Tricoya
Accoya
The Revolutionary High-Performance MDF Panel
For decades, the limitations of traditional MDF panels have been clear: exposure to moisture or outdoor elements meant guaranteed failure. Standard MDF simply wasn't built to last in the challenging Australian climate.
That era is over.
Britton Timbers is proud to supply Accoya Tricoya, the breakthrough in wood-based panels. Tricoya takes all the design freedom and ease of-use of MDF and combines it with the legendary durability and stability of Accoya wood. This is an MDF panel that can be used anywhere.
Why Choose Accoya Tricoya?
Tricoya is manufactured using the same proprietary acetylation process as Accoya timber. This non-toxic process permanently modifies the wood’s structure, creating a panel with unmatched performance and stability.
Extreme Durability & Rot Resistance
Tricoya is classified as Class 1 durable (EN 350-2), making it one of the most durable wood products on earth. It is virtually rot-proof and resistant to fungal decay, even in the most challenging wet or in-ground conditions.
Unrivalled Dimensional Stability
This is where Tricoya truly shines. Swelling and shrinking are dramatically reduced, regardless of humidity or direct water exposure. This means paint finishes last longer, and complex joinery remains precise without warping or splitting.
The Ultimate 50-Year Warranty
Peace of mind is guaranteed. Accoya Tricoya comes with an incredible 50-year warranty when used above ground and a 25-year warranty for in-ground applications. It’s a promise of performance you can build on.
Complete Design Freedom
All the benefits of MDF, with none of the weaknesses. Tricoya can be machined, routed, CNC cut, and painted just like standard MDF, allowing for limitless creative and architectural possibilities.
The Ideal Solution for Australian Conditions
- External Cladding & Facades: Create stunning, stable, and durable facades that resist coastal spray, harsh sun, and heavy rain.
- Wet Internal Areas: The perfect substrate for bespoke joinery in bathrooms, laundries, and ensuites.
- Doors & Windows: Use it for stable and durable window frames, shutters, and complex exterior door designs.
- Outdoor Kitchens & Joinery: Build beautiful outdoor cabinets and furniture that won't swell or delaminate.
- Signage & Mouldings: Create intricate and long-lasting external architectural mouldings, trim, and signage.
Technical Specifications
- Durability: Class 1 (EN 350-2) – comparable to teak
- Warranty: 50 years (above ground), 25 years (in-ground/freshwater)
- Workability: Easily machined, cut, and routed with standard equipment
- Sustainability: Sourced from sustainable FSC® certified forests
- Finishing: Provides a perfect, stable substrate for paints and coatings, leading to lower maintenance.
Tricoya can be cut, coated, sanded, glued, machined and fastened the same as any other high performing wood fiberboard – allowing users all the freedom associated with MDF. The Tricoya® difference is that this can now be done for the outside and with confidence.
| THICKNESS | STOCK SIZE | SPECIAL ORDER |
|---|---|---|
| 6mm | 1220×2440 | N/A |
| 9mm | 1220×2440 | 3050 |
| 12mm | 1220×2440 | 3050 |
| 15mm | 1220×2440 | 3050 |
| 18mm | 1220×2440 | 3050 |
Other sizes may be produced upon request and typically associated with a minimum order quantity. Custom thicknesses between 5mm, and 18mm, can be produced for quantities of at least one container.
What is Accoya Wood?
Accoya modified wood has become the lumber industry benchmark when it comes to performance and sustainability. No other wood offers the same combination of durability, stability and versatility. Sustainably sourced, and with a low total lifetime carbon cost, Accoya actively contributes to a circular, bio-based economy and is one of the few truly sustainable building materials.
Accoya is produced in both Kingsport, USA and Arnhem, the Netherlands. In this video, we take a closer look at the groundbreaking science behind Accoya wood. Through a precise acetylation process using acetic anhydride, combined with just the right heat and pressure, we increase moisture-resistant acetyl groups and reduce the water-attracting hydroxyl groups. This unique patented technology turns fast-growing, sustainable wood into an ultra-high performance building material.
Where Accoya Shines
Accoya Color Grey
Accoya
Natural Wood.
Engineered Performance.
Iconic Grey Design.
Accoya Colour Grey, supplied by Britton Timbers, combines the authentic warmth and texture of real wood with full-colour performance engineered for Australia’s climates. With its deep grey hue coloured through to the core and the advanced acetyl-modification process of Accoya, this product delivers premium aesthetics and enduring durability, whether used on coastal homes, pool surrounds, or architectural façades.
