What is the best wood for a deck in Brisbane?

Spotted Gum is our top recommendation for a native timber due to its durability, fire rating, and beauty. Merbau is also an excellent and popular choice for its stability and rich colour, provided tannin bleed is managed correctly at the start.

Do I have to use Treated Pine for my deck frame?

While you can use exceptionally durable (and expensive) hardwoods, over 95% of deck sub-frames are built with H3/H4 rated Treated Pine. It offers the best balance of cost, strength, and guaranteed protection against termites and rot, which is critical in Queensland.

How can I ensure my timber is sustainably sourced?

Look for timbers that are certified by organisations like the Forest Stewardship Council (FSC) or the Programme for the Endorsement of Forest Certification (PEFC). A reputable carpenter should be able to confirm the source of their materials.

How often should I re-stain my hardwood deck?

This depends on its exposure to the sun and rain. A deck in full sun may need a fresh coat of oil or stain every 6-12 months to protect it and maintain its colour. A covered deck might only need it every 18-24 months. Regular cleaning is also essential.

Types of Wood in Australia: A Brisbane Carpenter's Guide

Updated 27 April 2026Timber4 min read780 words

Popular Australian Hardwoods for Outdoor Durability

When it comes to longevity and stunning natural looks, Australian hardwoods are world-class. They possess the density and natural oils needed to stand up to our climate. However, they vary in colour, maintenance needs, and price, so it's crucial to pick the right one for the job. Here are the top contenders we use every week.

Detail

Spotted Gum

Spotted Gum is arguably the king of Australian decking timbers. It's a tough, durable, and attractive hardwood with a wide range of colours, from pale straw to deep chocolate brown. Its high density and natural oils make it a great choice for bushfire-prone areas (BAL rated) and it has excellent resistance to termites. We often recommend it for high-end new deck construction services where both looks and longevity are paramount. You can read further background at Responsible Wood — sustainable certification.

Detail

Blackbutt

Another fantastic native, Blackbutt offers a more consistent colour palette, typically a pale straw or light brown. It's exceptionally durable and also has a good fire rating. We find it’s a brilliant choice for flooring and decking when clients want a lighter, more contemporary feel. It accepts stains and oils well, allowing for easy customisation. For independent advice, refer to Timber Development Association.

Detail

Merbau (Kwila)

While not native to Australia, Merbau is one of the most common decking timbers you'll see in Brisbane and the Sunshine Coast. Its popularity comes from its deep, rich red-brown colour and its exceptional durability and stability. It's naturally resistant to rot and termites. The main consideration with Merbau is "tannin bleed," where natural oils can leach out and stain surfaces below when it first gets wet. This can be managed with proper preparation and cleaning. Additional Australian resources are available via BOM — Queensland weather.

The Unsung Hero: Softwoods and Treated Pine

While hardwoods steal the show for appearance, softwoods, particularly Treated Pine, are the backbone of many carpentry projects. Don't let the name "softwood" fool you; when treated correctly, it's an incredibly versatile and durable material.

Structural Framework: Most deck and pergola sub-frames in Queensland are built from Treated Pine. It's strong, cost-effective, and easy to work with.
Termite Resistance: Pine is treated to different "Hazard Levels" (H-ratings). For outdoor structures in our region, H3 or H4 is essential, providing protection against decay and termites. Using the wrong rating is a costly mistake we often see in termite damage repairs.
Versatility: Beyond framing, Treated Pine is also used for fencing, retaining walls, and budget-friendly decking. When used for decking, it doesn't have the same visual appeal as hardwood but can be stained to a desired colour.

Making the Right Choice for Your Queensland Project

Choosing between these types of wood in Australia involves balancing budget, desired look, and long-term maintenance. For a deck surface, the beauty of a hardwood is hard to beat. For the structural base, the cost-effectiveness and protection of Treated Pine make it the professional standard. It’s about using the right material in the right place.

011. Assess the Environment: Is the area exposed to full sun and rain? Is it near the salt air of the Sunshine Coast? This influences your choice.
022. Consider the Look: Do you prefer the rich reds of Merbau, the varied browns of Spotted Gum, or the lighter tones of Blackbutt?
033. Factor in Maintenance: All timber outdoors requires maintenance. Hardwoods need regular oiling or staining to maintain their colour and protect the fibres from UV and moisture.
044. Always Use a Licenced Professional: A licenced carpenter ensures your project is built to Australian Standards (AS) and meets QBCC requirements, guaranteeing it is both safe and durable.

Ready to Start Your Project?

Feeling clearer about your options? The next step is to plan your project. Whether it's a stunning new deck, a shady pergola, or essential structural repairs, using the right timber from the start is the key to a lasting result. If you'd like professional advice tailored to your specific home and needs in Brisbane, Moreton Bay, or the Sunshine Coast, we're here to help. Reach out to Michael at Carpentry Worx for a quote.

Get expert advice on timber selection.
Ensure your project is built to code.
Receive a detailed quote from a licenced builder.
Contact us today via our contact page!

Get a quote · homeowners

Need a Hand From a Brisbane & Sunshine Coast Carpenter?

Carpentry Worx is QBCC licenced and servicing Brisbane North, Moreton Bay and the Sunshine Coast. Get a quote on your project today.

Request a Quote Call 0416 182 723

Useful Links

Keep Reading

All articles

A Practical Guide to the Best Types of Wood in Australia for 2026

Popular Australian Hardwoods for Outdoor Durability

Spotted Gum

Blackbutt

Merbau (Kwila)

The Unsung Hero: Softwoods and Treated Pine

Making the Right Choice for Your Queensland Project

Ready to Start Your Project?

Need a Hand From a Brisbane & Sunshine Coast Carpenter?

Useful Links

Related Articles

Frequently Asked Questions