Technical Booklet E Fire Safety·Page 137·5.4G
Material Change of Use - External Wall Requirements
When a building changes use to become a relevant building, external walls and specified attachments must be investigated and modified to contain only materials achieving European Class A2-s1, d0 or Class A1.
Regulation 8 provides that, where the use of a building is changed such that the building becomes a building described in Regulation 23(4), the construction of the external walls, and specified attachments must be investigated and where necessary work must be carried out to ensure they only contain materials achieving European Class A2-s1, d0 or Class A1, other than those exempted by Regulation 23(3).
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