There are 2 two types of materials for low-slope roofing systems on homes – single-ply materials and reflective coatings. Single-ply materials are made of large sheets of pre-constructed roofing fastened together over the old roof and sealed at the seams. Reflective coatings are installed or applied over an existing clean, leak-free roof surface using rollers, sprayers, or brushes.
There are other materials available for sloped roofs in clay or concrete tiles. They stay cool by using certain pigments that reflect the sun’s infrared heat. There aren’t asphalt shingles or pre-coated metal roofing materials available in cool versions right now.
You can visit the ENERGY STAR® Website for a comprehensive list of cool roofing system products and manufacturers at www.energystar.gov.