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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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  • Trex-TikiTorchLifestyle1-sort2.jpg.jpeg Trex_ColourTikiTorch.jpg.jpeg

    Trex Composite Decking Transcend Grooved Tiki Torch 25 x 140 x 4880mm

    Trex Transcend Grooved Board is a high-quality decking that is durable and attractive. Tiki Torch is a warm colour with hardwood streaks. Other shades are also available. Please note: Timber and stone are natural materials, and as such, variation in...
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    ArborDeck Timber Decking UC3u Treated Smooth or Grooved Reversible 38 x 125 x 5400mm (5") (Finished Size 33x120mm)

    The Arbordeck Treated Timber Deck is manufactured from high quality imported Scandinavian softwood, with a high-pressure green treatment providing longer life. Upgrade your outdoor space with our Pattern‑B style redwood timber decking, crafted to...
  • rockyharbour%20square%20board.jpg.jpeg Trex_ColourRockyHarbor.jpg.jpeg

    Trex Composite Decking Enhance Square Edge Rocky Harbour 25 x 140 x 3660mm

    The Square Composite Decking in Rocky Harbour is part of the Trex Enhance Naturals range that offers the perfect combination of affordability with a decking that is made from materials that are 95% recycled, whilst still having the appearance of...
  • Cladco%20VersaDecking_Platinum_Sandstone%20copy%202.jpg.jpeg VersaDeck%20Sandstone%202.jpg.jpeg

    VersaDeck Composite Decking Board Platinum or Sandstone Reversible 23 x 143 x 3600mm

    VersaDeck reversible composite decking board in Platinum or Sandstone offers a durable, low maintenance deck. Buy online today.
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    Forest Garden Ridged Deck Tile 500 x 500 x 32mm (4 Pack)

    Ideal decking tile for creating a beautiful decked area in your garden quickly and easily. The Forest Ridged Deck Tile is a square lightweight tile, at 50 x 50cm it is ideal for creating a beautiful decked area in your garden on which to entertain or...
  • Piranha%20Terrafuzion%20Graphite%20Edging%20Board%20140x23x3600mm%20%28PIRFUEGS%29.png

    Piranha Terrafuzion Composite Decking Edging Board Graphite 120 x 10 x 3600mm

    Piranha Terrafuzion composite decking edging board in Graphite 120 x 10 x 3600mm. Buy online today.
  • Piranha%20Hunter%20Anthracite%20Fascia%20Board%20150x10x3600mm%20%28PIRHUEFBBL%29.png

    Talasey Hunter Composite Decking Fascia Boards Anthracite 150 x 10 x 3600mm

    Talasey Hunter composite decking fascia board in Anthracite 150 x 10 x 3600mm for a neat deck finish. Buy online today.
  • Piranha%20Terrafuzion%20Espresso%20Fascia%20Board%20120x10x3600mm%20%28PIRFUEFBES%29.png

    Talasey Terrafuzion Composite Decking Fascia Board Espresso 120 x 10 x 3600mm

    Talasey Terrafuzion composite decking fascia board in Espresso 120 x 10 x 3600mm for a professional finish. Buy online today.
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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...
  • Piranha%20Hunter%20Mid%20Grey%20Edging%20136x25x3600mm%20%28PIRHUEGY%29.png

    Talasey Hunter Composite Decking Edging Boards Mid Grey 136 x 25 x 3600mm

    Talasey Hunter composite decking edging board in Mid Grey 136 x 25 x 3600mm for a clean deck finish. Buy online today.
  • enhance_-fascia-clam-shell.jpg.jpeg Trex_ColourClamShell.jpg.jpeg

    Trex Composite Decking Enhance Fascia Clam Shell 14 x 184 x 3660mm

    The Composite Decking Fascia in Clam Shell is part of the Trex Enhance Basics range and is designed to complement the Clam Shell composite decking boards, offering a neat finish around the edge. The fascia is made from 95% recycled materials but has a...
  • rockyharbour%20square%20board.jpg.jpeg Trex_ColourRockyHarbor.jpg.jpeg

    Trex Composite Decking Enhance Square Edge Rocky Harbour 25 x 140 x 4880mm

    The Square Composite Decking in Rocky Harbour is part of the Trex Enhance Naturals range which is a mid-range decking choice that is affordable, low maintenance and has a realistic woodgrain effect. Manufactured from 95% recycled materials, the composite...
  • DKG00000200-01.jpg.jpeg Trex-TikiTorch.jpg.jpeg

    Trex Composite Decking Transcend Fascia Tiki Torch 14 x 184 x 3660mm

    Trex Fascia Boards are the perfect way to finish a decked area, as they can neatly cover the sides of your deck with the Trex Fascia Boards, which are available in the matching colour and style of every Trex decking line. They are also now presented in a...
  • Teak_capped.webp decking%20built%20to%20last%20asset.jpg.jpeg

