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We are putting a standing seam roof on over our existing asphalt roof. We live in Ga, on a heavily wooded lot with lots of shade for the house. My husband insists we have to use a white roof or our cooling costs will dramatically increase. I want a darker color to better blend with our neighborhood and I just like the look better. Will a dark metal roof make our house hotter? We have an attic space and only get direct sun in the morning hours. Thanks!
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Many people think that metal roofing is "hot" when in fact it is not.
Metal roofing does not retain heat the way that other materials do -- it can gather some heat but then it sheds it quickly once the sun goes behind a cloud or is obscured by shadows or once a gentle wind blows.
There are ways to make metal roofs even cooler though. A good website is www.coolmetalroofing.com
Certainly, lighter colors are more reflective and that helps. However, many metal roofing manufacturers now offer dark colors with reflective pigments which reflect heat even in dark colors.
Additionally, good attic ventilation plays a major role in keeping attics cool. Metal roofs typically can be used and installed in ways which promote ventilation. Some metal roofs even have integral airspaces between the metal and the roof deck and that is very helpful as well.
As a manufacturer of metal roofing, it is not unusual for me to hear from customers that their a/c costs went down after the metal was installed.
1/8/2005
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