In this episode, Bill explains the white, powdery stuff that often appears in concrete basement walls. The minerals washed away from the surrounding soil, as well as the concrete block itself, are carried into the basement with the water that is constantly seeping in. As the water dries they crystallize and build up on the walls of your basement. That substance known as efflorescence and it is often mistaken as mold. Avoiding water seepage using the CleanSpace Vapor Barrier, the DryTrak Basement Water Control System, and the WaterGuard Perimeter Drainage System can help to avoid the buildup of efflorescence on your basement walls.