FWPA Building Innovations

TITAN Wood/Accoya – Chemically modified wood

Acetylation protects wood by actually changing its chemical structure: wood technologists describe the effect of acetylation as being analogous to effectively creating a “new wood”. They argue that acetylated wood should be considered by consumers as an entirely new species, so different are its properties from the underlying species from which it is made. Durability can be “upgraded” to the durability of the most durable hardwoods, the swelling and shrinking due to the change in moisture content is reduced dramatically.


The principle benefits are the increase in natural durability and the reduction in shrinkage and swelling, which increases the lifetime of finishes and broadens the scope of appliaction of certain timber species.


Limitations are in the field of structural use. Limited research carried out on elements of structural sizes show some reduction in strength properties at the characteristic level.


Any product or system that can markedly improve the durability and stability of wood at an economical cost and without the need for 'preservative' chemicals, should have significant potential.




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Forest and Wood Products Australia Limited (FWPA), a not for profit company, is the Australian forestry and wood  products industry’s service provider, investing in research and development, and providing research results and generic promotions to the Australoian industry. FWPA aims to improve the competitiveness and sustainability of the Australian forest and wood products industry through innovation, investment in effective and relevant R&D and communication of the results to stakeholders. Read more about FWPA at www.fwpa.com.au

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Forest and Wood Products Australia
Level 11, 10-16 Queen Street
Melbourne VIC 3000 Australia

Phone: +61 3 9927 3200
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