Dimpled Polyethylene Drainage Matting

The plastic has an egg carton shape with protruding dimples that make the membrane fairly thick generally between 1 4 inch and 1 2 inch thick.

Dimpled polyethylene drainage matting. Matting has built in dimples that align both vertically and horizontally to rapidly channel water from grade to footer drainage system. A dimple mat is a sheet of semi rigid plastic usually high density polyethylene that comes in a roll. The white cap dimple drainage matting rolls are made of a high density polyethylene hdpe that offers a strong resistance to hydrostatic pressure and excellent drainage. It s high density polyethylene hdpe composition provides a good resistance to water pressure and aids in drainage.

Sika drainage mat 420 and 720 sika drainage mat 420 and 720 consist of an impermeable high flow dimpled polypropylene drainage core heat bonded to a layer of non woven polypropylene 420 or woven polypropylene 720 filter fabric on the top side and a polyethylene membrane protection film on the bottom side. The stud shaped dimples provide an air chamber between the roll and its matting surface. Whitecap drainage matting improves water movement due to the dimpled design and may enhance the effectiveness of a radon system.