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TrueFoam Insulation Solutions
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Foundation Plus / Sheathing Plus

Efficiently meets a range of different exterior insulation challenges both below and above grade
The versatility of Truefoam Foundation Plus/Sheathing Plus makes it a solid choice for new construction and home improvement applications. Foundation Plus/Sheathing combines high thermal performance and resistance to moisture with economy and ease of installation.

Foundation Plus/Sheathing is made from high density Truefoam Type 2 expanded polystyrene (EPS), and serves both as insulation and exterior Sheathing material.

Because EPS is breathable, Foundation Plus/Sheathing avoids the problems of trapped moisture, condensation and dry rot that can arise with non-breathable materials. Its compressive strength  moisture resistance and excellent durability, it is an excellent choice for use under concrete slabs and on exterior foundation walls.

Foundation Plus/Sheathing is available in 2' x 8' sheets with standard thicknesses ranging from 1" to 2 ". (Other thicknesses are available by special order.)

Installation is very straightforward - no special tools or techniques are involved. For basement use, Foundation Plus/Sheathing is applied directly against the exterior concrete. It can be attached to the concrete with insulation adhesive, or simply nailed to the sill plate or joist header.

For new construction above grade, Foundation Plus/Sheathing is simply attached to studs with 1/2" head galvanized nails. Corners, windows and doors are easily trimmed out. Foundation Plus/Sheathing is compatible with any type of exterior finish material.

In home improvement applications, Foundation Plus/Sheathing is installed directly over the existing building face, and finished with new siding or brick.

Foundation Plus/Sheathing is manufactured to conform to national industry standards, and is certified for in-ground applications. It is part of an integrated system of cost effective, versatile, environmentally responsible Truefoam products designed to reduce your heating costs and make life more comfortable.

Foundation Plus/Sheathing is part of an integrated system of Truefoam insulation products designed for cost effectiveness, durability and versatility. Truefoam insulation products can substantially reduce heating costs while protecting the integrity and long-term comfort of your home.

Download brochure (pdf)

Foundation Plus / Sheathing Plus animation

Foundation Plus TYPE 2 - Data Sheet (pdf)


Our product is white but your building will be green Did you know that EPS has always been CFC and HCFC free?