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Registered
Join Date: Dec 2002
Location: Dahlonega , Georgia
Posts: 15,221
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Quote:
Originally Posted by masraum
I live in Houston, roughly the same climate as South Florida. My attic gets hotter than hell in the summer, and brings the temp of the house up. If I could insulate my roof so that the attic doesn't get as hot, that would help. That means that the foam would be useful.
I'd heard that the reflective insulation under the roof can overheat the asphalt, but not the spray on foam, but it could be.
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I agree the idea is to keep the attic space cooler. Both vendors at the show stated the attic generally will get no hotter than 85 degrees at the height of summer. If true that is a drastic change from normal 100-110 plus. I don't think the foam is reflective it just insulates but I'm sure some heat goes back into the shingles. But in Florida a good roof shingle probably lives about 15 years so I don't think the addition of foam insulation is going to make a drastic change on longevity. I'm going to call my power company to see what they have to say and to find out what rebates are available from them.
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2002 Boxster S . Arctic silver + black top/int. Jake Raby 3.6 SS engine " the beast ". GT3 front bumper, GT3 side skirts and GT3 TEK rear diffuser. 1999 996 C4 coupe black/grey with FSI 3.8 engine . Rear diffuser , front spoiler lip with ducktail spoiler .
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