- ACCOYA APPROVED MANUFACTURER
Accoya timber, crafted to perform beautifully
Accoya combines the warmth and workability of timber with exceptional stability and durability.
As an Approved Manufacturer, Nicholson uses Accoya to create bespoke windows, doors and joinery designed around your property and made for years of dependable use.
- WHAT IS ACCOYA?
Natural timber, transformed for greater stability
Accoya starts life as radiata pine, a fast-growing, highly renewable timber resource.
Through a process called acetylation, the wood is modified to reduce the swelling, shrinking and distortion that can affect ordinary timber. It remains natural wood—warm, workable and versatile—but with greater stability and durability for demanding exterior joinery.
This makes Accoya particularly well suited to made-to-measure windows, doors and architectural details where appearance, reliable operation and long-term performance all matter.
The benefits of Accoya
Performance
Accoya is highly stable and durable, helping windows and doors retain their shape and operate reliably through changing weather.
- Reduced swelling and shrinking
- Durable in exposed exterior use
- Naturally insulating
Finish
Because the timber moves less, paint and stain remain better supported, helping detailed profiles and factory finishes look good for longer.
- Ideal for painted joinery
- Suitable for paint and stain
- Lower ongoing maintenance
Sustainability
Accoya is made from responsibly sourced timber & modified without plastic or resin, creating a durable wood product with a low environmental impact.
- FSC®-certified sources
- Non-toxic modified timber
- Designed for a long working life
- MATERIALS CHOSEN WITH PURPOSE
Why we use Accoya
At Nicholson, we do not choose materials because they are fashionable—or assume that one timber is right for every project.
The decision depends on the property, the exposure, the desired finish and the way the completed joinery needs to perform.
Accoya is often our preferred material for painted external windows, doors and selected bespoke joinery. Its stability helps opening parts work consistently, supports precise detailing and gives factory-applied coatings a dependable base.
It is equally at home in carefully reproduced period joinery and clean contemporary designs, allowing us to focus on proportion and character without ignoring practical performance.
Accoya will not be the answer to every brief. Our role is to recommend it where its qualities genuinely add value to the project.
- AN ACCOYA APPROVED MANUFACTURER
Why choose Nicholson?
Accoya provides the material performance. Nicholson determines how that material becomes part of your home.
As an Accoya Approved Manufacturer, we combine specialist material knowledge with four generations of joinery experience. Where Accoya is selected, the project is surveyed, detailed, manufactured and factory finished through our Warwickshire workshop before being installed with care.
From reproducing original window details to creating a completely individual entrance door, we consider the design, material, finish and final fit as one joined-up project.
That means you are not simply choosing Accoya. You are choosing Nicholson’s judgement and responsibility for the finished result.
- ACCOYA PROJECT REVIEWS
Recommended by clients who chose Nicholson for their Accoya project
Homeowners have trusted Nicholson with Accoya windows, front doors, French doors, bi-fold doors and one-off designs for properties old and new.
Their feedback speaks to thoughtful design, beautifully made joinery and installation carried out with precision, professionalism and respect for the home.