Shaping the landscape of timber innovation.

Accoya represents a revolution in modified, dimensionally stable wood, offering exceptional levels of performance – a product crafted for enduring quality.

Why Accoya?

Exceptional products designed for a lifetime of durability.

Extensive laboratory and field testing by leading institutes around the world (including in New Zealand, USA, UK, Sweden, Malaysia, Indonesia, the Netherlands and Japan) has shown the performance of acetylated wood to be extremely reliable.

Accoya® wood has been thoroughly tested for dimensional stability, durability, paint retention and in-ground conditions to ensure optimal performance. Indeed, it is so reliable that for many years it has been – and continues to be – used by scientists as the benchmark against which other treatments and modifications are measured.

ACETYLATION PROCESS

How it works

 

Wood naturally contains some acetyl groups (that repel water) and a lot of free hydroxyl groups (attract water). Hydroxyls cause wood to swell when wet and shrink when it dries, making it attractive to biological organisms (insects and fungus).

Our process uses acetic anhydride — essentially strong vinegar — to boost the wood’s acetyl content (repel water), essentially replacing the hydroxyl groups, meaning water is no longer an issue. Accoya’s shrink and swell cycle is significantly reduced thereby making it an attractive wood alternative for a variety uses. Nothing is added to the wood that wasn’t already there; we are enhancing what is already there. What’s even better? It is naturally non-toxic making it safe for families, pets, and the planet.

The byproduct of the process, acetic acid, is part of the circular economy, used in other applications, and even turned back into acetic anhydride, offering a closed loop cycle.

A Decade of Durability, showcasing Accoya’s resilience under scrutiny.

Explore Accoya projects from the past decade, offering compelling proof of its exceptional durability in diverse domestic and commercial settings. The outcomes are self-evident, illustrating Accoya’s suitability for applications like windows, doors, decking, and cladding. Durability is just one aspect of Accoya’s allure for both design professionals and consumers.

Warranties

Explore peace of mind with Accoya—discover our unrivaled warranties, a testament to enduring quality and lasting satisfaction. Elevate your expectations; delve into the assurance of up to 50 years of excellence.