Summit House and the adjacent Grade II-listed No 46 Worship Street in central London have been refurbished and extended
Working in collaboration with Low Carbon Workplace, the original 1980s building has been reclad and remodelled, with the addition of a two-storey steel-framed roof extension that is stacked to create roof terrace areas.
The new envelope of patinated copper forms part of a passive environmental strategy designed to minimise overheating on the upper levels, while the lower level shaded areas have a low emissivity coating to keep warmth inside.
Internally, the structure is expressed through the red-painted steel frame and exposed ceilings.
The new envelope is designed to respond to the site’s orientation and the adjacent building’s massing, both in maximising environmental performance and expression of scale. The patinated copper cladding makes the building a distinctive contemporary warehouse while staying in keeping with the surrounding red brick buildings. The result is a building that performs as well as an equivalent new building.
70w astudio sh pl a se dd ga 0183
Start on site March 2015
Completion November 2017
Net area 7,091m²
Form of contract Design & Build
Cost £21 million
Structural engineer HTS
M&E consultant Thornton Reynolds
Quantity surveyor/cost consultant Gleeds London
Façade & external balustrades JPJ Installation
Steel fabricator TSI
Cycle racks Falco
Glazed partitions Planet
Concrete floor & facade panels Mass Concrete
Platform lifts Gartec
Feature walls & reception desk Opus Magnum
Project manager Gleeds London
CDM coordinator PFB Construction Management Services Ltd (pre-construction)
Approved building inspector Butler & Young
Main contractor Willmott Dixon
CAD software used Aecosim/Bentley
Annual CO2 emissions (estimate based on a partially occupied building) 57.13kg/m² (NIA)