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.
Grey Composite Decking Board
- Type: Reversible Grooved
- Material: Wood Fibre & HDPE Plastic
How Many Grey 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.
Calculate Boards Only ↓Full Project Calculator
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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From the Home Choice Collection, our Grey Composite Decking Board blends practical design with real-world performance. The grey shade is a popular choice for families because it stays comfortably cool on bare feet during summer. It features a reversible design, though for the best PTV slip-resistance score—especially in wet British weather—we recommend laying the narrow grooved side horizontally across your main flow of foot traffic.
Because it is a lighter shade, it can show everyday footprint marks a little more easily than darker boards, but upkeep is incredibly straightforward. Any minor surface scratches on the grooved side can be quickly blended out by gently rubbing along the grain with a soft wire wool brush. Crafted from a durable wood fibre and HDPE blend, these boards install easily using our hidden fastener system for a secure, screw-free finish and pass strict EN 15534 standards for thermal expansion, ensuring they won’t warp or swell like traditional timber. Backed by a 10-year residential warranty, it delivers a clean, seamless look with long-lasting peace of mind. To see how this shade compares with others, feel free to browse our complete range of composite decking boards.
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.
Timeless Neutral Colour
Versatile Reversible Finish
All-Weather Durability
Expert Advice On Our Grey Composite Decking
Want to know more? Our in-house expert, Allan, gives his take on our Grey 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:
When customers ask me how to get the most out of these grey boards, I always talk about slip resistance. The grooved side inherently offers roughly a 10% higher slip resistance (PTV 32) compared to the standard wood grain finish (PTV 28).
But here is the real installer secret for British weather: if you lay the boards so your main foot traffic walks across the grooves rather than along them, the PTV score jumps to 45. That is a massive increase in grip. If you are building near a wet area or framing out steps, always install the grooved side facing up and run the boards perpendicular to your walking path. It’s a simple layout trick that maximizes safety without sacrificing that clean, modern finish.
Benefits To Grey Composite Decking
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Understated Modern Style
Combining traditional timber grooving with a modern, long-lasting solution, the stylish grey finish naturally softens by 20–25% into a permanent weathered look.
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DIY-Friendly Installation
Weighing just 8.7kg, these are designed with pre-machined hidden grooves for seamless clips, ensuring consistent expansion gaps.
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Reversible Design
Choose between two finishes on our 22mm thick boards: a traditional wide groove, or a narrow groove for maximum grip.
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Eco-Conscious Materials
Made using 50% sustainably sourced wood fibres and 45% HDPE plastic, preventing the moisture absorption that causes traditional timber to rot.
Grey Board's Specifications
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Length
3600mm
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Width
150mm
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Board Coverage
Approx. 0.54m2
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Thickness
22mm
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Colour
Grey
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Installation
Grooved (requires decking clips)
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Weight (per board)
Approx. 8.7kg
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Material
High-Density Polyethylene & Wood Fibre Composite
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Warranty
10 Years Residential
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
Calculate
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 Grey Decking
1 Will the grey decking boards fade over time?
Yes, like all grey composite products, you can expect a natural colour softening of up to 20–25% due to sun exposure. This mellowing effect enhances the timber-like appearance, giving a weathered look that is lighter than the original colour. Please bear this in mind when choosing your shade, as it will gradually lighten over time.
2 Are these grey composite boards suitable for DIY installation?
Definitely. With grooved edges designed for hidden fasteners, the boards are easy to align and secure, with no specialist skills or tools required.
3 Are the grey composite decking boards safe for pets and children?
Absolutely. The surface is splinter-free, slip-resistant, and doesn’t overheat like metal decking, making it a safe choice for paws and little feet.
4 Do I need to treat or stain the boards?
Not at all. Unlike timber, these grey composite boards never need staining, sealing, or varnishing. Just give them a clean with soap and water every so often.
5 What if I’m not sure about the grey colour?
We always recommend ordering a free sample before purchasing. Screens can distort colours, and samples give you a true sense of the texture and tone. You’ll also be able to see how they look in natural light and alongside other key design features in your garden.
As Seen In
