Dimpled Polyethylene Drainage Matting

The dimples serve to quickly direct water to the footer drainage system and provide a chamber of air between.

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. Get an extra layer of moisture drainage and durability with crawl space drainage matting. Whitecap drainage matting improves water movement due to the dimpled design and may enhance the effectiveness of a radon 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. 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. Think of dimpled drainage matting as a durable sub floor between the liner and the gravel or dirt crawlspace floor.