Dorken Delta-MS Drain Board


Protecting your foundations from water and moisture is critical. DELTA-MS is a dimpled membrane that uses an exclusive Air-gap Technology to ensure your basements stay dry and last longer.

The vacuum-formed dimpled pattern creates an air gap between the membrane and the foundation, allowing water to drain. By keeping water away from the foundation wall, DELTA®-MS is able to keep basements permanently dry and protected. Unlike sprays, which crack when concrete walls crack, it bridges cracks so no water intrusions can occur. This dampproofing helps ensure more comfortable and healthier living spaces for your homeowners; better efficiency and durability for your buildings; and fewer warranty claims and call-backs for you.

Unlike sprays, DELTA-MS doesn’t require specialized safety equipment and you don’t have to wait around for the concrete to cure or the fumes to dissipate so installation can be faster, easier, and more cost effective. The extensive DELTA Academy Certified-Installer Program helps ensure materials are properly applied, allowing you to provide an industry-leading warranty.

Available in a range of sizes to accommodate any foundation wall.


  • Dimpled membrane made from high-density polyethylene (HDPE)
  • A co-extruded product – 60% recycled HDPE and 40% virgin HDPE
  • Virgin HDPE outside layer and recycled HDPE core makes it the most durable dimpled membrane on the market
  • Vacuum-formed dimpled pattern allows incidental water to flow into footing drain
  • Available in many sizes for easy installation on various foundation heights


  • Impermeable to water and water vapour, keeping basements dry
  • Meets all building code requirements in the USA and Canada
  • Two lines of defence against water intrusion: dimpled membrane provides capillary break; air-gap allows incidental water to freely drain by gravity
  • Eliminates interior dampness and musty odours
  • Reliably bridges foundation cracks and deflects soil moisture, unlike asphaltic sprays
  • Continues to function even if foundation shifts or cracks
  • No unpleasant chemical odours or harmful VOCs
  • Resists damage from backfill, like rocks and debris
  • Installs in all types of weather
  • Declare Label: Red List Free

Additional information


3' 6" x 65.6' ROLL, 5' x 65.6' ROLL, 6' 6" x 65.6' ROLL, 6' x 65.6' ROLL, 7' x 65.6' ROLL, 8' x 65.6' ROLL, 9' 10" x 65.6' ROLL


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