A dimple board with geotextile is a high-performance drainage and waterproofing solution used in foundation and below-grade applications. It consists of a durable plastic dimpled core, typically made from HDPE (High-Density Polyethylene), bonded to a layer of non-woven geotextile fabric. The dimpled structure creates an air gap between the foundation wall and the soil, allowing water ... https://www.greentekplast.com/drain-board.html