Sainsbury Wing Roof Glazing Refurbishment, The National Gallery

The largest area of glazing on the National Gallery building, comprising Schucco curtain walling profiles installed as part of the original Sainsbury Wing construction in 1991. A series of minor leaks required a fabric survey in 2017 revealing some decay of seals but also inappropriate maintenance interventions. The works proposal developed comprise replacement of broken glass panels, opening up of aluminium cover plates, lifting of clamping bars, and replacement of gaskets and tapes. Also the deep cleaning of polyester powder coated aluminium cover plates and panels. All works required careful intervention and installation given the building’s Grade One Listed status.

Three phases of the project have been completed to date, the latest utilising access scaffold for the concurrent Facade cleaning project. Barton Engineers acted as contract administrator, cost consultant, and heritage consultant. We engaged Cladtech Ltd specialist cladding consultants to assist with the initial survey.

Client The National Gallery
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