# The Building Regulations &c. (Amendment) Regulations 2012, Regulation 15: Requirements relating to thermal elements


For regulation 23 (and the heading before it) substitute—
“Requirements for the renovation or replacement of thermal elements
23 (1) Where the renovation of an individual thermal element—
(a) constitutes a major renovation; or
(b) amounts to the renovation of more than 50% of the element's surface area;
the renovation must be carried out so as to ensure that the whole of the element complies with paragraph L1(a)(i) of Schedule 1, in so far as that is technically, functionally and economically feasible.
(2) Where the whole or any part of an individual thermal element is proposed to be replaced and the replacement—
(a) constitutes a major renovation; or
(b) (in the case of part replacement) amounts to the replacement of more than 50% of the thermal element's surface area;
the whole of the thermal element must be replaced so as to ensure that it complies with paragraph L1(a)(i) of Schedule 1, in so far as that is technically, functionally and economically feasible.”.

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Source: https://www.legislation.gov.uk/uksi/2012/3119/regulation/15 (the official version)
Page: https://openlegislation.uk/building-regulations-c-amendment-regulations-2012/regulation-15
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.