Window Repairs in Windsor: Glass, Hardware and Timber Frames

SL4 covers a genuinely wide spread of window joinery — tall Georgian box sash windows with generous glazing bars in the streets nearest the castle, Victorian and Edwardian casements and sashes through Clewer and Dedworth, and simpler, flatter casements on the newer developments toward Old Windsor, Datchet and the roads around Eton. Most window problems in any of these are not frame problems: a misted pane, a stiff handle, a dropped hinge. These are hardware and glass issues, fixable without touching the frame.

On a Georgian sash window, the case frame, weights and cords are often still sound even where the glass or hardware has failed. We measure the opening, order a matched replacement sealed unit through a specialist glazing partner, and re-glaze the existing frame — the frame itself stays, only the glass changes. Where the timber genuinely has failed — a cill gone soft, a joint split by years of water ingress — we splice in new, matched timber and finish it to the existing glazing bar profile rather than defaulting to a full frame swap.

Victorian and Edwardian windows through Clewer and Dedworth bring their own moulding profiles, and we take the same care matching those as we do on the grander townhouses nearer the castle. Out toward Old Windsor and the newer roads near Eton, the joinery is more standard and repairs are usually quicker, though the diagnosis — glass, hardware, or timber — is exactly the same process.

Every repair starts with photos or a site visit, so we can tell you whether you are looking at a glass problem, a hardware problem, or a timber problem, and price accordingly. If a frame is genuinely too far gone for a sensible repair, we say so honestly and point you toward a FENSA-registered installer.

We repair and re-glaze existing window frames. We do not remove and replace whole windows — that is notifiable building work and sits with FENSA or Certass registered installers, who operate under the relevant competent person self-certification schemes.

If your assessment visit shows that a Windsor or Eton frame has failed beyond a sensible splice repair, we will tell you plainly and recommend a FENSA-registered installer rather than attempt a repair that will not last.

Everything short of that — glass, hardware, locks, draught-proofing, and timber repairs to an otherwise sound frame — is work we do carry out, in-house.

A single misted sealed unit typically costs £180–£350 supplied and fitted, with hardware repairs usually well under £150 per window. These are indicative, all-in ranges based on recent work — your exact price depends on window size, glass specification and access, confirmed in writing after the assessment visit.

Georgian and Victorian frames near the castle and through Clewer and Dedworth with non-standard dimensions can take a little longer to source glass for, but quotations remain free with no obligation.