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Ryland · 05-28-11, 09:08 PM

Unless your roof is black you will not dump as much heat in to the sky as a solar hot water panel would with it's black face, because you are trying to radiate that heat out in to the sky so the darker surface will work better.

05-28-11, 09:08 PM	#4
Ryland Master EcoRenovator Join Date: Mar 2009 Location: Western Wisconsin. Posts: 913 Thanks: 127 Thanked 82 Times in 71 Posts	Unless your roof is black you will not dump as much heat in to the sky as a solar hot water panel would with it's black face, because you are trying to radiate that heat out in to the sky so the darker surface will work better.