I have used this tape on several crawlspace encapsulation projects and it has always performed flawlessly. I have used it in various environmental conditions including very wet crawlspaces. I have never had a problem with it not sticking to the wall. I do clean concrete block walls with a stiff bristle brush, not a wire brush, prior to application of the tape. I also make sure that the walls are not damp to the touch. This tape works great and really bonds well to liner material.

Very sticky, good hold on cmu blocks + it helped me to catch bunch of baby snakes when I left it open preparing for the next day installation of vapor barrier

I was amazed that this tape stuck fast to my concrete blocks and didn't come loose when attaching the wall vapor barrier. This product is well worth the money.

This tape was amazing and was easy to apply and held the 12mm encapsulation material with no problem. I did the project when I had time in the schedule and had to leave the job with only the tape holding the barrier for two weeks before I could install the foundation pins and it continued to stick and hold without failure. Great product!

This foundation seal tape is very good at sticking to everything. You can pull it tight and it doesn't rip. Makes it easy to hang your sheets of plastic. I used silver back 20mil and didn't get back in the crawl for a couple days to get the foundation pins in. When I got back to it. Everything was still stuck to the wall. Durability is unknown, I've only had it up a couple of weeks. The wall has to be pretty clean for it to stick but doesn't have to be spotless.