Project case study
10 Piccadilly
Waterproofing specialist consultant on the Crown Estate's commercial redevelopment of 10 Piccadilly, a Grade II listed building adjacent to Piccadilly Circus.
10 Piccadilly is an extensive commercial redevelopment for the Crown Estate, a Grade II listed building adjacent to Piccadilly Circus, with Piercy & Co as architect, Elliott Wood as structural engineer and Dendy Byrne as project manager. CLW was appointed as the waterproofing specialist consultant.
The project involves the full refurbishment of a 1920s steel-framed building to create a mixed-use development comprising offices, retail and a new landscaped roof terrace. A listed 1920s frame sets the constraints here: the waterproofing strategy has to work with the structure that exists, not the structure a new-build specification would assume.
CLW produced a Waterproofing Design Philosophy to guide the specialist contractor, covering Type A, B and C systems to achieve Grade 1b and Grade 3 performance across the B1 and B2 basement levels and the podium areas. Writing the philosophy down at this stage is the point, it gives the specialist contractor a defined performance framework to price and deliver against, rather than a blank sheet.
Working on a comparable scheme?
Independent waterproofing design from RIBA Stage 2 through construction monitoring. Defensible, document-led, contractor-agnostic.