T-Rex Waterproof Butyl Tape for Roof and Leak Repair 101mm x 1.52cm, Flashing Repair, Sealant Strip Patch for Repairing Roof Crack, Window Glass, Gutter, Downpipe, Pond Liners, Paddling Pool, Airtight

Had leak in rain water barrel due to ice expansion. Thought I’d try this tape to stem the flow of water at the bottom of the tank and it worked first time.

I have a very large football sized hole in my pond liner right at the water line., caused by rats when the pond was surrounded with decking that they loved under. I attempted to fix it in early Summer with a piece of liner and the waterproof pond liner repair silicon (can’t remember the name but it’s the one in the yellow cartridge). Well it didn’t work and within a couple of weeks the pond was leaking until I was topping it up ever couple of days.So decided to try this. I did not apply it under water. Instead let the pond down so that the full hole and an inch or so below it were fully exposed and could dry out. I applied the tape on the underside and top of the liner, so that it overlapped the liner by 2+ inches all the way around and then stuck to itself over the hole itself. I didn’t add any patching liner. That was on August 31st and I’m writing this on Sep 24th. So far I have been able to have my pond filed half way over that taped hole and haven’t had to top the pond up once since (other than when I backwash clean the filter, of course).The liner I have is a Swell plastic liner, which I heard apparently requires a swell patch kit to fix any problems. This tape is proving that wrong so far. Will update this review if/when the tape starts to peel away.

Our large rectangular bestway pool was on its last legs this summer, but I didnt want to invest in a new one yet so I thought there was nothing to lose trying this out.I was gobsmacked. I used it to patch up the obviously worn parts of the lining where I knew it was leaking after cleaning the pool.Once the pool was up it started springing leaks, I was skeptical about how it would fare with water actually coming through as you stick it on,but by applying in one direction drying around it as you go, it sealed the hole and remained water tight for the rest of the month.I will definitely be keeping some of this on hand for emergencies!

This tape fixed a 5 inch split in my pond liner, filled the gap with expanding foam first, cut off the excess then applied this tape in overlapping layers over the expanded foam - pond has not leaked one week on. Forgot to take photos, Sorry!

Not much tape on the roll

I used it on my greenhouse, and sticks very firm

very good

Just used this for the first time to cover a small leaking area on the top of my boat (steel gunnel), the surface was cold and I managed to dry it but as soon as I applied it, the tape lifted straight off and wouldn't stick at all. It states that it 'even works underwater'. Really?? couldn't get it to stick at all. Waste of money.