Oxford University called on Selectaglaze to assist with its renovations of St Luke’s Chapel and the former outpatient building on the Radcliffe Observatory Quarter site. The two buildings are both Grade II Listed, the chapel dating from 1865 and outpatients from 1913. Both suffered from significant heat loss due to the inefficient original glazing.  As the original windows were to be retained the University sought advice from Selectaglaze, to help resolve the issues. Selectaglaze installed 82 units across the two buildings using an array of products from its range to meet the required specification. In the chapel the stunning gothic arched windows posed an interesting challenge, as the planning authorities were particularly keen to ensure the aesthetic impact of the secondary glazing was kept to a minimum. Low emissivity glass was used throughout both of the buildings which in combination with the primary window achieve a U-value of 1.8, reducing heat loss by approximately 60%. In addition the application of secondary glazing achieved a reduction in noise egress and ingress.