Moisture problems with Vapor Barrier – Part 2 – Another question
A follow-up question:
Is there a problem having paper backed insulation and a plastic vapor barrier on walls and ceiling? When I observed moisture problems it was not condensed on the paper or plastic, but on the coldest surface i.e. the roof sheathing and Styrofoam air ducts. Some have said the plastic is the problem and the walls/ceiling need to breathe while my architect says install the plastic for air seal and thermal efficiency. Confused! What’s correct?
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