I brushed the block but the tape didn't stick well in some areas. The areas that did not stick well, I used the plastic pins, with caulk and it did a nice job.

Easy to use and it works.

The tape was a WASTE OF TIME AND MONEY. I brushed the block but the tape never stuck. Was going to use the plastic pins with the tape. Instead I used the pins with caulk and everything went great.

This stuff is crazy sticky! It works good. If the wall is uneven, it hard to follow the wall though

This product works great. Absolutely essential if you are trying to affix the 12 mil barrier to a brick foundation in a space with 16 inch clearance. You have to be a contortionist. This product was strong enough to hold the plastic in place so I could belly crawl down the line. Because I had uneven brick to work with I had to go back through and put a foundation pin every 12 inches. It would not have been possible without this great product.