CleanSpace in a wet and dirty crawlspace

The old 6 mil liner that gets installed after the house is built only serves to keep your knees a little cleaner. The edges are loose and that lets the moist air escape into the crawlspace. When that happens, the humidity goes up and leads to mold outbreaks. With the CleanSpace system in place, the wetness is sealed in the dirt and the air, wood, and insulation can dry out.