Composite Decking Cost

How Much is Composite Decking Installation?

What's the cost of composite decking installation?

You have a few options with composite decking, which vary widely in price. You can install uncapped hollow core composite decking, the cheapest but weakest option, with an average price of around £975 for 15m².

Capped hollow core composite decking is also available, which offers a better protected hollow core option, with an average price of around £1,275 for 15m².

Or, you can choose the stronger and more expensive uncapped solid core composite, costing around £1,350 for the same surface area. Lastly, you can select a capped solid core composite, costing £1,650 for 15m².

Composite decking is quickly becoming the most popular timber alternative for garden decking for various reasons, stemming from price to maintenance benefits.

PVC decking is also available, which has proven to be another excellent alternative to timber. However, depending on the quality of the product and how it is installed, PVC can be prone to flexing under pressure.

Composite Decking Prices

So, what is composite decking?

Composite decking is an artificial material made from wood and plastic fibres held together with a bonding agent. The materials are heated and bonded to ensure a sturdy core that is designed to be significantly more durable than standard timber decking.

And what's the difference between capped and uncapped?

Capped composite decking has a tough outer layer, or cap, added during the manufacturing process. This makes it more durable and resistant to scratches, stains, and general wear and tear.

The initial outlay for composite decking is a little more expensive than standard timber material, however, compared to the majority of softwood decking it tends to last much longer and with less maintenance required.

How Much Does Composite Decking Cost per m²?

Focusing solely on the material cost aspect of the job, the price varies considerably depending on the material you choose.

Uncapped hollow core composite decking will cost around £35 per m², with a standard 15m² area costing £525 for the materials.

Capped hollow core composite decking offers better protection, which is reflected in the higher cost, around £55 per m² and £825 for the materials for 15m².

Solid core composite is much stronger and is available in both capped and uncapped versions. The capping is an added protection to prevent mildew and mould from affecting the boards.

Solid core uncapped composite decking costs £60 per m², and solid core capped composite costs £80 per m².

PVC decking offers a mid-range alternative to solid core, but more expensive than uncapped hollow core, coming in at around £40 per m².

Composite Decking Prices per m²

Specialist composite decking installers may get discounts you cannot access as a one-off buyer.

Because of this, it's worth asking for a specific breakdown of quotes you get, to check whether getting the materials yourself is more affordable.

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How Much Does Composite Decking Installation Cost?

Contractors will typically charge around £200 to £250 per day for installing composite decking, which will cover the labour aspects of their workforce.

Most of the time will be spent preparing the area by digging and levelling out the ground, ready for the supports to be put in place for the decking.

Garden levelling can be a lengthy process, as any mistake at this point can impact the accuracy of the final job.

The cost per m² within the following table includes any additional overheads and handling costs.

Factors That Impact Composite Decking Costs

To help with your project's budget, let's go over the main factors that impact overall cost.

Decking Material

The biggest cost factor affecting composite decking installation is your choice of decking material.

On average when comparing a 15m² space, solid core composite costs £375 more than uncapped hollow core, while upgrading from uncapped to capped hollow core adds around £300 to the price of the same 15m² area.

Your choice of material comes down to your budget and performance preferences. If you're looking for the most cost-effective option, hollow core uncapped composite decking is your best choice.

Your Garden's Layout and Condition

Depending on the current state of your garden, your project costs can rise or fall.

You'll need to pay the cost of levelling your garden if it's currently uneven, so that your decking fitters have an even surface to lay your composite safely.

On top of this, you'll need to pay to remove the excess land. Garden waste removal costs around £200, depending on the volume.

If there are accessibility issues with where you want the decking installed (e.g., you have small corridor-like areas leading to the area you want to be decked), it'll take your decking fitters longer to reach the area, increasing your labour costs.

And if you've chosen a complicated layout for your decking, this is going to take longer, and potentially mean more materials, which will all be reflected in the cost.

Your Location

Your costs will change depending on your location in the UK.

Big cities like London have a higher cost of living, meaning the cost of trade jobs increases.

In London and surrounding south-east areas, you can expect to pay higher than the national average for trade jobs.

Composite Decking vs Wood Cost

On average in the UK, composite decking installed often costs around £90–£135 per m², whereas timber decking typically ranges from about £40–£108 per m² installed, meaning composite can be noticeably more expensive upfront but can save money over time through reduced maintenance.

Composite decking is initially more expensive than timber. However, the higher cost often provides a superior construction compared with wooden decking. This is due to composite being made with recycled plastics and wood fibers, making it durable, environmentally friendly, and not as slippery as the more budget-friendly alternative.

Wooden decking may be cheaper, but maintenance costs can soon add up in the long run. Requirements such as sealing, staining, and general repairs all help to prevent rot and warping due to general exposure to the elements. However, timber can become slippery underfoot and time-consuming to maintain to a high standard.

Overall, while installing composite has a higher initial cost, its low maintenance and long-term durability often make it a better investment compared with traditional timber.

What's Involved in Installing Composite Decking?

Here's an overview of what to expect when you hire a specialist to install your composite decking:

Before the Job Starts

• Site Survey and Measurements — Your installer will assess the site for your decking, considering the ground levels, surfaces, and drainage, and then measure the area to calculate the materials needed.
• Design and Specification — You'll agree the decking design and layout, and the materials to be used, the placements of any steps, whether you want balustrades and lighting, etc.
• Permissions and Checks — The specialist will discuss any planning or building regs considerations, and make a note of any utilities to be aware of during construction.
• Quote and Schedule — You should receive a finalised quote, and once you agree to go ahead, the work will be scheduled in and things like access and the storage of materials organised.

