DELTA®-FL is a dimpled, heavy-duty, plastic membrane for concrete and slab-on-grade floors that helps to keep moisture out of basements by providing a reliable capillary break and vapor barrier. The air gap allows the water vapor pressure above and below the concrete slab to equalize, and prevents moisture from migrating further inward, providing a thermal break to increase basement comfort.


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Dörken Systems Inc.
4655 Delta Way, Beamsville, ON L0R 1B4, Canada

Phone: +1 (833) 611-0995
Tech Support: 
+1 (888) 433-5824
Fax: +1 (905) 563-5582

DELTA® is a registered trademark of Ewald Dörken AG, Herdecke, Germany.


DELTA®-DRAIN is a highly effective drainboard with an HDPE drainage core that allows incoming water to freely drain to the footing perimeter that controls the flow of below-grade water. Its high water-flow capacity ensures effective drainage. This product is suitable for almost any application in residential and light commercial construction.

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DELTA®-MS protects your foundation and reputation, for years to come.

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Keep basements dry, and homeowners happy. Permanently.

DELTA®-MS: Your first step in building a strong foundation.

No delays, no basement leaks, no call-backs. DELTA®-MS delivers superior performance, drainage, and protection, resulting in a quality home that’s made to last, and keeps your reputation going strong.

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Cost effective from the ground up

Durability from the ground up

DELTA®-MS exceeds code requirements, stops leaks, and keeps basements dry.  A co-extruded product, DELTA®-MS is made of 60% recycled and 40% new materials; the use of virgin HDPE outside layers makes it highly durable.

The exclusive design of the DELTA®-MS protection system uses a vacuum-formed dimple pattern to create an air gap between the membrane and the foundation, allowing any incidental water getting past the dimpled membrane to flow freely to the perimeter footing drain.

Install DELTA®-MS in any kind of weather without the protective gear required for asphalt sprays and without having to wait for the concrete to completely cure before you start, for faster installation and better protection.

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DELTA®-FOOTING BARRIER acts as a physical barrier between the footing and the foundation wall, resisting the capillary wicking of water and upward migration of moisture from the footings into the foundation wall, also known as rising damp.

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Delays, leaks, call-backs – these factors can not only affect your bottom line but also damage your reputation as a builder. Homeowners deserve and expect a dry basement. And dry basements ultimately sell more homes. DELTA®-MS delivers value right from the start, keeping foundations dry and your reputation going strong.

From planning to application, DELTA®-MS is the easy and cost-effective foundation protection solution.

Experts in Below-grade Moisture Protection

Basements were never intended to be lived in. In the old days, we called them cellars. We stored vegetables and coal and wood in them. They smelled damp… they were damp. Now we put bedrooms, entertainment centers, and nurseries in them. We began to live READ MORE


Building knowledge expert Gord Cooke navigates a discussion on below-grade building science to help you build better basements and find ways to correct existing moisture issues. Viewers also witness a unique, onsite installation journey and will be joined by Terra View Custom Homes President David Brix, who will provide a practical point of view from a contractor’s perspective.

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Basements and crawl spaces need to be well protected with durable below-grade products that help keep heat and energy from escaping, while keeping moisture away. Mark LaLiberte, in partnership with the Energy & Environmental Building Alliance (EEBA), covers the requirements needed to build energy-efficient below-grade spaces.

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Foundations, Keeping Your Bottom Dry with Dr. John Straube digs into water management practices for foundations and below-grade structures. Learn basic water management system types, strategies for appropriate material selection, how to evaluate project constraints, and more.

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Protection from the ground up