Debrief.
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Newly rebranded from Kawneer, Novastruct used a Manchester cancer-research building to make a narrow, useful point, that on a moving structure, the façade's real problem is deflection, and it has to be solved early.

Manchester towers and stadium developments
An evolving skyline. The new towers and stadia Bird used to frame façades that are "fit for purpose", enhancing the city rather than erasing it. Images from the presentation

Andrew Bird led with a piece of housekeeping that was also the headline: Kawneer is now Novastruct. The business has rebranded Cornier Europe to Novastruct, continuing the legacy across three European locations, France, the Netherlands and the UK, and positioning itself as a systems house specialising in aluminium curtain walling, windows and doors. Bird introduced the new name to architects and specifiers, and then made a genuinely technical case around one building.

Enhance, not erase

Bird set the scene with Manchester's fast-changing skyline, the Etihad's North stand extension, a wave of build-to-rent towers, projects like 101 Embankment, VOX, Circle Square and First Street, under a banner of "enhance, not erase." The through-line for the systems on all of them, he argued, is façades that are genuinely fit for purpose rather than merely specified.

Expressive latticed facade
Form as performance. An expressive envelope where movement is designed in, not bolted on.

The Christie: designing for movement

The case study was the Christie Paterson Cancer Research Centre in Manchester, by BDP Architects, a project Bird framed around three words: a façade that moves, protects and performs. The design problem was deflection. A building of this kind moves, and the façade has to absorb that movement across its life without losing its seal.

Bird's answer came in two ideas. The first he called "engineered armour": a unitised curtain-wall system built to take movement, with an enhanced movement stack joint, split reinforcement that lets panels "step," a continuous interlock between units, and seals designed to stay engaged as the building moves. The second was "layered defence", three lines of protection working together: an outer rainscreen gasket, a stack-joint air seal and an internal air seal, so that movement is absorbed without protection ever being lost.

The Christie Paterson Cancer Research Centre facade
The Christie Paterson Cancer Research Centre (BDP Architects). A unitised façade built as "engineered armour", an enhanced movement stack joint, split reinforcement and a continuous interlock, to take building movement while staying sealed.

What it adds up to

The lessons Bird drew were deliberately general. Façades must be performance-led. Movement needs to be designed in early, not accommodated late, when the options have narrowed. Interfaces matter as much as products. And testing and project-specific analysis, not catalogue values, are what give confidence that a complex façade will actually behave. The rebrand may have been the occasion; the argument about movement was the substance.

Layered facade seal diagram
Layered defence. An outer rainscreen gasket, a stack-joint air seal and an internal air seal, three lines of protection, so movement is absorbed without the façade losing its seal.
Modern glass office building at dusk
Fit for purpose. Movement, thermal and structural demands resolved together in the envelope.
Synthesis based on the presentation by Andrew Bird (Novastruct, formerly Kawneer) at Zak World of Façades Manchester, 3 June 2026. Imagery from the presentation. The Christie Paterson Cancer Research Centre is by BDP Architects.