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Ogley, P and Wood, C and Brocklebank, I and Pickles, D (2010) ENERGY EFFICIENCY IN HISTORIC BUILDINGS - Secondary glazing for windows. Project Report. English Heritage.


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This guidance note provides advice on the principles, risks, materials and methods for upgrading the thermal performance of windows by the addition of secondary glazing. Windows make a major contribution to the character of historic buildings and every effort should be made to retain them. They can also tell us a lot about the history of a building; changing architectural taste and style, social hierarchy, building economics, craft skills and technical advances. Older windows can often be draughty as over time they distort as joints become weakened. Although adequate ventilation is important in older buildings excessive air leakage through windows wastes heat and is uncomfortable for occupants. Carefully designed and installed secondary glazing allows the original windows to be retained unaltered, and where necessary repaired, whilst reducing air leakage and conducted heat losses. As a result there is no loss of historic fabric and in most cases the installation is easily reversible.

Item Type: Monograph (Project Report)
Uncontrolled Keywords: energy efficiency, historic building, secondary glazing, window, windows,
Subjects: English > Building Envelope > Windows and Doors
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Depositing User: Kajsa Stavebring
Date Deposited: 26 Feb 2011 14:42
Last Modified: 04 Apr 2017 09:07

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