ThermaCal® 2 Specs
ThermaCal® 2 Docs
ThermaCal® 2 Videos
Why ThermaCal® 2?
Perfect for structures with cathedral ceilings, glue lam, post & beam construction and conditioned attic spaces, they help insulate against heat drive into the living space/conditioned space under the roof while serving as a nailable base. In addition, they exhaust excess moisture before it can condense in the deck or roofing system. These panels can be installed on top of structural wood or steel sloped roof decks (Contact GAF for other acceptable decks).
See how this product can help you meet your environmental goals. View sustainability information here.
Reduced Heat Loss
Exclusive tongue-and-groove design minimizes heat loss up through the panel joints
Pre-spaced sheathing eliminates the need for H-clips and allows for sheathing expansion
Unique spacer pattern maximizes airflow ("upventing") and reduces hot spots
Where to buy
Find a GAF distributor near you.