Accoya Wood: A Guide

Accoya timber is produced using a wood modification process that enhances sustainably sourced radiata pine. Through a non-toxic acetylation treatment, the timber is modified at a cellular level, permanently improving its natural properties.

This process increases durability, reduces movement caused by moisture and improves resistance to decay and weathering. The result is a stable, long-lasting timber that performs reliably in external joinery applications such as sash windows and doors.

Accoya timber offers several practical advantages for windows and doors:

• Dimensional stability
  Accoya is highly stable and less affected by moisture changes. This reduces the risk of shrinking, swelling or sticking over time.

• Resistance to decay
  The modification process makes the timber resistant to rot, fungi and insect attack, supporting long-term durability.

• Sustainably sourced
  Accoya is manufactured from responsibly sourced timber and is FSC certified. Its durability also reduces the need for frequent replacement.

• Long-term performance
  Accoya is supplied with a 50-year warranty for above-ground use and 25 years in ground contact, reflecting its durability in external applications.

• Improved coating performance
  Paint and coatings last longer on Accoya due to its stability, helping maintain appearance and reducing maintenance.

• Weather resistance
  It performs well in exposed conditions and is less prone to movement caused by temperature and moisture fluctuations.

Compared with traditional timber, Accoya typically requires less frequent repainting due to its improved stability. This can reduce ongoing maintenance over time.

Routine cleaning with mild detergent and a soft brush will help maintain the finish of your windows and doors. For long-term performance, repainting or re-staining is generally recommended every five to seven years, depending on exposure and the type of coating used.

Because Accoya is more stable, coatings tend to adhere well and last longer, helping maintain appearance and reduce maintenance intervals.