If treated properly, Shou Sugi Ban wood can last over 50 years. This is due to the carbon layering process from charring the wood. Charring adds an extra layer of protection to wood’s structural durability and changes the chemical composition of the wood itself. Hemi-cellulose in wood reacts with flames to minimise rot and infestation. The char layer remaining on wood becomes hydrophobic, which safeguards the wood against moisture and weathering. It also provides additional protection against fire by increasing the temperature threshold needed for combustion, making the charred wood less flammable.
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