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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 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...
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    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,...
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    ArborDeck Timber Decking UC3u Treated Grooved or Reeded Reversible 32 x 150 x 4800mm (6") (Finished Size 27x145mm)

    The Arbordeck Treated Timber Deck is manufactured from high quality imported softwood, with a high-pressure treatment providing longer life. Crafted from premium Redwood, these decking boards promise exceptional strength and durability, ensuring...
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    ArborDeck Timber Decking UC3u Treated Smooth or Grooved Reversible 38 x 125 x 4800mm (5") (Finished Size 33x120mm)

    The Arbordeck Treated Timber Deck is manufactured from high quality imported softwood, with a high-pressure treatment providing longer life. Crafted from premium Redwood, these decking boards promise exceptional strength and durability, ensuring...
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    Timber Decking UC3u Treated Smooth or Grooved Reversible 32 x 125 x 3600mm (5") (Finished Size 27x118mm)

    The Arbordeck Treated Timber Deck is manufactured from high quality imported softwood, with a high-pressure treatment providing longer life. Crafted from premium Redwood, these decking boards promise exceptional strength and durability, ensuring...
  • Special Offer
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    Special Offer

    ArborDeck Timber Decking UC3u Treated Smooth or Grooved Reversible 32 x 125 x 5100mm (5") (Finished Size 27x118mm)

    The Arbordeck Treated Timber Deck is manufactured from high quality imported softwood, with a high-pressure treatment providing longer life. Crafted from premium Redwood, these decking boards promise exceptional strength and durability, ensuring...
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    Talasey Terrafuzion Reversible Composite Decking Board Sandstone & Island Mist 140 x 23 x 3600mm

    Sandstone & Island Mist is perfect for homeowners seeking a light and contemporary decked area. Featuring two shades of light grey, it effortlessly complements a modern colour palette while maintaining a bright and airy aesthetic. Please note: Timber and...
  • Special Offer
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    Special Offer

    Cheshire Mouldings Pine Decking Stair UC3 3 Tread String Treated 872 x 250 x 48mm (DS3)

    The 3 Tread Decking String is made using treated Pine and allows you to create steps to various levels of decking with great ease. 5 Tread Decking Strings also available. Pine is a durable timber, which is easy to work with and looks great outside...
  • Special Offer
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    Special Offer

    ArborDeck Timber Decking UC3u Treated Grooved or Reeded Reversible 38 x 125 x 4500mm (5") (Finished Size 33x120mm)

    The Arbordeck Treated Timber Deck is manufactured from high quality imported softwood, with a high-pressure treatment providing longer life. Crafted from premium Redwood, these decking boards promise exceptional strength and durability, ensuring...
  • 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...
  • Special Offer
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    Special Offer

    Timber Decking UC3u Treated Grooved or Reeded Reversible 32 x 125 x 3600mm (5") (Finished Size 27x118mm)

    The Arbordeck Treated Timber Deck is manufactured from high quality imported softwood, with a high-pressure treatment providing longer life. Crafted from premium Redwood, these decking boards promise exceptional strength and durability, ensuring...
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    ArborDeck Timber Decking & Rail UC3u Treated Smooth 38 x 150 x 4800mm (6") (Finished Size 32x145mm)

    The Arbordeck Treated Timber Deck is manufactured from high quality imported softwood, with a high-pressure treatment providing longer life. Crafted from premium Redwood, these decking boards promise exceptional strength and durability, ensuring...
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    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...
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    Hardwood Timber Decking Grooved or Reeded Reversible 26 x 150mm (6") (Finished Size 21x145mm)

    Hardwood decking provides a naturally durable deck, with a warm colour that is rich and vibrant. It can be easily maintained with the application of deck oil, or allowed to weather naturally over time to an attractive shade. Build your deck alongside UC4...
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    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...
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    ArborDeck Timber Decking & Rail UC3u Treated Smooth 38 x 150 x 3600mm (6") (Finished Size 32x145mm)

