SFS17 Shou Sugi Ban

Shou Sugi Ban

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Shou Sugi Ban

Shou Sugi Ban meaning "burnt cedar board' is an ancient Japanese technique of preserving timber by charring it by fire, letting it cool down and then finishing it with a natural oil. Traditionally, Cryptomeria japonica (Japanese Cedar) or sugi as it is known in Japan was used in the process and the resulting charred timber was used externally.

Shou Sugi Ban is still used as a way of preserving timber and paradoxically, it makes it to some extent, fire resistant too. If the construction timber of a building is thick enough, when exposed to a fire, the exposed surface will be converted to char until the thickness of the char provides enough insulation to prevent any additional charring. This layer will then protect the remaining core of the wood, leaving it structurally able to carry the load it was designed for, assuming it was appropriately designed.

It is also used decoratively by architects for interiors and exteriors.