I'm sealing the crawl space on a new house under construction. I applied the tape and vinyl liner to the foundation walls prior to the wood floor system being installed. I made sure there wasn't any blobs of mortar in the way of the tape. The block was dry so the tape had good bonding strength. The excellent adhesive strength of the tape allowed me to install the tape along the entire wall section (60')and then hang the vinyl prior to drilling for the pins. Two days later I noticed the tape pulling away from the block in some of the corners. Since I had ordered extra foundation pins, I went back and installed pins closer in the corners as well as in between all of the original pins. Therefore, pins are every foot along the walls. I feel confident the vinyl will not come down now.

Nice wide tape, easy to work with, would buy again. Fast shipping.

Pins work great! Wide head. Fast shipping.

The vapor barrier products including the liners, foundation pins, foundation tape and seam tape were all of the highest quality, easy to install. I did this as one man job, probably 6 hours total for a 900 sq ft crawlspace

Well, this is just an outstanding product. I love the way it drapes over concrete footings, the material just seems to naturally hug 90 degree transitions, far better than you would imagine.