I had a garage that heated up to 120 degrees in the summer. I insulated the ceiling with styrofoam up against the UPPER
attic rafters. This allowed the heat to rise UP and then
OUT of the garage through a roof-turbine vent. After insulating the walls, this garage rarely went above 82 degrees
during hot summer days even with NO AIR CONDITIONER. Another method of accomplishing this is to simply paint
the roof white. I found a way to do this at a cost of less than 20 dollars. You can read about this on the
website "builditsolar.com" here is the link .....
http://www.builditsolar.com/Projects/Cooling/WhiteRoofExperiment/WhiteRoof.htm
These methods work VERY well and have minimum cost. The attached picture shows attaching styrofoam sheets
to the upper attic rafters in process (not completed).
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