- Coloured Through to Core – The rich grey tone is infused throughout every board, meaning cuts, edges and weathering maintain the same premium look.
- Exceptional Durability & Stability – Built for Australia’s sun, humidity and coastal exposure: minimal movement, long-lasting performance, and peace-of-mind warranties.
- Low-Maintenance Elegance – With the colour embedded and the wood engineered for minimal wear, this product requires significantly less upkeep than conventional exterior timbers.
- Sustainably Sourced & Non-Toxic – FSC® certified and crafted via a non-toxic process, Accoya supports green building practices while delivering high-end aesthetics and performance.
Backed by a 25-year warranty for decking and a 50-year warranty for cladding, Accoya Colour Grey delivers confidence that lasts. Designed to perform in Australia’s coastal, tropical and high-UV environments, it offers outstanding resistance to rot and weathering for decades of reliable service.
Accoya Colour Grey is engineered to stay true to form. It resists swelling, shrinking and warping — ensuring boards remain smooth, even and secure through Australia’s seasonal extremes. That means tight joins, lasting alignment and consistent visual appeal year-round.
The rich grey tone runs through the entire depth of each board — not just the surface. This ensures consistent colour even after cutting, machining or wear, meaning less maintenance and a beautifully natural look that won’t fade unevenly over time.
Manufactured from FSC®-certified softwood and modified through a non-toxic process, Accoya Colour Grey is safe for people, pets and the planet. It’s an environmentally responsible choice that meets Australia’s growing demand for sustainable, low-impact building materials.
Solid-coloured wood
What lies behind the dyeing process of Accoya Color Grey? What makes coloured-through wood so special?
Accoya Color Grey is grey-dyed Accoya wood. Being coloured-through means that the wood is dyed all the way from the surface to the core. This has the advantage that the grey wood can be processed (sawed, planed, etc.) without losing its consistent anthracite-grey colour.
The colour cannot wear off or peel away as it can with surface coatings, which is a significant benefit.
The dyeing of Accoya Color Grey is the result of years of research and development. Following the acetylation process, the newly produced Accoya wood undergoes an additional dyeing process. An organic, non-toxic pigment is used for colouring.
The Danish Technological Institute, as an independent testing body, has examined Accoya Color Grey and confirmed that no harmful elements are used. Thus, the wooden terraces are completely safe for both people and the environment.
Finishes & Design Options
Britton Timbers provides Accoya Colour Grey in a variety of profiles, lengths and surface textures to suit both residential and commercial projects. The product arrives pre-grey, so whether you wish to keep it natural or apply a clear protective coating, you’ll benefit from the consistent colour and excellent coating performance over time.
What is Accoya Wood?
Accoya modified wood has become the lumber industry benchmark when it comes to performance and sustainability. No other wood offers the same combination of durability, stability and versatility. Sustainably sourced, and with a low total lifetime carbon cost, Accoya actively contributes to a circular, bio-based economy and is one of the few truly sustainable building materials.
Accoya is produced in both Kingsport, USA and Arnhem, the Netherlands. In this video, we take a closer look at the groundbreaking science behind Accoya wood. Through a precise acetylation process using acetic anhydride, combined with just the right heat and pressure, we increase moisture-resistant acetyl groups and reduce the water-attracting hydroxyl groups. This unique patented technology turns fast-growing, sustainable wood into an ultra-high performance building material.
Where Accoya Shines
For commercial builds where once steel and concrete would be the only option, Accoya now delivers a unique combination of structural stability, design flexibility and the natural beauty of wood.
- High usability with boards that arrive straight and stay straight.
- So dimensionally stable that even harsh environments will not impact installation.
- Significantly reduced swelling keeps this project looking good with minimal maintenance.
Accoya solves the problem of deterioration in any climate, giving you the confidence that you made the right choice.
- 50 year warranty for ABOVE ground use.
- 25 year warranty for IN GROUND or FRESH WATER USE.
- All products have a 60+ year service life.
Accoya has the environmental credentials to make a bold commitment to build any project sustainably.
- Peace of mind with the knowledge that all Accoya comes from FSC® certified forests.
- One of the few building materials certified Cradle to Cradle Gold.
- Non toxic and 100% recyclable.
Accoya is the ultimate workable substrate trusted by craftsman to deliver in any product application.
- Exceptionable machinability, easy to work with, no special tools required.
- Increased strength and density, can be used in structural applications.
- Leave natural for exquisite grain patterns or create a flawless finish of your choice.
