Can 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!

What’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.

Will 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.

Is 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.

How 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.

Why are they cheaper compared to wood grain boards?

They use less materials, most composite decking costs and price is based on weight and quality of materials, as these design is no grooved, which reduces materials they cost slightly more but are more durable in after installation use.

4m Grooved Composite Decking Board

4m grey grooved composite decking | installed pattern view

Quality Grooved Composite Decking Board Sides

Type: Grooved
Material: Wood Fibre & HDPE Plastic

How Many 4m Grooved Boards Do You Need? Calculate Your Area

Colour:

Size:

4.0m

Calculate Your Area

Length (m):

Width (m):

Area

0 m²

Add 5% Cutting Margin (Wastage)

Required Boards:

Total

Quantity

Order Free Sample

Add to Cart

£ 23.74

Size

Colour

Clear

SKU: 10770 Categories: Decking, Home Choice Premier Tags: Longer Length Boards, Reversible Finish, Slip Resistant

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

Reversible and lightweight, each board offers a traditional wide-groove texture on one side and narrow classic grooves on the other—two looks in one. Slip-resistant, splinter-free, and low-maintenance, these boards come 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.

Reversible Traditional Grooved Design

Family-Safe Surface

4m Lengths

What Are The Key Benefits of 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 features a unique sanded surface. Unlike many other composite decks, scratches and minor stubborn stains can be effortlessly blended out, all without ever needing painting or staining.
Clean & Seamless Finish

Fewer boards and joins create a sophisticated, uninterrupted look, 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 in a longer length designed for faster installation. As part of our Home Choice collection, it offers all the recognised benefits of proven quality and great value, in a board that helps you save 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 wide range of lengths to suit any garden, big or small. The reason is simple: we listen.

Download PDF

Download PDF

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 enjoy a much faster installation time!
2What’s the difference between the two sides of the board?

One side features a wide-groove texture for a modern, timber-inspired look. The reverse side has a traditional narrow-groove finish, offering 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, such as 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 using our 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 specifically for homeowners and residential use. Joist centres must be set at 300mm, and the thin-grooved side is recommended for the best performance on these boards.

As Seen In

Daily new magazine where Ultra Decking is mentioned

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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