Samir Ibrahim: White Roofs, Green Myth?
Huffington Post - almost 4 years
White, or reflective, roofs have been in use for the past 15 years. Commonly referred to as "cool roofing," it has received a stamp of approval from the state of California, which has adopted its use in its building codes. It has become a LEED (Leadership in Energy and Environmental Design) standard of the U.S. Green Building Council, and has been mandated by government officials in Chicago, New York, Seattle and Philadelphia.
There is just one problem: The popularity of white reflective roofing, especially in colder climates, is based on sloppy science and good marketing.
From LEED, the Cool Roof Rating Council and ENERGY STAR program, all the way up to the U.S. Department of Energy, there is widespread belief that white reflective roofing systems, even on buildings in northern cities like New York and Chicago, are more efficient and more cost-effective than dark roofing, and that these systems also reduce global warming and the "heat island effect," in which dark-color
Huffington Post article