Create permanent, watertight joints in pond liners and waterproofing membranes with this professional-grade Double-Sided Butyl Joining Tape. 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.
Whether 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.
Technical Specifications
| Specification |
Details |
| Material |
Double-sided butyl rubber tape |
| Dimensions |
50mm wide × 1.5mm thick × available per metre |
| Colour |
Black |
| Application |
Membrane jointing, pond liner repair, waterproofing |
| Bond Type |
Pressure-sensitive self-adhesive — both sides |
| Waterproof |
Yes — permanently waterproof bond |
| Compatible With |
Butyl, EPDM, HDPE, LDPE, PVC pond liners and waterproofing membranes |
| UV Resistance |
Yes |
| Temperature Range |
-40°C to +100°C |
| Application Temperature |
Best applied above 5°C |
Key Features
- ✅ Double-sided butyl rubber — bonds to both liner surfaces simultaneously for maximum strength
- ✅ Instant waterproof seal — no curing time required; waterproof as soon as pressure is applied
- ✅ 50mm wide — wide enough to create a reliable overlap joint
- ✅ Flexible and conformable — follows the contours of your pond liner without bridging
- ✅ Compatible with all major liner types — butyl, EPDM, HDPE, LDPE, PVC membranes
- ✅ UV resistant — won't degrade when exposed to sunlight
- ✅ No tools required — peel, press, and bond
- ✅ Professional grade — used by landscapers and waterproofing contractors
- ✅ Free UK Delivery
Ideal Applications
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Pond liner jointing — bond two liner sheets together to cover large or irregular ponds
-
Pond liner repair — seal punctures, tears, and holes in butyl, EPDM, and HDPE liners
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Edge hemming — fold and seal liner edges for a neat, professional finish
-
Waterproofing joints — seal overlapping sections of damp-proof membranes
-
Roof waterproofing — suitable for EPDM flat roof membrane jointing
-
Under-deck membranes — seal decking and terrace waterproofing membranes
How to Use Butyl Joining Tape
-
Clean the surfaces: Both liner surfaces must be dry, clean, and free of dirt, algae, and debris. Use isopropyl alcohol to clean if necessary.
-
Mark your overlap: Ensure a minimum 50–75mm overlap between the two liner sections.
-
Peel and position: Remove the release paper from one side of the tape. Position carefully on the first liner section and press firmly into place.
-
Bond the second layer: Remove the remaining release paper and carefully bring the second liner section down onto the tape. Avoid trapping air bubbles.
-
Apply pressure: Use a roller or flat tool to apply firm, even pressure along the entire joint length to maximise bond strength.
-
Allow to settle: For best results, allow 30 minutes before filling/testing the joint.
Pro Tip: Cold Weather Application
For 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.
Trusted by UK pond builders and landscapers with 295+ five-star reviews, this butyl joining tape is the professional choice for reliable, long-lasting pond liner joints and repairs.
💧 Permanently Waterproof | 🔄 Double-Sided | 🏗️ Professional Grade | ☀️ UV Resistant | 🚚 Free UK Delivery
