Our timber of choice is Accoya although timber can be specified including treated redwood, sapele, oak etc.
For windows and doors, Accoya© wood far surpasses others. Not only does it have extremely low thermal conductivity but it matches or exceeds the durability and dimensionally stability of the best tropical hardwoods... Accoya® low maintenance requirements add to its cost effectiveness and environmental credentials.
Exterior doors and windows should be durable, dimensionally stable (to prevent doors/windows jamming and becoming difficult to open and close in bad weather) and easy to maintain. Accoya® wood meets these criteria and may be used to create simple or complex designs with a choice of coating finishes with typically greatly improved lifetimes.
Accoya wood has been modified right through to the core and the acetylation process does not weaken the original wood, in fact, its hardness is improved, nor does it compromise its bending strength. Therefore combined with exceptional durability and stability Accoya wood can be an ideal material for structural requirements and has been used in bridges and other large structures around the world.
FROM SUSTAINABLE SOURCES
Accoya® wood is the result of decades of research and development that has brought together a long-established, extensively proven wood modification technique and leading-edge patented technology-acetylation to create a high performance wood, ideal for outdoor use and challenging applications.
Accoya® is the world’s leading high technology long life wood.