
The durability of many commercial softwood timber species can be improved with the application of a wood preservative by an industrial pressure process thereby allowing effective use in outdoor situations. The process involves a high pressure treatment plant / autoclave like the one shown here.
Much of the decking and landscaping timber available through trade suppliers has already been treated in this way, but to varying levels of protection.
Treatment parameters vary according to the end use of the timber and therefore it is crucial to be aware of where such purchased timber can be used...read on.