Best Ways to Improve Insulation for Sash Windows?

by tanah11

I love the look of my old sash windows, but they’re terrible when it comes to keeping the house warm. The cold air seeps in during winter, and I can hear everything happening outside, even with the windows closed. I’m looking into double glazing but unsure whether I should replace the entire window or just upgrade the glass. Has anyone tried double glazing existing sash windows? How well does it work, and is it worth the investment?

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Added:	2 days, 15 hrs ago 10 Feb 2025 12:08 CET

2 Comments on this Journal

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Marpell

2 days, 13 hrs ago

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I had my sash windows retrofitted with double glazing last year, and I can confidently say it was a game changer. The thermal efficiency improved a lot, making my home much warmer in winter and even cooler in summer. Noise levels also dropped noticeably. What’s great is that modern retrofitting techniques allow for slim double-glazed units to be installed into the original frames, so you keep the traditional aesthetics intact. I found this guide https://chameleon-decorators.co.uk/sash-windows-double-glazing/ really helpful when making my decision—it covers the whole process and benefits in depth. If you want to improve insulation while keeping your home’s character, I’d definitely recommend looking into it.

golaj78

2 days, 12 hrs ago

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My sash windows are in decent condition, but I’ve noticed that they don’t do much to keep the heat in. It’s good to hear that retrofitting is a solid option rather than having to replace them entirely. I’ll have to do more research, but this discussion has been really helpful so far!

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