Walther Strong Deck Tape - Complete Deck Joist Protection Tape - Protects New or Existing Timber Frames from Water/Moisture Rot & Frame Weathering. 50MM x 20M - 25 Year Guarantee

Goes on well and easy to use. This stuff adheres well so well in fact that within a minute or so it's immovable. I tried lifting a small section and it takes wood with it! That's a good thing really and difficult to mess up anyway as it's under a deck and perfection is not required. My only grumble is the cost. Its really expensive stuff but then all quality deck tape seems to be.

Brilliant tape and extra tacky.I would not hesitate to reorder if I needed more. The only negative is the price, and I'm sure some good old duck tape at a fraction of the cost would probably do as good a job only time will tell I suppose.

Does the job and sticks well but expensive for what it is

Bought this to protect my decking joists.Was originally going to paint the joists with Bitumen paint, but went for this instead.Pros:- Quick and simple to apply- Good adhesion- Immediately waterproofCons:- Expensive. In my opinion, this should be half the price.Overall, I would buy again, but at this price, I'd look for cheaper alternatives first.

The deck tape has strong adhesion capabilities and is easy to use. The 50mm size just big enough to cover joist tops and a little overlap down the sides. Here's hoping the additional cost will reap rewards in protection from the elements.

Nothing special to look at and Very expensive. I have used it alongside Bostic Flashband which is excellent and considerably less expensive. Only time will tell which is best.

what it was meant for

I’ve tried several brands and this is definitely the simplest to use and seems to perform best.No need for scissors as it can be torn straight by hand. Very forgiving of placement and any tangles and then sticks well, even on bends.Can’t comment on longevity yet, but other brands are bubbling and peeling yet this remains smooth.