Corevo Block WR is a sandwich panel made of an extruded polystyrene foam core, indigo color, coupled with one or two OSB wood supports, spruce, pine or other types of wood 9 or 12 mm thick. The insulating boards inside declare values of resistance to compression ≥ 200 kPa, ≥ 250 kPa or ≥ 300 kPa, depending on the thickness. The standard sandwich dimensions are 1200x2400 or 1200x2500 mm, while the thickness varies from 20 to 180 mm. The coupled panel is available in three different surface finishes: straight edges, shiplap edges, tongue and groove edges. The insulation material present in Corevo Block WR has a fire classification EUROCLASS E according to the European standard EN 13501- 1.