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Drainage foam is a high-performance, rigid insulation consisting of a superior closed-cell, lightweight and resilient expanded polystyrene (EPS) with an advanced filtration facer. The core of drainage foam has 1/4" x 1/4" drainage channels every 2" O.C. and is the same high-quality as
our brand insulations.  Drainage foam has excellent dimensional stability, compressive strength and drainage capacity properties.

Drainage foam is designed to be applied as an exterior foundation insulation and drainage board. Drainage foam aids in reducing hydrostatic pressure on the foundation from the adjacent backfill material while protecting the underlying damp proofing or waterproofing.



  • Long-Term Effectiveness. Drainage foam facer prevents accumulation of the backfill material within the drainage channels unlike some unfaced grooved boards.
  • Added Protection. Drainage foam provides protection to the waterproofing or damp-proofing and to the foundation during backfill installation and from any post-construction soil freeze-thaw cycling and settlement.
  • Stable R-Value. Customers are well served knowing the product’s thermal properties will remain stable over the entire service-life.
  • Cost Effective. Drainage foam is typically less expensive than other below-grade or perimeter insulations.
  • Environmentally Friendly. It contains no formaldehyde or ozone-depleting CFC’s or HCFC’s, may contain recycled material and the foam core is 100% recyclable.
  • Proven Performance. The same fundamental chemistry has been in use since the mid-1950s so the actual performance of the foam core is well known.
  • Water Resistance. Drainage foam insulation


Installation Recommendations:

1. Install Drainage foam directly over damp-proofing or waterproofing. Drainage foam can be attached with an Expanded Polystyrene (EPS) compatible adhesive, mechanical fasteners or held in place by the backfill.

2. Tightly butt insulation joints to minimize dirt infiltration.

3. Seal the top edge of the drainage foam with either caulking or a J-strip to minimize water and mud infiltration.




Design & Estimating

Don't see what you need?  Through the use of CAD design and engineered computer cut construction techniques, we are able to produce virtually any design or style of Expanded Polystyrene (EPS) Drainage Foam.

Call us today! 614-820-0340. We will provide you with a FREE quote and answer any questions

Category : - EPS Foam

Huntington Solutions  |  Trimtec Systems •  E-mail:

Ohio Office:

2455 Harrisburg Pike., Grove City, Ohio 43123 • 

Phone 614-820-0340 • Fax 614-820-0341 •

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