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If the house is meant to be a sealed system, then adding a return air vent will pull the hot air from the attic.
Even running the recirculatory fan without the a/c will equalize the house.
You can insulate the roof better without too much mess. There is slow-rise open-cell spray foam that can be squirted through 1" holes in the drywall to insulate the interior.
It will push aside or seal the existing fiberglass batt.
Be careful the soffit->peak ventilation is adequite, or the shingles will fry and/or the plywood rot.
When re-roofing, use a lighter color shingle also.
Last edited by john70t; 01-30-2012 at 09:31 AM..
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