Decking boards composite WPC or HKC for decking 400cm can be ordered in multiples of 2
Composite decking boards WPC.

Features WPC decking board composite black 400cm (21x145mm):

+ Length: 400cm
+ Sustainable solution
+ Available in 21mm, 25mm and 28mm
+ 14.5 cm wide
+ Plastic with wood fibers
+ Highest quality High Density Polyethylene, Recyclable
+ Environmentally friendly
+ Colourfast
+ No splinters
+ Lifespan of up to 25 years
+ Low maintenance
+ Weather resistant
+ UV resistant
+ Can be used on both sides
+ FSC certified hardwood dust from responsible forest management
+ Durability class I.
+ 25 year guarantee
+ Floor supports available as an option
+ Also have a look at our composite fencing.

WPC Decking Board Composite Black 400cm (21x145mm) – Extra Long Premium Low-Maintenance Decking

The WPC Decking Board Composite Black 400cm (21x145mm) is a premium extra-long Wood Plastic Composite decking board designed for modern, durable and maintenance-free outdoor flooring. Combining wood fibers with high-performance polymers, it offers the natural look of timber with the long-term benefits of composite materials.

With its impressive 400cm length, this decking board significantly reduces the number of visible joints, creating a seamless and high-end finish. The sleek black color enhances contemporary garden designs, terraces, and architectural outdoor spaces.

Key Features

Wood Plastic Composite (WPC) material
Color: Black – modern architectural appearance
Dimensions: 21x145mm – Length: 400cm
Extra long boards for minimal joints
Maintenance-free – no oiling or staining required
Weather-resistant, rot-proof and splinter-free

Why Choose 400cm WPC Decking Boards?

400cm WPC decking boards are ideal for high-end projects where a clean, uninterrupted surface is desired. The extended length reduces installation joints, resulting in a more luxurious and visually continuous decking surface.

Unlike natural wood, WPC does not warp, crack or require regular maintenance, making it a cost-effective long-term solution for outdoor environments.

Applications

Large garden decking terraces
Modern outdoor living spaces
Commercial landscaping projects
Luxury rooftop terraces
Poolside decking installations

Installation Guide – How to Install WPC Decking Boards

Prepare a stable substructure: Use level and ventilated joists suitable for composite decking systems.
Ensure proper spacing: Allow for expansion gaps between boards for temperature changes.
Lay boards carefully: Align 400cm boards precisely for a straight finish.
Fix using clips: Use compatible WPC hidden fastening systems or stainless steel screws.
Finish installation: Clean surface to remove installation dust and debris.

Maintenance Tips

Clean with water and mild soap when needed
No oiling, painting or staining required
Remove leaves and organic debris regularly
Avoid abrasive cleaning tools

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FAQ – WPC Composite Decking Board 400cm Black

Why choose 400cm WPC decking boards?
They minimize joints and create a seamless, premium-looking decking surface.

Is WPC decking fully maintenance-free?
Yes, only basic cleaning is required; no oiling or staining is needed.

Is this suitable for outdoor weather conditions?
Yes, WPC is designed to withstand rain, sun and temperature changes without damage.

Is it suitable for commercial use?
Yes, it is widely used in both residential and commercial outdoor projects.

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WPC Decking board composite black 400cm (21x145mm)