This is a step-by-step calculator that gives you all the options, though you don't need to feel overwhelmed as you can skip any step along the way. Those steps are simply there so you don't forget about fascia boards, edging, clips, and your subframe. You simply start by selecting your design, length, and colour, key in your length and width in metres, and go through each step based on everything we've learned you will need—skipping what you don't and adding what you do—while it works everything out for you.
4.8m Wood Grain Composite Decking Board
How Many 4.8m Wood Grain Boards Do You Need? Calculate Your Area
Quick Board Calculator
Just need to know how many boards your project takes? Enter your length and width to get an instant board count and cost estimate for your area.
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It's easy to overlook hidden clips, starter clips, edging trims or joists. Build your kit step-by-step and skip anything you don't need.
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Meet the powerhouse of our Premier Collection: the 4.8m Wood Grain Composite Decking Board. Specifically developed in response to customer demand, this extended-length board delivers fewer joins, faster installation, and a flawless finish across large decking areas. It’s the ideal solution for professional landscapers and perfectionist DIYers looking to make a bold statement without wasting time on extra cuts.
Crafted with a durable four-chamber hollow core and a robust 22mm thickness, this board combines superior strength with a lighter touch. The sleek, reversible design offers two stylish options in one: a richly textured wood grain finish for natural charm or narrow grooves for a more contemporary aesthetic. The upgraded surface treatment ensures enhanced colour longevity, fade-resistance, and a sophisticated Anthracite Grey finish that fits effortlessly into modern outdoor spaces. It’s premium performance, engineered for scale. To see how this compares to our other sizes, explore our full composite decking range.
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.
Extra-Long 4.8m Boards
Enhanced 25mm Thickness
Advanced Surface Finish
Expert Advice for 4.8m Composite Decking
Want to know more? Our in-house expert, Allan, gives his take on our 4.8m Composite 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:
What’s your longest decking board? Do you sell 4.8m lengths?”
It’s a question we’ve been asked for years—and for good reason. In traditional decking, 4.8m is a common length that professionals use to cover large areas quickly. So, we listened.
We’re proud to offer 4.8m boards in our most popular wood grain finishes. For large, expansive decking projects, these boards dramatically speed up installation and reduce the number of joins, creating a seamless, professional finish.
You may wonder why longer boards are harder to find and slightly more expensive. The reason is simple: logistics. A 4.8m board is too long for standard delivery networks and requires a specialist vehicle. This adds to shipping and handling costs, which is reflected in the price. We believe in being transparent so you can make the most informed choice for your project.
What Are The Benefits of Using 4.8m Boards
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Seamless Coverage for Large Areas
The extra-long 4.8m length is specifically designed to minimise the number of cuts and joins, giving you a cleaner, more professional finish across expansive decks while saving valuable installation time.
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Striking & Versatile Grey Tones
Available in a timeless Grey and deep Anthracite Grey, these contemporary shades provide a sophisticated foundation for any modern outdoor setting.
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Dual-Sided Style
Choose from a deep, natural wood grain or flip to a sleek grooved side, two great looks in one reversible board.
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Eco-Conscious Construction
Made using recycled plastics and sustainably sourced wood fibres, it’s a greener choice that doesn’t compromise on performance.
Specifications
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Length
4800mm
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Width
150mm
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Finish
Wood Grain
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Thickness
22mm
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Available Colours
Anthracite Grey | Grey
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Installation
Grooved (requires decking clips)
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Weight (per board)
Approx. 12kg
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Material
High-Density Polyethylene & Wood Fibre Composite
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Warranty
10 Years Residential
Additional Information
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Calculate Your Composite Decking Boards & Project Kit
You may already know what you need or have your build planned out. In this case, our quick calculator lets you work out just the boards you need for your project—with recommended accessories populated below so you can easily add them if needed.
Area
0 m²
Required Boards:
0
Composite Joists – Size: 3m x 100mm x 50mm
C24 Timber Floor Joist 47mm x 100mm x 3.6m
Composite Posts
Timber Posts Treated 100mm x 100mm
Slim Hidden Fasteners – Decking Clips
Plastic Decking Fasteners
Ultra Composite Decking Clip
Calculate Your Decking
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Delivery Information
| Delivery Type | How Long? | Delivery Cost |
|---|---|---|
| Urgent | Estimated 1-4 Working Days | £79.99 |
| Normal* | Estimated 5 to 7 Working Days* | FREE |
| 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 |
| *Normal | Distance Deliveries Can Exceed Estimate | FREE |
FAQ About Our 4.8m Composite Decking
1 Will the colour fade over time?
A slight lightening of the colour (up to 20%) may occur during the first few months due to natural UV exposure. This is expected and has been accounted for in the initial colour design. Thanks to the enhanced surface treatment, the boards retain a rich, even tone for years to come.
2 Can I install this board myself?
Yes! Despite its length and strength, the four-square hollow design keeps each board surprisingly lightweight. Paired with grooved edges for hidden fasteners, this makes installation straightforward, even for first-time DIYers.
3 Is this board really reversible?
Absolutely. One side features an embossed wood grain for a realistic timber look, while the reverse offers a grooved texture for a clean, linear style. Choose the finish that suits your space, or mix both for added design flair.
4 Do I need to treat or paint the boards?
Not at all. These composite boards are designed to withstand the elements without any sealing or staining. They’re ready to use and easy to maintain from day one.
5 Is it an eco-friendly product?
Yes. Our 4.8m boards are made from a blend of recycled wood fibres and reclaimed plastics, making them an eco-friendly choice for sustainable garden design.
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