BackPage Primer from Environmental Building News
January 1, 2008

Solar Reflectance Index and Cool Roofs

It’s no surprise that light-colored, reflective surfaces heat up less in the sun. That translates into less solar-generated cooling loads for buildings with white, reflective roofs. It can also mean lower ambient temperatures outside those buildings, because dark roofs and pavement heat the outdoor air, contributing to the “urban heat island” effect.


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