Timber vs Composite Decking in Singapore: Full Comparison

Decking in Singapore’s Tropical Climate

Outdoor decking transforms balconies, roof terraces, pool surrounds and garden spaces into functional living areas. In Singapore, decking must withstand year-round UV exposure, heavy tropical rainfall, humidity levels between 70% and 95%, and temperatures that push surface materials well above 40 degrees Celsius on sun-exposed days.

Two material categories dominate the Singapore decking market: natural timber and composite (also called wood-plastic composite or WPC). Each has distinct strengths and limitations. This guide compares them honestly so you can make the right choice for your space.

Timber Decking: The Natural Choice

Timber decking uses solid planks of hardwood — most commonly tropical species prized for their natural rot resistance and density. In Singapore, the following species are the most widely used:

Popular Timber Species

Species	Durability Class	Key Characteristics	Cost (per sq ft, installed)
Chengal	Class 1	Extremely hard, dense, naturally rot-resistant. The traditional choice for Singapore outdoor decking.	$15–$25
Balau (Red/Yellow)	Class 1–2	Dense hardwood, good weather resistance. More affordable than chengal with similar performance.	$12–$20
Ironwood (Belian)	Class 1	Among the hardest timbers available. Excellent durability but difficult to work with.	$15–$25
Teak	Class 1	Natural oils resist moisture and pests. Premium appearance but highest cost.	$20–$35

Pros of Timber Decking

• Natural beauty: Real wood grain, colour variation and texture that no synthetic material can fully replicate
• Cooler surface: Timber absorbs less heat than composite, making it more comfortable to walk on barefoot in direct sun
• Can be sanded and refinished: A heavily weathered timber deck can be sanded back and re-oiled to look close to new
• Proven track record: Chengal and balau decking has been used in Singapore for decades with demonstrated longevity

Cons of Timber Decking

• High maintenance: Requires oiling every 6 to 12 months to maintain colour and protect against moisture. Without oiling, timber greys within 6 to 12 months.
• Vulnerable to rot and termites: Even Class 1 timbers can develop rot in joints, end-grain and areas with poor drainage if not properly maintained
• Splinters: Over time, the surface weathers and can develop splinters — a concern for barefoot use around pools
• Colour inconsistency: Natural variation means boards may not match perfectly. Some homeowners consider this a feature, others a flaw.
• Sustainability concerns: Tropical hardwoods raise questions about deforestation. Look for FSC or PEFC certification to ensure responsible sourcing.

Composite Decking: The Low-Maintenance Alternative

Composite decking is manufactured from a blend of recycled wood fibres and plastic polymers (typically polyethylene or polypropylene), combined with UV stabilisers and colour pigments. The resulting material is shaped into planks that resemble timber but require far less maintenance.

Pros of Composite Decking

• Minimal maintenance: No oiling, staining or sealing required. Periodic cleaning with soap and water is sufficient.
• Rot-proof and termite-proof: The plastic content makes composite immune to biological decay and pest damage.
• Splinter-free: The manufactured surface remains smooth throughout its lifespan, making it ideal for pool areas and barefoot use.
• Consistent appearance: Each board matches the others closely, delivering a uniform, clean aesthetic.
• Colour retention: Quality composites with co-extruded caps resist UV fading far better than untreated timber.
• Eco-friendly options: Many composites use recycled content, reducing demand for virgin timber.

Cons of Composite Decking

• Heat retention: Composite surfaces can get significantly hotter than timber in direct sun — a genuine consideration for uncovered Singapore decks.
• Cannot be sanded: If the surface is scratched or damaged, the affected boards must be replaced.
• Higher upfront cost: Premium composite decking costs more than most timber options per square foot.
• Synthetic feel: Despite realistic wood-grain textures, composite does not feel like real wood when touched. Some homeowners find this a compromise.
• Thermal expansion: Composite planks expand and contract with temperature changes. Proper gapping during installation is essential.

Head-to-Head Comparison

Feature	Timber (Chengal/Balau)	Composite
Appearance	Natural wood — unique grain	Realistic but uniform
Surface Temperature	Moderate	Hot in direct sun
Maintenance	High — oil every 6–12 months	Low — wash occasionally
Lifespan	15–25 years (with maintenance)	20–30 years
Rot/Termite Resistance	Good (varies by species)	Excellent — immune
Slip Resistance (Wet)	Moderate — improves with grooves	Good — textured surface
Splinters	Possible over time	None
Refinishing	Yes — sand and re-oil	No — replace damaged boards
Cost (installed, per sq ft)	$10–$25	$12–$28
10-Year Maintenance Cost	$3,000–$6,000	$200–$500

Which Is Better for Your Project?

Choose Timber If:

• You value the authentic look and feel of natural wood above all else
• Your deck is shaded or partially covered, reducing UV exposure and heat
• You are willing to commit to regular oiling and maintenance
• The deck is for a landed property where a natural aesthetic complements the garden

Choose Composite If:

• You want a low-maintenance deck that looks good year-round without treatment
• The deck is around a pool where splinter-free surfaces are essential
• You prefer consistent colour and appearance across all boards
• You want to avoid the long-term maintenance costs associated with timber
• The total cost of ownership (purchase + 10 years of maintenance) matters more than upfront price

Installation Considerations in Singapore

Both timber and composite decking require a proper subframe — typically aluminium or treated timber joists — raised above the underlying surface to allow drainage and air circulation. Key installation considerations include:

• Drainage: Ensure a minimum 1:100 fall toward a drain point. Standing water accelerates timber rot and promotes algae growth on composite.
• Ventilation: Maintain a gap of at least 25 mm between the decking surface and the subfloor for air circulation. This is critical in Singapore’s humid climate.
• Expansion gaps: Composite decking requires gaps between boards and at perimeters to accommodate thermal expansion. Follow the manufacturer’s specifications precisely.
• Fastening: Hidden clip systems create a clean surface free of visible screws. Both timber and composite can use concealed fasteners.

Colour Options and Ageing Characteristics

How your deck looks on day one is only part of the story. Both timber and composite change appearance over time, and understanding this helps set realistic expectations.

Timber: Freshly oiled timber decking displays rich, warm tones — golden-brown for chengal, reddish-brown for balau, honey-gold for teak. Without regular oiling, all timber species gradually grey as UV exposure breaks down the surface lignin. Some homeowners embrace this silvery patina as a natural, coastal aesthetic. Others prefer to maintain the original colour through biannual oiling.

Composite: Quality composites with co-extruded protective caps retain their colour well, typically fading by only 5% to 10% over the first two years before stabilising. Lower-cost composites without cap technology may fade more significantly, particularly in dark colours exposed to intense afternoon sun. Choose lighter tones for fully exposed decks — they show less fading and absorb less heat.

Both materials are available in a range of wood tones from light ash to dark walnut, giving you design flexibility regardless of which material you choose.

Explore Your Decking Options

Whether you lean toward the natural warmth of timber or the convenience of composite, the right decking transforms your outdoor space into a genuine extension of your home. Goodrich Global’s outdoor decking collection includes options suited to Singapore’s tropical conditions.

For indoor spaces that flow onto the deck, explore the full flooring range to create a cohesive look from living room to balcony. Request free samples to compare timber and composite decking finishes side by side.