DuPont™ Styrofoam™ Brand Square Edge Extruded Polystyrene Foam Insulation
Commercial | Residential | Multifamily | Wall
A proven solution for wet environments
Ideal for use in attics, foundations, and crawl spaces, Styrofoam™ Brand Square Edge Insulation is an extruded polystyrene foam (XPS) insulation that resists water pickup – a characteristic that allows it to keep high R-value.
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DuPont™ Styrofoam™ Brand Square Edge Extruded Polystyrene Foam Insulation
Styrofoam™ Brand Square Edge Insulation* is an extruded polystyrene foam (XPS) insulation board that meets the needs of the commercial foundation and building floor slab market and can also be used for attics, foundations/slabs and crawl spaces in residential applications. With more than 60 years of proven performance in wet environments, the closed-cell structure of Styrofoam™ Brand Square Edge Extruded Polystyrene Foam Insulation resists water pickup, enabling it to retain a high R-value** over time – a necessary property in wet, below-grade commercial foundation applications.
* Styrofoam™ Brand Square Edge Insulation is a former product of The Dow Chemical Company
Features & benefits
| Feature | Benefit |
|---|---|
| Excellent adhesion |
|
| Bonds dry, treated, damp and frozen surfaces |
|
Physical properties
| Method | Unit | Value | |
|---|---|---|---|
| Thermal Resistance per inch @ 75°F mean temp. @ 40°F mean temp. @ 25°F mean temp.1 | ASTM C518 | ft2 •h•°F/Btu, R-value, min. | 5.0 |
| - | - | 5.4 | |
| - | - | 5.6 | |
| Compressive Strength2 | ASTM D1621 | psi, min. | 25 |
| Water Absorption | ASTM C272 | % by volume, max. | 0.3 |
| Water Vapor Permeance3 | ASTM E96 | perm, max | 1.5 |
| Maximum Use Temperature | - | °F | 165 |
| Coefficient of Linear Thermal Expansion | ASTM D696 | in/in•°F | 3.5 x 10-5 |
| Flexural Strength | ASTM C203 | psi, min. | 50 |
1 R-values are consistent with criteria of ASTM C578 and the requirements of the FTC R-value rule (16 CFR Part 460).
2 Vertical compressive strength is measured at 10 percent deformation or at yield, whichever occurs first.
3 Based on 1” thickness.
Available sizes
| Thickness (in) | Board Feet per Pallet | Bundles per Unit | Pieces per Bundle | Pieces per Pallet | ||
|---|---|---|---|---|---|---|
| 1 x 48 x 96 | 1 | 3072 | 8 | 12 | 96 | |
| 1.5 x 48 x 96 | 1.5 | 3072 | 8 | 8 | 64 | |
| 2 x 48 x 96 | 2 | 3072 | 8 | 6 | 48 | |
| 2.5 x 48 x 96 | 2.5 | 2800 | 7 | 5 | 35 | |
| 3 x 48 x 96 | 3 | 3072 | 8 | 4 | 32 | |
| 3.5 x 48 x 96 | 3.5 | 2688 | 8 | 3 | 24 | |
| 4 x 48 x 96 | 4 | 3072 | 8 | 3 | 24 |
Technical resources
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