140mm Wide Composite Decking Boards
Cover square footage faster with fewer visible seams, and create a clean, modern look
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Generous, clean proportions
Our 140mm wide composite decking gives a deck clean, generous proportions and efficient coverage — a popular board width that lays quickly and looks smart underfoot. It's available across three of our ranges: Rustic, Premium and Supreme, so you can choose your finish and specification while keeping that same 140mm board width throughout.
Whichever range you choose, every board resists fading, rot, warping and splinters, with none of the oiling, staining or sanding real timber demands — just a low-maintenance deck that still looks like new in ten years.
140mm Premium Boards
A step up from our Core boards — higher specification with a smooth, contemporary finish. Available in antique, dark grey, light grey, teak and walnut.
Only £24.00 per board
- Warranty: 25 years
- Board size: 140mm × 3600mm
- Thickness: 23mm
- Capped: Yes — strengthening polymer sleeve
- Reversible: No
140mm Rustic Boards
Our deeply textured, natural old-aged finish for a more organic look. Available in light grey, teak, coffee and stone — stone is exclusive to the rustic range
Only £26.64 per board
- Warranty: 15 years
- Board size: 140mm × 3600mm
- Thickness: 25mm
- Capped: No
- Reversible: No
- Colours: Coffee, Light Grey, Stone, Teak
140mm Supreme Boards
Our top-tier board: a robust structure and a classy matte finish, wrapped in an enhanced polymer sleeve and guaranteed for 30 years.
- Warranty: 30 years
- Board size: 140mm × 3600mm
- Thickness: 20mm
- Capped: Yes — enhanced polymer sleeve
- Reversible: No
- Solid board: Yes
- Colours: Antique, Dark Grey, Light Grey, Teak, Walnut
Your quick buying guide
Grain and finish. All our boards carry a realistic wood grain. If you want that deep, woodgrain finish, go Core, or the look of naturally aged timber, go Rustic; for a contemporary matte finish, go Supreme.
Capped vs uncapped. A capped board (Premium and Supreme) has a protective polymer sleeve that improves stain, scratch and fade resistance. Uncapped boards (Core and Rustic) still resist the weather far better than timber and come in at a lower price.
Reversible boards. Only Core is reversible, giving you two surface options per board. Pick one or mix your finish.
Finish the job properly. Every range has a colour-matched accessories range with fascia, trims, screws and clips so edges and fixings disappear into the deck.
FAQs
How wide is a 140mm decking board?
Exactly 140mm across the face.
Is a wider board better?
Is largely down to preference and look. A 140mm board covers ground efficiently, needs fewer clips than a narrower board and leaves fewer visible joins for a smoother finish — many people prefer the cleaner, more contemporary proportions. You can also opt for an even wider board (Core 146mm), and they actually cost less.
Which ranges come in 140mm?
Our Rustic, Premium and Supreme ranges are all 140mm wide, so you can pick your finish and specification without changing the board width.
Do you offer decking in other widths?
Our Core range comes in 146mm
Why composite over timber?
Low maintenance — no sanding, oiling or annual treatment. An occasional wash keeps it looking new.
Durable — resists rot, warping and water damage that shorten the life of timber decks.
Fade resistant — Minimal fading, whilst holding its colour season after season.
Eco-conscious — made from recycled wood and plastic fibres, reducing landfill and deforestation.
What length is your 140mm width boards?
All 140mm width boards come in 3.6m lengths across the premium, rustic and supreme decking ranges.