BLOCKOUT DS DRAINAGE SHEET is a geocomposite drainage sheet with high compressive strength and resistance to chemicals and plant roots. The polypropylene (PP) geotextile layer is securely bonded to the high-density polyethylene (HDPE) dimpled sheet through a special heat treatment process. BLOCKOUT DS DRAINAGE SHEET is used for draining water safely and continuously in both vertical and horizontal applications. In vertical applications, it protects the underground waterproofing systems from damage caused by soil pressure. In horizontal applications, it evenly distributes soil loads, reducing point loads across all areas.