Woodn’t You Prefer Continuous Coverage?
When only wall cavities are insulated, fully one quarter of the wall surface is left uninsulated.† That’s because wood framing – studs, window frames, door frames and headers – makes up 25 percent of the wall surface in typical wood frame construction.
When installed directly over studs or over OSB or other non-insulating sheathing, rigid foam insulation provides continuous coverage and dramatically reduces the potential for condensation and resulting moisture problems inside the wall.
If adding rigid foam over studs or non-insulating sheathing is unfamiliar to you, we suggest visiting the Building Code Resource Center to learn more about ways to maximize the use of rigid foam insulation. Also, be sure to download the detailed installation instructions in this section or contact us with specific questions.
U.S.
| Project Specifications |
Recommended Dow Solutions |
- Insulate with rigid foam insulation
- Good R-value (RSI)
- Excellent moisture resistance
- Reduced air infiltration
|
- Heat-bonded capsheets allow 90º “folding”
- Fanfolded 50 lengths
- Square edge
- Thin 1/4" thickness
- 15 psi
|
BLUECOR™ Insulation
|
- Film facers on both sides
- Square edge and tongue and groove options
- 1/2" – 1" thicknesses
- 15 psi
|
STYROFOAM™ Brand Residential Sheathing
|
- Interlocking fit
- 3/4" – 2" thicknesses
- Three board size options
- 25 psi
|
STYROFOAM™ Brand Tongue and Groove Insulation
|
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Enhanced Installation
|
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- Insulate with rigid foam insulation
- High durability
- Good R-value
- Excellent moisture resistance
- Reduced air infiltration
|
- Dow’s strongest XPS sheathing
- Reinforced plastic film facers on both sides
- Square edge
- 1/2" thickness
- 15 psi
|
STYROFOAM™ Brand DURAMATE™ Plus Insulation
|
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Enhanced Installation
|
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- Insulate with rigid foam insulation
- Highest R-value
- Reduced air infiltration
|
- Glass-fiber-reinforced polyisocyanurate foam core for fire resistance
- Aluminum foil facers
- 1/2" - 2" thicknesses
- Three board size options
- 25 psi
|
THERMAX™ Sheathing
|
- Radiant barrier-quality aluminum foil facers
- 1/2" - 1" thicknesses
- Two board size options
- 25 psi
|
TUFF-R™ Insulation
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Enhanced Installation
|
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- Insulate with rigid foam insulation
- Highest durability
- Highest R-value (RSI)
- Reduced air infiltration
|
- Three-ply poly/aluminum facers for exceptional strength and durability
- 1/2" - 1" thicknesses
- Two board size options
- 25 psi
|
Super TUFF-R™ Insulation
|
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Enhanced Installation
|
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- Lateral wall bracing (intermittent and continuous)
- Transverse load resistance
- Insulate with rigid foam insulation
- Excellent R-value
- Approved water-resistive barrier (with taped joints)
- Excellent moisture resistance
- Reduced air infiltration
|
- Pressure laminated structural member
- High R-value (R-3 at 1/2" and R-5.5 at 1") polyisocyanurate foam core
- BLUE™, non-reflective, resilient exterior surface
- Square edge
- 1/2" and 1" thicknesses
- 20 psi Compressive strength
|
STYROFOAM SIS™ Brand Structural Insulated Sheathing
|
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Enhanced Installation
|
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(1) Consult the label and Material Safety Data Sheet carefully before use.
| Literature |
| Installation Recommendations for WEATHERMATE™ Flashing and WEATHERMATE™ Sill Pan: Rigid Foam Insulation as Weather-Resistive Barrier on a Wood Frame Wall (300KB PDF) |
| Installation Recommendations for WEATHERMATE™ Weather Barrier Solutions: Exceptional Exterior Water Management Solution (717KB PDF) |
| Why You Should Use Insulated Sheathing. (Sales Brochure) (717KB PDF) |
| Installation Instructions |
| Foam Over OSB-Installing STYROFOAM™ Residential Sheathing, Tongue & Groove, DURAMATE™ Plus, TUFF-R™, Super TUFF-R, THERMAX™ |
| Foam Over OSB - Installing STYROFOAM* Residential Sheathing, Tongue & Groove, Square Edge, DURAMATE* Plus, TUFF-R*, Super TUFF-R* or THERMAX* for use as a weather-resistive barrier |
| Foam Over Studs -Installing STYROFOAM™ Residential Sheathing, Tongue & Groove, DURAMATE™ Plus, TUFF-R™, Super TUFF-R, THERMAX™ |
| Foam Over Studs - Installing STYROFOAM* Residential Sheating, 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 |
Learn more about weatherization.
Canada
| Project Specifications |
Recommended Dow Solutions |
- Insulate with rigid foam insulation
- Good R-value (RSI)
- Excellent moisture resistance
- Reduced air infiltration
|
- Choice of board thickness options
- Butt edge and shiplap edge options
- 2' x 8' (600 mm x 2400 mm) boards
|
STYROFOAM™ Brand CLADMATE™ Insulation
|
- Convenient larger 4' x 9' (1200 mm x 2700 mm) boards
- Shiplap edge
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STYROFOAM™ Brand CLADMATE™ XL Insulation
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Enhanced Installation
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(1) Consult the label and Material Safety Data Sheet carefully before use.
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