What does pressure treatment with wood preservative involve?

Wood preservation is the treatment of wood to make it more resistant to rot, insects and other types of damage. Pressure treatment with Tanalith is a commonly used method of wood preservation.


The process of pressure treatment with Tanalith F includes several steps:


1. pre-treatment: the wood is first dried in the drying chamber to remove any moisture, and then pretreated to remove any dirt. This step is important because it ensures that the wood is clean and free of impurities that could affect the treatment process.

2nd Vacuum: The wood is then placed in a large cylinder where a vacuum is applied to remove all residual air from the wood. This step is important to allow the preservative to penetrate deeper into the wood.

3. Pressure: The cylinder is then pressurized, forcing the preservative solution into the wood. The pressure is usually around 120-150 psi and is maintained for 30 minutes to an hour, depending on the size and type of wood being treated.

4. depressurization: Once the pressure treatment is complete, the cylinder is drained and the excess preservative is removed from the wood surface.

5. drying: the treated wood is then dried for several days to ensure that it is completely dry before use.


Tanalith F is a water-based preservative that contains copper and organic biocides. These chemicals protect the wood from rot and insect attack, making it more durable and long-lasting. Pressure treatment with Tanalith F ensures that the preservative penetrates deep into the wood and provides maximum protection against rot and insect attack.