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NC-2009 SSc7.2:Heat Island Effect—Roof

Paint grip metal SRI

Our project has paint grip metal roof over the structures. We tried to get the SRI value from the manufacturer but could not. The manufacturer also said that as far as they think, no manufacturer offers SRI information on paint grip metals. Does anyone have any idea about the SRI value for this type of roof? Is there any general assumption that we can make for the galvanized metal roof? If not, any suggestions on how we could go about doing the calculations for this credit?

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Tue, 02/19/2013 - 00:00

Heather, the easiest option would be to exclude this roof area from your credit calcs. I don't have any data to support this, but my guess based on experience with similar products would be that the SRI is too high to support credit compliance. I would not make any general assumption except to exclude it, if in doubt.

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