Any value to ceiling insulation when constructing a conditioned attic?
I'm ready for insulation in my retrofit project, zone 3 in North Carolina. The building has 1 1/2" of poly foam on the exterior 2x6 walls, which will be filled with cellulose. The roof deck has 3" of poly, the underside will have 6" of open cell foam sprayed onto the underside of the roof deck. My question: The insulation contractor has suggested that I may want to add 6" of cellulose blown in at the ceiling level. I can see some value here preventing sound from migrating between rooms (common walls will be insulated for sound as well), but is there any thermal benefit to be gained here?
Posted Jan 25, 2013 8:37 AM ET
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