Pond Liner Seam Tape Kit - 30 Feet x 3 Inch - Double Sided Butyl Tape - Bond Seal or Repair EPDM PVC HDPE LDPE RPE LLDPE - Perfect for Small or Large Fish and Koi Ponds (Kit - Roller & Sponge)

This has worked exceptionally well. Only issues I had were from improper preparation of the surfaces. I had no issues getting this to adhere to my rubber liner. I used it to secure the top of my liner to a cinder block. Only caution is when the temperature is well into the 90's it becomes very playable and difficult to remove the backing.

Works as advertised

Very hard to use. Don't get your finger stuck on it!! I am sure it will hold well and it seems to be a well made product.. A little pricey though. Just handle it carefully.

This patch kit worked very well on my RPE liner. I cut out a section in order to remove a failed skimmer install. Very pleased with the outcome.

Well, if you wanted dead fish, look no further. I think the only way to successfully get this seam to stick and create a waterproof seal is to use a steam roller when the ambient temperature is near the melting point of lead. I had read good reviews about this product, so set about installing new pond. Step 1. Moved Koi to holding pond. Step 2. Tore down old pond. Step 3. Built new pond. Step 4. Created new large liner with a medium and small liner using this seam tape to create large liner that was leak proof. Step 5. Started to fill pond. Step 6. Added Koi to new pond. Step 7. Watched as pond leaked from about 13 locations. Step 8. Hoped that it wasn't actual leak but just leftover water. Step 9. Moved Koi back to holding pond Step 10. Emptied pond. Step 11. Patched locations of leaks with more seam tape. Step 12 Started to fill pond. Step 13. Sat back in amazement as it still leaked. Step 14. Kept koi in holding pond to reduce stress. Step 15. Bought 2 more liners and some more tape thinking I had surely just missed a step or messed up. Step 16. Used Seam tape to attach new liner to old liners, and new to new, therefore creating multiple seams with no breaks, virtually assuring a perfect leak proof seam. Step 17. Filled pond with water and added Koi as there was no way this would leak and we were seeing some signs of suffering from the Koi. Step 18. More leaks, like maybe 1 less than before. Step 19. Stand back in horror as we lost each koi 1 by 1. Step 19. We tried everything to rejuvenate and keep them alive. Step 19. Decide not to write review for 3 months as I still dread that day of losing all my koi. Step 20. Plan new pond with commercially created exact fit liner for new pond. Please, do yourself a favor and just spend the extra money and buy the perfect liner so you don't end up like me.

If you follow the instructions, you will fail. The sponge included is useless. Get a metal scrubber, you will need to rough up the liner in order for the product to adhere. I worked in aquaculture and our pond has a heavy duty liner, so that blue sponge did nothing. I cut a piece of spare liner, roughed both sides with a metal brush, applied a generous amount of the adhesive, then used the roller to smooth it out. Then you have to it sit for at least an hour. But so far it has repaired a hole caused by a falling tree in our pond. I only gave the product 3 stars because of the bad instructions and the useless sponge. But it does work if you look into how to patch a hole. It's similar to patching a bike tube.

This tape works great, but follow directions and warnings closely. Specifically, surface must be clean, dry, and above minimum working temps. If it doesn’t adhere well on initial contact it tends to stick to itself, then all bets are off. You end up with one big clump that can’t be undone. That said, if used properly it bonds well. Water tight, secure, and clean. I have patched holes under the waterline (purposely cut for pass through pipes that I later removed) in my EPDM pond liner that have lasted for several years. I have also had issues trying to seal a waterfall extension due to scale buildup on an old liner section.

had put the pond lining in a little off where one side was too low. It is made to use outside of the pond but I was able to apply it in the pond, let it sit a day and filled up. Worked fatastically.

Worked perfectly. Easy to apply, easy to work with

Should used the wider strip. 3 inches is quite narrow and quite hard to maintain straight