rubber\u003c\/strong\u003e is the professional's first choice — and our \u003cstrong\u003e0.75mm EPDM Pond Liner\u003c\/strong\u003e is the UK's most popular choice for good reason. Flexible, fish-safe, UV-resistant, and backed by a Lifetime Guarantee, this is the liner trusted by garden designers, pond contractors, and DIY enthusiasts across the United Kingdom.\u003c\/p\u003e\n\u003cp\u003eEPDM (Ethylene Propylene Diene Monomer) is a synthetic rubber engineered specifically for outdoor applications. Unlike PVC liners that can become brittle over time, EPDM remains pliable for decades — maintaining its watertight integrity through the harshest UK winters and hottest summers without cracking, splitting, or degrading.\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\u003eEPDM Rubber (Ethylene Propylene Diene Monomer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e0.75mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-40°C to +80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV Resistance\u003c\/td\u003e\n\u003ctd\u003eExcellent — lifetime stable, no degradation\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 fish species and aquatic life\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuarantee\u003c\/td\u003e\n\u003ctd\u003eLifetime Guarantee on material\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElongation at Break\u003c\/td\u003e\n\u003ctd\u003e300%+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlexibility\u003c\/td\u003e\n\u003ctd\u003eExcellent — drapes and moulds to any pond contour\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColour\u003c\/td\u003e\n\u003ctd\u003eBlack (natural pond appearance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOzone\/Chemical Resistance\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003e5 Use Cases for EPDM 0.75mm Pond Liner\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e🌿 \u003cstrong\u003eWildlife Garden Ponds\u003c\/strong\u003e — Create a thriving habitat for frogs, newts, dragonflies and hedgehogs. EPDM's flexible nature allows for gentle sloping edges that wildlife ponds require\u003c\/li\u003e\n\u003cli\u003e🐟 \u003cstrong\u003eGarden Koi Ponds\u003c\/strong\u003e — Safe for koi and goldfish; suitable for medium-sized koi ponds where 0.75mm provides excellent protection with proper underlay\u003c\/li\u003e\n\u003cli\u003e💧 \u003cstrong\u003eStream Courses and Waterfalls\u003c\/strong\u003e — EPDM's flexibility allows it to be formed around complex stream courses, waterfalls, and cascades without creasing\u003c\/li\u003e\n\u003cli\u003e🌸 \u003cstrong\u003eFormal Ornamental Ponds\u003c\/strong\u003e — Clean black finish creates the reflective appearance preferred in formal garden design\u003c\/li\u003e\n\u003cli\u003e🌊 \u003cstrong\u003eLarge Natural Ponds\u003c\/strong\u003e — Available in large sizes with the ability to seam-weld multiple sheets for very large naturalistic pond designs\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 prepare\u003c\/strong\u003e — Dig your pond to desired shape, incorporating shelf areas at 25–30cm depth for marginal plants. Remove all stones, roots, and sharp debris from all surfaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall underlay\u003c\/strong\u003e — Lay a 200gsm geotextile underlay before the EPDM liner — this is essential to protect the liner from punctures. Press flat against all surfaces with 30cm edge overlap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarm and position the liner\u003c\/strong\u003e — On a warm, sunny day, unfold the EPDM liner and allow it to warm for 30 minutes — warmer EPDM is more pliable and easier to mould. Centre over the pond\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMould to shape\u003c\/strong\u003e — Gently press the liner into the pond contours, creating neat pleats at corners. Work from the centre outward. Do not stretch excessively\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFill and secure\u003c\/strong\u003e — Begin filling with water slowly. As weight builds, the liner will settle perfectly. Trim excess liner, leaving 30cm edge, and secure under coping stones or turf\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eWhy Choose EPDM Over PVC or HDPE?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003evs PVC:\u003c\/strong\u003e EPDM remains flexible indefinitely. PVC can become brittle after years of UV exposure. EPDM has a proven 40+ year lifespan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs HDPE:\u003c\/strong\u003e EPDM is far more flexible and easier to install in irregular pond shapes. EPDM joins can be cold-bonded with tape; HDPE requires heat welding\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs Butyl:\u003c\/strong\u003e EPDM offers similar performance to Butyl at a more accessible price point — making it the top choice for value-conscious pond builders\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 approved safe for all fish species including koi and goldfish\u003c\/li\u003e\n\u003cli\u003e✅ Free UK Delivery — Free delivery to all mainland UK addresses\u003c\/li\u003e\n\u003cli\u003e✅ Lifetime Guarantee — Manufacturer's lifetime guarantee on material integrity\u003c\/li\u003e\n\u003cli\u003e✅ Expert Advice Available — Call our pond specialists for free sizing and installation 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 the liner size I need?