8 Mil WB 12 x 100 Roll Polyethylene Vapor Barrier USA 8 Mil WB 12 x 100 Roll Product Description Protecting the crawl space is one of the best maintenance tips for your home Crawl space is an area that is always vulnerable to damage due to excess moisture and humidity It is highly important to protect the crawl space by encapsulating it with suitable material Our 8 mil vapor barrier consists of a White/Black steel reinforced