When you’re planning a deck in Sydney, one of the biggest decisions is material selection. Should you go timber or composite? And within those categories, which specific product will give you the best value, durability, and maintenance experience?
In this guide, we’ll compare the top decking materials available in Sydney in 2026, break down their pros and cons, and help you choose the right option for your home, budget, and lifestyle.
The Big Two: Timber vs. Composite Decking
First, let’s establish the main categories:
- Timber Decking: Solid wood — either treated softwood (pine) or durable hardwoods (Merbau, Spotted Gum, Blackbutt, Cumaru)
- Composite Decking: Engineered material — wood fibre blended with plastic resin (e.g. Evalast Pioneer, Modwood, Trex)
Each has real advantages. Let’s dig into the details.
Treated Softwood Timber (Pressure-Treated Pine)
What it is: Pine timber treated with chemical preservatives to resist rot and insect damage. It’s the most common choice for budget-conscious Sydney homeowners.
Pros:
- Most affordable material ($120–$180/m² installed)
- Beautiful natural wood grain and colour
- Easy to repair — you can sand, stain, or replace individual boards
- Traditional aesthetic that suits most architectural styles
Cons:
- Requires regular maintenance — staining/sealing every 2–3 years
- Can splinter if left untreated
- Susceptible to rot if water sits on it (poor drainage = problems)
- Sydney’s coastal salt air accelerates degradation, especially in beachside areas
- Lifespan: 12–15 years with maintenance; 8–10 years without
- Maintenance cost: $1,500–$2,500 every 5–7 years
Best for: Budget projects, inland suburbs (away from salt spray), homeowners who enjoy working on outdoor spaces, and those planning shorter-term ownership (5–10 years).
Hardwood Timber (Merbau, Spotted Gum, Blackbutt)
What it is: Durable Australian hardwoods that naturally resist rot and insects due to their density and chemical composition.
Pros:
- Extremely durable — 20–30 year lifespan with minimal care
- Resistant to rot and insect damage naturally
- Stunning appearance — rich tones that develop character over time
- Better slip resistance than softwood (great for wet climates)
- Higher-end aesthetic — looks premium and commands better resale value
Cons:
- Significantly more expensive ($250–$400/m² installed)
- Still requires maintenance — occasional sanding or oiling to maintain colour
- Harder to work with — can be difficult to cut or modify
- Availability can be limited or variable in quality
- Susceptible to cupping and twisting if not properly installed
Best for: High-end projects, beachside and coastal properties, long-term homeowners (10+ years), and those who appreciate natural wood aesthetics and don’t mind periodic upkeep.
Composite Decking (Evalast Pioneer, Modwood, Etc.)
What it is: Engineered boards made from wood fibre and polyethylene plastic, designed to replicate wood appearance while minimising maintenance.
Pros:
- Virtually zero maintenance — no sanding, staining, or sealing required
- Won’t rot, splinter, or attract termites
- Consistent colour and appearance throughout (no natural variation)
- Better slip resistance than timber (especially important with pools or moisture)
- Long lifespan — 25–30 years with warranty backing
- More environmentally friendly (some brands use recycled materials)
- No toxic chemical treatments needed
Cons:
- Higher upfront cost ($150–$220/m² for quality composites like Evalast)
- Can fade in direct sunlight (though modern composites resist this much better)
- Gets hot in intense sun — can be uncomfortable to walk on barefoot
- Can stain from organic matter (mulch, leaves) if not cleaned
- Less authentic “wood feel” compared to real timber
- Limited repair options — you typically can’t sand or refinish a single board; replacement is the usual fix
Best for: Low-maintenance lovers, coastal and beachside homes (salt spray won’t degrade), pools/wet areas, busy professionals, and homeowners planning to stay 15+ years.
Direct Cost Comparison: 20m² Deck Project
Treated Softwood (Pressure-Treated Pine):
- Material cost: $2,400–$3,600
- Labour: $1,500–$2,500
- First stain/seal: $400–$600
- Initial total: $4,300–$6,700
- Maintenance (per 5 years): $1,500–$2,000
- 10-year total cost of ownership: $7,300–$10,700
Hardwood (e.g. Merbau):
- Material cost: $5,000–$8,000
- Labour: $2,000–$3,500
- First oil treatment: $300–$500
- Initial total: $7,300–$12,000
- Maintenance (per 7 years): $800–$1,200
- 10-year total cost of ownership: $8,100–$13,200
Composite (e.g. Evalast Pioneer):
- Material cost: $3,000–$4,400
- Labour: $2,000–$3,000
- First year maintenance: $0
- Initial total: $5,000–$7,400
- Annual maintenance: $100–$200 (occasional cleaning)
- 10-year total cost of ownership: $6,000–$9,400
Winner by total cost over 10 years: Composite or treated softwood (roughly tied), but composite avoids surprise maintenance costs.
Sydney-Specific Factors to Consider
Salt Spray (Beachside): If you’re in Bondi, Coogee, Manly, or similar coastal areas, hardwood or composite are far superior to softwood. The salt air will degrade treated pine quickly.
Humidity & Rainfall: Sydney’s humid summers and unpredictable rain mean good drainage is essential with any timber. Composite handles moisture better without rotting, but may show mildew in shaded areas (easily cleaned).
Heat & Sun Exposure: North/east-facing decks get intense sun. Hardwood may cup; composite may fade (though modern composites like Evalast resist fading). Softwood will weather quickly.
Termite Risk: Sydney suburbs like Strathfield, Parramatta, and Western Sydney have moderate to high termite risk. Composite and hardwood are naturally resistant; softwood needs chemical treatment.
A Note on Quality Within Categories
Not all composites are equal. Budget composite brands fade, stain easily, and lose structural integrity over time. Premium brands like Evalast Pioneer use thicker layers, better UV stabilisers, and higher wood-fibre content — they cost more upfront but deliver better longevity.
Similarly, not all hardwoods are the same grade. Spotted Gum and Merbau from certified suppliers outperform cheaper imports.
Our Recommendation
At 5 Star Decking, we recommend:
- Inland Sydney, budget-conscious: Treated softwood with a solid maintenance plan (stain every 2–3 years). Total cost advantage, acceptable lifespan.
- Beachside or high-moisture areas: Premium composite (Evalast Pioneer) or hardwood (Merbau). Long-term value and salt-spray resistance justify the cost.
- Long-term low-maintenance priority: Composite. The upfront cost difference pays for itself by year 7–8 through avoided maintenance.
- Premium aesthetic, moderate maintenance tolerance: Hardwood (Spotted Gum or Blackbutt). Stunning looks, natural durability, manageable upkeep.
Ready to Choose Your Material?
We can guide you through the options, show you samples in-situ, and give you honest advice based on your Sydney location, lifestyle, and budget.
Get a Free Material Consultation →
Call us on 0433 334 415 to discuss your project, see samples, and receive a no-obligation quote.
5 Star Decking: Premium decking solutions for Sydney homes since 2015. Trusted by over 1,000 families for quality, reliability, and expert advice.
