Traditional Japanese wood processing Shou Sugi Ban dates back as long as 1,700 years, although earlier records that refer to it also exist. The process includes the burning of wood to ensure the beauty and durability of the material. The technique was invented with the purpose of extending the life of the wood, by making it resistant to fire, pests and decay. Architects and designers throughout Europe, North America and Japan revitalised this method in early 2000 and the unique properties created by Shou Sugi Ban are again used for interior and exterior finishing in architectural solutions worldwide.
In comparison with other facade finishing boards, the products of KOTUMAKI possess significant advantages. This ecological material is durable and long lasting – resistant to various types of fungi and bacteria, it does not turn blue, does not get covered with mould and pests do not live in it. After production and installation, the material does not require any care or servicing
The material used for the production of KOTUMAKI products are: spruce, larch, pine & oak. The finishing boards offered by us are made from specially selected spruce and larch sawn wood. Only class A level boards are used, which are additionally sorted after processing to ensure a result that conforms to the quality criteria set by KOTUMAKI. To prevent deformation during processing, the finishing boards are industrially dried to the moisture of KD 14% (±2%). The “displacement” capacity of the material after processing is reduced by approximately 40%, thus ensuring maximum efficiency in preserving the shape and adaptability of the element.
The wood is characterised by higher fire resistance than wood processed using other methods. Fire resistance in accordance with (B2)* class
*B – the building product does not create general flammable situations, but it can burn in the case if a fire has developed.
In comparison with other facade finishing boards, the products of KOTUMAKI possess significant advantages. This ecological material is durable and long lasting – resistant to various types of fungi and bacteria, it does not turn blue, does not get covered with mould and pests do not live in it. After production and installation, the material does not require any care or servicing.
The materials used for the production of KOTUMAKI products are: spruce, larch, pine & oak. The finishing boards are made from specially selected spruce and larch sawn wood. Only class A level boards are used in Shou Sugi Ban technology process. They are additionally sorted after processing to ensure a result that conforms to the quality criteria set by KOTUMAKI. To prevent deformation during processing, the finishing boards are industrially dried to the moisture of KD 14% (±2%). The “displacement” capacity of the material after processing is reduced by approximately 40%, thus ensuring maximum efficiency in preserving the shape and adaptability of the element.
Burned material is treated with special oil for outdoor use or a varnish for indoor use, if required. KOTUMAKI owns a unique and patented technology burnWOOD O3 (the material is kept in an ozone chamber after treatment, which completely neutralises all odours characteristic to burnt wood) that is intended for interior boards finishing which are used on large areas.
We have set the highest quality and service standards for ourselves, as we really care about the quality and sustainability of our products. We have a special attitude towards each customer and, if required, we perform training of the customer and their carpenters in order to reach the highest result that meets the requirements of KOTUMAKI!
KOTUMAKI retains its characteristic quality at all phases. The finished product is carefully packaged to prevent damage to the coal layer, while in transit. Mechanical damage caused during operation can be easily corrected by replacing the damaged boards. Considering the fact that this material is not affected by UV rays, a replacement fragment will not differ significantly, even after several years.
Individual approach and consultations for every customer. We are creative and open – we will be happy to consult you to find a KOTUMAKI product solution for your idea.
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