15% off Timber & Sheet Materials and Building Materials & Drainage Code: BLACKFRIDAY /

Decking Boards

Decking Boards are a simple way of transforming your outdoor space into something amazing and are available in a variety of sizes in softwood and hardwood, plus thermally treated options are available.

Welcome to Howarth Online

Want to see what is available in your local branch?

Please enter your postcode below.

Don’t want to give a postcode? Allow us to auto-detect your location

Have an account already? Login here

? Why do you want to know where I am?

We sell thousands of different products which means our stock levels around the country vary.

If you share your location with us we can ensure that the stock levels you see on the site are accurate.

We will never share your location with anyone.

If you proceed without sharing your location with us, we can’t show you accurate stock levels.

Share your location with us
Loading...

We can’t show you accurate stock levels because you haven’t shared your delivery location with us. Please share your location with us now.

Don’t want to give a postcode? Allow us to auto-detect your location

Product Loading

Product code loading

Product Loading

Product code loading

Product Loading

Product code loading

Product Loading

Product code loading

Product Loading

Product code loading

Product Loading

Product code loading

Product Loading

Product code loading

Product Loading

Product code loading

Product Loading

Product code loading

Product Loading

Product code loading

Product Loading

Product code loading

Product Loading

Product code loading

Product Loading

Product code loading

Product Loading

Product code loading

Product Loading

Product code loading

Product Loading

Product code loading


Decking Boards

Decking Boards are a simple way of transforming your outdoor space into something amazing and are available in a variety of sizes in softwood and hardwood, plus thermally treated options are available. 

Timber Decking Board FAQ's

Do you have a question about timber decking? We have compiled a collection of frequently asked questions to help you find the answers. If your question is not answered here, please contact us and we will be happy to assist you.

How much are deck boards?

A garden deck project will typically cost between £1,000 and £2,000. The cost will vary depending on the type of materials you select, the size of the decking and the location. The four most popular decking boards include softwood, hardwood, composite and antislip timber. To view our decking board prices, click here

How wide are deck boards?

The most common decking widths are 90mm to 150mm, with 120mm and 140mm in between. The width option you choose for your project can make a big impact in the ultimate effect, so get creative to achieve the best look for your decking while staying within your budget.

Wider Deck Boards

Wider decking boards are the most suitable for decking a larger area. If you have a long, thin decking, putting wide boards at right angles to the long side of your decking can give the illusion of a larger decking.

Narrow Deck Boards

Opting for narrow decking boards in a smaller area can create an eye-catching feeling, you will require more decks to cover a smaller space and the eye will perceive the area to be larger than it is merely because of the amount of decking boards

How long does deck last?

You can anticipate your timber decking to last at least 15 years and up to 30 years if you use suitable materials and follow installation and maintenance guidance. When it comes to decking maintenance, the most important things to remember are to use properly treated deck boards, use appropriate deck fasteners, and keep your deck clean. Install your timer deck appropriately and it will last a long time.

Softwood is always redwood and are treated to UC3u and dedicated for use above ground.

What gap should you leave between deck boards?

Leave 5mm gaps between deck planks while installing them. A gap at the end of the boards must be considered, the recommended gap is around 4.5mm to 6mm. This gap will allow the deck to breathe, provide drainage, and make cleaning easier.  

You must leave gaps between your deck boards so they can compress and expand. They can cause friction if they are too close to each other, which can harm the boards. It can also cause the boards to bend, cup, or warp. Leaving spaces between the gaps can help with drainage, reducing the likelihood of water gathering on your patio. You may also limit the risk of moisture damage, mould, and mildew growth by having good drainage.

Timber Decking TOP TIP-

The use of a CAMO Marksman Edge allows you to insert hidden deck fasteners discretely into the edge of your board, without any gaps between each plank. This means that the tool can be used on any size of decking. As such, this is an option for use on exceptionally wide boards, however, please note that there won’t be a spacer to guide the user, therefore if you would prefer the use of a spacer, we recommend the CAMO Wide Board Marksman Pro

What is the difference between Hardwood and Softwood?  

Hardwoods are so-called, as they are sourced from trees that grow slowly, meaning the wood has more time to mature. In comparison, Softwoods are sourced from fast-growing trees, but this doesn’t mean softwoods can’t be tough too.  

Hardwood decking is often a popular choice because hardwoods are typically more resilient against rot and degeneration. However, softwood decking boards are also a great choice with a little extra maintenance.  

When to use Timber Decking Boards  

Concrete. Decking Boards are a great solution for covering concrete that has been damaged and become unsightly over a period and, decking boards are a great deal nicer.  

Problem Solving. If your garden if renowned for being boggy or generally damp, it’s easy to not want to spend time in it because garden furniture is likely to sink into it. However, decking can help raise your outdoor space above it.   

The same goes if you have a particularly uneven garden perhaps because you live on a hill. Decking can be used to create an area that is level for tables and chairs.  

Complement. A fantastic finish for an above ground swimming pool or water feature, which can handle being beside water without becoming damaged.  

Difference Between Smooth and Grooved Deck Boards  

A lot of companies will tell you that Grooved Deck Boards are the better option because they offer more slip resistance. However, this is untrue: Grooved Boards offer no advantage – in terms of slippage – over Smooth ones.  

Nevertheless, Grooved Boards are an ideal option if you are placing them by a pool or water feature, as the grooves allow water to run-off quickly. However, it is important to note that they are only effective for this purpose if they are used in shorter lengths. If you intend/need to use longer decking lengths, Smooth Boards are a better option.  

At Howarth Timber & Building Supplies we have a wide range of decking boards, as well as a variety of C16 and C24 timbers that can be used as part of your project. We also offer a wide selection of composite decking, whilst our Garden & Landscaping range will help you to complete your garden project. 

Are you unsure how to build a deck?

We have the ultimate guide to help you, How to build a deck.

How to build a raised deck

A step by step guide on how to build a raised deck.

Or you can get in touch with your nearest branch, who will be happy to answer questions. 

Free Delivery Free delivery over £150 ex VAT is available on a wide range of products that can be delivered directly to you from your local Howarth branch.
Free Click & Collect Collect your order at a time that suits you from just 1 hour of ordering.
Expert Advice Howarth has been helping build Britain for 180 years, offering you a service, expertise and knowledge that you can rely on.