The glazed roof is connected at Level 3 to the façades with structural units via an encapsulated gutter system that efficiently channels rainwater.

In plan, the approximately 400 m² roof is organised into glazed modules featuring single- or double-curved insulated glass panels.
The typical module measures 3000 × 5080 mm and has a curvature achieved in a hot-bending furnace along the long side measuring 97.8 m, producing a camber of 33 mm and a weight of about 2 tonnes.
Due to the barrel-shaped geometry, six of the glazed modules are required to adopt a double curvature, curving along both the long and short sides.

The insulated glass units were designed using a stratification of triple and double laminated panes with SGP interlayers. To reduce the solar factor and enhance thermal performance, an SN63 coating and argon gas were introduced.

The structural substructure supporting the glazed roof consists of six laminated glass beams with an SGP 5×12 layering. Each beam spans 15.2 m, featuring a curved extrados and a straight intrados, with a mid-span height of 920 mm.

The design was validated through FEM simulations and full-scale laboratory tests to demonstrate the system’s reliability under fragility testing (TN67-CWCT) and rainwater drainage performance.

Make Architects is an architectural practice based in the United Kingdom founded by Ken Shuttleworth. They have offices in London, Birmingham, Beijing, Hong Kong and registered offices in the Middle East. The practice is currently engaged in projects worldwide ranging from high rise offices to urban masterplans, residential and office developments, civic buildings, private and social housing, education buildings and interior design. In 2012 Make was ranked 46th in The Sunday Times 100 Best Small Companies to Work For category. They were also awarded Practice of the Year - South East and London by the Architects' Journal at the AJ100 Awards.