On sunny summer days, the air in your attic may get very hot. Heat from the attic moves through the ceiling into your home. If your home does not have an attic, the heat travels directly from the roof into the living spaces. Each of the four methods can be used alone or with the others to keep heat out of your home. Light-Colored Roofs Dark colors absorb heat.
Light colors reflect heat.
You can take advantage, of these facts by choosing the color of your roof. When you install a new roof, choose light-colored roofing material. Light-colored composition shingles and metal roofs are good choices for sloped roofs. Many materials for flat roofs also come in light colors. If your flat roof doesn't need to be replaced, you could apply a light-colored coating.