Why Choose Ironbark Decking?

Ironbark decking is an Australian heavyweight. Sourced from the eastern seaboard of Australia, this decking timber is renowned for its extreme density and unparalleled strength. The heartwood ranges from a deep red to a dark brown, giving it a rich and classic appearance that adds a touch of sophistication to any outdoor space. It is one of the most durable timbers for decking. You can choose from grey ironbark and red ironbark depending on the colour you desire. 

Often used in heavy structural applications like railway sleepers and wharf construction, Ironbark’s properties make it an excellent choice for a deck that needs to withstand the most demanding conditions. Its interlocked grain provides additional structural stability, naturally resisting small cracks and warping, which is a common issue with softer timbers.

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Unrivaled Hardness

With one of the highest Janka hardness ratings, Ironbark is incredibly resistant to scratching, denting, and wear. This makes it perfect for high-traffic decks, commercial spaces, and areas exposed to heavy use.

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Fire and Pest Resistant

Ironbark’s density gives it excellent natural resistance to fire, termites, and wood borers. This makes it a safe and reliable choice, especially for homes in bushfire-prone areas.

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Outstanding Longevity

Rated Durability Class 1 for both above-ground and in-ground applications, Ironbark is one of the longest-lasting timbers available. It can withstand the test of time, weather, and heavy use.

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Rich, Classic Appearance

Ironbark’s deep red and dark brown hues provide a classic, robust look that complements both modern and traditional home designs. It adds a sense of warmth and strength to any outdoor space.

The Pros and Cons of Ironbark Decking

Like any premium building material, Ironbark decking has its strengths and trade-offs. The extreme durability and long lifespan come at a higher upfront cost compared to softer hardwoods or composite materials. Its density also means that installation can be more labor-intensive and challenging, requiring specialized tools and professional expertise to ensure proper cutting and fastening.

Maintenance & Longevity

To protect and prolong the life of an Ironbark deck, it is recommended to perform regular maintenance. Applying a high-quality, UV-protective decking oil once a year will help maintain the timber’s vibrant, rich tones. For those who prefer an aged, coastal-grey patina, the deck can be left to weather naturally, but proper cleaning and an occasional rinse will still be needed to prevent dirt buildup.

Expert Installation is Key

The density and hardness of Ironbark make it a timber that is best handled by experienced professionals. Proper installation is critical to its long-term performance and includes using high-quality screws and ensuring adequate drainage and ventilation under the deck to prevent moisture buildup. Investing in expert installation pays off in the long run, ensuring a deck that will last for decades with minimal issues.

Choose the ultimate in timber durability.

Long Flat Timbers provides premium Ironbark timber decking , we source grey ironbark, red ironbark and other high-quality Australian hardwoods. Contact us today to get a quote and start your heavy-duty deck project. We offer competitive pricing and reliable delivery to Sydney, Northern Beaches, Central Coast and  across NSW.

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Frequently Asked Questions

Ironbark is a highly dense and durable hardwood, making it exceptionally resistant to termites, rot, and decay. Its natural strength and stunning appearance make it a top choice for long-lasting, beautiful decking.

With proper installation and regular maintenance, Ironbark decking can last for over 40 years. Its natural properties make it one of the most durable timber species available.

To keep your Ironbark decking looking its best, we recommend cleaning it twice a year to remove dirt and grime. Applying a high-quality decking oil annually will help to protect the timber and maintain its rich color.

Yes, Ironbark has a Group 1 fire rating and is one of the few timbers that can be used in BAL-29 fire zones, making it a safe and reliable option for bushfire-prone areas.

Ironbark is a premium product, and its cost can vary based on grade and size. While it is more expensive than common softwoods, its exceptional longevity and minimal maintenance often make it a more cost-effective choice in the long run.

We also supply hardwoord decking bearers & joists for decking sub-frames