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Very durable - Class 1, high performance cladding created from sustainably-sourced wood. Accoya® undergoes a proprietary, non-toxic acetylation process that permanently modifies the wood to the core, giving an environmentally friendly solid wood with durability, dimensional stability and beauty that matches or exceeds even the best tropic hardwood.

The use of wider cladding boards is acceptable due to the improved dimensional stability. Cladding joints do not open, tolerances remain tight and twist is prevented. FSC certified.

Related literature

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Standard product features

Technical properties:

  • Density: 510 kg/m³.
  • Thermal conductivity: 0.13 W/mK.
  • Durability: Class 1.
  • Dimensional stability: Radial: 0.7%; Tangential: 1.5%.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-45-95/350 Softwood weatherboards

Product specification

An important note about specifying



James Latham


+44 (0) 207 288 6417

Product reference

Accoya FSC Cladding


 - Type:
[LT AC 01]
For horizontal installation.
[LT AC 02]
For vertical installation.
 - Size:
[15 x 145 mm]
[15 x 195 mm]


[Clear coating]
Insert requirement.
[Opaque coating]
Insert requirement.
[Translucent coating]
Insert requirement.

Fire retardant treatment

[Not required]

Manufacturer details

Suite 301 ,
Business Design Centre ,
52 Upper Street,
London, N1 0QH
Tel +44 (0) 207 288 6417
Fax +44 (0)116 281 3806
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