Drainage and Protection Layers - Sika® Drainage Mat

Prefabricated drainage composites

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 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 filter fabric retains soil or sand particles as well as freshly placed concrete or grout, allowing filtered water to pass into the drainage core. Use the nonwoven filter fabric with soil, sand or stone ballast; use the woven filter fabric with freshly placed concrete or grout. Sika® Drainage Mat 1000
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 for heavy loads and split slabs exposed to vehicular traffic. Sika® Drainage Mat GRS
Sika® Drainage Mat GRS for vegetated roof assemblies consists of an impermeable dimpled polystyrene drainage core. The core is perforated, then bonded to a root resistant non-woven polypropylene filter fabric on the top side and nonwoven polypropylene membrane protection fabric on the bottom side. The filter fabric helps prevent roots from affecting the efficiency of the drainage/aeration layer as well as retaining soil or other fine particles from being washed away and allows water to pass into the drainage core. The bottom protection fabric provides cushioning for the waterproofing membrane. The core is installed dimpled side down to allow water retention within the cups. Excess water is collected and conveyed to a proper collection system, helping to control drainage flow.

• Variable flow and compressive strength configurations
• High crush resistant configurations for vehicular traffic
• Pre-assembled filtration and membrane protection layers
• Conformable to irregular surfaces
• Mildew and rot resistant

Usage

• Plaza decks
• Split slabs
• Planters
• Ballasted roofs
• Green roofs
• Foundation Walls

Advantages

• Variable flow and compressive strength configurations
• High crush resistant configurations for vehicular traffic
• Pre-assembled filtration and membrane protection layers
• Conformable to irregular surfaces
• Mildew and rot resistant

Packaging

Individual rolls in plastic bags

Product Details

Product Information

Indefinite

Store properly in original, unopened, undamaged sealed packaging in dry conditions, flat and wrinkle free at temperatures between 40 °F and 95 °F (4-35 °C)

Technical Information

Application

Application Steps

Clean surface of loose debris and install Sika® Drainage Mat directly on Sikalastic® RoofPro and Sikalastic®-320 NS/SL membrane with filter fabric side up and membrane protection layer down and in the direction of maximum slope. Attach mat to membrane surface with Sikaflex® 11FC or approved adhesive as necessary to keep in position. At edge overlaps place adjacent panels so the cores abut and secure the fabric at 3-5' (0.9-1.5 m) intervals with Sikaflex® 11FC or approved adhesive. At roll ends and abutments without overlaps peel back fabric and remove 4'' (10.2 cm) of core then secure overlap. All core joints and terminations must be covered by fabric overlay.

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