Conservation of fuel and power: Approved Document L, Volume 2 — Buildings other than dwellings

R6, R22 O N L I N E V E R S I O N Regulation continued (2) W here there is a material change of use of part only of a building, such work, if any, shall be carried out as is necessary to ensure that— (a) that part complies in all cases with any applicable requirements referred to in paragraph (1)(a); (b) i n a case in which sub-paragraphs (b), (e), (f), (g) or (h) of paragraph (1) apply, that part complies with the requirements referred to in the relevant sub-paragraph; (c) i n a case to which sub-paragraph (c) of paragraph (1) applies, the whole building complies with the requirement referred to in that sub-paragraph; (d) in a case to which sub-paragraph (i) of paragraph (1) applies— (i) t hat part and any sanitary conveniences provided in or in connection with that part comply with the requirements referred to in that sub-paragraph; and (ii) t he building complies with requirement M1(a) of Schedule 1 to the extent that reasonable provision is made to provide either suitable independent access to that part or suitable access through the building to that part; (e) i n a case to which subparagraph (j) applies in respect of a material change of use described in regulation 5(b) or (g), that part complies with the requirement referred to in that subparagraph. (3) S ubject to paragraph (4), where there is a material change of use described in regulation 5(k), such work, if any, shall be carried out as is necessary to ensure that any external wall, or specified attachment, of the building only contains materials of European Classification A2-s1, d0 or A1, classified in accordance with BS EN 13501-1:2007+A1:2009 entitled “Fire classification of construction products and building elements. Classification using test data from reaction to fire tests” (ISBN 978 0 580 59861 6) published by the British Standards Institution on 30th March 2007 and amended in November 2009. (4) P aragraph (3) does not apply to the items listed in regulation 7(3). Requirements relating to a change to energy status 22. Where there is a change to a building’s energy status, such work, if any, shall be carried out as is necessary to ensure that the building complies with the applicable requirements of Part L of Schedule 1. Intention Regulations 6 and 22 of the Building Regulations set requirements for buildings to comply with Schedule 1 to the Building Regulations when a material change of use or a change to energy status occurs. In the Secretary of State’s view, the requirements of regulations 6 and 22 are met by following the guidance in Section 11. 76 Approved Document L Volume 2, 2021 edition Building Regulations 2010 O N L I N E V E R S I O N