7 Common Decking Problems—And How Composite Timber Solves Them
Outdoor decking enhances the value and enjoyment of residential and commercial properties alike. From elegant patios and cozy balconies to expansive poolside decks and garden walkways, decks are a functional and aesthetic extension of the built environment. However, traditional timber decking is prone to a number of persistent issues—many of which result in high maintenance costs and early material failure, especially in Singapore’s tropical climate.
Fortunately, composite timber decking, also known as WPC (wood-plastic composite), offers an engineered solution to these common problems. In this article, we’ll explore the 7 most frequent challenges faced by deck owners—and how composite timber, when properly chosen and installed, can effectively overcome them.
1. Problem: Warping, Splitting, and Cracking
Why it happens:
Traditional wood decking is vulnerable to moisture absorption and temperature fluctuations. Over time, especially in a humid and rain-prone climate like Singapore’s, timber can swell, contract, and eventually warp, crack, or split. This not only affects the deck’s appearance but also poses safety risks.
How composite timber solves it:
Composite decking is engineered to be highly dimensionally stable. It contains a balanced mix of recycled wood fibers and polymers (either basic high density polyethylene or advanced polypropylene), which resists expansion and contraction. Unlike natural wood, composite materials are less prone to warping or splitting—even after years of exposure to heat and moisture.
Tip: High-quality brands such as Polydeck offer composite timber decking boards that are manufactured for long-term performance and an experienced in-house team of installers had proven in Singapore for more than a decade.
2. Problem: Rotting and Decay
Why it happens:
Wood is an organic material. When exposed to constant moisture, especially in shaded or poorly ventilated areas, it becomes a breeding ground for fungi and mold. This leads to soft, discoloured, and structurally compromised decking.
How composite timber solves it:
Composite decking is resistant to rot and fungal decay, thanks to its non-organic polymer content. The WPC boards do not absorb water the same way wood does, making them impervious to the microbial breakdown that causes rotting. Some premium boards also feature capped surfaces or protective coatings to further guard against long-term moisture infiltration.
3. Problem: Termite Infestation
Why it happens:
Insects, especially termites, are drawn to natural timber. Once a colony establishes itself within the deck structure, extensive damage can occur—not just to the deck but also to adjoining walls or structures.
How composite timber solves it:
Composite decking is insect-resistant, particularly against termites. The synthetic component of the material acts as a deterrent, and most composites lack the cellulose content termites need to survive. This makes WPC decking a safer, more secure option for long-term installations.
4. Problem: Constant Maintenance
Why it happens:
Timber decking requires frequent upkeep to maintain its structural integrity and aesthetic appeal. Homeowners may need to sand down and varnish the deck every 6–12 months. In high-traffic or humid environments, the effort and cost increase significantly.
How composite timber solves it:
One of the most significant advantages of composite timber decking is its low-maintenance nature. There’s no need for annual sanding, painting, or varnishing. A simple wash with soap and water is enough to keep it looking fresh.
Premium WPC —like those in the Polydeck products —require virtually no maintenance, making them an excellent long-term investment for busy homeowners or commercial property managers.
5. Problem: Slippery and Unsafe Surfaces
Why it happens:
When wet, natural wood can become dangerously slippery. Additionally, over time, splinters can form, especially on older or poorly maintained decks, leading to minor injuries and reduced safety—especially for children and the elderly.
How composite timber solves it:
Composite decking boards are typically engineered with textured, anti-slip surfaces. These designs help maintain grip even in wet conditions. Additionally, because the material doesn’t splinter, it’s safer for barefoot walking.
In high-risk zones such as pool decks or garden walkways, anti-slip composite boards are the preferred choice—and often a regulatory requirement for commercial projects
Tip: Polydeck’s PP Tough is made just for that.
6. Problem: Colour Fading and Aesthetic Deterioration
Why it happens:
UV exposure and rain can degrade the appearance of natural timber, leading to dull, faded, or stained surfaces. Wood can also develop irregular discolouration or mildew stains, further diminishing its appearance.
How composite timber solves it:
Modern composite timber products are UV-resistant and retain their colour far longer than natural wood. Most manufacturers offer boards with pigmented cores and capped surfaces, which resist fading and staining.
With a wide range of colours and woodgrain textures, composite decking delivers long-term aesthetic appeal—ideal for creating stunning, low-upkeep outdoor spaces.
7. Problem: Poor Drainage and Water Ponding
Why it happens:
Traditional decking structures, especially DIY installations, often lack proper water management systems. This leads to standing water on the surface or beneath the deck, accelerating rot, mold, and structural degradation.
How composite timber solves it:
Composite decking systems are typically designed with built-in drainage channels or no-ponding profiles. When paired with professional installation, this results in optimal water flow, reduced standing moisture, and longer deck lifespan.
Companies like Polydeck, with years of experience in Singapore’s climate, will analyse the site situation and supply products (including the sub-structures) with these features and offer expert installation that ensures proper water management from the outset.
Bonus Benefit: Sustainability
Beyond performance, composite timber is a sustainable choice. Many products are made from recycled plastics and reclaimed wood fibers. By choosing composite over traditional tropical hardwoods, consumers help reduce deforestation and plastic waste.
Look for decking brands that adopt eco-friendly manufacturing processes and comply with environmental standards.
Making the Smart Switch to Composite Timber
While traditional wood has its place in architecture and design, it simply doesn’t hold up as well under the unique demands of Singapore’s weather and urban lifestyle. From safety and aesthetics to durability and convenience, composite timber decking provides smart, modern solutions to common decking frustrations.
Whether you’re decking a compact balcony, a garden patio, or a rooftop terrace, the right material makes all the difference. For long-term peace of mind, investing in composite timber—especially from experienced providers with a proven track record—is the logical next step.
Established in 2007, Polydeck has been at the forefront of composite timber decking solutions in Singapore. As one of the country’s pioneers in the field, Polydeck supplies and installs both Basic HDPE and Advanced PP composite timber products for homes and commercial spaces, with a reputation for reliability, innovation, and quality workmanship.