For More Information visit
Accoya General Fixings
For Accoya Fixings please view our SPAX page.
Accoya Speciality Fixings
Timber to metal or aluminium please visit our Anchormark page.
Accoya Joinery
Accoya
Natural Timber Craftsmanship.
Engineered to Last.
Accoya joinery supplied by Britton Timbers brings together the authentic warmth of real wood with advanced performance engineered for Australian conditions. Through its unique acetylation process, Accoya timber resists decay, warping and movement — making it ideal for external doors, window frames and high-spec joinery where durability and finish matter.
- Exceptional durability & warranty – With a 50-year above-ground warranty on joinery applications, Accoya gives you long-term peace of mind, even in demanding climates
- Superior stability – Accoya joinery is highly dimensionally stable, so frames and doors open and close smoothly year-round, even in coastal humidity or intense sunlight
- Low maintenance, lasting finish – Thanks to its stable nature, coatings adhere and last longer on Accoya. That means fewer repaint/reseal cycles and less upkeep in the Australian environment
- Sustainably sourced & environmentally responsible – Manufactured from FSC® certified forests and processed without toxic preservatives, Accoya supports green building practices and reduces long-term environmental impact.
Backed by a 50-year above-ground warranty, Accoya joinery delivers long-term confidence for doors, windows and exterior applications exposed to Australia’s harsh conditions. You can rely on proven performance that stands the test of time.
Accoya provides an exceptional surface for coatings and stains, ensuring a flawless, lasting finish. Paints and stains adhere more effectively and maintain their colour longer — giving joinery a premium look that endures under Australia’s intense sun and temperature extremes.
Thanks to its remarkable stability and resistance to weathering, Accoya joinery requires minimal maintenance over its lifetime. Fewer repainting cycles, less swelling and smoother operation mean reduced upkeep and more time between maintenance intervals.
Accoya joinery is engineered to stay true to form. Doors and windows open and close smoothly year-round without sticking, warping or gaps — even in coastal or humid environments where traditional timbers struggle.
Accoya wood joinery last a lifetime
What is Accoya Wood?
Accoya modified wood has become the lumber industry benchmark when it comes to performance and sustainability. No other wood offers the same combination of durability, stability and versatility. Sustainably sourced, and with a low total lifetime carbon cost, Accoya actively contributes to a circular, bio-based economy and is one of the few truly sustainable building materials.
Accoya is produced in both Kingsport, USA and Arnhem, the Netherlands. In this video, we take a closer look at the groundbreaking science behind Accoya wood. Through a precise acetylation process using acetic anhydride, combined with just the right heat and pressure, we increase moisture-resistant acetyl groups and reduce the water-attracting hydroxyl groups. This unique patented technology turns fast-growing, sustainable wood into an ultra-high performance building material.
Where Accoya Shines
For commercial builds where once steel and concrete would be the only option, Accoya now delivers a unique combination of structural stability, design flexibility and the natural beauty of wood.
- High usability with boards that arrive straight and stay straight.
- So dimensionally stable that even harsh environments will not impact installation.
- Significantly reduced swelling keeps this project looking good with minimal maintenance.
Accoya solves the problem of deterioration in any climate, giving you the confidence that you made the right choice.
- 50 year warranty for ABOVE ground use.
- 25 year warranty for IN GROUND or FRESH WATER USE.
- All products have a 60+ year service life.
Accoya has the environmental credentials to make a bold commitment to build any project sustainably.
- Peace of mind with the knowledge that all Accoya comes from FSC® certified forests.
- One of the few building materials certified Cradle to Cradle Gold.
- Non toxic and 100% recyclable.
Accoya is the ultimate workable substrate trusted by craftsman to deliver in any product application.
- Exceptionable machinability, easy to work with, no special tools required.
- Increased strength and density, can be used in structural applications.
- Leave natural for exquisite grain patterns or create a flawless finish of your choice.
For More Information visit
Accoya General Fixings
For Accoya Fixings please view our SPAX page.
Accoya Speciality Fixings
Timber to metal or aluminium please visit our Anchormark page.
The Decking Collection by Accoya
The Decking Collection by Accoya
The Decking Collection by Accoya is the pinnacle of outdoor timber innovation. Through a proprietary acetylation process, Accoya transforms fast-growing, certified sustainable wood into a high-performance decking product that outperforms conventional timber.
Engineered to endure Australia’s diverse climates—from coastal humidity to dry inland heat—The Decking Collection by Accoya resists swelling, shrinking, and warping, ensuring your outdoor space remains pristine year after year.
