Attics - Insulating Existing Occupied Attic Space
Dow insulation products help improve the comfort and energy efficiency of rooms in finished attics. But they do much more than that. For example, water vapor can condense on cool surfaces of an uninsulated roof assembly, which can contribute to mold growth, mildew damage, odors and wood rot. Wood framing can cause thermal shorts and heat loss through the ceiling and walls which, in turn, can cause ice dams in the winter, water backups and leakage inside the home. Adding a layer of STYROFOAM™ extruded polystyrene or polyisocyanurate insulation helps reduce the potential for condensation and its associated problems.
There is a Dow insulation solution for every Attic application:
| My project or needs are: |
Recommended Product Solution |
Installation Instructions/Considerations |
Building Code Compliance |
| Improving the comfort and energy efficiency of an existing occupied attic room by insulating the ceiling and walls. |
STYROFOAM Square Edge |
N/A |
Complies with ASTM C578 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. |
| STYROFOAM Tongue & Groove |
N/A |
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. |
| STURDY-R™ |
N/A |
Complies with ASTM C1289 Type II, Class 2. Meets IBC/IRC requirements for foam plastic insulation. NES NER 540. |
