ACCOYA® - Grad-system
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ACCOYA®

ACCOYA®

Acetylation elevated to its peak of excellence

The result of several decades of research, Accoya® is the outcome of a patented acetylation process that profoundly transforms the molecular structure of Radiata Pine, sourced from certified forests, to create a material with performance comparable to the densest woods. Marketed since 2007 by Accsys, it has quickly established itself as the global benchmark for premium modified wood, praised by the most demanding architects and project owners.

77237

Accoya sold 77,237 m³ of wood in its 2025/2026 fiscal year, a historic record, representing a 21% growth in one year.

Leading innovation

World leader in acetylated wood thanks to proprietary technology that transforms fast-growing woods into high-performance materials.

A material choice, an environmental act

Accoya replaces high carbon-emitting materials with sustainable, recyclable wood solutions sourced from certified forests.

A global presence, a solid industrial structure

Listed company with an international presence, with production units in Europe and North America and a global distribution network.

ACCSYS products

WOOD SPECIES

Natural Accoya, the benchmark for performance and stability

Natural Accoya® is an acetylated solid wood offering exceptional dimensional stability and Class 1 durability. Thanks to its patented process without the addition of toxic substances, it durably resists moisture, insects, and rot while retaining the authentic appearance of natural wood. Its excellent long-term performance makes it an ideal solution for the most demanding decks, facades, and outdoor installations.

Accoya Color Grey, the elegance of durable grey

Accoya® Color Grey combines the exceptional performance of Accoya with a grey tint integrated throughout the wood's thickness. Mass-colored using a non-toxic process, it maintains a consistent appearance over time, without flaking or regular maintenance. Its dimensional stability and Class 1 durability make it an ideal solution for contemporary decks and facades.

A material built to last

Decks, cladding, joinery, outdoor installations: Accoya® consistently meets the requirements of the most ambitious architectural projects. Its very low dimensional variation, its Class 1 durability according to EN350 standard, and its homogeneous appearance outdoors make it a natural choice where precision, longevity, and reduced maintenance costs are non-negotiable criteria.

Perfect compatibility with Grad® systems

It is precisely this exceptional dimensional stability that makes Accoya® an ideal partner for our invisible fastening systems. By maintaining rigorous spacing between boards over time, it ensures the aesthetic and technical integrity of the installation and thus meets one of the fundamental requirements we place on each of our partner materials.

Class 1 Durability

Acetylated wood offering the highest durability according to EN 350 standard (Class 1), with an above-ground warranty.

Dimensional stability

Up to 75% more stable than traditional wood species. Greatly limits shrinkage, swelling, and moisture-related deformations.

Sustainable performance

Wood from FSC® certified forests, non-toxic, recyclable, and Cradle to Cradle® Gold certified for low environmental impact projects.

Contact

Lionel ALEIN

Sales Director France

lionel.alein@accsysplc.com

+33 7 89 33 60 79