This is three times heavier than anything I can find locally. I precut into sheets in the yard, I think dealing with the roll under the house would be quite hard. It's a bit stiff to get into the crawl space and unfold. As with another reviewer, I'm glad that day is behind me. I was sooo sore! It cuts like plastic with sizzors. The rocks and bits of broken concrete left from construction only put dents in this product, no holes. I am impressed with its strength.

VERY COST EFFECTIVE. REQUIRES TWO PERSONS TO INSTALL.

Perfect product for my crawlspace. I am 75 years old and installed it myself in one week-end. Received the order promptly in three days. Excellent service and good experience all around.

Excellent product.

This is great quality 12mil vapor barrier, it is durable and works perfectly.if i had the money i would buy the 20 mil you could probably have a track meet on that stuff because the 12 mil was great!