Accoya®
Acetylated Radiata Pine
The Premium Moisture-Resistant Timber
Accoya is radiata pine that has been modified via acetylation - a non-toxic chemical process - to significantly improve its dimensional stability, durability, and coating performance.
WHY WE FAVOR ACCOYA FOR EXTERIOR JOINERY
Exceptionally durable:
In tests conducted by Scion, Accoya outperformed naturally durable hardwoods (cedar, cypress, teak) and even preservative-treated radiata in fungal decay trials over years.
Class 1 durability:
Accoya is classified at the highest durability category.Outstanding dimensional stability:
Its swelling and shrinkage under moisture changes is extremely low (radial and tangential movement minimal), which helps coatings stay intact longer.Coatings & paint adhesion excellence:
Because it moves little, paint layers are under less stress, reducing cracking, peeling, and maintenance frequency.Warranty & service life potential:
Independent studies, including TRADA reviews, suggest Accoya joinery can last 60–70 years or more in favorable conditions if maintained.Sustainability:
Accoya is derived from sustainably sourced wood, modified without toxic preservatives, and fully recyclable.
When to use Accoya
Use Accoya for the most exposed, weather-sensitive joinery e.g. large exterior doors, window sashes in exposed facades, coastal building elevations. It’s ideal where long life, minimal maintenance, and premium paint quality are demanded.
Considerations & cost
Use Accoya for the most exposed, weather-sensitive joinery e.g. large exterior doors, window sashes in exposed facades, coastal building elevations. It’s ideal where long life, minimal maintenance, and premium paint quality are demanded.