8 - 9 Grosvenor Place London SW1X 7SH
Detailed written analysis of the types of masonry staining / contamination present, and the reasons for their removal; detailed analysis of appropriate method(s) of masonry cleaning and their potential effectiveness for the removal of the staining / contamination, and their potential impacts on the historic fabric of the building; and before and after photos of trial panel(s) of the proposed masonry cleaning method(s), carried out on discrete but representative sections of the masonry, cross-referenced to key drawings pursuant to Condition 4 parts (a), (b), (c) of listed building dated 22nd September 2023 (RN:23/01812/LBC)