Sika Drainage Mat 420 4' X 50' Roll

4' x 50', 0.25" Thick, 8.5 Gallon Capacity Water Flow, Black, Non-Woven Polypropylene Filter Fabric, Self-Adhered, High Flow Dimpled Core, High Crush Resistant Geonet, Drainage Mat

Sika® Drainage Mat composites are available in both high flow dimpled core and high crush resistant geonet constructions. They perform a multi-faceted role by providing protection for RoofPro and Sikalastic®-320 NS/SL membranes as well as a means of collecting and conveying excess water in plaza decks, split slabs, planters, roof gardens and other roofing and waterproofing applications. Sika® Drainage Mat 1000 consists of a high density polyethylene geonet drainage core with its ridges heat fused to a layer of nonwoven polypropylene filter fabric on the top side and a heavy duty non-woven polypropylene membrane protection fabric on the bottom side. The filter fabric retains soil or sand particles as well as freshly placed concrete or grout, allowing filtered water to pass through to the core. The bottom protection fabric provides cushioning for the waterproofing membrane. The geonet core is highly crush resistant yet flexible enough to conform to irregular surfaces. Sika Drainage Mat 1000 is suitable.