null

Decking

Decking is one of the easiest ways to create a functional and stylish outdoor living space. Whether you’re building a raised platform, extending your patio, or upgrading your garden, our range of decking boards and composite decking offers durable, long-lasting solutions for every project.

At Howarth Timber, we supply both timber and composite decking suitable for trade professionals and DIY customers, with a wide choice of sizes, finishes, and styles.

Filters

Check local branch stock

  • LavaRockGrooved.jpg.jpeg Trex_ColourLavaRock.jpg.jpeg

    Trex Composite Decking Transcend Grooved Lava Rock 25 x 140 x 4880mm

    TREX Transcend decking's deep wood-grain pattern and luxurious colours give it a premium, timeless appearance that sets it apart from other composites. Rich, fade-resistant colours resemble the look of natural wood while requiring little maintenance. For...
  • spiced%20rum%20grooved%20decking.jpg.jpeg Trex_ColourSpicedRum.jpg.jpeg

    Trex Composite Decking Transcend Grooved Spiced Rum 25 x 140 x 3660mm

    The Grooved Board is part of the Trex Transcend range, and is designed to be durable and strong. Spiced Rum is a rich and warm tone that is great for adding an earthy touch to your garden. Please note: Timber and stone are natural materials, and as such,...
  • island%20mist%20grooved%20board.jpg.jpeg Trex_Trancend_IslandMist_01.jpg.jpeg

    Trex Composite Decking Transcend Grooved Island Mist 25 x 140 x 4880mm

    TREX Transcend decking's deep wood-grain pattern and luxurious colours give it a premium, timeless appearance that sets it apart from other composites. Rich, fade-resistant colours resemble the look of natural wood while requiring little maintenance...
  • island%20mist%20grooved%20board.jpg.jpeg decking%20built%20to%20last%20asset.jpg.jpeg

    Trex Composite Decking Transcend Grooved Island Mist 25 x 140 x 3660mm

    The Grooved Decking Boards are part of the Trex Transcend range of decking. Available in Island Mist, these decking boards are strong with a natural silver colouring. Please note: Timber and stone are natural materials, and as such, variation in colour,...

Transform your garden with quality decking

Timber decking boards

Timber decking provides a traditional, natural look and is a cost-effective choice for many garden projects. Our treated timber decking boards are designed to resist rot and decay, making them ideal for outdoor use.

Composite decking

Composite decking is a low-maintenance alternative that offers long-term durability. Resistant to weathering, fading, and warping, it’s perfect for modern outdoor spaces.

Decking kits & components

Complete your project with:

Choosing the right decking

When selecting decking, consider:

  • Material – Timber for a natural finish, composite for low maintenance
  • Durability – Treated timber lasts longer outdoors
  • Style – Grooved boards for grip, smooth for a modern look
  • Project type – Raised decks, patios, or garden seating areas

Complete your decking project

Make sure you have everything you need:

If you are working on a new project or renovating an existing outdoor space, pop into your local Howarth branch or browse our website. We also offer Click & Collect and Delivery options.

Shop by Type

Frequently Asked Questions

What timber do I need for decking?
Pressure-treated timber is one of the best options for decking frames because of its affordability.
How many deck boards do I need?
You'll need to calculate the area of the deck in m2 to figure out how many deck boards you'll need. To do this, multiply your deck's length by its width. For example: The length of your deck will be 5 metres, and the width will be 4 metres. 5 x 4 = 20, so the total area of your deck will be 20m2. Then you'll need to figure out how big a single board is. You must double the board's length by its width to achieve this. Finally, divide the deck's area by the area of the deck to figure how much decking you'll need to build your new deck.
What size wood for decking frame?
The most used joist sizes for decking are 2x6, 2x8, 2x10.
Do you need planning permission for decking?
You may need planning permission for decking if it covers more than fifty percent of your garden or is installed more than 30cm off the ground.
What is the best decking material?
Timber decking is affordable and traditional, while composite decking offers long-term durability with minimal maintenance.
How long does decking last?
Treated timber decking can last 10–15 years, while composite decking can last 20+ years.
Do I need treated timber for decking?
Yes, treated timber is recommended as it provides protection against moisture, rot, and insects.

How to guides

Decking - An Ultimate Guide

A helpful article with all the answers to the most frequently asked questions regarding both regular and composite decking in one place!

How to build a raised deck

Need help building a raised deck? We've got you covered with a full step by step guide.

Customer inspiration