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Merbau Decking

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Owing to its long-lasting beauty, durability, longevity, and hard-wearing nature, Merbau decking is one of the most widely used timbers for flooring and decking. This popular hardwood deck is termite-resistant and easy to install and maintain, making it a popular choice for all outdoor projects.

At Australian Treated Pine, we supply the best Merbau decking in Melbourne. From fences and gates to screens and railings, we have a timber solution for all your needs. We stock all Merbau timber decking sizes, including 70x19mm, 90x19mm and 140x19mm.

Please note that your purchase may come in various product lengths to make up the total amount. All lengths must be in whole numbers.


Merbau is a versatile hardwood derived from South East Asia, Papua New Guinea, the Pacific Islands and northern Queensland. When freshly cut, its heartwood is yellow-orange brown, developing into a darker red-brown with age. On the contrary, its sapwood is pale, yellow, white or buff coloured. Typically variegated, Merbau’s grains are interlocked and wavy, with a coarse but even texture known for its attractiveness on back-sawn material.

It finishes nicely with paint, stain or polish and with its high degree of natural durability and strength, Merbau is used externally in engineering, construction and marine applications.

Other applications of Merbau Decking include:

  • Outdoor decking
  • Undercover decking
  • Decking around pools
  • Decking near spas
  • Indoor decking and outdoor area
  • Raised decking
  • Decking with a balcony
  • Decking for pergola
  • Decking in porch and portico
  • Decking around the house’s side
  • Decking for a side path


  • Merbau is an imported timber.
  • Its durability is unmatched, as it’s the hardest and most sturdy timber species.
  • Its durability is built-in.
  • It’s one of the most malleable hardwoods available, offering good workability.
  • It’s bushfire resistant.


Merbau timber decking is the foremost choice of all decking experts and carpenters because of its unique beauty, resilience, and potential resistance from termite and weathering effects. Merbau has an intense and rich reddish-brown colour, presenting one of nature’s many beautiful colours.


Australians love to spend time outdoors with a Merbau deck. At Australian Treated Pine, we are aware of the unique aspects it offers. We offer great prices for our products and other supplies to help you install the decking you have always desired. Visit Australian Treated Pine for premium decking products available in sizes and quantities to suit your budget and preferences.

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Additional Information


70x19mm, 90x19mm, 140x19mm

Reviews (32)

32 reviews for Merbau Decking

  1. 5 out of 5

    Great friendly service & best quality timber. My living room and hallway looks impressive.

  2. 5 out of 5

    Great products & price and very knowledgeable staff. I’ve bought decking merbau for the decking for my house renovation. Will definitely keep using them. Great service.

  3. 5 out of 5

    Purchased for purpose of a complete wooden base for new shed in my yard. Looks durable & attractive.

  4. 5 out of 5

    Perfect for all kind of decking needs. Definitely deserves 5 stars.

  5. 5 out of 5

    Thanks Australian Treated Pine for supplying me with Merbau decking. My outdoor deck looks amazing.

  6. 5 out of 5

    The team was extremely helpful and very polite. I asked a lot of questions but they came up with the goods. Easy to use website and did click and collect. Thanks Australian Treated Pine!

  7. 5 out of 5

    Excellent customer service. I have been a customer for over a 1 year and have found their service and professionalism outstanding. I would definitely recommend these guys.

  8. 4 out of 5

    A great product and my new floor decking looks awesome. Thanks ATP for timely delivery.

  9. 4 out of 5

    Bought this for floor decking for my farm house. Excellent value for money.

  10. 5 out of 5

    Australian Treated Pine is your one stop shop if you’re looking for timber. Prompt delivery and an easy order process. Thanks for a fantastic job guys.

  11. 5 out of 5

    Bought timber for our deck and also for an indoor table and we absolutely love it. Highly recommend this place.

  12. 5 out of 5

    Our Architect recommended ATP to me and I have to say these guys know their stuff when it comes to timber!!

  13. 5 out of 5

    Great quality timber and wonderful finishing. We are so happy with the final results and are about to get to work on our upstairs. There isn’t a more professional and dedicated team in Melbourne.

  14. 5 out of 5

    Ordered online & got the timber delivered next day. I appreciate the prompt service. Nice experience.

  15. 5 out of 5

    I have purchased merbau decking timber online from Australian Treated Pine twice now. Both times they delivered the timber next day. Very pleased with the prompt delivery.

  16. 5 out of 5

    I purchased timber from Australian Treated Pine for my house extension project. It was a very pleasant and highly professional experience.

  17. 5 out of 5

    After searching many sites online, I finally decided to order merbau decking from Australian Treated Pine. The range of timber they offer is terrific and their pricing is generous in comparison to others. I highly advise purchasing timber here.

  18. 5 out of 5

    Great communication, helpful staff and overall great experience. I will be recommending Australian Treated Pine to others. Thank You.

  19. 5 out of 5

    A great team that supplies quality timber, and I got exactly what I was looking for. A very professional job.

  20. 5 out of 5

    I’m incredibly happy with the quality of the decking merbau floors. I highly recommend the team at Australian Treated Pine.

  21. 5 out of 5

    We are so incredibly happy with the service and product we received from Australian Treated Pine. We ordered merbau decking in order to complete some work at home. Customer service is lovely, so we will definitely be shopping here again.

  22. 5 out of 5

    Quality and price are the best. I ordered merbau decking online from Australian Treated Pine and had the timber delivered to my doorstep in no time. Thanks Australian Treated Pine.

