A panel for the construction of roofing is described, which includes two substantially opposite surfaces and a plurality of elongated recesses formed on at least one of the two opposite surfaces of the panel. The panel is made of a thermoplastic material, preferably polycarbonate. Moreover, a roofing arrangement for structures formed by means of one or more panels is described, wherein the surface of the panel which includes the plurality of elongated recesses forms the inner surface of the roofing arrangement. The panel is particularly useful for the construction of roofing arrangements for structures designed for plant cultivation and/or plant protection, such as greenhouses, nurseries, covered gardens, and the like.
