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Attics - Adding Usable Living Space

Turn that unoccupied, unfinished attic space into usable living space. Dow insulation products help improve the comfort and energy efficiency of rooms in 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
Create a comfortable and energy efficient living space in an unfinished, unoccupied attic by insulating the ceilings 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.
STYROFOAM Residential Sheathing N/A 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 DURAMATE™ Plus N/A Meets IBC/IRC requirements for foam plastic insulation. See NES NER 699, Und. Lab. Inc.® Classified, see Classification Certificate U589.
TUFF-R™ N/A Complies with ASTM C1289 Type I, Class 1. Meets IBC/IRC requirements for foam plastic insulation. See NES NER 616.
Super TUFF-R N/A Complies with ASTM C1289 Type I, Class 1. Meets IBC/IRC requirements for foam plastic insulation. See NES NER 616.
THERMAX™ Sheathing N/A Complies with ASTM C 1289 Type I, Class 2. Meets IBC/IRC requirements for foam plastic insulation. See NES NER 681.