Find a sash window company you can trust
The directory of sash window companies only. Compare local companies for repair, draught-proofing, double glazing and replacement, and see who works on listed buildings before you ask for a quote.
Material
Service
Product
- Box sash windows
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- Draught-proofing systems
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- Internal shutters
- Secondary glazing panels
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Featured companies
Sash window companies working across London.
Paxton RestorationPaxton Restoration restores sash windows and repairs casement windows, with draught-proofing, double glazing, rot and resin repairs, and…
The Sash Window WorkshopThe Sash Window Workshop has made replacement sash and casement windows since 1994, along with doors, secondary glazing,…Mortice and GreenMortice and GreenMortice & Green has repaired and replaced sash windows in London since 1994, working from Isleworth. Services include…Golden Ratio Joinery sash windows and doors replacement and repairGolden Ratio Joinery sash windows and doors replacement and repairGolden Ratio Sash Windows & Doors repairs, restores and makes bespoke timber sash windows for Georgian, Victorian and…Wooden Window Service LtdWooden Window Service LtdWooden Window Service restores and repairs timber sash and casement windows, including draught-proofing, sash cord replacement, glazing and…Woodcock Sash Windows EsherWoodcock Sash Windows EsherWoodcock Sash Windows makes bespoke box sash and casement windows and timber doors, mainly in Accoya, and carries…Guides
Know what you’re asking for before you get a quote.
Sash window pricesWhat repair, restoration and replacement cost in 2026Read guide →
Sash window repairWhat a full overhaul involves and what it costsRead guide →
Double glazed sash windowsNew windows, new sashes or slim glazingRead guide →
Secondary glazingWarmer, quieter and fine for listed homesRead guide →
Draught-proofingStop draughts and rattles for goodRead guide →
Georgian windowsSix-over-six sashes and how to care for themRead guide →Specifying sash windows for a larger project?
Find manufacturers, joinery workshops and installers for multi-unit, heritage and refurbishment work, and the suppliers behind them.
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