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    Discover our wide range of quality double glazed windows and doors and get a free, no-obligation quote! | 5.0 Star Rating From 120+ Reviews

    Are uPVC sliding sash windows any good?

    Yes. Modern uPVC sliding sash windows are a good choice where you want a period look with low maintenance. Well-made versions copy timber box sash proportions, tilt in for cleaning and meet current Part L energy standards, though listed and conservation area homes may need consent.

    How do they compare with timber sash windows?

    • No repainting and far less upkeep
    • Tilting sashes make cleaning easier
    • Slightly thicker sightlines than slim timber
    • Mechanism and balances need to be good quality

    Do they meet Building Regulations?

    Replacement windows in England need a Uw of 1.4 W/m²K or less, or a Window Energy Rating of Band B, which modern sliding sash ranges can achieve.

    Do you need permission to fit them?

    Listed buildings need listed building consent, and conservation areas can have Article 4 directions limiting window changes. Check with the council first, as some Oxfordshire homes sit in conservation areas. See our sliding sash windows. Jake at JMF Windows surveys every job himself, JMF is Certass registered, and its A-rated windows carry a 10-year guarantee.

    Do uPVC sash windows stick or rattle?

    Poor-quality balances can stick. Choose a system with spring balances rated for the sash weight, and test the operation in a showroom or sample before ordering.

    Thinking about new windows? Jake surveys every job himself, and our quotes are free, in writing and without obligation. We fit across Oxford, Kidlington, Bicester, Witney, Abingdon and the villages around. Call 01865 708464 or ask for a free quote.

    ← Back to uPVC Windows FAQs | See our uPVC windows

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