Hollow or Solid? Choosing the Right WPC Decking for Your Project

Modern Wood-Plastic Composite (WPC) decking has gained wide popularity thanks to its versatility and positive reception from homeowners and professionals alike. From parks and scenic areas to streetscapes and private courtyards, WPC decking is now a familiar sight in various outdoor environments. Unlike traditional wood, WPC offers customizable options based on project requirements and budgets.

Over time, WPC decking has evolved from early square-hollow types to modern hollow composite decking, solid decking, and even co-extruded second-generation boards. The technology continues to improve, delivering products with better performance and durability, capable of handling increasingly demanding environmental conditions.

So how should one choose between hollow and solid WPC decking? What are their differences in applications?

Types of WPC Decking

Solid WPC Decking

Solid WPC decking features higher strength, greater load-bearing capacity, and increased density compared to natural wood. It is particularly weather-resistant and durable, making it ideal for:

• Courtyards

• Outdoor landscaping

• High-traffic public spaces, such as parks, boardwalks, and plazas

  
  

These environments benefit from solid decking's superior stability and ability to withstand heavy foot traffic and long-term outdoor exposure.

Hollow Composite Decking

Thanks to the malleability of WPC material, hollow profiles are also possible. Hollow composite decking balances cost-effectiveness with structural integrity, making it better suited for:

• Private gardens

• Terraces

• Residential balconies

  
  

Its hollow design allows for lighter weight and simpler installation while maintaining decent strength.

Applications of Hollow Composite Decking

Hollow WPC decking is lightweight, easy to install, and more economical, making it well-suited for large-surface installations in areas with lower load-bearing requirements.

• Residential Villas & Leisure Areas: Hollow decking is ideal for home patios, balconies, and courtyards. Its permeability helps prevent water buildup, making it great for poolside environments and moisture-prone areas.

• Commercial Office Spaces: Due to its practicality and affordability, hollow decking works well for office terraces, rooftops, and other casual areas. It requires little maintenance and offers good durability and weather resistance.

• Public Parks & Squares: Its slip resistance and breathable design make it suitable for public recreational zones, where it can withstand foot traffic while minimizing water accumulation on the surface.

Applications of Solid WPC Decking

Compared to hollow profiles, solid WPC decking is more robust and better suited for high-performance, high-durability applications.

• Seaside and Waterfront Boardwalks: With excellent moisture and corrosion resistance, solid decking is perfect for coastal or lakeside boardwalks. It remains stable under constant exposure to humidity and salt spray, outperforming hollow types in harsh environments.

• School Recreational Platforms: For spaces that experience frequent use and physical wear—like schoolyards and playgrounds—solid decking provides better stability and safety. Its low-maintenance nature ensures a longer lifespan with minimal upkeep.

• Premium Commercial Spaces: In high-end commercial areas, such as hotels, office terraces, or walkways, solid decking offers a premium feel and superior load capacity. Its structural density supports both aesthetics and functionality in prominent or exposed outdoor spaces.

Sundi: Leading Manufacturer of Both Hollow and Solid WPC Decking

As one of soild wpc decking floor manufacturers, Sundi stands out for its technical expertise and continuous innovation. Whether you're seeking the durability and strength of solid decking or the lightweight and cost-effective benefits of hollow options, Sundi offers top-quality solutions to meet a wide range of customer demands.

With increasing global demand for sustainable and durable materials, Sundi continues to lead the industry by offering high-performance WPC decking products that align with evolving environmental and design expectations.