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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.

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  • Arbordeck-1.8m-Treated-Utility-Rail-32-x-66mm.jpg.jpeg

    ArborDeck Timber Balustrade Treated Utility Rail 38 x 66 x 3600mm

    Manufactured from high quality imported softwood, high pressure green treatment providing longer life.
  • patrice-cap-600x400.jpg.jpeg TimberHeart.jpg.jpeg

    ArborDeck Timber Balustrade Treated Patrice Cap 110 x 110mm

    Designed to go on top of a newel, the Patrice Cap adds an attractive finish to your deck railing system. Please note: Timber and stone are natural materials, and as such, variation in colour, texture, and natural markings is to be expected. We strive to...
  • Treated-1.2m-Stop-Chamfered-Newel-90-x-90mm.jpg.jpeg

    ArborDeck Timber Balustrade Treated Stop Chamfered Newel 90 x 90 x 1200mm

    This product can be used as both a rail or a deck board. Manufactured from high quality imported softwood, high pressure green treatment providing longer life. Please note: Timber and stone are natural materials, and as such, variation in colour,...
  • Arbordeck-1.25m-Treated-Turned-Newel-90-x-90mm.jpg.jpeg

    ArborDeck Timber Balustrade Treated Turned Decking Newel 90 x 90 x 1.25m

    The Arbordeck Softwood Decking Newel posts are pressure treated and kiln dried to ensure longevity and quality of product. Because they are incredibly durable, they can provide a 15 year service life when used above DPC and in accordance with approved...
  • square-newel.jpg.jpeg

    ArborDeck Timber Balustrade Treated Square Decking Newel 90 x 90 x 1200mm

    Used as a support for your decking rail, the Square Newel has a simple but attractive flat top creating an elegant finish for your decking system. Please note: Timber and stone are natural materials, and as such, variation in colour, texture, and natural...
  • ball%20cap.jpg.jpeg

    ArborDeck Balustrade Ball Cap Treated Timber UC3u

    Wooden tops for fence posts in decorative designs are a great way of adding the perfect finishing touch to your fence. This finial has been shaped into the ball and collar style, which is not only traditional, but incredibly pleasing to the eye as this...

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.

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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