Whether you’re designing a family deck, pool surround or commercial boardwalk, Accoya delivers exceptional stability, durability and sustainability.
- Superior Stability – The Decking Collection by Accoya offers exceptional dimensional stability, minimising expansion and contraction, helping maintain a smooth, even surface over time
- Enhanced Durability – The acetylation process increases resistance to rot, decay, and insect attack, extending the lifespan of your deck
- Minimal Maintenance – Designed for longevity, The Decking Collection by Accoya requires little upkeep. Occasional cleaning is sufficient; sanding, staining, or sealing is optional
- Barefoot Comfort – This decking remains cool underfoot, even on hot days, and is less prone to splintering, providing a comfortable walking surface.
- Sustainable Choice – Made from sustainably sourced wood, The Decking Collection by Accoya is 100% recyclable and has a low carbon footprint, contributing to a more sustainable built environment.
The Decking Collection by Accoya comes with a transferable 50-year above-ground warranty, giving you complete confidence in its long-term performance and durability, no matter the Australian climate.
Thanks to its acetylation process, this decking resists rot, decay, and warping, meaning it requires minimal upkeep. Occasional cleaning is all that’s needed to keep your deck looking pristine.
Designed for comfort, The Decking Collection by Accoya stays cooler underfoot than traditional timber and is naturally smooth and splinter-resistant—perfect for barefoot living in Australian homes.
The acetylation process enhances durability without harmful chemicals. Safe for families and pets, this sustainable timber is also FSC® certified, ensuring it comes from responsibly managed forests.
Barefoot Friendly Wood Decking
Experience the ultimate in comfort with The Decking Collection by Accoya. Its naturally smooth, splinter-resistant surface stays cool even on the hottest Australian days, making it perfect for barefoot living around pools, decks, and outdoor entertaining areas. Durable, safe, and comfortable, it’s decking designed for real life.
The Decking Collection by Accoya Brochures
What is Accoya Wood?
Accoya modified wood has become the lumber industry benchmark when it comes to performance and sustainability. No other wood offers the same combination of durability, stability and versatility. Sustainably sourced, and with a low total lifetime carbon cost, Accoya actively contributes to a circular, bio-based economy and is one of the few truly sustainable building materials.
Accoya is produced in both Kingsport, USA and Arnhem, the Netherlands. In this video, we take a closer look at the groundbreaking science behind Accoya wood. Through a precise acetylation process using acetic anhydride, combined with just the right heat and pressure, we increase moisture-resistant acetyl groups and reduce the water-attracting hydroxyl groups. This unique patented technology turns fast-growing, sustainable wood into an ultra-high performance building material.
Where Accoya Shines
For commercial builds where once steel and concrete would be the only option, Accoya now delivers a unique combination of structural stability, design flexibility and the natural beauty of wood.
- High usability with boards that arrive straight and stay straight.
- So dimensionally stable that even harsh environments will not impact installation.
- Significantly reduced swelling keeps this project looking good with minimal maintenance.
Accoya solves the problem of deterioration in any climate, giving you the confidence that you made the right choice.
- 50 year warranty for ABOVE ground use.
- 25 year warranty for IN GROUND or FRESH WATER USE.
- All products have a 60+ year service life.
Accoya has the environmental credentials to make a bold commitment to build any project sustainably.
- Peace of mind with the knowledge that all Accoya comes from FSC® certified forests.
- One of the few building materials certified Cradle to Cradle Gold.
- Non toxic and 100% recyclable.
Accoya is the ultimate workable substrate trusted by craftsman to deliver in any product application.
- Exceptionable machinability, easy to work with, no special tools required.
- Increased strength and density, can be used in structural applications.
- Leave natural for exquisite grain patterns or create a flawless finish of your choice.
For More Information visit
Accoya General Fixings
For Accoya Fixings please view our SPAX page.
Accoya Speciality Fixings
Timber to metal or aluminium please visit our Anchormark page.
Accoya Cladding
Accoya
Natural Timber Beauty with Long-Term Performance
Accoya cladding, supplied by Britton Timbers, brings together the warmth of real wood and the endurance of advanced timber technology. Manufactured through a unique acetylation process, Accoya delivers outstanding dimensional stability and resistance to decay — even in Australia’s toughest climates.
From contemporary façades to coastal homes and commercial buildings, Accoya offers a premium timber finish that stays true to form and colour for decades.
- Proven durability – Guaranteed for 50 years above ground.
