Accoya 18 × 140 mm

One of the world’s most durable timbers for exterior applications, engineered for long-term performance.

🏗 Durability class: 1 – service life up to 50 years
📐 Outstanding dimensional stability – minimal swelling or shrinkage
🌱 Environmentally friendly – low CO₂ footprint and 100% recyclable
🎨 Light colour with a refined, natural grain
🧱 Low maintenance – ideal for façades, decking and wall cladding
🪚 Easy to machine – suitable for both hand and power tools

Accoya is globally recognised as one of the most durable wood solutions for outdoor use. Through a unique acetylation process, in which the timber is treated with natural acetic acid, the material is modified at a molecular level. This results in exceptional dimensional stability and a service life of up to 50 years above ground.

The 18 × 140 mm profile is four-side planed and perfectly suited for open vertical cladding, fencing and other dimensionally stable exterior applications. Thanks to its light colour, fine grain and smooth finish, Accoya offers a versatile aesthetic that complements both modern and timeless architecture.

What is Accoya?

Accoya is a revolutionary modified wood made from Radiata Pine sourced from sustainably managed forests. By esterifying the timber with natural acetic acid, the cell structure is permanently enhanced. This makes Accoya highly resistant to moisture, fungi, insects and distortion, without the use of harmful chemicals.

The result is a bio-based timber that outperforms many tropical hardwoods in durability and stability, making it the ideal choice for those seeking a sustainable, aesthetic and future-proof solution.

Looking for other lengths or widths? Feel free to contact us for a bespoke solution.