The Los Angeles City Council has voted unanimously to require “cool roofs” for all new and refurbished homes, becoming the first major U.S. city to do so. “Cool roofs” incorporate light- and heat-reflecting building materials, which can lower the surface temperature of the roof by up to 50 degrees F on a hot day, according to Climate
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cool roofs
Check out Google Earth – the ‘view from above’ of your favorite American city. And look at the roofs of the office buildings, warehouses, shopping centers, and even the homes. Most of them are probably pretty dark in color – and this means they heat up a lot when the weather is warm – up to 50 degrees hotter than light roofs. All of those dark roofs mean that as a nation
Using lighter colors for rooftops and streets worldwide could help reduce global temperatures and offset the heat from as much as two years of global greenhouse gas emissions, according to a new study. After examining the results from a global land surface model from NASA Goddard Space Flight Center, researchers at the Lawrence Berkeley National Laboratory