SHOU SUGI BAN A brief history.
Shou Sugi Ban, also known as Yakisugi, derives from an ancient Japanese exterior cladding treatment used to preserve wood by charring it with fire. The treatment was introduced after Japan fell into short supply of driftwood which was collected from the coastlines for its prized appearance and durability after enduring a natural treatment process of saltwater, surf and sun.
Traditionally the timber used for charring was ‘Sugi’ wood, Cryptomeria , commonly known as Japanese Cedar which was used for residential exterior cladding, fencing and decking applications.
The term Shou Sugi Ban 焼杉板 simply translates to ‘burnt cedar board’.
FIRE TREATMENT The technique.
The traditional process involves binding three boards together to form a triangle like chute, with the bottom of the chute packed with paper. When lit, the chute transforms into a fire tunnel burning all inwards facing surfaces. Once evenly burned, the boards are separated and doused with water to stop the charring process.
Images featured are from dwell.com – read the article by clicking here.
Chemically, wood is made up of two components – cellulose and lignin. When the wood is burned it changes both the cellular structure and thermodynamic conductivity of the timber. The softer, more reactive, cellulose compounds vaporize, while the harder lignin takes a lot longer to burn. Resulting in the lignin requiring a lot higher heat and exposure to flame for it to ignite again. Basically, the technique forms a carbon layer on the surface of the timber which provides an insulating barrier that retards further degradation.
HURFORD'S SHOU SUGI BAN CLADDING A complete system.
Hurford’s Shou Sugi Ban Refined Architectural Cladding combines the ancient Japanese craft of fire treatment with a precision milled, architectonic cladding profile. It is a complete solution for any exterior wall, offering not just the cladding but a selection of customised trims to ensure a streamline execution and watertight result.
The timber species selected to manufacture Hurford’s Shou Sugi Ban is ethically sourced and processed by Hurford’s locally owned and operated facility in Queensland, Australia. Favourably sort after for its natural qualities and unique appearance, Callitris glaucophylla is highly durable and a naturally termite resistant species. Applying the fire treatment forces an additional barrier of protection against insect attack and decay, furthermore increasing the species overall durability.
Hurford’s uses a modernised Shou Sugi Ban technique, the process evenly chars the face of the board before it is cooled and finished to Hurford’s ‘Straight Charred’ effect.
Hurford’s Shou Sugi Ban Refined Architectural Cladding, is an aesthetically pleasing yet durable façade option.
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Q U E S T I O N S
For questions and advice on Hurford’s Shou Sugi Ban and where to order, please contact one of our Architectural Representatives listed below: