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Article Date: 5th October 2017

Selectaglaze Helps a Cambridge College to Improve Sustainability in a Grade II Listed Building

Jesus College - University of Cambridge - Secondary Glazing Units

Selectaglaze - Jesus College

Selectaglaze assisted Jesus College, part of the University of Cambridge, to improve heat efficiency and sustainability in a Grade II Listed building.

Jesus College is identified by its Listed buildings, sustainable design projects and modern architecture. In 2014 it began the West Court development by purchasing the Grade-II Listed buildings belonging to its neighbour, Wesley House.

The College appointed Niall McLaughlin Architects to draw up the plans and Cocksedge Building Contractors to carry out the refurbishment and reconfiguration of the site. The College wished to refurbish the Grade II Listed building to make it as heat efficient and sustainable as possible, while also retaining its beautiful original features.

However, as a Grade II Listed building, creating a specific sustainable agenda with the introduction of insulation and secondary glazing proved challenging. The main contractor, Cocksedge, approached Selectaglaze, the UK’s leading provider of secondary glazing, for a bespoke solution. The primary windows were draughty, allowing heat to escape and suffering from noise ingress and egress. The College stipulated that the original materials and architectural design were to be preserved and that the secondary glazing had to be sympathetic to the heritage of Jesus College.

Selectaglaze - Jesus CollegeSelectaglaze has extensive experience working in Listed buildings and it previously worked on the College’s Chapel Court student accommodation refurbishment, where it treated over 300 openings. Selectaglaze installed over 100 secondary glazing units in West Court. The original primary windows, iron casements set into stone mullions, look fantastic, so it was essential that the secondary glazing did not detract from them. A mixture of casement and horizontal sliders were selected to provide the best match with the original design and to avoid the introduction of new sightlines. Finished in anodised bronze, they complement the overall style of the building.

The College hopes to reduce its annual energy costs as a result of Selectaglaze's work. In addition, secondary glazing is widely used to reduce noise ingress and it is more effective than new double glazed windows in the majority of cases. Therefore, those staying there experience a far more peaceful environment, with little or no outside distractions.

Secondary glazing encompasses the fitting of an additional internal window inside the rooms of a building and is a fully reversible adaptation. Therefore, it is widely accepted by most heritage bodies. Selectaglaze secondary units are available in a variety of styles and finishes.

Selectaglaze - Jesus CollegeSecondary glazing traps an insulating layer of air, which can reduce heat loss by 50%. With the application of low emissivity glass, U-values of around 1.8 can be achieved. High performance twin seals help to virtually eradicate draughts. In addition, noise ingress is significantly reduced. A gap between the primary and secondary glazing of at least 100mm achieves a reduction of 45dB - rising to more than 50dB if specialist acoustic glass is specified.

Established in 1966 and Royal Warrant Holder since 2004, Selectaglaze is the leading specialist in secondary glazing. It boasts a wealth of knowledge and a range of extensive products to suit all projects from Listed buildings, to new build hotels.

Selectaglaze will be at London Build, Olympia between the 25th and 26th October 2017. This two day event brings together experts from the built environment to share and learn information about their industry. The Selectaglaze team can be found at Stand F29.

Click here to view upcoming events Selectaglaze will be attending.

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