Ventilation ducts in exterior walls
I'll need some form of duct to get fresh outside air to my ERV and another to dump the exhaust..
I'm building with double stud walls insulated to r40 whole wall. The ERV will be in the basement. I have a place where I can in effect move the walls inward so the duct will be outside the insulation as it crosses the sub floor. Is there any reason to use insulated duct? Would a rectangular duct made of fiberglass "duct board" work? Any reason to not use galvanized steel 'sheet metal' duct sections?
Posted Fri, 03/22/2013 - 22:59
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