A recent study of New York City's pilot CoolRoofs program in the summer of 2011 found that the white surfaces painted on rooftops reduced peak rooftop temperature by an averages 43 degrees Fahrenheit. The program is an attempt to address the urban heat island effect in order to reduce energy use and greenhouse gas emissions.
"It's the lowest hanging fruit. It's very cheap to do; it's a retro-fit. You don't need a skilled labor force. And you don't have to wait for a roof to be retired," said Gaffin referring to the DIY acrylic method. "So if you really talk about ways in which you brighten urban albedo, this is the fastest, cheapest way to do it."
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