All About Accoya

All About Accoya


Among woods, Accoya® is a marvel. Thanks to its low moisture content and the way that it is processed, it’s ideal for outdoor and wet applications, like window frames. It’s resistant to rot and has high strength, making it perfect for a whole raft of external applications.

Accoya® doesn’t come from the “accoya tree” – Accoya® is just the name given to the resulting wood once it has been finished. Rather, all Accoya® products start off life as the Radiata Pine, a type of tree native to California. Though raw Radiata Pine has good construction properties by itself, it can be transformed into Accoya® through a process of acetylation, a wood whose performance far outstrips that of many other hardwoods.

So what are the strengths of Accoya® and why is it so sought after?

Incredible Durability

One of the reasons why Accoya® wood is used so often in outdoor applications, such as external cladding and window frames, is because of its incredible durability. The durability of wood is determined by several things, notably the water and cellulose content. Some species of wood, like teak, are naturally durable, but their durability is known to vary depending on the cut. Accoya® wood, however, is consistently durable, meaning it isn’t a lottery whether or not your wood will last. This is all thanks to the acetylation process, whereby a concentrated form of white vinegar is used to treat the wood, giving it all the properties people desire.


There’s another significant benefit to Accoya® wood: it’s sustainable. The Radiata Pine from which Accoya® is sourced is almost always cultivated. Accoya® wood, therefore, does not result in the destruction of the tropical rainforest or ancient temperate woodlands. The processing of Accoya® is also environmentally neutral. Because only substances that are naturally occurring in nature are used to treat it, it does not add any toxic or polluting chemicals to the environment. On top of that, Accoya® provides superior thermal insulation compared to many woods in its class, making it ideal for people looking to buy sustainable windows.

It Is “Dimensionally Stable”

One of the main reasons why wood fell out of favour as a building material was because of the fact that it is dimensionally unstable. In other words, wood warps and twists over time, which can lead to high maintenance costs. Accoya®, on the other hand, swells and shrinks 70 to 80 percent less than regular hardwoods, making it an ideal long-term construction material.

It’s Easy To Use

If you’re looking for a type of wood that is suitable for window or door frames, you’re in luck. Not only is Accoya® great for external applications, but it’s also easy to machine and finishes beautifully. The reason for this has to do with how the wood is processed. Accoya® wood isn’t just treated on the surface – it’s treated throughout the volume of the wood. As a result, it can be cut and planed, yet retain its amazing properties – great news for builders and customers.

Is it time you tried Accoya® for yourself?

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