Some parts of my job was over sand and some areas were hardend clay. There was also an area of old block footing with some jagged edges, so I decided to use strips of 12 mill on top of the blocks for a second layer of defence. Over all I've been crawling repedly over the plastic fixing various neglected issues due to lack of motivation to crawl around on dirt with spiders and centapieds. While the sand areas are easier on the knees, even the hard jagged edges of the clay have proven to be problem free from puncture. The house now smells better and the humidity is in check!!!

I used this vapor barrier for the foundation walls and pillars. It is much easier to cut than the thicker equivalent for ground use, which I also have. This is the same as the ground barrier, just a little thinner. They have both done an outstanding job, and now I'm waiting for the next few months to see how well they keep the moisture out of the crawl space. So far, everything is dry.

Your 12 mil. Vapor barrier is a very good product. Should hold up for a lifetime. Thsnks for your rapid delivery.

Product was as described and worked perfectly in our installation. Happy with the product.

Vapour barrier laid down super easy even in a tight space. It was easy to maneuver over the felt 550. Planned out the pieces and cut them in the garage to make transportation into the crawl space easier. Only installed a few days, but the musty odor is gone from the house & crawl space, and the RH has dropped 21% already, from 95 to 74 (with the Compact Aire dehumidifier).



Durability of the product is unknown at this point, but the high quality makes me think it should last a fairly long time.