Recycled barn home - vented cathedral ceiling?
Zone 6A NE Pennsylvania. In the design stage of building a home from a restored barn frame. Ceiling will naturally be cathedral the roof system is a complete straight shot from the eves to top ridge. I would like to use recycled poly iso - if there is a better type please suggest. Start with a 1" air space between the 7" of poly iso and sheathing using "sticks". Poly iso would be placed between the 2x12 rafters. Then a 1-2" layer of closed cell spray foam bringing the R value to 49 or above.
I would then like to install brown board (wood that was originally on the roof to begin with) directly to the under side of the rafters creating the ceiling. Would this be an acceptable method of creating a vented roof system? Suggestions? Thanks for your time.
Posted Feb 22, 2013 10:21 PM ET
Edited Feb 22, 2013 11:03 PM ET
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