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timber sash window


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The Sash Window Workshop

The Sash Window Workshop is the premier manufacturer and installer of traditional timber windows and doors in London and the South of England. We also offer a supply only service for the rest of the UK and a repairs service for wooden windows in London and the South.

We offer a full wooden window service. Operating out of our factory in Berkshire, we manufacture and installation of secondary double glazing, new sashes into existing frames (replacing just the moving parts) and complete new sash windows, wooden casement windows, timber French doors, Front doors and Bi-fold doors. Our repair services comprising draught sealing, minor repairs (central London only), and double glazing of existing windows.

The majority of our replacement wooden windows and doors are double glazed. However, we can also manufacture single glazed or use our heritage glazing where double glazing is unlikely to be approved (listed buildings and some conservation areas). All our new windows and doors come fully factory finished and are draught proofed.

Established in 1994, we have extensive experience working on a variety of period properties, from homeowner's flats and houses, to larger projects for charities, public and private sector organisations. We can also work to listed building requirements.

We strive to provide all our customers with a high quality product and exceptional customer service and are proud to be a Which? Trusted Trader and have a 5 Star Trustpilot Rating.  We are an independently run business and believe it is important to listen to our customers requirements.  Our highly experienced team of sales surveyors and installers will ensure that you are provided with the solution that meets your needs.

Contact us today for a free, no obligation site survey and quotation: 01344 868 668.

timber sash window company

Sash Windows

Our new box sash windows are manufactured at our workshop in Berkshire by our experienced team of tradesmen to high standards and comply to European manufacturing quality standard EN 14351.  They all come with an extensive guarantee.

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timber casement window company

Casement Windows

The Sash Window Workshop has a wealth of experience in the manufacture and installation of timber casement windows, both traditional and more modern styles. Our replacement windows are designed to add charm and character and be in keeping with your home.

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timber door company

Timber Doors

Designed to be in keeping with your home, our wooden doors are made to order by our craftsmen to individual designs, agreed with you before manufacture. We can exactly match the detail of any existing Bi-fold door, French door or Front timber door if required.

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Sash Window Workshop Experience

The Sash Window Workshop review
“I have now completed the double glazing of my 1911 detached home. Thanks to your products and service I have quite beautiful windows entirely in keeping with the integrity of the building. Thank you.”
- Mr B, Buckinghamshire (Feb 19)
The Sash Window Workshop testimonial
“Very happy with product and service.”
- Mr M, SW London (March 19)
The Sash Window Workshop London
“The Sash Window Workshop is one of the best firms I have dealt with. You are courteous, efficient in every department and deliver a wonderful finished product.”
- Mrs M, Hertfordshire (January 19)
The Sash Window Workshop
“Excellent all round!”
- Ms B, SE London (January 19)
The Sash Window Workshop logo
“I have been very impressed again by The Sash Window Workshop and given your contact details and brochure to a neighbour.”
- Mrs G, SW London (January 19)
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“The installer worked hard to complete our work in the timescale we required due to our holiday. He was friendly, worked very tidily and cleared up all the mess, leaving the site clean. He was always on time and the work is very nicely done.”
- Mr P, West Sussex (Jul 16)


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Guild of Master Craftsmen
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Which? Trusted Trader
Made in Britain