Henry DB50 is water retention and drainage composite. These composite consist of a high-strength dimpled water-retention polymeric core laminated with a top soil filter fabric and bottom protection fabric. The bottom fabric layer provides cushioning properties, offering protection to the underlying waterproofing membrane. Cups or 'dimples' in the core offer water storage capacity for vegetation layer between rain events, with overflow drainage once the 'dimple' storage capacity is reached. These products are used in conjunction with secondary root barrier protection from RootBloc™20 within the vegetative roof assembly. DB50 composite is manufactured with both recycled and prime plastic polymers.