Build your whole deck around our ash grey boards here. The calculator walks you through each part, from subframe and joists to clips, starter clips, fascia and edging trims. Enter your length and width in metres and skip any step for parts you already have. Customers choosing ash grey — and grey decking in general — like to see the shade in person before they commit, and ash grey more than most because of its mixed tones. Once you’ve built your full project, order a free sample so you can check the colour against your design and any other materials rather than trusting a screen.
Ash Grey Composite Decking Board
- Type: Reversible Wood Grain
- Material: Wood Fibre & HDPE Plastic
Colour:Ash Grey Composite Decking Board
Size:
How Many Ash Grey Boards Do You Need?
Quick Board Calculator
Just need to know how many ash grey 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 full project around our ash grey boards, step by step, and skip anything you don’t need.
Build Full Project ↓Total
£ 23.39
Quantity
Inspired by weathered timber and designed with modern flair, our Ash Grey Decking Board combines rustic charm with next-gen durability. It’s the board for people who like the look of silvered oak but want the reasons composite decking has replaced it: no rot, no splinters, no annual treatment. Mixed ash tones run through a woodgrain texture, so no two boards are the same.
Ideal for patios, terraces, and garden hideaways, it’s built from recycled wood fibre and HDPE for strength, scratch resistance, and colour stability. The reversible profile lets you switch between a realistic grain and narrow grooves, while the slip-resistant, splinter-free surface makes it as practical as it is beautiful.
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.
Truly Unique Finish
Superior Durability
15 Year Warranty
Expert Advice for Ash Grey Decking
Want to know more? Our in-house expert, Allan, gives his take on our Ash 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 Jeffrey BSc. Eng. (Hons), Composite Materials Specialist, Environmentalist, and CEO of Ultra Decking:
“Our original composite decking lines were all about perfecting the blend of quality and affordability. But we didn’t stop there. We listened to our customers as they asked the next logical question: ‘How can we get even closer to the authentic look of real, weathered timber?’
Our answer was to stop thinking in single colours. For our Mixed Grey, we developed a process to blend lighter and darker shades of grey throughout a single board. This, combined with our unique wood grain texture, creates a level of depth and natural inconsistency that you just can’t get with a standard board. It’s the perfect choice for a truly authentic, high-end look without any of the maintenance.”
Key Benefits Of Our Ash Grey Boards
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Authentic Mixed Colour
No two boards are the same. The natural wood-effect look captures the unique wood grain pattern and colour of exotic wood, truly one of a kind!
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Highly Durable
Engineered with the latest manufacturing techniques for strength and longevity.
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Enhanced UV & Weather Resistance
Designed to withstand Britain’s rain, sun, and frost without warping or rotting. Slip- and scratch-resistant, ideal for barefoot walks and busy family life.
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Modern Design
Enhanced luxury and appearance compared to the classic woodgrain seen on the market for almost a decade.
Ash Grey Board Specifications
Check the Ash Grey board’s dimensions below before you measure up, so steps, borders and any features in your design work out exactly. If you’re working the boards out by hand rather than with our calculator, An expert tip is: allow for the gap between boards: a 148 mm board needs a 3 mm side gap, so count each board as 148 + 3 mm across.
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Length
3600mm
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Width
148mm
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Board Coverage
0.533m²
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Finish
Reversible Wood Grain
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Thickness
25mm
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Colour
Mixed | Anthracite Grey | Grey
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Installation
Grooved (requires decking clips)
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Weight (per board)
Approx. 9kg
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Material
High-Density Polyethylene & Wood Fibre Composite
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Warranty
15 Years Residential
Quick Calculator: How Many Ash Grey Boards Do You Need?
You may already have your build planned out. If so, our quick calculator works out just the boards you need, with recommended accessories like our trims listed below so you can add them if needed. Ash grey has a wood grain pattern with mixed tones running through it, and that variation is why most customers pick it. It sits well against dark grey garden furniture and doors, and if you want a contrast in the same family, ash grey and anthracite grey decking are the two our customers compare most often.
Area
0 m²
Required Boards:
0
Recommended Products
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
Full Project Calculator: Every Material and Accessory for Your Ash Grey Deck
Calculate
What Are the Delivery Options for Ash Grey Decking?
Delivery options and times for ash grey decking boards are below. Free delivery is on our own vans, with orders grouped by area, and is estimated at 5 to 7 working days. Urgent delivery is £79.99 and estimated at 1 to 4 working days. Clips, trims and other small items are delivered with your boards, and you can collect from our warehouse free of charge. If you won’t be in on the day, tell us where the boards can be left; otherwise a redelivery may be needed.
| 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 |
Want Know More About Our Ash Grey Boards
1 Will the Ash Grey boards fade over time?
Yes, like all composite decking, some fading will occur due to UV exposure, up to around 20% on this shade. It is expected and factored into the colouring, and on a mixed-tone board it adds to the weathered timber look rather than taking from it.
2 Can I install these wood grain boards myself?
Yes. The grooved edges are designed for hidden fastener systems, allowing easy installation with a clean finish. Whether you’re an experienced DIYer or a first-timer, our installation guide walks you through the process.
3 Is this ash grey decking safe for children and pets?
Yes. The boards are splinter-free and slip-resistant, ideal for little feet, muddy paws and all the mischief in between.
4 How do I choose between the woodgrain and grooved finish?
Both surfaces come with every board. Use the woodgrain side for a natural, rustic feel, or flip to the grooved side for a modern, structured appearance. You can also mix both for a custom look.
5 How many ash grey boards will I need?
Use the quick calculator on this page: enter your deck’s length and width for a board count, and tick the 5% cutting margin to cover trimming and cuts. Each 3.6m board covers roughly 0.533 m²; if you’re working it out by hand, this board is 148mm wide, so count each one as 151mm across with its 3mm gap.
6 How can I be sure the ash grey colour suits my outdoor space?
Order a free sample. Screens display colours differently, and a mixed-tone board more than most needs to be seen in your own garden, held against your doors, windows and furniture.
As Seen In
