What is Timber Preservation Treatment?
Timber preservation treatment is the process by which wood undergoes some form of manipulation in order to extend its natural life expectancy.
Different varieties of wood have varying life spans at which they maintain their structural integrity before they start to decay and fail. The objective of carrying out preservation treatments is to protect timbers from woodworm and from wet and dry rot attack.
When determining the durability of wood a “graveyard test” is undertaken. This involves burying the end of a piece of wood in the ground and monitoring how long it lasts before it starts to decay. Depending on the results timbers are graded from perishable to very durable. Usually those closer to the perishable end of the scale are used for internal timbers and those which are durable are use as structural timbers.
In order to extend the life expectancy of a piece of wood, some form of timber preservation treatment is carried out. Usually this occurs at a wood processing facility, where the permeability of wood determines which timbers are best suited to preservation treatment.
In some instances timbers which are already in-situ in a property will need treatment to prolong their life. Often these are bedded in timbers, which cannot be replaced as they form part of the integral structure. When this is the case Prokil offer two forms of timber preservation treatment.
- Pasting and spraying chemical preservatives can be applied to timbers which are permeable.
- Inserting boron rods to timber which are deemed resistant or extremely resistant.