Timber Decking
Timber decking is the classic choice for outdoor living, with natural grain, rich colour and proven durability. We supply a wide selection of hardwood decking, including Merbau, Spotted Gum, Blackbutt, Ironbark and Silvertop Ash, along with treated pine, for residential and commercial decks and alfresco areas.
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Decking
Quality Decking for Australian Homes and Businesses Looking for stylish and resilient composite or timber decking that...
Decking applications
How to choose the right Timber Decking
Start with the look you want. Merbau brings golden-brown to deep red tones and a distinctive wavy grain. Spotted Gum ranges from light grey to deep brown and takes oils and stains well. Blackbutt is a light golden timber that suits coastal and Scandinavian-inspired designs, while Ironbark offers pale grey to red-brown tones.
For long life and heavy use, dense hardwoods like Spotted Gum and Ironbark are the strongest performers. For a cost-effective hardwood, Merbau is a durable option, and pre-oiled boards are available.
In bushfire-prone areas, several hardwoods are classed as bushfire-resistant timbers. Blackbutt is fire-rated up to BAL 29, and Merbau and Silvertop Ash are also fire-resistant choices. Always confirm the species and installation requirements against your site’s assessed BAL.
For the most affordable deck, treated pine is a versatile option that can be stained or oiled to suit. Not sure which species suits your project? Talk to the Big River team or visit your nearest location.
Why choose Timber Decking?
Where is Timber Decking used?
Timber decking is used across residential and commercial projects, from backyard decks, alfresco areas and pool surrounds to commercial terraces and boardwalks. Hardwoods like Blackbutt are popular on coastal homes, while Spotted Gum and Ironbark suit high-traffic areas and projects where long service life matters.
Timber Decking vs Other Materials
Timber is the most natural, and most customisable, decking material, but it asks the most of you in maintenance. Regular cleaning, oiling or sealing helps protect the finish and extend the life of the deck. If you want a timber look with less upkeep, see our composite decking. If you need the highest bushfire rating, our fibre cement decking is rated to BAL-FZ.
Hardwood Decking at a Glance
| Species | Colour | Key attributes |
| Merbau | Golden-brown to dark red | Durable and cost-effective with a wavy grain; natural oils help resist shrinking, cracking and splitting; bushfire-resistant; pre-oiled available |
| Spotted Gum | Light grey to deep brown | Termite resistant and long lasting; takes oils and stains well |
| Blackbutt | Golden yellow to light brown | Termite resistant; fire-rated up to BAL 29; suits coastal and Scandinavian styles |
| Ironbark (Red and Grey) | Pale grey to red and brown | One of Australia’s densest and heaviest hardwoods; exceptional durability |
| Silvertop Ash | Brown to light red | Moderately durable and fire-resistant; distinct growth rings and interlocked grain |
Frequently Asked Questions
What is the best timber for decking in Australia?
It depends on your site and style. Spotted Gum and Ironbark are prized for strength and long life, Blackbutt suits coastal and bushfire-prone sites, and Merbau is a durable, cost-effective choice. Treated pine is a more affordable option.
How long does a timber deck last?
With proper care, dense hardwoods such as Spotted Gum and Ironbark can last more than 40 years. Lifespan depends on the species, installation, climate and maintenance, and regular cleaning, oiling or sealing helps prolong the life of any timber deck.
Is timber decking suitable for bushfire-prone areas?
Some species are. Blackbutt is fire-rated up to BAL 29, and Merbau and Silvertop Ash are fire-resistant. Check the species, board profile and installation requirements against your site’s assessed BAL with your certifier.
Do I need to oil or seal a timber deck?
Regular oiling or sealing helps protect timber from sun and moisture and keeps the colour rich. Pre-oiled boards are available, and species like Spotted Gum can be finished with oils and stains to suit your style.
Should I choose hardwood or pine for my deck?
Hardwood offers greater density, durability and natural bushfire performance, so it suits long-lasting decks. Treated pine is more affordable and easy to work with, making it a good fit for budget-conscious projects.
Visit Your Local Big River Location
Find specialist building products and expert advice at your nearest Big River Location.