Sash Windows Sunderland — Traditional Character, Modern Performance

uPVC sash windows are vertical sliding windows that replicate the look of traditional timber sash windows using low-maintenance uPVC frames. The two sashes slide vertically — lower sash up, upper sash down — giving the characteristic look and ventilation of period windows without the maintenance timber demands.

Yes. Modern uPVC sash windows closely replicate the proportions of traditional timber originals — including run-through horns, deep bottom rails, and woodgrain foil finishes. Popular for Victorian and Edwardian properties across Sunderland and Tyne and Wear where authenticity matters but low maintenance is preferred.

In most cases, replacing existing sash windows with uPVC sash windows of similar appearance falls under permitted development rights — no planning permission required. If your property is listed or in a conservation area, additional restrictions may apply. We advise on this during the free survey.

uPVC sash windows offer significantly better thermal performance, require no painting or timber treatment, and won't rot, warp, or swell. Timber sash windows are the authentic original and may be required in listed buildings — but they need ongoing maintenance. Modern uPVC closely replicates the appearance at a lower long-term cost.

Yes. Our uPVC sash windows use double-glazed sealed units with argon fill and warm-edge spacer bars, achieving A-rated thermal performance. Brushpile weatherseals minimise draughts — a major improvement on original single-glazed timber sashes.

Yes — run-through horns are available on our uPVC sash windows. These are the decorative extensions at the bottom corners of the upper sash, characteristic of Victorian and Edwardian properties. They replicate the original timber detail closely.

White, cream, rosewood, golden oak, Irish oak, and anthracite grey — plus dual-colour options. White and cream are the most traditional choices for period properties. Contact us for a full colour brochure.