Wooden sash windows

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7BDF7E99-FF40-4125-9E4D-AD2D20F06698 Created with sketchtool.
7BDF7E99-FF40-4125-9E4D-AD2D20F06698 Created with sketchtool.

Accoya Sash Windows

Classic look, contemporary performance

When you want to add more character to your home or simply replace old or rotten old wooden sash windows, Accoya wood is the answer.

Easy to work with, Accoya is ideal for both traditional and contemporary joinery. As a homeowner you can take your pick from a range of bespoke factory finishes, and thanks to Accoya’s stability, your chosen coatings stay looking pristine for longer.

Low Maintenance

Low maintenance

Save time and money by choosing Accoya for your wooden sash windows made by manufacturers across North America

Highly Stable

Highly stable

Your sash windows will continue to open effortlessly in all seasons and for years to come.


Accoya wood warranty giving you peace of mind that your sash windows are a worthwhile lifetime investment.

Non Toxic

Non toxic

Accoya is natural wood, and so your Accoya sash windows are not harmful to the environment ideal for your home and the planet.

New double glazed timber sash windows

case study

New double glazed timber sash windows

This property in Wiltshire was upgraded with new double glazed Accoya sashes installed into the existing window frames.

The homeowner wanted to upgrade their wooden sash windows, which were cold and draughty. Accoya was chosen due to it being long lasting, with an anti-rot guarantee and requiring low maintenance. The new windows were manufactured and installed by approved manufacturers The Sash Window Workshop. Before installation, the windows were also factory coated using PPG coating in white to match the existing frames.

In total, 16 windows had new sashes installed into existing window frames with antique brass ironmongery.

Coatings & Finishes

A fully factory coating is strongly recommended for Accoya sash windows. A variety of colors and finishes have been tested by leading coating manufacturers with outstanding results. Some examples can be seen below but the possibilities are endless.

Tried and tested

Tried and tested

Over the past two decades, Accoya wood has been tested extensively by accredited bodies. Their reports showcase the excellent performance and outstanding benefits of Accoya wood and, in particular, Accoya wooden windows.

For more information and to see the testing reports, head to our windows page.

New wooden sash windows to improve family home

Case Study

New wooden sash windows to improve family home

When Joe and Helen purchased their first family home in Southwest London they were sure of one thing, the whole property needed to undergo a major upgrade. While they had big plans to extend the 3-story home and completely refurbish the property before they moved in, they also knew this was the only opportunity to replace the original rotting wooden sash windows too.

After a huge amount of research online and visiting local joinery showrooms they opted for Accoya. It was recommended to them by friends and also the London joinery company they picked – London Box Sash. It was the most high-performance timber for the window frames and was sustainable too. The couple had faith in London Box Sash as they had been using Accoya for over 10 years and were well trained and knowledgeable about Accoya. The icing on the cake was that the Accoya window frames came with a 50-year warranty – not offered on any other wood. This gave confidence to the couple who decided Accoya windows were going to tick all the boxes.

“We couldn’t be more delighted with our new windows – they look fantastic! And most of all, there are no drafts to contend with anymore. Thank you to the team at London Box Sash for the great service you provided and of course for our Accoya windows!”

Window styles

Accoya wood is very versatile, ideal for many different types of windows to suit any home.

Buy Accoya Sash Windows

Find Accoya sash windows for purchase at a location near you.

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