Merbau Timber Decking Melbourne

 

Merbau Decking Backed by Industry Expertise

Greenhill Timbers is a Melbourne based timber supplier specialising in premium hardwood decking. We supply builders, landscapers, architects, flooring professionals and homeowners with high-quality Merbau decking, expert advice and reliable delivery across Victoria.

Unlike many retailers, we work with timber every day. Our team helps customers select the right profile, board size and finish for each project, ensuring your deck not only looks great but performs for decades.

If you’re researching the best timber for decking in Australia, Merbau continues to be one of the most trusted hardwoods because of its natural durability, strength and long service life.

Why Professionals Choose Merbau Decking

Merbau has earned its reputation as one of Australia’s most popular decking timbers for good reason.

Its dense hardwood construction naturally resists termites, fungal decay and harsh weather conditions while providing excellent dimensional stability.

The timber’s rich brown colouring, distinctive grain and exceptional durability make it suitable all Decking.

At Greenhill Timbers we only supply quality Merbau suitable for Australian outdoor conditions.

Why Builders Buy From Greenhill Timbers

Greenhill Timbers supplies thousands of square metres of timber products every year throughout Melbourne and Victoria.

Customers choose us because we provide:

  • Expert product advice from timber specialists not salespeople.
  • Quality Merbau selected for appearance and performance.
  • Competitive pricing for homeowners, builders and trade customers.
  • Large stock levels for fast turnaround.
  • Melbourne warehouse with quick delivery throughout Victoria.
  • Matching decking screws, clips, oils and installation accessories.
  • Honest recommendations based on your project and budget.

We believe choosing decking shouldn’t be confusing. If another timber is better suited to your project, we’ll tell you.

 

Merbau Decking Installation Tips

Getting the installation right is just as important as choosing quality timber. At Greenhill Timbers, these are a few recommendations we give customers to help maximise the life of their Merbau deck.

1. Oil All Sides of the Boards

Before installation, we recommend applying a quality decking oil such as Cutek to all sides of each Merbau board, including the underside and cut ends. This helps reduce uneven moisture absorption, improves stability and provides added protection against the weather.

2. Protect Your Joists with Joist Protection Tape

Install joist protection tape on the top of every timber joist before fixing the decking boards. The tape creates a waterproof barrier that helps prevent moisture from becoming trapped around screw penetrations, reducing the risk of joist rot and significantly extending the life of the subframe.

3. Allow for Proper Board Spacing

Always leave the recommended gap between decking boards to allow for natural expansion, contraction and drainage. Correct spacing also improves airflow beneath the deck and helps prevent moisture build-up.

4. Seal All Fresh Cuts

Whenever a board is cut to length, apply decking oil or an appropriate end-grain sealer to the freshly cut end. This helps protect the exposed timber from moisture ingress and weathering.

5. Use Quality Stainless Steel Fixings

For the best long-term performance, use high-quality 316 stainless steel screws or concealed fixing systems, particularly in coastal or high-moisture environments. This helps prevent corrosion and staining over time.

6. Ensure Good Ventilation

A well-ventilated subframe allows air to circulate beneath the deck, reducing trapped moisture and helping the timber remain stable throughout the seasons.

7. Wash Before Final Oiling

Merbau naturally contains tannins that can bleed when exposed to moisture. We recommend washing the deck after installation and allowing it to dry thoroughly before applying the final coat of decking oil.

Greenhill Timbers Tip: Taking a little extra time during installation—such as oiling the underside of the boards and protecting your joists with tape—can significantly extend the life of your deck and reduce future maintenance.

Available Merbau Decking Sizes

We stock the most popular Merbau decking profiles including:

90 x 19mm Merbau Decking
140 x 19mm Merbau Decking
Random Length Decking
Set Length Decking
Smooth Face
Reeded Face

Our team can also help calculate quantities, minimise waste and recommend the best fixing system.

Kiln-Dried for Better Performance

Our Merbau decking is kiln-dried to improve stability before installation.

This helps reduce excessive movement, shrinkage and warping while making installation easier.

Selected products are also available pre-oiled, saving installation time while providing additional protection against moisture.

Frequently Asked Questions

Is Merbau still one of the best decking timbers?

Yes. Merbau remains one of Australia’s most popular hardwood decking options thanks to its durability, attractive appearance and excellent lifespan when properly maintained.

What size Merbau decking should I choose?

90x19mm offers a classic decking appearance, while 140x19mm provides a wider, more contemporary look with fewer board joins.

Does Merbau require maintenance?

Like all natural timber, Merbau performs best when cleaned regularly and re-oiled every 12–24 months depending on weather exposure.

Can Greenhill Timbers help calculate my decking?

Yes. Our team can calculate quantities, recommend board layouts and help determine the correct number of clips, screws and accessories required for your project.

Why Greenhill Timbers Is Trusted

Choosing timber isn’t just about price. Moisture content, grading, board quality and product knowledge all influence how well a deck performs over time.

Greenhill Timbers has built its reputation by supplying quality timber products backed by honest advice and practical industry knowledge. Whether you’re building a small backyard deck or a large commercial project, our goal is to help you choose the right timber the first time.

If you’re comparing suppliers, we encourage you to ask questions about timber grading, moisture content, board lengths and installation recommendations. These details often determine the long-term success of a deck.

Our team is always happy to help.

Get a Quote

Looking for premium Merbau timber decking in Melbourne?

Contact Greenhill Timbers today for expert advice, competitive pricing and fast delivery across Victoria. Whether you’re a homeowner building your dream deck or a builder sourcing materials for your next project, we’re here to help

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