EN 1993-7 determines rules on design procedures for factory made, double skin steel faced insulating sandwich panels, which are intended for discontinuous laying of panels in the following applications: a) roofs and roof cladding; b) external walls and wall cladding; c) walls (including partitions) and ceilings within the building envelope. The steel faced materials covered by this European Standard are steel and stainless steel. The insulating core materials covered by this European Standard are rigid polyurethane, expanded polystyrene, extruded polystyrene foam, phenolic foam, cellular glass and mineral wool.