Guest User
12/18/2008
I'm building a 3100sq. ft. home now with a 12/12 Roof over the vast majority of the house. The roof is chopped up a bit with different roof lines but the vaulted celings and 1/2 of the home is 12/12. I'm thinking about using open cell foam to insulate the entire house. What should I do about the roof? Would it be ok to just use roof felt as my base and then apply the metal roof or should I use some other insulation or barrier between the felt and metal roofing?
Todd Miller
Classic Products, Inc.
12/18/2008
Most products are intended for installation over underlayment and decking. Additional insulation is not necessary but could be an option with some products.
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