BS EN 13165. Thermal insulation products for buildings. Factory made rigid polyurethane foam (PU) products. Specification Thermal insulating materials, Thermal insulation, Construction materials, Buildings, Polyurethane, Foamed plastics, Foams, Polymers, Boards, Rigid structures, Reinforced materials, Thermal properties of materials, Thermal conductivity, Thermal resistance, Thermal testing, Conformity, Quality control, Marking