Metal standing-seam hot roof
Hi I’m building a new home for our family and wanted to run our roof design by you as my concern is moisture/ condensation. Essentially we have 2×12 members on a low-sloped 2 5/8″ over 12 large 3500 square foot roof. I’m planning on insulating with 7″ of closed cell (More if recommended) and no vapor barrier because of closed cell not needing it. The roof deck will be covered with Ice and Water HT and then have a standing seam metal roof installed on top of the ice and water. We are located in Massachusetts. One debate is do i use CDX , OSB Standard or advantech. Second is with closed cell it cant dry in would we have condensation or moisture issues on the roof deck? Would this be the recommended installation? I appreciate any advice.
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