ADHES Deck Joist Tape - Adhesive Butyl Waterproof Flashing Tape 5cm x 15m - 1 Roll for Wood Decks, Beams, Roof, Outdoor Construction

So, despite this products name, I didn't actually use it as a "deck" or "joist" tape.I needed a thin, flexible and durable tape, but with a very very strong adhesive on it, to seal an air leak on a very tired hypalon inflatable boat tube. All previous attempts to patch it had failed and we were getting desperate!Well, this stuff is brilliant! following other recommendations and with prior experience with similar products, the key to getting the very best out of this is, is to gently heat the tape before applying.Personally, I cut the tape into appropriate sized strips, then gently wafted each one over the top of a heat gun on medium power, glue side towards the heat, just until the tape started to go really soft and droop, maybe 5.. 10seconds max, then just affix it to whatever your trying to seal and push down hard and manipulate out any air bubbles.That bit of heat seems to really activate the glue and it sealed my leak issue. I left it a couple of hours to set and then tested upto tube pressure of 3psi and it had sealed perfectly.

Does exactly what it says it will do. I will be buying more.

Very good. Worked well. Also used for other purposes.

Works but…. Take the paper sides off before starting to remove the backing. If you don’t you’ll get little nicks in the backing paper that means the backing splits so you spend ages trying to get the backing started again

Excellent adhesion. Feel quality. Nice thickness. Gives me confidence it will stop water penetrating or lieing on top of the joists

Why did you choose this product over others?:It looked the business and was.

This stuff is very very tacky and will stick to your joists. The problem is, the glue oozes out the sides on the roll and as your peeling the backing tape the tape tears so you’ve got to continually try and pick the torn backing paper and start again, out of the 6 rolls that I bought, none of them were easy to use. It was frustrating as I couldn’t remove no more than 2 ft of tape without having stop and go back. If they used less glue to stop it oozing out the sides, then the problem wouldn’t happen. I need one more roll and I won’t be buying this brand again.

Great product. Easy to apply.