I ordered this product to save money instead of having my Basement/Crawlspace contractor purchase and recharge me as a middleman. The product came to me very quickly and in good shape. The contractor who specializes in mold and radon commented that this was much higher quality product than what his company uses. (it would have been $1000 more also). He loved working with it, and said I will never have issues with mold, dust, or vapor. Also, customer service on the phone was excellent. I would purchase from this company again.

12 mil is good solid material, but it seems to have acquired wrinkles as it was rolled up and the wrinkles hardened into deep, sharp creases that could not be removed. Tried hot air to soften the plastic with little success. As a consequence, it is simply not possible to tape seams securely. Tape can't follow the profile of the creases

Block wall was completely dry and brushed off, but the tape would not stick to it. After attempting for the first 10ft I just gave up and used a caulking instead. It seemed to be more than sticky enough, just wouldn't stick to my concrete block wall.

I have used this product for many years.This is the best material to put in your crawlspace. No vapors will pass through. Be sure to tape your seams.This company has the best price

Well, I bought it twice in a row. What does that tell ya? Good stuff. Good performance.