Crawl Space Vapor Barrier, 10 mil 10'x100', Thick Plastic Sheeting, Drop Cloth Vapor Barrier Covering for Crawl Space Encapsulation, Heavy Duty Plastic sheeting, Black and White Panda Film

I bought 2-rolls of the 10-mil version, 10'X100' and it's plenty thick, but I'm putting over some Black vapor barrier, maybe 6-mil. I wrapped the cinder block post and tapped them closed. Laid the White side up and tapped all the joints flat. Bought 2-rolls of the 6" tape for the sealing. The tape is fantastic!! Sticks great to the new vapor barrier. There's an area when you open the crawl space door that's 11'X7'. I paced an individual piece of vapor down and then ran a 40'X10' over top, because this small area will be used as storage for tools and wanted to be sure the gravel underneath wouldn't poke through from being repeatedly stepped on. I closed and sealed off the crawl space vents. With that and the vapor barrier down and sealed I tell a big difference in the humidity level, going down. There was some very light mildew on some of the beams, so I mixed 1/2-cup Clorox and water in spray bottle and went through and treated the offending beams. Would highly recommend this product.

It's the real stuff, I'm always scared to buy things on online for things that are this serious but it turned out to be as good as supply house material maybe from the same source

I've used a lot of different kinds of vapor barrier for crawl spaces and this is the best bang for your buck. Very durable, and measurements are exact. Will be ordering this from now on.

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That’s the price they gave me—12 grand to put down plastic under my house. I even offered to pay for the materials! I know it’s not an easy job, but these companies tend to take advantage of people needing crawlspace work. The guy told me it would take 4 people 4 days to get it done. Well, I did it myself in 3 days. Okay, my wife helped me straighten it out in the yard—ha! Bout wore me out, but it looks great. The material is strong. The 12 mil is perfect for me—cuts easy, but it won’t puncture easily. Here’s a tip: open it all up in advance. I learned that the hard way. Don’t even bother trying to use three perfect pieces; just buy extra seam tape, and it’ll look good. Turned a $12,000 job into a $500 one! I bought staples, too, but only used about 12 before I started taping. Also, get some good lighting down there—it makes the work way easier.