Traditional replacement sash windows

Timber Windows and Doors

External timber doorset

Replacing and Repairing Timber Windows and Doors in Period Homes

The Sash Window Workshop are a premium manufacturer and installer of traditional timber windows and doors. We have extensive experience working in conservation areas and can also comply to listed building requirements.

Traditional timber windows and doors were not manufactured to consistent standards as they are today. Consequently, every window that we repair or manufacture is different, meaning we have to pay extraordinary attention to detail. All our new wood windows are therefore bespoke and made to meet your individual requirements.


We strive to provide a high quality product and installation alongside excellent customer service. We are proud to be a multi-award-winning company and have been Which? Trusted Traders since 2014.  We also have an ‘Excellent Trustpilot rating.

All our salesmen understand the importance of listening to your needs and will help you identify the right solution to meet your requirements.Which? Trusted Trader

We offer a range of services including secondary glazing, installing new sashes into existing frames (replacing just the moving parts), draught sealing and replacement windows and doors. We offer various new joinery products including complete new sash windows, casement windows, external french doors, front doors, sliding doors and bi-fold doors.

Accoya bay sash window


All our windows are manufactured in our workshop in Bracknell by our skilled craftsmen who utilise the latest technology to make high quality, timber windows to suit your home.

For new wooden sash windows, casement windows and external timber doors, we recommend using a timber called Accoya.

Accoya is a sustainably sourced modified wood which is highly durable and comes with a 50 year anti-rot guarantee. The high durability also means that it doesn’t require as much maintenance as some other timbers.

Find out more about our replacement window and door services:

“This is the second batch of new windows we have had from your company. In both cases the product, installation and customer service were all excellent.” – Mr B, Surrey.

Our timber sash windows and casement windows come fully factory finished. They are double glazed as standard and are draught proofed by our fitting team on installation to help improve energy efficiency.

We offer a variety of different glass and ironmongery options to meet your requirements. If you are unable to have standard double glazing due to planning restrictions, we can also manufacture single glazed windows or install our heritage double glazing.