Timber Sash Windows

Timber Casement Window

Timber Doors

Secondary Glazing


years in business


on Trustpilot


week lead time


years Guarantee

Timber Window & Doors coupled with sophisticated glazing systems.

Our timber windows and doors utilise state-of-the-art glazing technologies. From Low. E-coated double-glazed sealed units to innovative vacuum-insulated glass; our timber windows and doors are able to far surpass the U-value regulations now required in new builds and developments across the United Kingdom.

Sash-windows has tailored our state-of-the-art manufacturing facility to focus on enhancing the quality and performance of our timber windows and doors whilst maintaining a firm stance on bespoke flexibility and swift lead times.

For supply-only timber windows, I’ve found that Sash Windows is the best option. Their exceptional customer service, top-tier products, and competitive pricing make them the perfect partner for any of my projects.


Sash Windows are the best supplier of commercial timber windows and doors. Their exceptional service, top-notch product quality, on-time deliveries, and competitive pricing made them the perfect choice for me. I highly recommend them.


We have recently purchased five windows and a door from Sash-Windows. The whole process from start to finish has been excellent. They made the ordering and design process really easy and kept me updated on the delivery date, and they even helped me find local trades to install the windows.


Check out some of our amazing restorations & new build projects

Sash Windows Transform a Period Home in Calverly with Acoustic Sash Windows

Childhood Home Restored

Precision Engineering

We use the latest technologies while developing our precision engineered sash window.

ASBP Accredited

ASBP Members and committed to a healthy low carbon environment using sustainable.

FSC® 100%

We only use FSC® 100% certified timber on all of our windows.

Why Choose Sash Windows

Family run business with over 25 years experience

World Land Trust

For every door you buy we donate £1 to World Land Trust

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