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Hi, 1) Do I need to add a plastic vapor barrier to ceilings (will use blown in insulation) or walls before I install metal panels for a garage interior? The outside walls are wrapped with Tyvek, if that matters. Won't the metal panels act as a vapor barrier? I have read arguments for both sides...

Hi, Looking for your thoughts and advice for my 40 x 60 x 12 high garage, floor pex heating project, in Ohio. The garage is build and I will pour the floor this spring Here are my plans 5" slab thickness Heated with natural gas boiler, 8) 1/2 pex-b oxygen barrier, runs 300' long, on 5' x 10'...