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Exterior Walls - Foam Over Studs (New Construction/Addition)
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| Graphic re-creation of thermal bridging in a typical building wall envelope. |
Wood framing (studs, window and door framing, and headers) makes up about 25% of the wall surface. Insulating only the cavities means 25% of the wall surface is left uninsulated. A continuous layer of STYROFOAM™ extruded polystyrene or polyisocyanurate insulation installed directly over the studs reduces energy loss. And, it can reduce the potential for condensation and resulting moisture problems in your walls.
There's a Dow insulation solution that's right for every Exterior Wall application:
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| My project or needs are: |
Recommended Product Solution |
Installation Instructions/Considerations |
Building Code Compliance |
| Good R-value, reduced air infiltration and excellent moisture resistance. |
STYROFOAM Residential Sheathing |
View Installation Instructions
Foam Over Studs - Installing STYROFOAM Residential Sheathing, STYROFOAM Tongue & Groove, STYROFOAM DURAMATE™ Plus, STYROFOAM Square Edge, TUFF-R™, Super TUFF-R, or THERMAX™ - Installation of Foam Sheathing as a Weather-Resistive barrier |
Meets IBC/IRC requirements for foam plastic insulation. See ICBO-ES ER 2257, BOCA-ES RR 21-02, NES NER 699, Und. Lab. Inc.® Classified, see Classification Certificate D369. |
| STYROFOAM™ Tongue & Groove |
View Installation Instructions
Foam Over Studs - Installing STYROFOAM Residential Sheathing, STYROFOAM Tongue & Groove, STYROFOAM DURAMATE Plus, STYROFOAM Square Edge, TUFF-R, Super TUFF-R, or THERMAX - Installation of Foam Sheathing as a Weather-Resistive barrier |
Complies with ASTM C 578 Type IV. Meets IBC/IRC requirements for foam plastic insulation. See ICBO-ES ER 2257, BOCA-ES RR 21-02, NES NER 699, Und. Lab. Inc.® Classified, see Classification Certificate D369. |
| Good R-value, reduced air infiltration, high durability and excellent moisture resistance. |
STYROFOAM™ DURAMATE Plus |
View Installation Instructions
Foam Over Studs - Installing STYROFOAM Residential Sheathing, STYROFOAM Tongue & Groove, STYROFOAM DURAMATE Plus, STYROFOAM Square Edge, TUFF-R, Super TUFF-R, or THERMAX - Installation of Foam Sheathing as a Weather-Resistive barrier |
Meets IBC/IRC requirements for foam plastic insulation. See NES NER 699, Und. Lab. Inc.® Classified, see Classification Certificate U589. |
| Highest R-value and reduced air infiltration. |
TUFF-R |
View Installation Instructions
Foam Over Studs - Installing STYROFOAM Residential Sheathing, STYROFOAM Tongue & Groove, STYROFOAM DURAMATE Plus, STYROFOAM Square Edge, TUFF-R, Super TUFF-R, or THERMAX - Installation of Foam Sheathing as a Weather-Resistive barrier |
Complies with ASTM C1289 Type I, Class 1. Meets IBC/IRC requirements for foam plastic insulation. See NES NER 616. |
| THERMAX Sheathing |
View Installation Instructions
Foam Over Studs - Installing STYROFOAM Residential Sheathing, STYROFOAM Tongue & Groove, STYROFOAM DURAMATE Plus, STYROFOAM Square Edge, TUFF-R, Super TUFF-R, or THERMAX - Installation of Foam Sheathing as a Weather-Resistive barrier |
Complies with ASTM C 1289 Type I, Class 2. Meets IBC/IRC requirements for foam plastic insulation. See NES NER 681. |
| Highest durability, highest R-value and reduced air infiltration. |
Super TUFF-R |
View Installation Instructions
Foam Over Studs - Installing STYROFOAM Residential Sheathing, STYROFOAM Tongue & Groove, STYROFOAM DURAMATE Plus, STYROFOAM Square Edge, TUFF-R, Super TUFF-R, or THERMAX - Installation of Foam Sheathing as a Weather-Resistive barrier |
Complies with ASTM C1289 Type I, Class 1. Meets IBC/IRC requirements for foam plastic insulation. See NES NER 616. |
| High durability, good R-value and reduced air infiltration. |
STURDY-R™ |
View Installation Instructions |
Complies with ASTM C1289 Type II, Class 2. Meets IBC/IRC requirements for foam plastic insulation. NES NER 540. |
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