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Q&As
Should I replace my windows or install secondary glazing?
I live in a Victorian terrace home in a conservation area in South London. My windows are single-glazed sash units and it’s impossible to keep the house warm, even when keeping the heating on. Is it more hassle to apply for permission to replace the windows, with the chance it could be rejected, or should I consider secondary glazing inside my home?
One Answer
Even in conservation areas, there are cases in which you can change your windows through permitted development rights ‒ this just needs checking with the local council. If you are able to and decide to replace under permitted development, the new windows need to closely resemble the old in terms of their appearance and material type. I would always advocate replacing as the technology in glass, weather sealing and timber frames has moved on a lot in recent years. You really can achieve both thermal efficiency and traditional aesthetics. On the other hand, replacing is usually the more expensive option, so obviously budgetary constraints may lead you towards the option of secondary glazing.