Accoya Timber is a specially treated softwood that undergoes a process called acetylation. This enhances the timber at a molecular level, improving its resistance to moisture, decay and movement.
The result is a stable and long lasting timber that is well suited to external joinery. Accoya retains the appearance and workability of natural wood while offering performance benefits that support modern building requirements.
Why We Choose Accoya Timber for Wooden Windows
Wooden windows are exposed to changing weather conditions throughout the year. Selecting the right timber is essential for longevity and consistent performance. Accoya Timber offers excellent dimensional stability, helping frames maintain their shape and fit over time.
This stability is particularly important for sash and casement windows, where smooth operation depends on precise tolerances. By manufacturing our wooden windows from Accoya Timber, we help ensure reliable function and reduced maintenance needs.

















