The CleanSpace Crawl Space Liner is a 20-mil crawl space vapor barrier that is installed on the floors and walls of a crawl space area.
Once installed, this 20 mil vapor barrier completely stops moisture from passing through to the home, including moisture from the dirt below and water vapor from dirt and concrete walls.
When combined with an airtight crawl space vent and/or door, the vapor barrier system will also protect your crawl space or basement from outside moisture and humidity that would otherwise pass in through openings in the crawl space walls (such as crawl space vents and openings around pipe penetrations).