About Accoya® Wood

Accoya® wood is the result of more than 80 years' research and development that has brought together a long-established and extensively proven wood modification technique - acetylation - and leading-edge proprietary technology to create a high performance wood.

Accoya® wood can be used for virtually anything from windows to doors, decking to cladding, bridges to boats and even for applications that are presently only feasible with non-suitable materials.

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The physical properties of any material are determined by it's chemical structure.

Wood contains an abundance of chemical groups called "free hydroxyls". Free hydroxyl groups absorb and release water according to changes in the climate to which wood is exposed. This is the main reason why wood swells and shrinks.

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Acetylation effectively changes the free hydroxyls within the wood into acetyl groups.

This is done by reacting the wood with acetic anhydride, which comes from acetic acid. When the free hydroxyl group is transformed to anacetyl group, the interaction between free hydroxyl and water is elimnated, rendering the wood more dimensionally stable and extremely durable.

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