I live in zone 3 central west virginia, and designed my own home,construction of which is currently under way. I have a question about the cathedral ceiling i am building which will basically be half of the house, its a monopitch design details are (from the outside in)- metal roofing, 30 lb asphalt building paper ,1/2 inch cdx, 2 by 12 rafters on 2 ft centers ,2 inch continuous soffit to ridge vent channels ( a ridgid foam pre-made), r-38 kraft faced fiberglass in the 9.5 remaining cavity, Now, for the question, my ceiling is going to be 1 by 6 t+g pine, my initial instinct is to install drywall taped mudded and painted beneath my t+g pine, however , is there a greener more natural product that i can install other than drywall for a air barrier? plywood? taped at seams with sigma or something, im building on an existing house seat that i just removed an old house from and i hate drywall, i cant help but think that areas that might be prone to slight moisture , temperature differences that drywall might not be the best material. Any and all advice or input is welcomed.
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