The New York Times says a white roof on your house “can cost as little as 15 percent more than its dark counterpart” yet “reduce air-conditioning costs by 20 percent or more in hot, sunny weather.” This is because, scientifically speaking, the color white hates the stupid sun and won’t have anything to do with it.
But who believes crazy old newspapers anymore? Here’s a Daily Show clip of Nobel Prize winning Secretary of the U.S. Department of Energy, Steven Chu. (The NYT told us about it). Around the 6:25 mark, he says when you’re re-roofing, make it white: