Prevent water intrusion into masonry and concrete structures by installing this Delta foundation waterproofing membrane. It measures 6.6' x 65.6', so it can cover a large area. It features high-density polyethylene resin that resists acids and other deteriorating ground agents. The air-gap design on the surface of this membrane waterproofing is able to control moisture in heavy rain and damp areas. This brown and orange membrane has a convenient roll design, which makes it easy to install quickly and effortlessly.