Timber Preservatives

The durability of many timbers can be enhanced by preservative treatments. This involves the introduction of stable chemicals into the cellular structure of the timber which protect it from wood destroying organisms.

With current commercial treatment procedures, it is not possible to treat heartwood effectively becasue heartwood cells contain resins and other extractives which prevent the uptake of the preservative solution.

Therefore the natural durability (relates to the resistance of heartwood of the species to fungal and insect attack) of the timber must also be taken into consideration when specifying your timber product.

Read details of Copper Azole treatment of timber (web page)

Read details of Copper Chromium Arsenate (CCA) Preservatives (web page)

Perspective on Timber Treatments What should you expect from Timber Treatment? A 400KB PDF

Copper Azole timber preservatives guide A 40KB PDF

CCA acceptable use A 300KB PDF (Where CCA can and cannot be used)

Download Industry Guide to the sale of CCA-Treated Timber Products after March 2006. A 240KB PDF

Timber Preservatives continued…