Been told that to insulate between the joists under a metal roof, the metal
must first be covered with foam either sprayed on or in sheets and then
fiberglass insulation under that. Another person told me that there must be
minimum one inch air space between metal and fiberglass and no foam. What is
proper method for doing this? Joists are 2x6 with 1x6 furring strips a foot
apart and metal screwed to furring strips. Soffits and peak well ventilated.
Because the area under the roof is going to be insulated, drywall, occupied.
The two differing opinions came from a contractor and from a home inspector.
Of course that in itself doesn't mean either one was qualified to speak
authoritatively on the subject.
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