How is timber tanalised?

Timber is tanalised through a pressure treatment process that involves placing the wood in a vacuum chamber, where preservatives are injected under high pressure. This effectively forces the chemical preservatives deep into the wood fibers, enhancing its resistance to decay, insects, and moisture. The most common preservative used is copper-based, which helps prolong the life of the timber for outdoor and structural applications. After treatment, the timber is typically dried to ensure it is ready for use.