Merbau Decking In Australia: Benefits, Costs & Expert Tips

Planning a new deck for your outdoor space? Choosing the right decking material is one of the most important decisions you’ll make—and Merbau decking remains one of the most popular choices in Australia. At Sam Outdoor Living, we’ve helped countless homeowners design and install beautiful, long-lasting Merbau decks that withstand the test of time.

In this article, we’ll walk you through everything you need to know about Merbau decking: where it comes from, its pros and cons, pricing considerations, and how to maintain it to keep it looking its best.

What Is Merbau Decking?

Merbau is a dense and durable hardwood sourced from the Kwila tree, native to tropical regions such as Northern Queensland, Southeast Asia, Fiji, and parts of Africa. Thanks to its natural oils and rich, reddish-brown colour, Merbau has become a go-to material for both residential and commercial decking projects across Australia.

Beyond decking, Merbau is also used in flooring, cladding, furniture, and even musical instruments due to its strength and workability.

Pros of Merbau Decking

1. Durable and Weather-Resistant

Merbau is one of the most durable hardwoods available. It’s naturally resistant to termites, rot, and decay, making it ideal for outdoor environments and harsh Australian weather.

2. Attractive Appearance

Its warm golden to reddish-brown hue adds timeless elegance to any outdoor space. The colour can be enhanced or adjusted using decking oils to suit your desired look.

3. Easy to Work With

Despite its density, Merbau is relatively easy to cut and install, making it a favourite among builders and carpenters. Its stability also reduces the risk of warping over time.

4. Low Maintenance

While regular maintenance is recommended, Merbau doesn’t require constant upkeep. With proper sealing, your Merbau deck can maintain its beauty for years.

Cons of Merbau Decking

1. Sustainability Concerns

Not all Merbau is harvested sustainably. Look for responsibly sourced, FSC-certified Merbau to ensure your decking choice supports ethical forestry practices.

2. Prone to Bleeding

Fresh Merbau timber can “bleed” tannins when exposed to moisture, potentially staining nearby surfaces. Pre-sealing the wood and allowing it to weather before installation can help mitigate this.

3. Requires Ongoing Protection

To keep your deck looking its best, Merbau needs to be sealed regularly. Over time, its colour can fade if not maintained properly.

How Much Does Merbau Decking Cost?

The cost of Merbau decking in Australia varies based on factors like board width, length, and whether the timber is pre-oiled or grooved. On average, expect to pay:

• Standard 90mm boards: More affordable per m²
• Wider 135–140mm boards: Slightly higher cost per m²
• Pre-oiled or specific-length boards: Additional premiums

💡 Pro Tip: Always budget for 7.5–10% extra material to account for wastage, off-cuts, and design adjustments.

Also consider related expenses such as delivery, permits, fasteners, subframes, and installation if you’re hiring professionals like us at Sam Outdoor Living.

👉 Ready to get started? Check out our full Decking service offerings

How to Maintain a Merbau Deck

Proper care extends the life of your Merbau decking. Here’s how to keep it in top condition:

• Clean Regularly: Remove dirt and debris with a broom or mild decking cleaner. This prevents buildup that can cause premature weathering.
• Seal Your Deck: Use water-based decking oil for best results, as Merbau contains natural oils. Reapply every 6–12 months depending on sun exposure and wear.
• Customize the Colour: Merbau is easy to stain lighter or darker depending on your preferred aesthetic. Choose oils that complement your home’s exterior.

Is Merbau Decking Right for You?

If you want a strong, beautiful, and long-lasting timber decking option for your outdoor space, Merbau is hard to beat. Its durability, resistance to pests and weather, and stunning appearance make it a reliable investment. However, if sustainability is a top priority, you’ll want to ensure your Merbau is ethically sourced—or consider alternatives like composite decking or FSC-certified hardwoods.

Why Choose Sam Outdoor Living for Your Merbau Deck?

At Sam Outdoor Living, we bring your outdoor vision to life with custom-built Merbau decks that blend style, structure, and sustainability. Whether you’re after a classic backyard look or a modern alfresco upgrade, our experienced team ensures every detail is tailored to your needs.

We work with high-quality, responsibly sourced materials and offer expert advice every step of the way.

🔗 Explore our full range of Decking solutions today.

Merbau decking offers a timeless, durable, and visually striking choice for any outdoor project. By understanding its advantages, costs, and maintenance needs, you can make a confident, informed decision. If you’re ready to build or upgrade your deck, Sam Outdoor Living is here to help.