These homeowners in Sandston, VA were concerned about moisture in their crawl space. Many areas of the crawl space dirt floor were exposed and efflorescence covered the porous block walls. To address the moisture issues from the foundation walls, we installed a 10-mil CleanSpace Vapor Barrier. This crawl space liner is installed over the crawl space floor, wrapped around each pier, and mechanically attached to the foundation walls above the outside grade. This will help protect the crawl space from the earth’s moisture.