Ironbark is an Australian hardwood renowned for its strength and durability. For over 200 years this timber has been used as a structural component in buildings, bridges, and docks. Because of its durability, Ironbark is ideal for weather-exposed surfaces and is often the preferred choice for timber decking and exterior cladding.
There are two kinds of Ironbark that are readily available and these are Red Ironbark and Grey Ironbark. They have nearly identical properties and the most noticeable difference, as the names suggest, is in their colour. Both timbers grow in the western slopes of New South Wales all the way up to southern Queensland, making them readily available to the Australian market.
Benefits of using ironbark timber
Ironbark is a strong durable hardwood perfect for structural use and exterior applications. Its versatility makes it also a great timber for interiors and is often used for flooring, panelling, and cladding in homes and commercial buildings. Ironbark performs extremely well when exposed to the weather and another benefit is that it’s termite resistant. The timber can also be charred to increase durability and fire resistance. At Mortlock Timber we use a Japanese technique known as Shou Sugi Ban.
Proplank click-in system for fast and easy installation
Comes with proprietary corners and end trims
Available in a variety of different colours and finishes
Strong & Durable
Weather resistant and termite resistant
For over 200 years Ironbark timber has been used for heavy engineering and marine construction, but many architects and interior designers are now using it in their creations. Buildings that require exterior cladding, decking, or durable flooring, will often opt for Ironbark timber. Its strength and durability, combined with the wide range of colours and finishes available, make Ironbark an excellent choice for contemporary architectural designs.
At Mortlock Timber we provide a wide range of Ironbark timber products for both interior and exterior applications. Our Proplank click-in system allows for fast and easy installation of timber cladding, while our Trendplank system is best for concealed fixed timber cladding. Ironbark can also be charred using the Japanese technique known as Shou Sugi Ban, drastically increasing its durability and fire resistance. Other products include a variety of decking and flooring options.
Ironbark timber is available in a variety of finishes which range from a natural raw look to a glossier stylish finish. Choose between Unfinished, Clear Oiled, Unfinished Fine Sawn, and Clear Oiled Fine Sawn. Charred Shou Sugi Ban finish is also available and recommended for areas at high bushfire risk.
Red Ironbark has a deep red heartwood with a contrasting pale yellow sapwood. It also has a fine and even texture with an interlocked grain. Grey Ironbark, on the other hand, has a heartwood that ranges from light grey and light chocolate to dark red and dark brown. It has an almost white sapwood and the timber usually comes with a straight grain, but can sometimes be found with an interlocked one.
Natural features such as gum veins can be spotted in Ironbark timber, and Grey Ironbark can sometimes have black narrow to broad streaks running through it. While Red Ironbark has an interlocked grain, its counterpart often comes with a straight grain. Both timbers have a fine and even texture which makes them ideal for interior and exterior cladding.
Red Ironbark and Grey Ironbark have nearly identical properties which make these hardwood timbers especially good for exterior applications. Apart from its strength, Ironbark is also extremely durable to wear from the elements and in the past it was even used for marine applications. Termite resistance is another great property, especially for timber used in exteriors.
New South Wales & Queensland
PEFC available on request
Group 3, BAL 12.5, 19 and 29 – All AS3959 required applications
Interior and Exterior Use
Discover our latest Ironbark timber projects and get inspired! Our Proplank click-in system and Shou Sugi Ban were used in luxury homes, commercial buildings, and even theatres. Mortlock Timber is proud to service individuals and businesses across all Australia.
Ironbark is a tree that grows in New South Wales and Queensland, and whose timber is used for a variety of interior and exterior applications.
Ironbark timber is often used for exterior cladding, because of its durability, but can also be used in interiors.
For decking, Ironbark timber starts from $181 p/m2, while for cladding it starts from $201 p/m2 (both excluding GST and delivery). Download our pricing guide for more details.
PEFC certification for Ironbark is available on request.
Ironbark has a Class 1 durability which is of around 50+ years in protected indoor areas and outdoor above-ground areas. While around 25+ years for in-ground areas.