    The Arbordeck Treated Timber Deck is manufactured from high quality imported softwood, with a high-pressure treatment providing longer life. Crafted from premium Redwood, these decking boards promise exceptional strength and durability, ensuring...
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    ArborDeck Timber Decking UC3u Treated Grooved or Reeded Reversible 32 x 150 x 2400mm (6") (Finished Size 27x145mm)

    The Arbordeck Treated Timber Deck is manufactured from high quality imported softwood, with a high-pressure treatment providing longer life. Crafted from premium Redwood, these decking boards promise exceptional strength and durability, ensuring...
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    ArborDeck Timber Decking UC3u Treated Grooved or Reeded Reversible 32 x 150 x 2700mm (6") (Finished Size 27x145mm)

    The Arbordeck Treated Timber Deck is manufactured from high quality imported softwood, with a high-pressure treatment providing longer life. Crafted from premium Redwood, these decking boards promise exceptional strength and durability, ensuring...
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    ArborDeck Timber Decking UC3u Treated Grooved or Reeded Reversible 32 x 150 x 3000mm (6") (Finished Size 27x145mm)

    The Arbordeck Treated Timber Deck is manufactured from high quality imported softwood, with a high-pressure treatment providing longer life. Crafted from premium Redwood, these decking boards promise exceptional strength and durability, ensuring...
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    ArborDeck Timber Decking UC3u Treated Grooved or Reeded Reversible 32 x 150 x 3300mm (6") (Finished Size 27x145mm)

    The Arbordeck Treated Timber Deck is manufactured from high quality imported softwood, with a high-pressure treatment providing longer life. Crafted from premium Redwood, these decking boards promise exceptional strength and durability, ensuring...
  • Treated%20Grooved%20_%20Reeded%20Reversible%20Board%20150mm.jpg.jpeg 33IC4171624-03.jpg.jpeg

    ArborDeck Timber Decking UC3u Treated Grooved or Reeded Reversible 32 x 150 x 3600mm (6") (Finished Size 27x145mm)

    The Arbordeck Treated Timber Deck is manufactured from high quality imported softwood, with a high-pressure treatment providing longer life. Crafted from premium Redwood, these decking boards promise exceptional strength and durability, ensuring...
  • Treated%20Grooved%20_%20Reeded%20Reversible%20Board%20150mm.jpg.jpeg 33IC4171624-03.jpg.jpeg

    ArborDeck Timber Decking UC3u Treated Grooved or Reeded Reversible 32 x 150 x 3900mm (6") (Finished Size 27x145mm)

    The Arbordeck Treated Timber Deck is manufactured from high quality imported softwood, with a high-pressure treatment providing longer life. Crafted from premium Redwood, these decking boards promise exceptional strength and durability, ensuring...
  • Treated%20Grooved%20_%20Reeded%20Reversible%20Board%20150mm.jpg.jpeg 33IC4171624-03.jpg.jpeg

    ArborDeck Timber Decking UC3u Treated Grooved or Reeded Reversible 32 x 150 x 4200mm (6") (Finished Size 27x145mm)

    The Arbordeck Treated Timber Deck is manufactured from high quality imported softwood, with a high-pressure treatment providing longer life. Crafted from premium Redwood, these decking boards promise exceptional strength and durability, ensuring...
  • Treated%20Grooved%20_%20Reeded%20Reversible%20Board%20150mm.jpg.jpeg 33IC4171624-03.jpg.jpeg

    ArborDeck Timber Decking UC3u Treated Grooved or Reeded Reversible 32 x 150 x 4500mm (6") (Finished Size 27x145mm)

    The Arbordeck Treated Timber Deck is manufactured from high quality imported softwood, with a high-pressure treatment providing longer life. Crafted from premium Redwood, these decking boards promise exceptional strength and durability, ensuring...

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