This European Standard specifies the requirements for factory made rigid polyurethane foam (PUR) products, with or without rigid or flexible facings or coatings and with or without integral reinforcement, which are used for the thermal insulation of buildings. PUR also includes polyisocyanurate foam (PIR). The products are manufactured in the form of boards. This European Standard also covers the thermal performance of composite panels in which polyurethane rigid foam is the main insulant. This European Standard specifies product characteristics and includes procedures for testing, evaluation of conformity, marking and labelling. Products covered by this European Standard are also used in prefabricated thermal insulation systems and composite panels; the performance of systems incorporating these products is not covered. This European Standard does not specify the required class/level of a given property to be achieved by a product to demonstrate fitness for purpose in a particular application. The classes/levels required for a given application are to be found in regulations or non-conflicting standards. Products with a declared thermal resistance lower than 0,05 m2K/W or a declared thermal conductivity greater than 0,1 W/(mK) at 10 °C are not covered by this European Standard. This European Standard does not cover in situ insulation products, products intended to be used for the insulation of building equipment and industrial installations. This European Standard does not cover the acoustical aspect of impact noise transmission.