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Up to 15% off | This July Only | Code July15

4m Grooved Composite Decking Board

  • Type: Grooved
  • Material: Wood Fibre & HDPE Plastic

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£ 23.74

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Step into sleek with our 4m Grooved Composite Decking Board, a smarter solution for faster installs and a polished finish. The extended length reduces joins and cuts, making it quicker to lay and easier to perfect. It’s the go-to choice for large projects or bold layouts where clean lines and minimal effort go hand in hand.

Reversible and lightweight, each of these composite decking boards offers traditional wide groove texture on one side and classic grooves on the other, giving you two looks in one. Slip-resistant, splinter-free, and low-maintenance, these boards are available in Anthracite Grey, Classic Grey and Bold Black for timeless curb appeal that lasts through every season.


Please Note: Order Your Free Samples

We highly recommend ordering our free samples to confirm the colours before placing an order, as digital photos can vary significantly between screens.

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Reversible Traditional Grooved Design
Family-Safe Surface
4m Lengths

What Are The Key Benefits To Our 4m Grooved Decking Boards

  • Faster Installation

    Cover more ground in less time. The extended 4m length reduces the number of cuts and boards needed, making it ideal for large areas and time-sensitive projects

  • A Uniquely Repairable Surface

    Based on our years of experience, our grooved decking feature a unique sanded surface. This means that unlike many other composite decks, scratches and minor stubborn stains can be effortlessly blended out—all while never needing to be painted or stained

  • icon of waterproof water resistance
    Clean & Seamless Finish

    Fewer boards and fewer joins create a sophisticated, uninterrupted look that's perfect for modern garden designs.

  • Length

    4000mm

  • Width

    150mm

  • Finish

    Grooved

  • Thickness

    22mm

  • Available Colours:

    Anthracite Grey | Grey | Black

  • Weight (per board)

    Approx. 10kg

  • Material

    High-Density Polyethylene & Wood Fibre Composite

  • Warranty

    10-Year Residential

Expert Advice for 4m Grooved Decking Boards

Want to know more? Our in-house expert, Allan, gives his take on our 4m Grooved Decking, and we’ve selected some of our best guides to help you decide if this is the right choice for you.

A Word from Our Expert, Allan:

Our 4m Grooved decking gives you a classic, traditional finish, but in a longer length designed for a faster installation. As part of our Home Choice collection, it comes with all the recognised benefits of proven quality and great value, in a board that saves you time on your project.

In fact, offering different board lengths is a direct result of our experience. After guiding thousands of customers, one thing became clear: the right board length is just as important as the right colour. We understood this early on and are proud to be one of the first providers in the UK to offer a vast range of lengths to suit any garden, big or small. The reason is simple: we listen.

FAQ About Our 4m Grooved Decking

  • 1Can I install the decking myself?

    Absolutely! Our grooved design is compatible with a simple hidden fastener clip system. If you’re comfortable with basic DIY tools, installation should be a breeze. The larger boards also mean you’ll have a much faster installation time!

  • 2What’s the difference between the two sides of the board?

    One side has a wide grooved texture for a modern, timber-inspired look. The reverse side has a traditional narrow-groove finish that offers superior grip and a timeless appearance.

  • 3Will the grooved boards fade over time?

    As with all composite materials, a small amount of UV-related colour softening (around 20–30%) is natural. However, our boards are designed for long-term colour stability, especially in darker shades like anthracite grey.

  • 4Is grooved decking slippery when wet?

    Not at all. Both sides of the board offer excellent slip resistance, making them ideal for high-traffic outdoor spaces, even after a summer downpour.

  • 5How many boards do I need for my space?

    We recommend measuring the total area of your deck in square metres and consulting our team or decking calculator to get an accurate board count based on your chosen layout and spacing.

  • 6Why are they cheaper compared to wood grain boards?

    They use less material and are engineered to focus on homeowners and residential use. Joist centres must be 300mm and the thin grooved side is advisable for the best in performance on these grooved boards.

Delivery Information

Delivery Information
Delivery Type How Long? Delivery Cost
Urgent Estimated 4-7 Days £149.99
Normal Estimated 8 to16 working days* £79.99
Royal Mail Standard (Small Parcels) 3–5 Working Days £8.00
Royal Mail Standard (Large Parcels) 3–5 Working Days £29.95
Collection Collection from our warehouse FREE
Sample Packs 3–5 Working Days FREE

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