STYROFOAMâ„¢ Brand DURAMATEâ„¢ Plus Insulation has proprietary extra-tough plastic film on both sides, making it Dow's strongest extruded polystyrene foam insulated sheathing. The very tough, durable facers help the insulation stand up to the rigors of shipping and reduce damage on the job site. STYROFOAMâ„¢ Brand DURAMATEâ„¢ Plus Insulation is particularly suitable for residential wall applications where the foam sheathing is fastened to frame walls.
Building Code Compliance
Meets IBC/IRC requirements for foam plastic insulation. See ESR-2142, BOCA-ES RR 21-02, ICBO-ES ER-2257. UL Classified, see Classification Certificate D369. Calif. Std. Reg. # CA T064. Florida Building Code FL 3835.
Related Information
STYROFOAM™ DURAMATE™ Plus Extruded Polystyrene Insulation Product Information  (51KB PDF)
Existing Walls – Installing STYROFOAM™ Residing Board, Residential Sheathing, Tongue & Groove, DURAMATE™ Plus, TUFF-R™, Super TUFF-R™ or STURDY-R™
Foam Over OSB – Installing STYROFOAM™ Residential Sheathing, Tongue & Groove, DURAMATE™ Plus, TUFF-R™, Super TUFF-R™, THERMAX™ or STURDY-R™
Foam Over Studs – Installing STYROFOAM™ Residential Sheathing, Tongue & Groove, DURAMATE™ Plus, TUFF-R™, Super TUFF-R™, THERMAX™ or STURDY-R™
Foam Over Studs – Installing STYROFOAM™ Residential Sheathing, Tongue & Groove, Square Edge, DURAMATE™ Plus, TUFF-R™, Super TUFF-R™ or THERMAX™ for use as a Water-Resistive Barrier
Extra-tough plastic film facers make STYROFOAMâ„¢ Brand DURAMATEâ„¢ Plus Insulation Dow's strongest extruded polystyrene foam insulated sheathing, helping reduce shipping and job site damage.
| Nominal Board Thickness, in | R-Value(1) | Board Size, ft | Edge Treatment | Min Compressive Strength(2), psi |
| .5 | 3.0 | 4 x 8 / 4 x 9 | Square Edge | 15 |
|
(1) R means resistance to heat flow. The higher the R-value, the greater the insulating power. R-values are expressed in ft2 • h•°F/Btu. RSI values are expressed in m2 °C/W. R-value determined by ASTM C518. (2) Vertical compressive strength is measured at 10% deformation or at yield, whichever occurs first. |
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