Renowned as “the spiritual home” of the Vintners Association, “Five Kings House” underwent a major refurbishment. Standing on the site of the original Vintners Hall dating back to 1446, it succumbed to the Great Fire of London and was rebuilt in 1671. It suffered another blow in 1822 with the loss of several rooms and its façade during the widening of Upper Thames Street. The present façade dates back to 1910. When surveyors, CB Richard Ellis approached Selectaglaze to handle the secondary glazing for noise insulation, an essential part of the brief was to produce a convex curved on plan hinged unit to match the contours of a number of the existing primary windows. This particular treatment, using slimline secondary windows systems, had always been deemed difficult due to the very tight tolerances required for the curved glass and the need for a multi-point locking mechanism to ensure a good seal. This unique project required a total of 99 units, including round “bulls-eyes” and the more conventional horizontal and vertical sliding systems.