Everything You Need To Know About Ironbark

Ironbark Timber – The Ultimate Guide

With it’s deep, distinctive colours and hard-wearing qualities, Ironbark is a real Australian favourite that is well known for its durability. As industry experts, the team here at Coach House Timbers are often recommending this timber to clients when it comes to decking and other domestic or commercial builds.

With our years of experience working with this timber, accompanied by the common questions we receive from our customers, we have compiled this list of insights to help you learn more about Ironbark Timber.

Ironbark Q&A

What is Ironbark

Grey and Red Ironbark are premium Australian hardwoods, known for their hard-wearing qualities, strength and durability. Ironbark trees are named after their thick, compact and hard bark. They grow in Victoria, New South Wales and Queensland.

Is Ironbark a hardwood

As premium Australian hardwoods, Grey and Red Ironbark are well known for their durability, often being used  as decking because of it’s endurance. Ironbark timbers have high density levels with strong natural resistance to lyctid borers and termites.

Is Ironbark a good choice for flooring

The hard-wearing timber is ideal for high traffic areas making Ironbark decking and flooring popular in commercial and domestic builds.

When to oil hardwood Ironbark deck

At Coach House Timbers, we generally recommend finishing / coating the material before, or straight after, installation to prevent moisture absorption / reduction, which can cause swelling, cupping, warping, twisting and splitting.

Coating/oiling before installation gives the added benefit of more even coverage and it gives the product a better chance of penetrating and/or sealing the grain before being exposed to the weather, therefore improving the service life.

Is Ironbark eucalyptus

Both Grey (Eucalyptus paniculate) and Red Ironbark (Eucalyptus drepanophylla )are considered eucalyptus trees.

Is f 27 Ironbark fire retardant

Stress grades for hardwoods and some softwoods are designated by an ‘F’ number (F5, F14, F17, F27 etc.), with higher ratings indicating more durability. Ironbark can be classified as an F27, and is considered fire resistant.

How to prevent Ironbark from splitting and twisting when curing

Splits and cracks (also know as checks) are common occurrences as wood dries. The shrinkage within the wood happens disproportionally as it dries, causing some parts to unevenly change in size, subsequently causing the cracks. To avoid cracks, the key is to remove the moisture from the wood slowly. These checks are hard to avoid without using a vacuum kiln or placing the timber away from direct sunlight. All Coach House Timber products are kiln dried beforehand, allowing a superior finish.

How deep do you put Ironbark split posts into ground

The depth at which you place the Ironbark split posts can vary depending on what size post you use. We recommend digging approximately one third to one half of the post height down, however as mentioned, results could vary depending on your project.

Where does Ironbark grow

Ironbark trees are named after their thick, compact, and hard bark. They grow in Victoria, New South Wales, and Queensland. Red Ironbark logs are almost exclusively sourced sustainably from native forests.

Which Ironbark grows west of the great divide in Queensland

Red Ironbark is scattered on the western side of the Great Dividing Range, from central Queensland, through New South Wales and into northern Victoria.

When does red Ironbark flower

From winter to early spring, pink to red flowers are borne in clusters of seven from Red Ironbark. This tree creates a great habitat for native fauna and is a valuable source for honey production.