The Beautiful Colors of Shou Sugi Ban Wood

Shou Sugi Ban colour does not come from the flame. The timber species, grain, brushing level and coating system all contribute to the final appearance. Natural variation remains visible, so every board will not look identical—and that is part of real timber’s character.

Colour also changes over time. Sunlight, rain, orientation, pollution, handling and maintenance influence both coated and uncoated surfaces. A reliable specification therefore defines not only the starting colour, but also the acceptable variation, exposure and future care.

What Creates the Colour of Charred Wood?

The Base Timber and Product

Spruce, larch and Thermo Pinus Radiata have different underlying colours, growth patterns, knots and resin. Accoya is acetylated wood made primarily from Pinus radiata; its modification and selected grade also influence the starting surface. After charring and brushing, these characteristics can remain visible through the finish, so the same coating may look different across the products.

Surface Treatment

The final colour and texture are shaped by species, brushing and finish. Deep Char has a strongly textured black surface, while brushed products reveal more grain and warmer timber tones.

Brushing

Brushing removes the char layer and exposes the grain beneath. Light brushing gives the surface you see on Dark Natural. Deeper brushing takes it to Natural, with stronger grain contrast and a lighter surface. The oil applied afterwards decides the final product.

The Coating System

Oils, translucent coatings and pigmented finishes hold or shift the colour and settle loose surface residue. Specify the finish as part of the Degmeda product. Household dyes and improvised solvent mixtures are not suitable for architectural timber.

Deep Black and Charcoal Finishes

Deep black finishes emphasise the effect of controlled charring. Depending on the species and brushing level, the surface can range from a textured black char to a smoother charcoal grain.

Dark surfaces get warmer in direct sunlight, and textured char marks from rubbing and contact. For entrances, narrow passages, interiors and anywhere people brush past, check the surface and finish suit that use.

Brown, Amber and Warm Wood Tones

Brushing exposes the warm timber under the char. Translucent and pigmented oils then build amber, brown or copper tones while the grain stays visible.

Warm finishes show natural variation clearly. Knots, resin and growth-ring contrast may appear lighter or darker across the order. Representative samples should include this variation instead of suggesting a uniform printed colour.

Grey and Weathered-Look Finishes

Grey finishes can create a contemporary appearance while leaving the timber texture visible. A factory-applied grey is not the same as natural outdoor weathering: the two processes develop differently and require different expectations.

Natural greying is driven by ultraviolet light and weather. Sheltered areas may remain darker while exposed areas change faster, producing uneven tones on one facade. A coating can control the starting appearance but cannot prevent all future change.

How Charred Wood Colour Changes Outdoors

Sunlight

Sunlight fades pigments, softens the contrast and changes the timber colour underneath. South- and west-facing walls move faster than shaded ones.

Rain and Shelter

Rain can wash and erode surfaces, while roof overhangs, window reveals and recessed areas remain protected. This creates different ageing zones. Good drainage and ventilation protect the construction, but they do not guarantee perfectly even colour.

Mechanical Contact

Deeply textured char can polish, mark or shed loose residue when rubbed. Brushed and coated surfaces normally tolerate contact differently. Select the finish according to how people, furniture, vegetation or maintenance equipment will interact with it.

Maintenance and Recoating

Inspect exterior finishes regularly and after severe weather. Check coating wear, loose char, damaged boards, open joints, cut ends and fixings. Clean gently with a soft brush and a mild product approved for the finish. Avoid aggressive pressure washing, harsh chemicals and improvised solvents.

There is no universal recoating interval for every colour. Exposure, orientation, species, surface texture, pigment and coating chemistry all affect maintenance timing. Follow the exact Degmeda product guidance and respond to the actual condition of the surface. Continue with our guides to cladding cleaning and oil maintenance.

How to Approve a Colour

Screen images are useful for inspiration but cannot define the final product. Display settings, lighting and photography affect colour. Approve physical samples made on the selected species, profile, brushing level and coating system.

For larger or appearance-critical buildings, use a facade mock-up that includes several boards, joints, corners and the actual orientation. Review it in daylight and agree the acceptable range of colour, grain, knots and sheen before the main order.

Specify More Than a Colour Name

A colour name alone is not a complete charred-wood specification. Confirm species, grade, dimensions, profile, orientation, surface treatment, brushing, coating, sheen, end treatment, fixings, substructure, exposure and maintenance guidance.

Any fire, durability or environmental statement must relate to that exact Degmeda product and, where relevant, the complete tested assembly. Controlled charring transforms the timber surface and improves resistance to moisture uptake, weathering and biological decay, while compatible colour and coating systems support the selected appearance. Long-term performance depends on the complete product and façade design, and any required fire classification must relate to the exact tested or classified product and assembly.

Current colours and product availability should be confirmed for each order. Compare the broader surface families in The Different Styles of Shou Sugi Ban, and continue to Shou Sugi Ban Siding when selecting a cladding product.