A Concept XPS panel is an extruded polystyrene board, coated with an enhanced fiberglass-reinforced cement mortar., metal or alumin. It combines the thermal insulation, rigidity, lightness, and ease of work of extruded polystyrene, with the perfection of a prefabricated panel and the compatibility with ceramic placement of a mortar surface, ideal characteristics for a wide variety of applications. Its exclusive combination of fiberglass mesh and mortar coating provides a waterproof surface, especially important in environments with the presence of water.