Guest User
4/2/2007
We are planning to intall a metal roof (shake shingle shape) over 30# roofing felt over a 6 mil. poly vapor barrier over 3/4" exterior plywood sheathing. A friend of mine said we would be asking for condensation problems by installing the 6 mil. vapor barrier. Is this assumption correct? Thank you in advance for your answer. Bill C. My e-mail address is: [email protected]
Todd Miller
Isaiah Industries, Inc.
4/7/2007
Generally the vapor barrier would be behind your ceilings. You may or may not be causing a problem with what you described. If you have very good attic ventilation you may be okay but, if not, this could cause troubles. Call me at 1-800-543-8938 ext 201 if you would like to discuss.
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