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Specialists in premium composite products

Composite Prime® are the UK’s leading composite decking brand. Wood-plastic composite is the most durable and low maintenance alternative to traditional wooden decking. Wave goodbye to annual timber treating and make way for our sustainable composite decking.

There are various advantages of composite decking vs traditional wood decking, making our decking the most perfect solution for patios, terraces, balconies and gardens. Not only this, but our products are a cost-effective and practical choice for schools, hotels, restaurants and offices.

We are the best in the industry. Our composite decking boards are made with high quality ingredients and the perfect blend of durability and design. We are confident in our products as they are all 3rd party independently tested and that is why we offer up to a 25-year warranty.

all of our composite decking products are designed and developed exclusively in the heart of Yorkshire, England.

our composite decking products are long lasting, low maintenance, sustainable, ethical and environmentally friendly, recycled plastics and FSC® 100% certified wood flour.

our composite decking contains the equivalent of 3,000 recycled plastic bottle caps per square metre.


about Composite Prime®

Established in 2014 in the heart of Yorkshire, Composite Prime® is the fastest growing composite brand in the UK. Bringing backgrounds and experience in both timber and plastic, company directors Domenic and Charles created the perfect partnership for developing Composite Prime® products.


composite decking installation

For each of our products, we have developed a comprehensive installation guide to ensure that the product is constructed correctly. On our resources page, you will find our HD Deck® installation video as well as the YouTube series from Robin Clevett on “How to fit composite decking”. If you’ve ever got any questions or need advice, you can contact a member of our team and ask us anything about the Composite Prime® product range.

free composite decking samples

Choosing the right composite decking can be a daunting task and will of course need you to decide on a colour. You might be thinking, will the colours match your furniture? Will the board look good against your house? You don’t have to worry as we provide FREE samples of all our composite decking ranges. You can request a sample pack and decide which colour is right for your project.


frequently asked questions

What is composite decking?+

Wood plastic composite (WPC) decking is a blend of recycled wood and plastic that would have otherwise ended up in landfill. Composite decking offers exceptional durability, resilience and performance that you can’t get from pure wood. It doesn’t split, chip, warp or rot – perfect for withstanding the elements! Our composite decking is barefoot safe, won’t splinter and is slip resistant unlike wet wood.

How long will composite decking last?+

Composite decking is designed to be strong and durable. As a low-maintenance alternative to timber, you can expect it to last for many years with minimal upkeep. All our capped composite decking products come with a 25 Year Limited Warranty for residential applications and 10 years for commercial applications.

What’s the difference between uncapped and capped composite decking?+

Our contemporary composite deck boards (HD Deck® XS, HD Deck® 150 and HD Deck® 3D), which all contain the grooved design, are made from a single extrusion of hard wood flour and recycled HDPE plastic composite – making them a long-life alternative to timber decking. Our wood grain effect composite decking (HD Deck® Dual and HD Deck® Pro), is also manufactured from hard wood flour and recycled HDPE plastic, but has a tough polymer shell applied to its exterior. This encapsulates the product and provides a defensive barrier to offer improved performance against the elements. This product has all the great features of traditional composite decking, with the added benefits of improved stain, mould and fade resistance.

Does composite decking fade?+

Our composite decking products contain hard wood flour and recycled HDPE plastic and this minimises the natural UV fading effect. This being said, you should expect some fading during the first 6-12 months while the colour pigments stabilise, before weathering naturally to a similar colour pallet. Whilst every effort is made to match our colours from batch to batch we recommend fitting HD Deck® from the same pack. Capped products such as HD Deck Dual® and HD Deck® Pro have a higher degree of UV stability to uncapped products such as HD Deck XS®, HD Deck® 150 and HD Deck® 3D.

Where can I purchase Composite Prime products?+

Composite Prime products are only available to purchase through our official stockists and resellers. We are the manufacturers and do not sell directly to consumers or trade. Many of our stockists in the UK have retail websites that allow you to buy our products online. Please use our stockist locator to find your closest stockist.

Can you recommend an installer for your products?+

Composite Prime’s Prime Accredited Installers are a network of installers that we trust to bring your decking plans to life. Our network of installers have been chosen because of their high quality of work and professionalism, but they are all third party’s and thus you should do your due diligence before entering into any contract with them.

Is your composite decking slip resistant?+

All of our composite decking products are tested for slipping in wet and dry conditions to EN 15534-1:2014 Section 6.4.2 and all of our results including in wet conditions achieve a Low Slip potential grade. For more on our results please see here.

Does your composite decking come with a warranty?+

Yes, Composite Prime® HD Deck® is manufactured with the highest quality materials and processes available. All of our products are covered by a limited manufacturers warranty and are there to cover against product failure and manufacturing defects to give you peace of mind. For more information please see our warranty documents here.

How much composite decking do I need?+

We would ask that in the first instance you contact one of our Pro Installers and they can assist you with this, alternatively you can use our 3D deck builder, Prime Design, to visualise and plan your project but also create a bill of materials.

Why do you recommend 300mm centres?+

This is the joist spacing that we test the board to. It’s very common for composite decking to be installed at closer centres than of timber. Please remember to follow the fitting instructions when installing your deck, you can find all our fitting guides in the resources section.

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