Sump pumps mold companies near Atlanta, Georgia 2025: How does crawl space encapsulation work? At Atlanta Vapor Barrier, we do full encapsulations and partial encapsulations. A fully encapsulated crawl space will have no outside air coming in. We seal your vents and cracks in your foundation walls where air is entering. Your piers (also known as columns or posts) are wrapped. The foundation walls are wrapped as well, and all seams are sealed with strong waterproof tape. A huge plus is that a fully encapsulated crawl space does not need flooring insulation. So what’s a partial encapsulation? Basically it’s the …