Sash Window Replacements
Hardwood and timber-effect sliding sash windows for South West period properties.
Period looks, modern performance
Replacement sliding sash windows preserve the character of Georgian and Victorian properties while delivering the thermal performance you'd expect from a modern A-rated unit. We supply engineered hardwood and timber-effect uPVC options across Devon, Cornwall, Dorset and Somerset.
Every sash we fit is made to measure for your opening — there's no such thing as a stock size on a 150-year-old townhouse. We survey in person, agree sightlines, glazing-bar pattern and finish in writing, and only then place the order with our joinery partner.
Process
- Free on-site survey — we measure every opening individually and discuss period-correct detailing.
- Written, itemised quote with hardwood and timber-effect options side by side.
- Bespoke manufacture (typically 6–10 week lead time on engineered hardwood).
- Installation by our in-house team with minimal disruption to surrounding plaster and stonework.
- Final inspection and details of the 10-year workmanship guarantee.
Sashes still solid but tired?
If your existing timber sashes are structurally sound, our on-site spraying service can refinish them in any heritage colour for a fraction of full replacement cost.
Related services
Frequently asked
What's the difference between a sash and a casement window?
Sash windows slide vertically (sometimes horizontally). Casements are hinged on the side and open outwards. Most Georgian and Victorian South West properties were built with sliding sashes; most 1930s+ homes use casements.
Can sash windows be double glazed?
Yes. Modern sash window units use slim 14mm sealed units that preserve the original sightlines while delivering full A-rated thermal performance. You don't have to choose between heritage looks and energy efficiency anymore.
How much do replacement sash windows cost?
Hardwood double-glazed sliding sashes typically cost £1,800–£3,200 per opening fitted in the South West, depending on size, timber species and finish. uPVC sash-effect units are around 40–50% cheaper.
How long do sash windows last?
Timber sash windows need ongoing maintenance. Ask for the written 10-year workmanship guarantee terms for your project.
Spring-balanced or weighted cord sashes?
Spring balances are slimmer, lower maintenance and the standard choice for new sashes. Weighted cords are the traditional option — both are available.
uPVC and aluminium sash windows
uPVC sash windows
uPVC sash windows give the look of a traditional sliding sash with modern A-rated double glazing and low maintenance. They suit Victorian and Edwardian terraces and villas where the original sashes have gone, and later homes where owners want a period look without the upkeep of painted frames.
We can match the glazing bars and proportions of the street, choose a frame colour in any RAL shade, and fit a sash window replacement one opening at a time so the house is never left open for long.
- Sliding sash look with A-rated double glazing
- White, cream, grey or any RAL colour
- Glazing bars to match neighbouring windows
- Multi-point locking and restrictors available
Aluminium sash windows
Aluminium sash windows use slim powder-coated frames, which makes them a good fit for larger openings and contemporary takes on the sash style. They are a more premium choice than uPVC and are worth considering where narrow sightlines matter most.
Read more: Aluminium windows
Sash windows across the South West
We fit replacement sash windows across Devon, Cornwall, Dorset and Somerset.
Read more: Casement windows · Coloured windows
More questions
Do you fit uPVC sash windows?
Yes. We supply and fit uPVC sash windows across Devon, Cornwall, Dorset and Somerset, with A-rated double glazing and any RAL frame colour.
Are aluminium sash windows available?
Yes. Aluminium sash windows have slimmer powder-coated frames and suit larger openings; we can price them alongside uPVC.
Do you fit sash windows in Cornwall?
Yes. Cornwall is part of the area we cover for sash window replacement.
Ready to start your project?
Free quotes · 10-year guarantee · Friendly local service.