What is the best way to insulate a flat roof in a garage on the inside?
Question:i was going to strap the ceiling the opposite way the beams run with 1x2 then put plastic then styrofoam. on the outside i was going to put a vent on either side of the garage. not sure if this is the right way? any suggestions would be greatly appreciated. thanks in advance!
Answers:
If you are going to use strapping across the beams, you can just place fiberglass batts up between the rafters. If the garage is heated, make sure that the vapor barrier is towards the heated space.
Make sure your roof will vent is the most important. If you close off circulation, the shingles will be ruined in no time. You may have to install "continuous vent" in the soffit or some type of vent in between each rafter. Also there has to be an exhaust, Just vent in the soffit will not do. There has to be a place where the air can pass through.
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