Problem with water and mold on roof plywood of room over garage, with roof /soffit vents and ducting over fiberglass rafter insulation.
Room over garage has foam insulation in ceiling and 6” fiberglass insulation in 8” thick kneewalls.
Solution discussed was to add foam-in polyurethane in kneewalls and floor beneath them to seal the triangular side spaces from moisture.
Could the kneewalls be sealed as well by using FOAMULAR 2” sheets with “Great Stuff” sealing all the edges on the inside of the kneewalls, and then adding the 6” fiberglass insulation outboard of the FOAMULAR with the unfaced side facing the triangular spaces
Original plan discussed with MARTIN HOLLADAY.
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