REKVEN Pond Liner Seam Tape Kit — 30 ft x 3 in Double-Sided Butyl Tape with Roller & Prep Sponge, 40 mil Waterproof Seal

REKVEN Pond Liner Seam Tape Kit is a 30 ft x 3 in double-sided butyl rubber tape with roller and prep sponge designed to create an immediate, watertight bond for pond liners and water features.

If you maintain a koi pond, water garden, waterfall or any lined water feature, keeping seams watertight is essential. This kit uses 40 mil black butyl—a flexible, non-curing adhesive film—that presses into liner seams to form a long-lasting seal without liquid glue or lengthy cure times. The package includes a full roll of double-sided tape, an application roller for removing trapped air, and a prep sponge so you can clean and bond in one session.

How does the tape stop leaks in pond liners?

The 40 mil butyl material fills irregularities in seams and beds down without creating a raised ridge, forming a continuous, waterproof barrier. Because it is double-sided, the tape adheres to both liner faces and stays pliable underwater, so it moves with the liner instead of cracking or peeling.

• 40 mil thickness for durable sealing and gap filling
• Double-sided adhesion bonds both sides of the seam
• Soft enough to roll flat, preventing ridges that trap debris
• Remains stable and flexible when submerged

Which liner materials will this butyl tape bond to?

The tape is formulated to bond EPDM, PVC and multiple polyethylene-based liners including HDPE, LDPE, RPE and LLDPE. For optimal, long-term adhesion on some plastics we recommend using a compatible liner primer before applying the tape.

• Works with EPDM and PVC liners commonly used in ponds
• Bonds polyethylene variants like HDPE, LDPE, RPE and LLDPE
• Primer recommended for the strongest, longest-lasting bond
• Suitable for both small backyard ponds and larger water features

How simple is the installation for DIYers?

Installation is straightforward: clean the seam area, remove the release liner, press the tape in place and roll to squeeze out air. No messy glues, no wait for cure—just peel and press for an immediate bond that you can test right away.

• Includes prep sponge to clean and dry surfaces before bonding
• Application roller helps remove trapped air for a tight seal
• Peel-and-stick method, no liquid adhesives required
• Quick to install for first-time DIYers and pros alike

What’s included and what should I expect from the finish?

The kit contains one 30 ft x 3 in roll of double-sided black butyl seam tape, an application roller, and a prepping sponge—everything to prepare and finish seams. Once applied the cured butyl sits flat and discreet along the seam so it won’t distract from the pond’s appearance while providing a reliable seal underwater.

• One 30 ft x 3 in roll of double-sided butyl seam tape
• Application roller to compact tape and remove air pockets
• Prep sponge to clean liner surfaces before application
• Commercial-grade manufacturing under ISO 9001 standards

Who is this for: The REKVEN Pond Liner Seam Tape Kit is aimed at pond owners, landscapers and maintenance pros who need a fast, durable way to repair or join pond liners without messy adhesives. It’s practical for small backyard ponds, larger ornamental water features, koi systems and anyone who prefers a clean, immediate seal that remains flexible and reliable underwater.