Adding a second glazing layer, either to the inside or the outside of the original glazing, can improve both the heat insulation and sound-proofing of a building while preserving historic stained glass or leaded glazing in situ.
In the Durham Cathedral ‘Open Treasures’ project, Barley Studio fabricated and installed secondary glazing to all windows of the Monks Dormitory, redeveloped as an exhibition space (so requiring improved environmental conditions for the precious items on display).
Barley Studio fabricated secondary glazing in sheet glass, mounted in bronze frames that closely fit the window opening and with lead flashing around the perimeter. The secondary glazing was mounted to the interior to maintain the external aesthetic of the building, and is so discreet as to be almost invisible from the interior. The frames are screw fixed in position and so are easily removable for future maintenance.
