Architectural timber shaped by flame, texture and grain.
Materials with a previous life and a character shaped by time.
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KAEN / ACCOYA®
The preserved carbon surface on our most stable timber. Kiln-charred, left unbrushed and sealed with protective oil, it gives a dense black façade with fine, even crazing rather than the heavy plates of larch.
Surface character
Because Accoya® is uniform, its carbon layer cracks into a finer and more regular pattern than larch. Read from a distance the façade is a single deep black; up close it is a field of small, sharp facets.
The surface holds its colour and its texture unusually well through wet-dry cycling, which is why it is our recommendation for coastal, waterside and fully south-facing elevations.
Pairs cleanly with glass, powder-coated aluminium, pale render and limestone - surfaces that would show up movement in a less stable board.
Gallery
Technical overview
| Attribute | Specification |
|---|---|
| Timber | Accoya® |
| Surface family | KAEN |
| Thickness | 20 mm |
| Widths | 146 / 196 / 242 mm |
| Lengths | 2,400 mm, 3,000 mm, 3,600 mm, 4,200 mm, 4,800 mm |
| Surface texture | Preserved carbon crust, unbrushed |
| Installation | Vertical or horizontal |
| Protective finish | Protective oil; pigmented on KIME surfaces |
| Maintenance | Rinse gently with clean water; avoid abrasive cleaning of the carbon layer and re-oil when the surface looks dry. |
| Lead time | Typically 4-8 weeks for project quantities |
Availability may vary according to stock, profile and project quantity. Please contact BAUWN to confirm current availability.
Wood is a natural material. Grain, texture and colour can vary between boards, making every installation unique. Screen settings and lighting may also affect how colours appear.
Profiles
Recommended for exterior
Recommended profile for exterior cladding. The board is rebated into a Z section - the top of one edge and the underside of the other - so consecutive boards lap into each other and draw a fine, continuous shadow line across the façade.
Planed all round. A straightforward square-edged board for interior linings, joinery, furniture and detailing.
Tongue and groove for interior wall and ceiling linings. Available for interior applications or on request.
Applications
Completed projects
Explore selected projects created with Accoya® across different BAUWN finishes.
Dordrecht, Netherlands
Accoya® · KAEN Carbon
View Project →
Dordrecht, Netherlands
Accoya® · KAEN Carbon
View Project →FAQ
Yes. This surface is produced for exterior cladding as well as interior use. We advise the Shadow Gap profile outdoors, installed on a ventilated batten cavity.
Shadow Gap. The Z-shaped half-lap rebate lets consecutive boards overlap while the timber moves, keeps the cavity behind ventilated, and gives the façade a controlled shadow line.
Both orientations are possible. The batten direction and the drainage detail change accordingly; we can supply the relevant detail with your quotation.
Yes. Every board is charred and finished individually, so grain, depth of texture and tone shift slightly across a delivery. That variation is intended.
Keep it clean and free of standing debris, and re-oil when the surface begins to look dry. Maintenance frequency depends on orientation and exposure; we give project-specific guidance with each delivery.
Yes. Samples are the fastest way to judge a surface. Order this finish on its own or as part of a curated box.
Bespoke widths, thicknesses and profiles are produced on request for project quantities. Send the drawing or specification with your quotation request.
Use the quotation form. Your species and finish are carried over automatically, so you only add quantity, profile and project details.
Yes. This surface is produced for exterior cladding as well as interior use. We advise the Shadow Gap profile outdoors, installed on a ventilated batten cavity.
Shadow Gap. The Z-shaped half-lap rebate lets consecutive boards overlap while the timber moves, keeps the cavity behind ventilated, and gives the façade a controlled shadow line.
Both orientations are possible. The batten direction and the drainage detail change accordingly; we can supply the relevant detail with your quotation.
Yes. Every board is charred and finished individually, so grain, depth of texture and tone shift slightly across a delivery. That variation is intended.
Keep it clean and free of standing debris, and re-oil when the surface begins to look dry. Maintenance frequency depends on orientation and exposure; we give project-specific guidance with each delivery.
Yes. Samples are the fastest way to judge a surface. Order this finish on its own or as part of a curated box.
Bespoke widths, thicknesses and profiles are produced on request for project quantities. Send the drawing or specification with your quotation request.
Use the quotation form. Your species and finish are carried over automatically, so you only add quantity, profile and project details.
Other finishes on this timber
