If you’re planning to build or upgrade a deck, one of the first questions you’ll ask is:
“How much does composite decking cost per square metre in Australia?”
In this guide, we break down composite decking prices per m², what affects the cost, installation considerations, and whether composite decking like PureSolid Decking is worth the investment compared to timber.
Average Composite Decking Cost Per m² in Australia
Composite decking prices in Australia vary depending on board quality, profile, and whether you’re pricing materials only or a fully installed deck.
Composite Decking Material Cost (Boards Only)
| Composite Decking Type | Approx. Cost per m² (AUD) |
|---|---|
| Entry-level hollow boards | $65 – $100 per m² |
| Mid-range solid composite | $100 – $160 per m² |
| Premium capped composite | $160 – $200+ per m² |
PureSolid decking falls into the mid-range to premium category, offering higher density, stronger core structure, and long-term warranties.
Installed Composite Decking Cost Per m²
When installation, subframe, fixings, and labour are included, the total cost is typically:
$250 – $450+ per m² installed
The final price depends on site conditions, deck height, and complexity.
What Affects the Price of Composite Decking?
1. Board Quality & Construction
Not all composite decking is the same. Price differences usually come down to:
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Hollow vs solid core
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Capped (co-extruded) vs uncapped boards
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Density and load-bearing strength
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UV and moisture resistance
PureSolid decking boards are engineered for Australian heat, UV exposure, and moisture, reducing warping and colour fade over time.
2. Deck Size & Design
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Larger decks usually cost less per m²
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Curves, steps, multiple levels, and picture-frame borders increase labour time
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Straight, rectangular designs are the most cost-efficient
3. Subframe & Fixings
Your decking cost doesn’t stop at boards:
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Aluminium or treated pine joists
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Hidden fixing systems
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Edge boards and fascia trims
Higher-quality subframes improve lifespan and structural performance.
4. Installation Conditions
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Ground-level decks are cheaper to install
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Raised decks require footings, posts, and balustrades
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Uneven ground or poor access increases labour costs
5. Location in Australia
Labour rates vary by state and region. Metro areas typically cost more than regional locations due to higher trade demand.
Composite Decking vs Timber: Cost Comparison
| Feature | Composite Decking | Timber Decking |
|---|---|---|
| Initial cost | Higher | Lower |
| Maintenance | Very low | High |
| Oiling / staining | Not required | Every 6–12 months |
| Lifespan | 20–30+ years | 10–15 years |
| Long-term cost | Lower | Higher |
While timber may look cheaper upfront, ongoing costs for oiling, sanding, repairs, and replacement often exceed the initial savings.
Is Composite Decking Worth the Price?
For most Australian homeowners, yes.
Composite decking offers:
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No oiling, painting, or sealing
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Better resistance to heat, moisture, and termites
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Long warranties (often 20–25 years)
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Consistent colour and finish
PureSolid decking is designed to be a once-off investment, not a recurring maintenance expense.
Example: Cost of a 30 m² Composite Deck
Material only:
$3,600 – $5,400
Fully installed:
$7,500 – $13,500+
(Exact cost depends on board selection and site conditions.)
How to Reduce Composite Decking Costs
✔ Choose standard board lengths to minimise waste
✔ Keep deck design simple
✔ Prepare the site before installation
✔ Buy materials directly from a supplier
✔ Compare multiple installation quotes
Why Choose PureSolid Composite Decking?
PureSolid decking is built for Australian conditions and offers:
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High-density composite core
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UV-stable colours
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Low-maintenance surface
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Hidden fixing compatibility
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Long-term structural performance
It’s a smart choice for homeowners who want long-term value, not short-term savings.
Final Thoughts
Composite decking is not the cheapest decking option upfront — but it is one of the most cost-effective choices over time.
If you want a deck that looks great, lasts decades, and doesn’t demand constant maintenance, PureSolid composite decking delivers real value per square metre.