Treated Pine (Structural H3 & H4)

Treat yourself to longer lasting timber

Treated pine is highly regarded for its strength and longevity. The various treatments applied to pine help safeguard it from termite attack and decay. 

In its rawest form, pine plantation timber is a wood species with a low level of natural durability. It’s easy to forget that pine is actually a softwood and does not have pores. Without kiln drying or applying a preservative (treatment), pine can split, crack or rot. To ensure you get the longest life out of your project, always use treated pine.

The right treated pine for your project

There are various timber treatment products and processes used in Australia. The most common preservative products include:

CCA, ACQ and CuAz – these are water-borne preservatives that permeate the wood.

LOSPs – meaning Light Organic Solvent-borne Preservatives, these are mixed with a light solvent and applied. 

Treatments are distinguished by their H level. H1 is the lowest (which is rarely, if ever used), while H6 is suitable for timber that is exposed to seawater for prolonged periods (such as jetty piles).

Austim carries a large range of H3 treated pine which is suitable for outside, above ground use. We also stock H4 treated pine posts, which are suitable for outside, in-ground applications.