  23. 5 out of 5

    Absolutely thrilled with the end product after I used the Merbau decking on my floors. Completely transformed my apartment!

  24. 5 out of 5

    Fantastic timber range along with professional and honest advice from the staff. Great place.

  25. 5 out of 5

    Extremely knowledgeable and friendly service professionals and prompt delivery. Nothing is too much trouble for this crew.

  26. 5 out of 5

    Awesome service. A great range of timber at great prices. I give my full recommendations.

  27. 5 out of 5

    Can’t thanks the guys enough as the service is great. The Merbau decking timber is even better and the prices are amazing.

  28. 5 out of 5

    Had some confusion on which timber to buy for my deck. I connected with the sales team, who were really polite and helpful. Thanks ATP for guiding me throughout the process of selecting and ordering

  29. 5 out of 5

    Friendly customer service. Very quick delivery. Kudos to you ATP!

  30. 5 out of 5

    Bought some merbau for my home from Australian Treated Pine. Quality product and service! Two thumbs up.

  31. 5 out of 5

    Great service and product. I now have a top quality deck in my garden to look at. Thanks!

  32. 5 out of 5

    Brilliant service and quality product, thank you Australian Treated Pine.

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Questions and Answers

  1. Q: What is Merbau Decking?
    A: Merbau is one of the most popular decking timbers being used, due to being less expensive than other hardwood decking’s and it has a high durability rating of 2. Much of the merbau comes from Southeast Asian rainforests.
  2. Q: Why Choose Merbau for Decking?
    A: Merbau is known for its durability, it is naturally resistant against splitting or cracking.
  3. Q: Where Does our Merbau Come From?
    A: Southeast Asian rainforests.
  4. Q: How Long Does Merbau Timber Decking Last?
    A: With a durability class of 2, you can expect your decking to last between 15 to 40 years without decay. The combination of its unusual density and strength make Merbau more durable than most other timber used to make outdoor decking and furniture.
  5. Q: Is Merbau Decking Treated?
    A: Treatment is not required for Merbau decking.
  6. Q: What is the Best Timber to Use For Decking?
    A: Merbau is the best timber to use for Decking as it is a hardwood & more durable than softwood. If price is an issue then Treated pine is the best option.
  7. Q: How Much Does A Merbau Deck Cost?
    A: You may expect to pay approximately $320 to $350 per m2 for a Merbau deck.
  8. Q: Is Merbau Good for Outdoor Furniture?
    A: Merbau is known for its durability. If you're looking for an outdoor furniture option with beauty that will last for years to come, Merbau is a great choice.
  9. Q: Can Merbau Be Used in Ground?
    A: In the ground ground, Merbau is only rated for 5-10 years. But when used above the ground as planks and boards, it is rated to provide 25 or more years of service.
  10. Q: Is Merbau Decking Termite Resistant?
    A: Yes, Merbau is termite resistant.
  11. Q: Is Merbau Timber Decking Sustainable?
    A: Merbau is a controversial choice as a building material, as its growth is not sustainable.
  12. Q: Is Merbau Fire Resistant?
    A: No species of timber achieves a spread-of-flame index of 0 unless treated with a fire retardant. Merbau is classified as a bushfire-resisting timber in Australia because it has fire characteristics similar to timber treated with a fire retardant.
  13. Q: Is Merbau good for decking?
    A: It is a popular decking timber which is perfect for decks and is less expensive than most other decking timbers. It has a high durability rating of 2 and is rot and insect resistant.
  14. Q: How do you clean a merbau deck?
    • Clean decking with SAP STRIP: Wood Conditioner
    • Remove surface dirt by sweeping or hosing the bare deck.
    • Dissolve 300g of SAP STRIP in 5 litres of hot water.
    • Apply mixture with stiff broom or brush. Leave for 15-30 minutes.
    • Wash the deck with a strong jet of water to remove residual cleaner.
    • Apply desired Quantum decking finish.
  15. Q: How to choose the right Merbau timber decking for your outdoor area?
    A: Always pick the straightest possible. This will make your project a lot easier.

    Also choose decking that is clean as this will make it easier to stain.
  16. Q: What lengths does Merbau decking come in?
    A: Merbau decking comes in various lengths. Depending on the supplier, you can acquire lengths ranging from a couple of meters to a length of your choice (within reason). Depending on the size of the decking, it is recommended to use as fewer pieces as possible to make the decking look grand.
  17. Q: How to build a Merbau fence?
    A: To build a Merbau fence you will need to ensure that the location of the fence and type of fence complies with government regulations. Check to see if you need a permit, engage a professional to design the fence and use quality materials and tools to ensure the fence lasts a long time.
  18. Q: How to maintain Merbau decking?
    A: If you have installed Merbau decking correctly, it should last a long time. Ensure that you treat the decking with care and do not damage it or subject it to foreign substances or objects. Make sure to oil the decking or paint the decking after installation, and regularly clean the decking to prevent deterioration.
  19. Q: How to oil a deck Merbau?
    A: To oil a merbau decking, you will need to clean the decking with an appropriate applicant to remove dirt, oils and impurities. There is no need to sand the decking. Once treated, apply good quality oil that will preserve the wood for a long time.
  20. Q: How to treat Merbau decking?
    A: Merbau is already a hardy wood. To protect the wood further, you can treat merbau decking by applying quality decking oil. Make sure that you prepare the deck by carefully cleaning it and then oiling the deck with an applicator. Do not rush the process as you may not apply the oil correctly.

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