The Advantages of Merbau Decking

Why Choose Bowens Merbau Decking

Merbau has long been one of Australia’s most popular hardwood decking choices, and for good reason. Known for its durability, workability and consistency, it’s a species that builders and trades have trusted for decades. This blog breaks down exactly why Merbau continues to be a top-performing decking material on site and what makes it a reliable choice for long-lasting outdoor projects.

What Is Merbau?

Merbau is a high-density hardwood renowned for its strength, stability and natural resilience. Commonly used in decking, outdoor screening, seating and benches, it’s a go-to material for robust performance and a visually appealing finish. Its rich colour, ranging from warm browns to yellow shades, and natural resistance to decay and movement make it an excellent hardwood choice.

Key Advantages of Merbau Decking

Strength & Durability

Merbau decking is naturally resistant to harsh weather, moisture and rot, making it ideal for exposed outdoor environments. With a Class 1 durability rating, it’s built for long-term performance even in demanding high-traffic areas.

High-Dimensional Stability

Compared to other species, Merbau decking is far less prone to warping, cupping or excessive movement. Its stability makes it a dependable option across Australia’s variable climates, from hot, dry inland sites to coastal builds where humidity can expand vulnerable timbers.

Hard-Wearing in High-Traffic Areas

Thanks to its density, Merbau can withstand heavy foot traffic, outdoor furniture and general use. It maintains structural integrity well, ensuring your deck will perform for years without significant wear.

Attractive, Consistent Appearance

Merbau’s natural colour tones and even grain pattern make it an easy species to work with for a quality aesthetic. Its consistency means a more uniform final product with fewer visual variations between boards.

Merbau is Easy to Work With

Despite its density, Merbau decking cuts, drills and fixes well. Its workability helps speed up installation on site, perfect for builders working to tight timelines.

Cost-Effective Hardwood Option

Compared to other durable hardwoods, Merbau decking is cost-effective. It offers outstanding performance characteristics without the price tag of more premium species, making it a practical choice for budget-conscious projects.

Maintenance and Longevity

Regular oiling or sealing helps retain colour and maximise the Merbau’s lifespan.

Note: Merbau is a naturally tannin-rich timber and tends to stain surrounding paving and concrete due to tannin leaching. To reduce leaching, we recommend;

• Use tannin remover and decking cleaner to wash out tannins before applying a protective coat
• Ensure timber coatings are maintained to avoid letting moisture back in
• Select a kiln-dried product
• Ensure you seal any cut ends of the timber.

Bowens Range of Merbau Decking

With consistent stock, quality grading and bulk-buy discounts, Bowens offers a comprehensive range of high-quality Merbau decking.

To streamline the process, you have the option to order our Merbau decking pre-oiled for immediate protection and to increase the product’s lifespan. For more information, check out our Pre-Coated Timber Services page.

For more decking timber options, explore our timber decking range online or visit our blog ‘Timber decking: Deck Out the Deck’ for a rundown of the pros and cons of decking species available.