The Treatment Process

The structure of wood is similar to that of a sponge, with cell cavities and cell walls, which represent the actual wood. The aim of wood preservation is to coat these walls with preservative to protect them from decay caused by wood-destroying fungi and insects. The preservative penetrates deep into the wood with the aid of pressure and a vacuum. First the vacuum removes the air from the cavities to create space for the preservative solution, which is then forced deep into the wood under high pressure.

Click the play button opposite to see how our timber is pressure treated. For 'non-flash' users, please use our alternative 'Illustrated Process'.

More information about our chemical can be found at the Dr. Wolman website and on our Timberlink & Dr. Wolman page.

timber pressure treatment process step 1
The pressure treatment vessel is loaded with timber.
timber pressure treatment process step 2
A strong initial vacuum is created, pulling the air from the timber and out of the vessel.

timber pressure treatment process step 3
While maintaining the vacuum, the vessel is filled with Wolmanit® CX8-WB preservative solution.
timber pressure treatment process step 4
Under high pressure the preservative solution is forced deep into the timber.

timber pressure treatment process step 5
The pressure inside the vessel is reduced to normal and the excess solution within the vessel is drained off.
timber pressure treatment process step 6
A final vacuum is created, allowing any excess solution to be drawn from the timber.

timber pressure treatment process step 7
The timber treated with Wolmanit® CX8-WB is now removed and placed in storage to allow fixation.