Applications Products Resources and Tools Energy Savings Center Literature  
Printer-Friendly View

Ceilings - Cathedral/Vaulted

Stop energy costs from going through the roof.

Cathedral/vaulted ceilings require good insulation performance in a small amount of space. STYROFOAM™ extruded polystyrene insulation and polyisocyanurate insulation are the ideal way to reduce heat loss and moisture problems in cathedral/vaulted ceilings.

There's a Dow insulation product that's right for every cathedral/vaulted ceiling application:
My project or needs are: Recommended Product Solution Installation Instructions/Considerations Building Code Compliance
Exposed beams on inside of cathedral ceiling with rigid insulation on top of exposed tongue and groove roof decking. STYROFOAM Square Edge View Installation Instructions 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 WALLMATE™ View Installation Instructions Complies with ASTM C578 Type X. 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.
Gypsum board exposed on inside of cathedral ceiling with rigid insulation between gypsum and wood framing. STYROFOAM Square Edge View Installation Instructions 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 View Installation Instructions 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 View Installation Instructions 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 View Installation Instructions Meets IBC/IRC requirements for foam plastic insulation. See NES NER 699, Und. Lab. Inc.® Classified, see Classification Certificate U589.
TUFF-R™ View Installation Instructions Complies with ASTM C1289 Type I, Class 1. Meets IBC/IRC requirements for foam plastic insulation. See NES NER 616.
Super TUFF-R View Installation Instructions 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 Complies with ASTM C 1289 Type I, Class 2. Meets IBC/IRC requirements for foam plastic insulation. See NES NER 681.