Guest User
8/2/2016
will dull black metal absorb more heat in summer than shiney black? advantages vs disadvantages with each??
David Stermer
8/2/2016
Hi Dave, Thanks for your question about metal roofing. My understanding is that the gloss level has a minor effect on the solar reflectance. Much more important are the pigments that are used in the paint. A matte finish reflects practically the same amount of solar energy as a glossy finish, it is just diffuse - going in all directions. A glossy finish reflects the solar energy in an aligned fashion. The gloss level is primarily an aesthetic quality. Regards, David

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