Kawneer architectural aluminium systems were specified for use at Trinity Leeds, a top UK retail location in West Yorkshire. The £400 million scheme over 817,000 ft² unites three of the busiest shopping thoroughfares around a new central space and includes the refurbishment of an existing shopping centre, all to a BREEAM ‘Excellent’ rating and a 28 % improvement over Part L (CO2 emissions). The development made use of AA®100 capped and Structurally Silicone Glazed curtain walling systems with 50 mm sightlines and AA®110 zone-drained curtain walling with 65 mm sightlines on shop fronts and link bridges, complemented by tophung casement and tilt/turn windows.
The systems were installed on the redeveloped Leeds Shopping Centre, now Trinity West, by specialist sub-contractor DML Group and on the new-build Trinity East by Bennett Architectural Aluminium Solutions. The new venue for fashion, food and film is composed of buildings linked by a series of open-air arcaded streets and public spaces over which self-supporting glazed grid-shell roofs rise 30 m above street level.
Curtain walling, windows and doors from Kawneer also feature on a major office refurbishment in Cambridge, specified for their ‘good cost to performance balance’. The three-storey 1960s office building had been derelict for seven years, and the aim was to retain the quality architectural aspects of the building and work with the existing structure to bring it up to current office standards.
The AA100 zone-drained curtain walling with narrower 50 mm sightlines was used for screen and window replacement, with AA100 concealed window vents. The refurbishment, costing £1.7 million, also featured the 451PT framing system with series 190 heavy-duty commercial entrance and low/medium-duty swing doors.
External walls, floors and roof were upgraded, including creating a roof terrace on the second floor, to provide better thermal performance, whilst subtle modifications and additions to the fenestration improved daylight levels and energy efficiency. Existing windows were completely replaced with curtain walling, inclusive of the opening windows, which allows the building to be naturally ventilated by a mixed-mode strategy.