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TOPIC: Insulation Concerns

proper metal roof design/insulation/decking using a 6 1/2" SIP as the ceiling

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If you build a home using 6 1/2" SIP's for walls and ceiling then using the roof as a "shade" for the box (house w/o roof). What would be the optimal set up for the metal roof to try to keep the attic space cool? ex: deck/insulation/etc. The ceiling SIP would allow about an R 26 value, so the attic ventilation could be very aggressive in moving air through the attic space. Any thoughts would be appreciated. Thanks.
Guest User

11/13/2005
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Balanced air flow just like the building code calls for, 50% at the eave and 50% at the ridge. Supply minimum one sf of free air for every 150sf of ceiling area.
Allan Reid
Dura-Loc Roofing Systems, Inc.

11/14/2005
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