High Density Polyethylene Dimpled Drain Board Sheet For Foundations / Basement

High Hardness Dimpled Drainage Board Used on Green Roof Project​​ Description: Plastic dimple drainage sheet is made of high molecular, produced by extrusion and adsorption. The tri-dimensional space can drain gas and fluid. It’s a multi-functional material, can from channels for water and gas easily, which is sound insulation and vibration isolation. In the field of civil construction can be widely used in building roof system layer overhead, planted roof drainage ventilatio