\u003c\/strong\u003e\u003cbr\u003eA: Liner Length = Pond Length + (2 × Max Depth) + 0.6m; Liner Width = Pond Width + (2 × Max Depth) + 0.6m. Always round up to the next available size.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can EPDM be repaired if it gets a puncture?\u003c\/strong\u003e\u003cbr\u003eA: Yes. EPDM is one of the easiest liner materials to repair. Small punctures can be patched with EPDM repair tape in under 30 minutes. The pond doesn't need to be fully drained for minor repairs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is EPDM safe for plants as well as fish?\u003c\/strong\u003e\u003cbr\u003eA: Absolutely. EPDM is 100% inert and does not leach any chemicals into the water. It is safe for fish, aquatic plants, amphibians, and all pond wildlife.\u003c\/p\u003e","brand":"PondLiners Co","offers":[{"title":"3x3m","offer_id":57665828815196,"sku":null,"price":220.99,"currency_code":"GBP","in_stock":true},{"title":"4x3m","offer_id":57665828847964,"sku":null,"price":295.99,"currency_code":"GBP","in_stock":true},{"title":"5x4m","offer_id":57665828880732,"sku":null,"price":490.99,"currency_code":"GBP","in_stock":true},{"title":"6x5m","offer_id":57665828913500,"sku":null,"price":735.99,"currency_code":"GBP","in_stock":true},{"title":"7x6m","offer_id":57665828946268,"sku":null,"price":1048.99,"currency_code":"GBP","in_stock":true},{"title":"8x6m","offer_id":57665828979036,"sku":null,"price":1176.99,"currency_code":"GBP","in_stock":true},{"title":"10x8m","offer_id":57665829011804,"sku":null,"price":1969.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0889\/2035\/9260\/files\/55dcbe0d41ffe907c94cc51c4df7fcec.jpg?v=1779039650"},{"product_id":"wildlife-pond-starter-kit-uk-epdm-liner-underlay-pond-sealer","title":"Wildlife Pond Starter Kit UK | EPDM Liner + Underlay + Pond Sealer","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\u003ctbody\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 0.75mm 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\/tbody\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":57665829273948,"sku":null,"price":220.99,"currency_code":"GBP","in_stock":true},{"title":"4x3m","offer_id":57665829306716,"sku":null,"price":295.99,"currency_code":"GBP","in_stock":true},{"title":"5x4m","offer_id":57665829339484,"sku":null,"price":490.99,"currency_code":"GBP","in_stock":true},{"title":"6x5m","offer_id":57665829372252,"sku":null,"price":735.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0889\/2035\/9260\/files\/Wildlife_Pond_Starter_Kit_UK_EPDM_Liner_Underlay_Pond_Sealer.jpg?v=1779715477"},{"product_id":"koi-pond-professional-kit-uk-epdm-1-0mm-heavy-duty-premium-underlay","title":"Koi Pond Professional Kit UK | EPDM 1.0mm Heavy Duty + Premium Underlay","description":"\u003ch2\u003eEPDM Pond Liner 1.0mm Heavy Duty UK — Professional Grade | Fish Safe | Lifetime Guarantee\u003c\/h2\u003e\n\u003cp\u003eDemand professional-grade performance from your pond? Our \u003cstrong\u003e1.0mm Heavy Duty EPDM Pond Liner\u003c\/strong\u003e is the specification chosen by professional pond contractors, koi breeders, and serious pond enthusiasts across the UK. One-third thicker than standard pond liner, this is the ultimate in EPDM performance — delivering superior puncture resistance, maximum durability, and a lifetime of leak-free operation.\u003c\/p\u003e\n\u003cp\u003eWhen koi fish values, complex rockwork, or simply the desire for the absolute best motivate your pond build, 1.0mm EPDM is the answer. Its additional mass provides meaningful improvements in puncture resistance and longevity compared to standard 0.75mm liner, making it the professional's choice for ponds built to last generations.\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\u003eEPDM Rubber — Heavy Duty Grade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e1.0mm (33% thicker than standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-40°C to +80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV Resistance\u003c\/td\u003e\n\u003ctd\u003eExcellent — enhanced by greater material thickness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFish\/Koi Safe\u003c\/td\u003e\n\u003ctd\u003e✅ Yes — certified, inert, non-toxic\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\u003eElongation at Break\u003c\/td\u003e\n\u003ctd\u003e300%+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePuncture Resistance\u003c\/td\u003e\n\u003ctd\u003eHeavy duty — significantly enhanced vs 0.75mm\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\u003eRoot Resistance\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003e5 Use Cases for 1.0mm Heavy Duty EPDM\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e🐠 \u003cstrong\u003eShow Koi Ponds\u003c\/strong\u003e — Where fish values justify the very best materials. 