CleanSpace Vapor Barrier

A heavy-duty 20-mil CleanSpace liner was used to cover the flooring of this crawl space. This vapor barrier helps to prevent moisture from rising into the crawl space and increasing the relative humidity. It gets wrapped around all piers and mechanically fastened to the foundation walls six to eight inches above outside grade. An antimicrobial called UltraFresh is built into the 7-layer polyethylene liner to help prevent mold and mildew growth on the vapor barrier itself.