Modifying Windows and Doors in Historic Buildings
There are many ways to improve the energy efficiency and climate resilience of a historic or traditional building. However, whether there is need or opportunity to do so will vary widely depending on context. To make sure a building is resilient, well adapted, and able to provide a healthy internal environment in our changing climate, it is best to consider all proposals in a holistic manner following a whole building approach.
Doors and windows can be an important part of the architectural significance of a historic building. Find out what factors to consider when you aim to increase their efficiency, without damaging the significance of these features.
Links to more detailed advice
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Modifying Historic Windows as Part of Retrofitting Energy Saving Measures
Historic England's position and our advice on the care and repair of old windows and improving thermal performance.
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Traditional Windows: their care, repair and upgrading
Guidance and best practice on the understanding, conservation and thermal upgrading of traditional windows.
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Draught-Proofing
Ventilation helps prevent dampness and decay in older buildings, but a careful balance must be struck as excessive draughts can waste heat.
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Energy Efficiency and Historic Buildings: Secondary glazing for windows
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.