During the Job

• Preparation and Groundworks — The area where the decking will go will be cleared and levelled, with a slight fall to divert water away from the property. A sub-base, concrete footings, and weed-control membrane are laid, if necessary.
• Supports and the Sub-frame — The supports are positioned and levelled, before joists and noggins are installed to create the rigid sub-frame for the decking.
• Edge Detailing — The edges of the frame are set now so that all the trims will be flush once the decking is laid.
• Laying the Decking — The composite decking boards are laid and fitted to the desired design.
• Trims, Fascias, and Steps — The edge trims and fascias are all fitted, with any steps, balustrades, or handrails completed, as well.
• Optional Electrics — If you've specified them, any lighting such as LEDs for your decking will be installed and tested.
• Clean-Down — With the decking complete, the area is cleared of all materials and debris and cleaned down.

After the Job

• Final Checks and Snagging — Your installer will confirm everything is as it should be, with straight lines, neat edges, and secure fixings. Any snags identified are resolved.
• Waste Removal — Any remaining waste materials or old surfaces are tidied up and removed.
• Care and Paperwork — Your installer will provide you with any manufacturer registrations or warranties, as well as care and maintenance instructions to keep your new deck looking its best.

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Building Regulations & Planning Permission for a Composite Decking Installation

Garden decking and other raised platforms are permitted to be built in your garden without planning permission.

This is providing that:

• The garden decking is no higher than 30cm from the ground.
• The composite decking doesn't cover more than 50% of the garden.
• Your property isn't a listed building or part of a conservation area.

If you plan on creating something outside these boundaries, you'll need to speak to your local planning office to avoid fines or penalties.

Types of Composite Decking

There are three main types of composite decking to choose from:

Hollow Core Composite Decking Cost

Hollow core decking is the cheapest option on a budget.

It costs £35 per m².

Pros

• ✔ Cheapest composite decking material.
• ✔ Available in various styles, colours and designs.
• ✔ Easy to install.

Cons

• ✖ Not as strong as solid core decking.
• ✖ Can flex or break underfoot over the years.
• ✖ May look cheap.

Solid Core Composite Decking Cost

Solid core decking is more expensive than hollow core, but it's more long-lasting.

It costs £60 per m².

Pros

• ✔ Extremely strong and hard-wearing.
• ✔ Requires next to no maintenance.
• ✔ Resistant to mildew, mould, and algae.

Cons

• ✖ More expensive than hollow core composite.
• ✖ As it's solid core, it weighs more, making it harder to manoeuvre and install.
• ✖ Labour costs can be higher due to handling issues.

PVC Decking Cost

PVC composite decking is a mid-range option.

It costs £40 per m².

Pros

• ✔ Clean, shiny finish, available in various colours and designs.
• ✔ Low-maintenance, waterproof option.
• ✔ Extremely lightweight and easy to install.

Cons

• ✖ Shows scratches and scuffs quite easily.
• ✖ Surface can become slippery when wet.
• ✖ Can look a little cheap and flimsy.

Benefits of Composite Decking

Below we take a look at some of the benefits to installing composite decking:

• Durability - Composite decking is incredibly hard-wearing, and unlike timber it doesn't rot. It is also less prone to algae, although you may need to occassionally clear surface algae in damp or shaded areas.
• Long-lasting Unlike timber decking, which can splinter, warp, and degrade over time with regular use, composite decking tends to maintain its appearance over time, along with its integrity with minimal maintenance required.
• Low Maintenance - Unlike timber decking, which requires regular cleaning and treatments to maintain its appearance, composite requires significantly less maintenance, with a simple hose down to keep it clean.
• Sustainability - Composite materials are made up of a combination of wood and plastic. This means that old, recycled materials can be used to create a composite, and some old composite can be recycled and used again.
• Aesthetics - With composite decking, the aesthetic options are almost unlimited, with an array of colours and designs available to suit your décor and design choices.
• ValueComposite decking typically lasts 15–25 years, and high-quality, well-installed boards can last even longer, whereas timber can degrade faster and require costly repairs if not properly maintained. Although the initial cost is higher, composite decking offers roughly three times the value for money compared with timber, making it a smart long-term investment.

Checklist: Hiring Contractors to Install Composite Decking

Here are a few key things to consider when you start looking for a local composite decking installer:

• Do they have good reviews and testimonials? Look at the trader’s reviews and ratings from previous customers, check their online presence and MyJobQuote profile for customer feedback.
• Have you seen examples of their previous decking experience? Take a look at photographs, videos of recent projects or ask for a portfolio of past work and see if anything is similar to the look you're after.
• Are they fully insured? While the likes of Public Liability Insurance aren’t legally required, any reputable tradesmen will be covered in the event of accidental damage or personal injury.
• Have you received multiple quotes? It is always a good idea to gather quotes from at least 3 local tradesmen, which you can do via MyJobQuote, allowing you to compare prices and help gauge a realistic figure for the work required without any commitment.
• Have they provided an itemised breakdown? Always ask for a detailed breakdown of costs before going ahead with the work, so you know exactly what you're being charged for while avoiding any hidden extras without prior knowledge.
• Is there a contingency plan for any delays? Should the job overrun or be delayed due to unforeseen circumstances such as bad weather or material shortages, make sure this has been discussed and agreed in writing.
• Have you received confirmation in writing? When you have agreed to hire a tradesman for the job, ensure you have written confirmation of the work being completed and the prices match what’s been agreed.

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