Is It OK To Install A Metal Roof Directly On Top Of The Subroof?

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Fred Jones Profile
Fred Jones answered
In most flyers and information I have seen on metal and fiberglass type roofing materials, they recommend that you use tar paper along with 1" wood strips to give a gap so that moisture can escape and provide an additional area of insulation (dead air space). You may want to check on the manufacturers website to see what they recommend and then ask them to validate why they recommend whatever it is.
thanked the writer.
Penny Kay
Penny Kay commented
absolutely fdjones! because if you do not install that metal roof properly it voids the warranty!
Kimberly Seber Profile
Kimberly Seber answered
No you need to put down felt paper {tar paper}first then put down the metal. If not you will get water condensation between the sub-roof and the metal. My hubby is a roofer and that's what he said.

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