    BuildDeck Regent Composite Step Board Teak 22 x 140 x 3600mm

    Capped decking step boards with bull-nose edging provide a polished, functional finish for Regent Lite composite decking, creating smooth, safe edges for steps and perimeters while enhancing the overall elegance of outdoor spaces. Available in four...
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    Forest Garden Value Decking Board PEFC 19 x 120 x 2400mm (5") (10 Pack)

    Forest Garden value decking boards 19 x 120 x 2400mm PEFC certified supplied in packs of 10. Buy online today.
  • Piranha%20Terrafuzion%20Mocha%20Edging%20Board%20140x23x3600mm%20%28PIRFUEME%29.png

    Piranha Terrafuzion Composite Decking Edging Board Mocha 120 x 10 x 3600mm

    Piranha Terrafuzion composite decking edging board in Mocha 120 x 10 x 3600mm. Buy online today.
  • Piranha%20Terrafuzion%20Island%20Mist%20Fascia%20Board%20120x10x3600mm%20%28PIRFUEFBIS%29.png

    Piranha Terrafuzion Composite Decking Fascia Board Island Mist 120 x 10 x 3600mm

    Piranha Terrafuzion composite decking fascia board in Island Mist 120 x 10 x 3600mm. Buy online today.
  • Piranha%20Graphite%20with%20Slate%20Edging%20Page.jpg.jpeg decking%20built%20to%20last%20asset.jpg.jpeg

    Piranha Terrafuzion Reversible Composite Decking Board Slate & Graphite 140 x 23 x 3600mm

    Piranha Terrafuzion reversible composite decking board in Slate and Graphite 140 x 23 x 3600mm. Buy online today.
  • Special Offer
    Hunter%20Anthracite%20Grooved%20.png Hunter%20-%20Anthracite%20_%2027%20Super%20Luxury.jpg.jpeg
    Special Offer

    Talasey Hunter Composite Decking Boards Anthracite 136 x 25 x 3600mm

    Talasey Hunter anthracite composite decking board provides a durable, low maintenance finish for garden decking. Buy online or Click & Collect today.
  • square%20edge%20lava%20rock.jpg.jpeg Trex_ColourLavaRock.jpg.jpeg

    Trex Composite Decking Transcend Square Edge Lava Rock 25 x 140 x 4880mm

    Square Boards from Trex Transcend are a strong decking board that are similar to timber and are fitted using deck screws. Available in Lava Rock; a red-black shade with hardwood streaks. Please note: Timber and stone are natural materials, and as such,...
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    Accoya A1 Grade Rough Sawn Timber Kiln Dried FSC 25 x 125mm (5")

    £137.88 - £396.41 per piece (Ex VAT)
    £165.46 - £475.69 per piece (Inc VAT)
    High Performance Accoya is an exceptional high-performance, eco-friendly wood known for its remarkable durability and stability. Through its non-toxic acetylation treatment, Accoya outperforms even the best tropical hardwoods, offering long-lasting...
    £137.88 - £396.41 per piece (Ex VAT)
    £165.46 - £475.69 per piece (Inc VAT)
  • Accoya%20-%20Photo%20produit%20%288%29.png 191128_accsys_2922.jpg.jpeg

    Accoya A1 Grade Rough Sawn Timber Kiln Dried FSC 25 x 150mm (6")

    £128.59 - £369.70 per piece (Ex VAT)
    £154.31 - £443.64 per piece (Inc VAT)
    High Performance Accoya is an exceptional high-performance, eco-friendly wood known for its remarkable durability and stability. Through its non-toxic acetylation treatment, Accoya outperforms even the best tropical hardwoods, offering long-lasting...
    £128.59 - £369.70 per piece (Ex VAT)
    £154.31 - £443.64 per piece (Inc VAT)
  • Accoya%20-%20Photo%20produit%20%288%29.png 191128_accsys_2922.jpg.jpeg

    Accoya A1 Grade Rough Sawn Timber Kiln Dried FSC 38 x 200mm (8")

    £137.88 - £396.41 per piece (Ex VAT)
    £165.46 - £475.69 per piece (Inc VAT)
    High Performance Accoya is an exceptional high-performance, eco-friendly wood known for its remarkable durability and stability. Through its non-toxic acetylation treatment, Accoya outperforms even the best tropical hardwoods, offering long-lasting...
    £137.88 - £396.41 per piece (Ex VAT)
    £165.46 - £475.69 per piece (Inc VAT)
  • Accoya%20-%20Photo%20produit%20%288%29.png 191128_accsys_2922.jpg.jpeg

    Accoya A1 Grade Rough Sawn Timber Kiln Dried FSC 50 x 100mm (2")

    £128.59 - £369.70 per piece (Ex VAT)
    £154.31 - £443.64 per piece (Inc VAT)
    High Performance Accoya is an exceptional high-performance, eco-friendly wood known for its remarkable durability and stability. Through its non-toxic acetylation treatment, Accoya outperforms even the best tropical hardwoods, offering long-lasting...
    £128.59 - £369.70 per piece (Ex VAT)
    £154.31 - £443.64 per piece (Inc VAT)

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