Sash Windows London - Refurb-a-Sash

We’re an award winning sash window company in London. Your local specialist refurbishment and replacement service for both single and double glazed sash windows. We are Certass accredited and have been offering timber sash window repairs and installations in West London and surrounding areas since 1992. Our comprehensive services include traditional wooden / timber windows, casement windows and French doors.

West London Sash Window Company TourWe cover most local areas including all of South West  and West London (plus parts of Surrey and Middlesex – so do ask) and offer …

  • –  Installation of new sash windows and draught / sound proofing of existing timber windows.
  • – Full or part replacement for single and double glazed sash windows.
  • – Original box sash window replacements or restorations.
  • – Noise reduction / soundproof glazing with acoustic glass & the best advice for listed building owners.

Our single and double glazed box sash windows, casement windows and french doors are produced by time served craftsmen in our London workshop. We faithfully replicate original features using traditional joinery methods and all selected timber is preservative treated, hand prepared and the wooden window frames are then spray paint finished.

Sash Window Repairs

A comprehensive service for sash window repairs to install draught proofing & improve security as well as rectify common problems. Including poor fit, imbalance, broken cords and stuck sash windows.


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Sash Window Refurbishment

An intermediate option incorporating our repair service but including the installation of new sash window frames and sills if required. Plus upgrading to double glazed windows and / or acoustic glazing and refurbishment of the original box sash window frame.


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Sash Window Replacement

A complete ‘back to brick’ service. This includes installation of new Box sash windows, Casement windows and French door frames, window sills and surrounding mouldings usually requiring Building Regulation compliance.


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Sash Window Company in London

The concept behind Refurb-a-Sash is to offer a realistic alternative to replacing period Victorian sash windows with unsightly & inappropriate modern and uPVC replacements.

Our sash window company was formed in 1992 and we began doing exactly as our name suggests, providing solutions to common problems such as rattles, draughts, broken cords and poor security for period windows.

Double Glazed Sash Windows

With strong initial demand it soon became apparent that some original sash windows were simply too decayed to be refurbished economically. So a ‘part renewal’ service was then introduced to provide ‘like for like’ timber sections and frames replacements. This natural progression led to requests for a double-glazed version of the traditional corded sash window which we introduced in 1993.

Originally we operated from shared premises in East Sheen in South West London. The business then relocated slightly further north to workshops in Kew, where further staff were taken on and our acoustic glass windows range was developed in response to those clients requiring soundproofing from the Heathrow flight path and nearby busy roads.

By 1998 we had outgrown Kew and moved to larger premises in Twickenham. This additional space enabled us to bring our double-glazed unit and glass production in house, thereby taking further control of the quality of our products at all stages. Over the next five years our company and reputation grew with the receiving of a Design and Conservation Award for our work in Richmond together with recognition for the environmental policies adopted by the company. These included our iconic Modec all electric delivery van & smart company cars often seen around the area many years before the electric vehicle revolution which is now commonplace.

By 2010 our company had taken on two further workshops in Twickenham, although the logistics of moving windows and doors across West Londo was not ideal and in 2011 we moved to our current 13,500 square feet premises in Isleworth TW7. We have further developed our special glazing department to include stained glass panel rebuilds, textured glass and triple glazing. Our joinery is a wonderful combination of traditional hand and craft skills together blended with the latest in woodworking technology. Our extensive product range now includes sash and casement windows, single & French doors, all bespoke, hand finished, and spray painted in durable long life coatings.

With excellent customer reviews, extensive recommendations and a full range of manufactured and installed sash windows and doors available, you are welcome to visit our showroom and workshop. Alternatively take a virtual tour of our premises now by clicking the button below, or simply call us for free impartial advice.

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London Sash Window Company
1432a Clock Tower Rd, Isleworth London TW7 6DT

“Have nothing in your house that you do not know to be useful, or believe to be beautiful.”


William Morris

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