1.0mm provides the security that serious koi collectors demand\u003c\/li\u003e\n\u003cli\u003e🪨 \u003cstrong\u003eRocky Gravel-Based Ponds\u003c\/strong\u003e — Where decorative cobbles, rockery, and gravel create additional puncture risk, extra thickness provides critical protection\u003c\/li\u003e\n\u003cli\u003e🏗️ \u003cstrong\u003eContractor-Built Ponds\u003c\/strong\u003e — 1.0mm is the standard specification for professionally installed ponds in landscaping contracts\u003c\/li\u003e\n\u003cli\u003e🌊 \u003cstrong\u003eLarge Volume Water Gardens\u003c\/strong\u003e — 10,000+ litre ponds where liner replacement would be enormously disruptive and expensive\u003c\/li\u003e\n\u003cli\u003e🏡 \u003cstrong\u003eLong-Term Legacy Ponds\u003c\/strong\u003e — Projects where the pond is intended to be a permanent garden feature for 50+ years\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProfessional Installation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrepare a perfect excavation\u003c\/strong\u003e — Apply a 50mm sand blinding layer to the base and firm it flat before proceeding\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble-layer underlay\u003c\/strong\u003e — Use 200gsm geotextile underlay — consider double-layering at the base of deeper ponds for maximum protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAllow extended warm-up time\u003c\/strong\u003e — 1.0mm EPDM benefits from 45–60 minutes of sun exposure before forming the liner into the pond\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional forming\u003c\/strong\u003e — Work methodically, forming the liner into corners with neat, tight pleats. The extra thickness holds its shape well once positioned correctly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePermanent edge securing\u003c\/strong\u003e — Fold liner edge under concrete coping and bed in with mortar. Apply pond sealer to any concrete surfaces that will contact water\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eWhy Choose 1.0mm Over Standard 0.75mm?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e33% more material — significantly improved puncture and tear resistance\u003c\/li\u003e\n\u003cli\u003eProfessional specification — specified in professional landscaping contracts across the UK\u003c\/li\u003e\n\u003cli\u003eLonger lifespan — more material means slower UV degradation over decades\u003c\/li\u003e\n\u003cli\u003eKoi breeder's choice — the liner chosen by experienced koi keepers\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 — Koi and goldfish safe, inert EPDM material\u003c\/li\u003e\n\u003cli\u003e✅ Free UK Delivery — All mainland UK sizes delivered free\u003c\/li\u003e\n\u003cli\u003e✅ Lifetime Guarantee — Professional-grade lifetime liner warranty\u003c\/li\u003e\n\u003cli\u003e✅ Expert Advice Available — Pond contractor and koi specialists on hand\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I still need underlay with 1.0mm EPDM?\u003c\/strong\u003e\u003cbr\u003eA: Yes, always. Even with the heavier 1.0mm liner, geotextile underlay is essential protection against stone punctures, root penetration, and ground movement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What's the difference between 0.75mm and 1.0mm EPDM in practice?\u003c\/strong\u003e\u003cbr\u003eA: The 1.0mm is noticeably heavier and thicker, providing improved puncture resistance. For koi ponds, ponds with rocky substrates, or where longevity is critical, 1.0mm is the recommended choice.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can 1.0mm EPDM be seam-welded for very large ponds?\u003c\/strong\u003e\u003cbr\u003eA: Yes. 1.0mm EPDM can be joined using cold-bond EPDM adhesive tape (preferred for DIY) or hot-air seam welding (professional). Contact our team for advice.\u003c\/p\u003e","brand":"PondLiners Co","offers":[{"title":"5x4m","offer_id":57665829405020,"sku":null,"price":293.22,"currency_code":"GBP","in_stock":true},{"title":"6x5m","offer_id":57665829437788,"sku":null,"price":439.83,"currency_code":"GBP","in_stock":true},{"title":"7x6m","offer_id":57665829470556,"sku":null,"price":615.76,"currency_code":"GBP","in_stock":true},{"title":"8x6m","offer_id":57665829503324,"sku":null,"price":703.73,"currency_code":"GBP","in_stock":true},{"title":"10x8m","offer_id":57665829536092,"sku":null,"price":1172.88,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0889\/2035\/9260\/files\/228bd893dcdab0bcb834f9748103ee9f.jpg?v=1779040001"}],"url":"https:\/\/www.pondlinersco.co.uk\/collections\/epdm-pond-liners.oembed","provider":"PondLinersco.co.uk","version":"1.0","type":"link"}