Great Arthur House, London, by John Robertson Architects

The new facade; the team created a thermally broken extrusion 119mm wide with the glazing fixed in with structural silicone.

Chamberlin, Powell & Bon’s grade II-listed Great Arthur House in the City of London urgently needed a new facade but double glazing was too heavy for its structure. Thomas Lane found out how John Robertson Architects came up with a solution that retains its distinctive appearance

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