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I thought that in order for foil surfaces to reflect heat, they need an air space 3/4" - 1" and that the foil must face the source of heat (in…
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Recent Q&A
How does foil facing on attic side of roof sheathing reduce attic heat gain?
I thought that in order for foil surfaces to reflect heat, they need an air space 3/4" - 1" and that the foil must face the source of heat (in…