- Engineered for Australia – Prepared for extreme sun, humidity or coastal exposure.
- Design versatility – Available in a variety of profiles and finishes to suit modern and traditional styles.
- Sustainably sourced – FSC® certified and fully recyclable.
- Trusted national supply – Distributed through Britton Timbers, with expert technical support and product knowledge.
Accoya wood cladding comes with an industry-leading warranty, giving Australian builders and homeowners peace of mind. You can rely on its performance for decades, knowing it’s built to withstand the country’s diverse climates.
Bring your design vision to life with Accoya’s versatile finishes, including Shou Sugi Ban and customised board sizes. Left untreated, it develops a natural, elegant patina; if coated, Accoya provides an exceptionally smooth and durable surface, perfect for long-lasting aesthetics.
Engineered to resist rot, warping and swelling, Accoya external cladding stays true to its shape over time. Its dimensional stability makes it a cost-effective, low-maintenance choice for projects requiring precision and long-term reliability.
Accoya cladding meets the highest environmental standards. Made from FSC® certified timber, it is 100% non-toxic, free from biocides or harmful chemicals, and fully sustainable — helping you satisfy even the strictest planning and building requirements.
Accoya Cladding Downloads
What is Accoya Wood?
Accoya modified wood has become the lumber industry benchmark when it comes to performance and sustainability. No other wood offers the same combination of durability, stability and versatility. Sustainably sourced, and with a low total lifetime carbon cost, Accoya actively contributes to a circular, bio-based economy and is one of the few truly sustainable building materials.
Accoya is produced in both Kingsport, USA and Arnhem, the Netherlands. In this video, we take a closer look at the groundbreaking science behind Accoya wood. Through a precise acetylation process using acetic anhydride, combined with just the right heat and pressure, we increase moisture-resistant acetyl groups and reduce the water-attracting hydroxyl groups. This unique patented technology turns fast-growing, sustainable wood into an ultra-high performance building material.
Where Accoya Shines
For commercial builds where once steel and concrete would be the only option, Accoya now delivers a unique combination of structural stability, design flexibility and the natural beauty of wood.
- High usability with boards that arrive straight and stay straight.
- So dimensionally stable that even harsh environments will not impact installation.
- Significantly reduced swelling keeps this project looking good with minimal maintenance.
Accoya solves the problem of deterioration in any climate, giving you the confidence that you made the right choice.
- 50 year warranty for ABOVE ground use.
- 25 year warranty for IN GROUND or FRESH WATER USE.
- All products have a 60+ year service life.
Accoya has the environmental credentials to make a bold commitment to build any project sustainably.
- Peace of mind with the knowledge that all Accoya comes from FSC® certified forests.
- One of the few building materials certified Cradle to Cradle Gold.
- Non toxic and 100% recyclable.
Accoya is the ultimate workable substrate trusted by craftsman to deliver in any product application.
- Exceptionable machinability, easy to work with, no special tools required.
- Increased strength and density, can be used in structural applications.
- Leave natural for exquisite grain patterns or create a flawless finish of your choice.
For More Information visit
Accoya General Fixings
For Accoya Fixings please view our SPAX page.
Accoya Speciality Fixings
Timber to metal or aluminium please visit our Anchormark page.
Accoya
Accoya
Ultra-High Performance Sustainable Wood
Accsys transforms fast-growing, certified sustainable wood into Accoya wood through its proprietary acetylation process.
The result is a high performing product with sustainability credentials that exceed those of man-made, intensely resource depleting and heavily carbon-polluting alternatives.
This gives the world the choice to build sustainably, offering new opportunities for the built environment.
Accoya Oyster Farming
Marine Use for Oyster Farming
A sustainable revolution
Oyster Farming
Accoya seed trays and posts have been used in Australia oyster farms since 2015 with success.
Accoya will not visibly swell, shrink or distort in this application which is why it comes with a guaranteed 10 year warranty for ocean exposure.
Accoya has been used Globally in volume for many applications since 2007.
Accoya is non toxic, It is safe for people, oysters and the environment.
It comes from fast growing sustainable forests, helping to meet global environmental challenges.
FSC and Cradle to Cradle Certified.
Accoya Posts
Accoya posts after installation 5 years ago.
Performance
- Highly Stable
- Highly Durable
- Insect Resistant
- 10 year warranty for ocean exposure
Sustainability
- Low CO2 Emissions
- Sustainably Sourced
- Non Toxic
- Low Environmental Impact
