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.

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

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

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.

Great product. Easy to apply.

The media could not be loaded. [Update. I've just had the opportunity to use this properly. I've used it on the top of timbers on a pergola. A few things to note:- The packaging lets it down. The orange and blue papers you can see in the pictures on the sides stick to the tape. At first that's not too big a deal, but as you get further into the roll, it gets really stuck and is pulling the glue off the tape. As you pull it away you end up with glue on the upper black surface of the tape. Might not matter if it will be hidden, but I needed to clean this off for a neater job.I also found that the backing paper was ripping. If you have a completely open job where you can easily unroll this straight, I think that will be less of an issue, but if you end up twisting the tape/roll at all (due to obstacles), the backing rips across the tape and you're left trying to pick a new start to pull it away (possibly on a bit that's already stuck down).I was using the "2 inch" tape which is actually about 49mm so a bit less than 2 inches. I went to buy another roll to finish the job and found that is not available (currently? forever?). There's a 4cm instead.I ended up buying another make. It’s perhaps worth comparing the two a little. I thought these would be near identical, but they were actually very different. I won’t name the other one here, but I will review it so you may be able to find it that way.This tape has a quite stiff plastic later with the adhesive on the back. It feels more like a strip of plastic than a piece of tape. Not very flexible, but seems quite tough.The other tape I bought was a much softer, more rubbery type. This made it easier to conform if needed. I don’t know whether that will translate into it being less hardwearing. I’ve tried to capture some of that in a video I’ve added.The backing materials were also very different. This Adhes tape has a white paper backing. As I’ve remarked above, I found this tearing in use making the job tricky.The other tape I bought had a backing which was a clear plasticky film. This was easier to work with in general as it did not tear a much. Being clear made it more tricky to find the end when it did tear however.The only other note for the Adhes tape is that I felt that it shrank. I fitted some and ran the end from the horizontal joist up slightly on to a vertical bit of timber. The next day, it had pulled away where it had been attached to the vertical part leaving just strings of adhesive. See pic.--------------------------------------------------------------------------------------------------------------------------------Despite the makers being confused (“reflective tape”?), the tape itself seems very good. I’ve not used this type of tape before, but have tried general purpose duct tapes, flashing tape, self-amalgamating tape etc.What I’ve learned from those is that exposure to sun is usually the killer even if they stick well and protect at the start. I’ve used flashing tape from supposedly reputable UK brands which was destroyed after a couple of years in place.This is positioned as joist tape meaning it will be mostly hidden from sun in normal use. They do state that it is UV resistant suggesting that it should be suitable for exposed use. But who knows? “Resistant” is about as useful as “up to” for the consumer.So I won’t know if this is really any good for about a year at least as it will need to get through the winter and then a year’s worth of sun and weather.Certainly seems as though it will stick well, but not sure how the top layer will last. Will be using on a potting shed that has sloping long window bars and a ledge which gets hammered by rain as well as the tops of some pergola beams.Will update review (you can see from my other reviews that I update with the good and the bad weeks, months and years later).