What Timber Should I Use for My New Deck?

February 19, 2025

Building a new deck is an exciting prospect for any homeowner. However, one of the most critical decisions you’ll face is selecting the right timber.  With a myriad of options available, it can be overwhelming to determine what timber is best for a new deck.

You want something to suit your needs, budget, and aesthetic preferences. At Deking Decks, we understand the importance of choosing the perfect timber for your new deck. 

We’ll explore the various factors to consider when selecting timber and provide guidance to help you make an informed decision that will result in a beautiful and durable deck for years to come.

Factors to Consider When Choosing Timber

When selecting timber for your deck, it’s essential to choose a species that offers durability and longevity, especially in Brisbane’s climate. Consider the natural resistance of different timber species to factors such as moisture, rot, insects, and UV exposure. 

Another crucial factor to consider is the maintenance requirements of the timber. Some species may require regular sealing or staining to maintain their appearance and protect against weathering, while others may be more low-maintenance. 

The visual appeal of the timber is also an important consideration. Consider the architectural style of your home, surrounding landscape, and personal preferences when choosing a timber that complements your design aesthetic.

For eco-conscious homeowners, considering the environmental impact of the timber is paramount. Look for timber that is sustainably sourced and certified by reputable forestry organisations. 

Finally, consider your budget and the cost of the timber. While some species may be more affordable upfront, they may require more frequent maintenance or have a shorter lifespan, leading to higher long-term costs. Here are 7 top timbers to help you decide what timber is best for a new deck.

Seven Top Timbers Compared for Your Deck’s Use

Each type of timber offers a unique combination of characteristics, advantages, and disadvantages. Consider your specific needs, budget, aesthetic preferences, and maintenance requirements when selecting the perfect timber for your new deck. 

1. Merbau

Merbau is known for its rich reddish-brown colour, often featuring dark streaks and a distinctive grain pattern.

  • Advantages: Highly durable and resistant to decay, termites, and rot. It also has excellent fire-resistant properties.
  • Disadvantages: Merbau can release tannins, which may stain nearby surfaces. It requires regular maintenance, including sealing and staining, to maintain its colour and appearance.

Merbau is an excellent choice for homeowners seeking a hardwood timber with natural resistance to pests and decay. It’s ideal for decks in high-traffic areas and those exposed to harsh weather conditions.

2. Spotted Gum

Spotted Gum features a varied colour palette, ranging from pale greyish-brown to deep chocolate hues, often with distinctive gum veins and occasional spotting.

  • Advantages: Spotted Gum is highly durable, resistant to termites and decay, and has excellent fire-resistant properties. It requires minimal maintenance and retains its natural beauty for years.
  • Disadvantages: While relatively low-maintenance, Spotted Gum may require periodic cleaning to remove dirt and debris.

Spotted Gum is a versatile option suitable for various decking applications. Its natural beauty and durability make it ideal for residential and commercial projects.

3. Ironbark

Ironbark is known for its deep reddish-brown to dark brown colour, often with black streaks and a pronounced interlocking grain pattern.

  • Advantages: Renowned for its extreme durability and resistance to termites, rot, and decay. It requires minimal maintenance and is naturally resistant to fire.
  • Disadvantages: Ironbark is a dense and heavy timber, making it challenging to work with. It may also be more expensive than other options.

Ironbark is best suited for homeowners seeking a long-lasting and low-maintenance decking solution. It’s particularly well-suited for decks in high-traffic areas and coastal environments.

4. Blackbutt

Blackbutt features a pale to medium brown colour, often with subtle golden hues and a straight, uniform grain pattern.

  • Advantages: Blackbutt is durable, resistant to decay and termites, and relatively easy to work with. It offers excellent dimensional stability and weathers well over time.
  • Disadvantages: While naturally resistant to decay, Blackbutt may still require periodic maintenance to protect against weathering and maintain its appearance.

Blackbutt is a versatile timber suitable for a wide range of decking applications. Its attractive appearance and durability make it a popular choice for residential decks and commercial projects alike.

5. Treated Pine

Treated Pine has a light yellow to pale brown colour, often with visible treatment marks. It may have a more uniform appearance compared to hardwoods.

  • Advantages: Treated Pine is affordable, readily available, and easy to work with. It can be pressure-treated to enhance durability and resistance to decay and insects.
  • Disadvantages: Treated Pine may be less durable than hardwoods and may require regular maintenance, including staining and sealing, to prolong its lifespan.

Treated Pine is a budget-friendly option suitable for homeowners looking for a cost-effective decking solution. It’s ideal for low to medium-traffic areas and projects with budget constraints.

6. Jarrah

Jarrah is known for its deep red to reddish-brown colour, often with darker streaks and a distinctive grain pattern.

  • Advantages: Jarrah is highly durable, resistant to decay, termites, and rot. It offers excellent weather resistance and has natural fire-resistant properties.
  • Disadvantages: Jarrah can be more expensive than other timber options due to its scarcity and high demand. It may require regular maintenance to preserve its colour and appearance.

Jarrah is a popular choice for decking projects in Australia due to its natural beauty, durability, and suitability for outdoor applications. It’s ideal for homeowners seeking a premium hardwood decking option with excellent longevity and aesthetic appeal.

7. Cypress Pine

Cypress Pine has a pale yellow to light brown colour, often with visible knots and a straight, even grain pattern.

  • Advantages: Cypress Pine is naturally resistant to decay, termites, and rot, making it well-suited for outdoor applications. It offers good dimensional stability and weathers well over time.
  • Disadvantages: Cypress Pine may have a shorter lifespan compared to hardwoods and may require periodic maintenance to maintain its appearance and durability.

Cypress Pine is a popular choice for decking projects, particularly in Queensland, due to its availability, affordability, and natural resistance to pests and decay. It’s ideal for homeowners seeking a cost-effective timber decking option with good durability and weather resistance.

Selecting the perfect timber for your new deck is a decision that requires careful consideration of various factors, including durability, maintenance requirements, aesthetic appeal, environmental impact, and budget. 

By weighing these factors and consulting with a reputable deck builder like Deking Decks, you can ensure that you choose a timber that meets your needs and preferences while creating a beautiful and functional outdoor space that you’ll enjoy for years to come. 

Contact us today to learn more about what timber is best for a new deck in your yard and start planning your dream deck!

DeKing Decks service Brisbane, Redlands, Bayside, Logan, Ipswich, Moreton Bay, Gold Coast, and Sunshine Coast

See our average cost to build a deck with or without a patio. Or use our Deck and Patio Roofing Calculator to get a more accurate estimate.