White roofs are greatest, reflecting from sixty to 90 p.c of sunlight, in accordance with the Office of Vitality. But you also can buy a "great coloured" roof: a darker roof that employs specialized pigments that mirror about 30 to sixty % of daylight. (Test the DOE’s Power Saver page https://images.google.com/url?q=https://www.advancedroofing.biz/location/