The corrugated sheets (wave-shaped sheets) and flat sheets, galvanized, aluzinc-coated, and painted, are used for roof coverings of buildings, pitched roof coverings, canopies, and external surfaces of prefabricated houses. They are utilized in the construction of roofs, parking structures, land demarcation, and delineation of various renovation areas for shops and building construction. These applications extend to various other industrial and construction uses. Alternatively, for the construction of metal roofs, metal tiles (French type) are also used.