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Crawl Space Drainage Matting | 3'11" x 50' (20m) rolls | Free Shipping
Crawl Space Drainage Matting | 3'11" x 50' (20m) rolls | Free Shipping
Crawl Space Drainage Matting | 3'11" x 50' (20m) rolls | Free Shipping

Crawl Space Drainage Matting | 3’11” x 35′ (140 Sq Ft) rolls


This dimpled drainage matting goes underneath the floor vapor barrier, providing additional drainage and significantly extends liner durability.

We have rolls in 6’8”x 50’ and 8’x 50’ but they require special shipping and to call for more information.


SKU: DM4 Categories: , Tag:

Dimpled drainage matting, placed between the vapor barrier and the ground, improves drainage and significantly enhances the durability of the liner.  Think of dimpled drainage matting as a durable sub-floor between the liner and the gravel or dirt crawl space floor.  It's high-density polyethylene (HDPE) composition provides good resistance to water pressure and aids in drainage. The dimples serve to quickly direct water to the footer drainage system, and provide a chamber of air between matting and the surface it is applied to. Drainage matting is composed of recycled materials and is considered a GREEN product. Meets/exceeds ICC-AC114: Acceptance Criteria for Rigid, Polyethylene, Below-grade, Damp proofing, and Wall Waterproofing Material.


  • Length: 3'11" x 35'
  • Area: 140 Sq Ft2
  • Color: gray
  • Thickness: 0.2952"
  • Compression Resistance: 729 lbs/in
  • Stud Height: 0.2968"
  • Low-Temp Flexibility - Remains flexible when less than -22°F

Important Note: For the drainage matting to function as intended, proper installation is necessary. The flat side of the drainage matting should be flush with the vapor barrier, and the dimples should be pointing down against the surface you are covering.

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Additional information

Weight 27.375 lbs
Dimensions 12 × 12 × 50 in

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