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i am planning to install metal shingles after tear down on our 30 year old gambrel style house. my question is what goes on top of the sheating(plywood) before installing the metal shingles? i have been looking at a product by GRACE INDUSTRIES called ULTRA. will this work?. in addition the only venting is at either end of the structure. do i have to install roof vents.
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I am a believer in good ventilation. www.airvent.com is a great source of information on what that entails. However, your goal should be to continuously "bathe" the entire underside of the roof deck with fresh air.
Underlayment must be determined based upon local code requirements and manufacturer instructions.
5/18/2009
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5/21/2009
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