Regulation 23(2) - Materials in External Walls of Relevant Buildings

Regulation 23(2) applies to any building with a storey at least 18 m above ground level and which contains one or more dwellings; an institution; or a room for residential purposes (excluding any room in a hostel, hotel or a boarding house). It requires that all materials which become part of an external wall or specified attachment achieve European Class A2-s1, d0 or Class A1, other than those exempted by Regulation 23(3). Note 1: The above includes any building that contains student accommodation, care homes, nursing homes, sheltered housing, hospitals, dormitories in boarding schools and places of lawful detention. Note 2: The requirement in Regulation 23(2) is limited to materials achieving European Class A2-s1, d0 or Class A1. Therefore materials achieving limited combustibility cannot be deemed to meet the requirement using an alternative classification method. Note 3: Products given in the Commission Decision 96/603/EC as amended by 2000/605/EC and 2003/424/EC can be considered to be class A1 without testing. These products may be deemed to meet the requirement.