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Accoya® modified wood cladding


With its unrivalled performance benefits, Accoya® is ideal for projects where a flawless painted finish and clean, crisp lines are desired. Accoya® is created by modifying Radiata Pine, through the use of a non-toxic acetylation process. This uniformly attractive, consistently durable and dimensionally stable product is fully sustainable and will last a lifetime.

At a glance


Radiata Pine


New Zealand/Chile

Modified timber

Yes. Radiata Pine is modified through a non-toxic acetylation process to create a high-performance timber with superior stability and durability.


Accoya® wood is available in four grades (A1, A2, A3 and B). We supply only the cleanest grade – A1.


Uncoated Accoya® is a cream/light straw colour, which will take on a silvery-grey appearance when left to weather naturally


Sustainably sourced from well managed forests (FSC® or PEFC certified).

SiOO:X coating

Not suitable for coating with SiOO:X.


Outstanding durability (Class 1 - 3 BS EN 350-2) due to modification.

Paint coating

Accoya® is the ultimate surface for factory-coating with opaque or translucent paint. Virtually no shelling, cracking, checking or fissuring will occur. Coatings can be expected to last up to three times longer than on unmodified timbers, substantially reducing maintenance requirements.


Primarily clear of knots with little figuring. Most commonly supplied painted due to Accoya’s exceptional coating performance.


Medium - classified by BS EN 350-2 as approximately 592 Kg/m³ at a moisture content of approximately 8%.

Fire retardant coating

Can be treated with fire retardant.


Suits projects where a flawless painted finish and clean, crisp lines are desired.


Excellent stability; swelling and shrinkage is virtually eliminated in Accoya®.

Surface finishes

Can be produced in a planed or wire brushed finish.

See how Accoya® compares with other species

Expert View

The dimensional stability properties of Accoya® are unrivalled, making it the ideal substrate for low maintenance, decorative paint finishes. Boards display subtle figuring with very few knots resulting in a clean and contemporary aesthetic. With the introduction of our new RW119 Performance profile, Accoya® will now be a viable option for a wider scope of projects.
Image of Morgan Corrieri Morgan Corrieri Cladding & Decking Sales Manager

Virtual samples

Browse and compare virtual Accoya® samples from the comfort of your home or office; the quickest and most sustainable way to view our range of samples. Click on the 3D icon and tilt or zoom in on the sample to view the texture, grain and colour of the boards or use the highlight feature to see how light and shade affect the aesthetic.

Profile options

View our range of Accoya® face-fix and secret-fix profiles, including our new 15mm Performance Profile, which offers the same outstanding performance of Accoya® at a more affordable price.

We offer a limited range of stock profiles, available in select finishes for projects which require a shorter lead time. Please note that additional processes like coatings will extend lead times on these products.

Surface finishes

Learn more about our range of cladding surface finishes; from smooth, planed boards, to textured finishes specifically developed to enhance paint coating performance.


Planed boards are run through our planing mill to create a smooth, dressed finish.
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Wire brushed

Wire brushing accentuates the grain and creates a beautifully textured surface.
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Coated options

Accoya® is the ultimate surface for factory-coating with opaque or translucent paint. By combining the impressive benefits of factory coating with the incredible stability and durability of Accoya®, remarkable results can be achieved.

Painted cladding

A coloured paint finish in opaque and translucent options.
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Recommended fixings

How timber is fixed is fundamental to its long-term performance in terms of both appearance and durability. These are the recommended fixings for use with Accoya®


Secret fix

An innovative secret-fix solution for open rainscreen cladding.

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L-GoFix® A2 Screws

Face fix

Cladding screw for effective fixing and neat detailing.

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Russwood Battening System


Environmentally friendly, engineer-assessed, method of fixing timber cladding.

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Face fix

Compensation strip designed to prevent direct contact between timber elements.

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F-BohrFix® ZB Screws

Secret fix

For optimal fastening of tongue and groove cladding.

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L-BohrFix® A4 Screws

Face fix

A highly corrosion resistant screw for special applications.

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Frequently asked questions

How much is Accoya® cladding?

Uncoated Accoya® cladding starts from £99 per m² excluding VAT. Prices are based on a minimum quantity of 50 m² and coatings add an additional cost of approximately £20-25 per m². Prices are subject to change due to the fluctuating prices of timber and should be used as a guide only. For the most up-to-date prices please contact our sales team.

Can you help with NBS Specification?

Yes, Russwood’s dedicated Architect Liaison Team can assist architects with selecting the best timber cladding species, coatings and fixings for their projects, ensuring both the performance and aesthetic requirements are met. We can also assist with writing the H21 (external timber cladding) National Building Specification (NBS). Find out more about the services we offer to architects.

How do I order Accoya® cladding?

To receive a quotation or to place an order, get in touch with our Technical Sales Team who will be happy to assist.

Can I order a sample of Accoya® cladding?

The quickest way and most sustainable way to view cladding samples is to browse our range of Virtual 3D samples. Physical samples can be ordered by contacting our sales team who can assist with selecting the most suitable cladding for your project and send out appropriate samples. 

How does Accoya® compare to other timber species?

Our handy Cladding Comparison table allows you to compare species information and timber properties at a glance.

Where do you deliver to?

We offer UK wide delivery on all of our products. Please contact our sales team for a quote.