Is thermal mass an issue when reroofing with metal over shingles?
I live in Charleston, S.C. (zone 3) and while I understand the structural considerations of installing a metal roof with purlins over older asphalt shingled roof, how does the thermal properties of the roof come into play on hot summer days?
Can the roof continue to absorb the heat in spite of having reflective panels, and could that heat be lost to the air space created by purlins or would it continue to radiate into the attic space?
Posted Mon, 01/20/2014 - 15:33
Edited Tue, 01/21/2014 - 07:07
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