Regulation 8

The Commissioner of Building Control may, in addition to the Approved Documents, endorse in writing, in whole or in part, any alternative solution for use in establishing compliance with the objectives and performance requirements set out in the Third Schedule.

Any fixed installations that are designed, or any fixed installation works that are carried out, in accordance with an alternative solution endorsed under paragraph (1) are deemed to comply with the objectives and performance requirements set out in the Third Schedule.