The special treatment - Accoya

You may have heard the term ‘Accoya’ in relation to bespoke joinery and carpentry but it’s not always clear what it is, or what it’s used for.

So, what is Accoya?

Accoya is a modified timber which comes from an original timber species (Radiata Pine) which is then put through an Acetylation process. This process changes its molecular structure making it more durable and stable with rot resistance superior to other timbers.

What is Accoya used for?

With it being a hardwearing timber, Accoya lends itself well to external joinery such as doors, windows and bridges where the wood cannot distort and must remain dimensionally stable. For these type of projects Accoya is perfect because swelling and shrinkage is reduced by over 75%. Due to its class 1 durability, it is also able to withstand weathering much better than traditional untreated timbers.

What is so good about it?

There are a number of benefits of using Accoya. Due to the treatment it receives to make it more durable it has minimal thermal movement and an expected lifespan of 60 years also due to its rot resistance. In terms of carbon footprint, it performs better than metals, plastics and unsustainably sourced timber and is also manufactured from sustainable sources.

Thanks to its stability, the optimum factory spray finish can be achieved when coating Accoya which out performs site applied brushed coatings.

Tricoya wood elements technology

Part of the Accoya family is Tricoya wood elements technology. This is essentially an ‘Accoya MDF’ made using acetylated wood chips, particles and fibres.

The combined strength and flexibility of this wood allows us to shape and curve the timber whilst eliminating potential issues, such as splitting. We are also able to build incredibly durable timber structures to withstand outdoor and wet conditions. This material is perfect for our more delicate bespoke joinery work, such as curved window frames and glazing bars.