Strong but easy to work with overall. Excellent vapor barrier. I know because I did test of the humidity in my crawl space before (usually around in high 60s%) and after (usually in the mid to high 50s%) It is a a huge difference and no more "crawl space" smell! Thanks!

Recently purchased and about 2/3 done with installing in my crawl space. It's good and sturdy and I'm really happy with the quality. It arrived quickly and installation has been easier than I expected it to be (and I am doing it by myself) My crawlspace used to be such a horrid place to have to go in and now it is becoming pleasant. Can't wait until I am finished and going to make a final sweep through to get rid of all the dirt any one that has to come work in my crawl space in the future is going to love me.

Not as stiff as I was expecting, and that is a good thing. Pretty easy to work with.

Very good product. For our purpose, it was the right choice. The area we covered does not get a lot of use, yet the 12 mil HSU looks like it will last a long time. The customer service was excellent. We called before we ordered any of the products and talked to one of your reps who answered our questions without giving us the sales pitch to get an order. We appreciated that because it gave us time to go back and look at the project and review what we intended to do. The website was very helpful and gives the DIYer a place to start. Delivery was quick and everything we ordered came on time, with no damage.