White roofs versus black roofs

By absorbing less sunlight than either green or black roofs, white. These before-and-after photographs of a BigLots box store shows the striking difference a reflective roof can make. The white spray-on coating produced a . A white roof is painted with solar reflective white coating and reflects up to of sunlight (as opposed to traditional black roofs which reflect only ). In fact, in some areas, there is a greater than a six-hour difference between . It started with an article on a study out of Berkeley Lab in California, which concluded that white roofs outperformed black roofs economically as . Tests have proven white roof coatings or cool roof coatings compared to un-coate black rooftops provide building owners with significant . BLACK VS WHITE ROOFING MEMBRANES.

The majority of elastomeric/plastomeric single-ply membranes used in the United States are black, or more . Well, no argument here about traditional black roofs — they're a. But that white versus green roof proclamation really raises our eyebrows.