Today's technical report
Cool Roofs "Cool Roofs" are defined as coverings and roofs characterized by high capacity to reflect incident solar radiation and, at the same time, to emit infrared heat energy. They can provide an effective solution to the problem of overheating in summer of individual buildings and large urban areas.
A "cool roof", has a roof identified by a high albedo value, that is, the ability to reflect solar incident radiation, combined with a high infrared emission, which allows the surface the return to the atmosphere the majority of the absorbed solar radiations. In practice, a cool roof can be obtained by applying to the surface of the cover a layer of very lightcoloured
outer surface finish, preferably white with non-metallic material characteristics. A type of
coverage with similar properties can provide a solution to both the problem of overheating in summer, with its negative effects on thermoclimatic welfare; related to the urban island problem, which causes an increase in temperature than the surrounding countryside during summer...