My 600 sq ft metal building has a dirt floor and suffered from high humidity leading to mold and mildew. I placed the 20 mil with the silver side up, taped it to the metal frame and placed pins about every 18 inches. It looks great and has dramatically reduced humidity. An excellent product. I do suggest that when drilling the holes in the metal frame that instead of drilling 1/4” it was better to drill 7/32” holes. It made the plastic pins tighter.

 

This vapor barrier is very tough. Even over an area where I had stone base the vapor barrier didn't fail. I've crawled over it now many times and only have seen some minor strain marks on the stone. This product is tough but easy to work with. Highly recommend it!

Excellent product.

VERY COST EFFECTIVE. REQUIRES TWO PERSONS TO INSTALL.

So far I could not be more pleased with the white/silver liner I ordered to be installed in the crawl space of our home. I had obtained an estimate from a local company that specializes in crawl space solutions. The installed price was over $6,000. After some on line research I found your site and product information. The liner I purchased is very comparable with what the contractor uses. I could not afford a solution totally comparable to the contractor's solution which did have other components I chose to eliminate, but I believe this was a great compromise. Compromising saved me over $4,000!