Sash Window Company in London - Refurb-a-Sash

For repairs and refurbishments of single and double glazed sash windows in London, contact award winning Refurb-a-Sash Ltd. We are a Certass accredited specialist London based sash window company which provides replacements for timber windows and doors. We have been trading for over 30 years and our comprehensive repair and replacement services include traditional wooden / timber sash windows, casement windows and French doors.

Refurb-a-Sash cover most local areas including all of South West, and West London (plus parts of Surrey and Middlesex, so do ask) and offer expert services including –

  • –  Installation of new sash windows and draught or sound proofing of existing timber windows.
  • – Full or part replacement sash windows (traditional and modern)
  • – Original box sash window replacements or repairs.
  • – Noise reduction / soundproof windows with acoustic glass & the best advice for listed building owners.

Our modern single and double glazed sash windows, casement windows, and french doors are all manufactured in London by our fully trained and experienced team of craftsmen. We faithfully replicate original features using traditional joinery methods using carefully selected timber which is preservative treated and hand prepared, and all wooden window frames are then spray paint finished. With plenty of five star reviews and testimonials, we truly are one of the top sash window companies in London.

London Sash Window Company Showroom Sash Window Repairs London

Sash Window Repairs London

A comprehensive service for sash window repairs in London to install draught proofing & improve security, as well as rectify common problems. Repairs typically include fixing imbalanced or poorly fit windows, broken cords and stuck sash windows.

Sash Window Repair Service

Sash Window Refurbishments London

An intermediate option incorporating our window sash repair service and also including the installation of new window frames and sills if required. Plus we can upgrade your home to double glazed windows and / or acoustic glazing, in addition to the refurbishment of the original box sash window frame.

Sash Window Refurbishment Service

Replacement Sash Windows London

A complete sash window replacement ‘back to brick’ service. This includes installation of new box sash windows, casement windows and French door frames, window sills and surrounding mouldings. Window replacements usually require Building Regulation compliance for which we can also offer expert advice.

Sash Window Installations

London Sash Window Company

The concept behind Refurb-a-Sash is to offer an affordable 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. We provide solutions to common problems such as rattles, draughts, broken cords and poor security for period sash windows throughout London.

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 window frame 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 we expanded taking on more staff and our acoustic glass windows range was developed in response to those clients requiring soundproofing from the London 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 sash window company had taken on two further workshops in Twickenham, although the logistics of moving windows and doors across West London 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 of sash windows also includes casement windows, single & French doors, all bespoke, hand finished, and spray painted in durable long life coatings.

Sash Window Company Reviews


We have excellent customer reviews on Google, and Houzz , extensive recommendations and a full range of manufactured and installed sash windows and doors available, plus you are welcome to visit our London 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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Sash Window Installations

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

“We’ve recently had 12 large sash windows fully refurbished and have been extremely impressed by the quality of the workmanship, attention to detail and customer service.”

Mr C Smith, London

Award Winning Sash Windows Refurb-a-Sash - Sash Windows London
Sash Window Company in London - Accredited
London Sash Window Companies Approved
Replacement Sash Windows
Sash Window Company - TGAS Registered
Double Glazed Sash Windows London
Sash Window Repair

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