The Foundation two-sided Seal Tape was much stronger than I expected (impressive). Sticks and holds to the foundation and vapor barrier plastic without pulling away - even if/when you accidentally pull the plastic too hard.

I had a really difficult time getting this to stick to the concrete. I brushed and cleaned the wall prior to applying the seam tape, but it did not want to stick. I ended up stapling the vapor barrier to the sill plate until I was able to get the pins installed. So, it appears the the concrete needs to be REALLY clean for this to be effective.

I just had my basement walls parged. The stucco is clean and dry but this tape would barely stick to it. It's a waste of money. Use the foundation pins and seal with the caulk instead.

We used the 2 sided foundation seam tape to install heavy 20mil vapor barrier over several days onto dry foundation walls. It was 4 days from our first wall panel installation until we did all the pins at the end. We had NO panels fall off the wall while finishing.

TIP: Take a cheaper tape like duck tape and use it like a lint roller to remove dust and loose bits before applying the tape. It was super helpful once we thought to do it.

The foundation blocks under my house my house are over 60 years old. Even after brushing them with the spacial brush these tape wouldn't stick. The caulk i ordered just in case did work but I will need to buy lots more.