Richard K
September 7, 2019
2:42 pm

What is Composite Decking made of? A Comprehensive Guide to Modern Decking Materials

Homeowners and builders have grown tired of the regular upkeep required for timber decking, so composite decking has become a modern, durable alternative. Timber decks, though visually appealing, need constant sanding, staining, and treatment to maintain their structural integrity. Without this maintenance, wood can warp, crack, rot, and deteriorate, making the deck unsafe and unattractive.

Composite decking solves these issues by combining the best qualities of both wood and plastic. It offers the natural appearance of timber with the durability and low maintenance of plastic.

In this guide, we’ll cover:

What composite decking is made of
How composite decking is made
The difference between capped and uncapped composite decking
The sustainability of composite decking
FAQs about composite decking materials

What is composite decking made of?

Composite decking is made from a mix of recycled wood fibres and plastic, along with bonding agents and colour additives. Typically, the wood comes from recycled sources like sawdust and wood chips, while the plastic is often recycled HDPE (High-Density Polyethylene) from discarded products such as milk jugs and food containers. Dino Decking’s composite deck boards contain a mix of 55% recycled wood and 40% recycled HDPE plastic along with 5% additives which include colour, bonding agent etc.

How composite decking is made

Step 1: The raw materials are collected

Composite decking begins with recycled wood fibres and plastic. At Dino Decking, for example, boards contain 55% recycled wood fibres and 40% recycled HDPE plastic, with the remaining 5% consisting of colourants, bonding agents, and other additives. The wood fibres are typically sourced from sustainable sources, such as sawmills, furniture makers, and floorboard factories. The plastic often comes from discarded products like milk jugs and detergent bottles.

Step 2: The materials are mixed

The wood fibres and plastic are heated and mixed together with the bonding agents and colour additives. This process creates a strong composite that retains the best qualities of both materials: the strength of wood and the water resistance of plastic.

Step 3: The mixture is moulded and formed

Once mixed, the composite material is extruded into the shape of decking boards. These boards are pressed, heated, and cooled to ensure a consistent, durable product.

Step 4: Capping is added for extra protection

Some composite decking, known as capped decking, features an additional layer of protection. A polymer sleeve, like our own Dino Shield™, is wrapped around the outer surface of the decking board. This layer increases the board’s resistance to stains, moisture, and UV rays, enhancing its durability and longevity. This process means that composite decking has several advantages over other decking types. These include additional durability, lower maintenance, better aesthetic appeal and being better for the environment. Read more on our advantages of composite decking guide.

What is the difference between capped and uncapped composite decking?

When choosing composite decking, one important factor to consider is whether to go for capped or uncapped boards. Both options have their benefits, but understanding the key differences can help you make an informed decision based on your needs.

Capped Composite Decking	Uncapped Composite Decking
Protection: Features a polymer shell or sleeve around the core of the board, providing extra protection against moisture, stains, and fading.	Protection: While still durable, uncapped boards lack this protective outer layer, making them slightly more vulnerable to stains and fading.
Best Use: Ideal for high-traffic areas or spaces exposed to the elements, as the cap maintains the board’s appearance over time.	Best Use: More affordable and suitable for lower-traffic areas or those less exposed to harsh weather conditions.
Durability: Enhanced resistance to wear and tear, stains, and UV exposure. Dino Decking’s capped boards come with the Dino Shield™ polymer sleeve, one of the thickest on the market.	Durability: Still durable but with less protection against fading or damage over time, making them more prone to wear and tear in extreme conditions.

At Dino Decking, our capped composite decking provides the perfect balance of beauty and durability. Thanks to the Dino Shield™ polymer sleeve, your deck benefits from enhanced protection against wear, moisture, and fading. This makes it an ideal choice for homeowners looking for a low-maintenance, long-lasting outdoor solution that stands up to the elements whilst maintaining a natural appearance.

Sustainability of composite decking

As sustainability becomes a priority for more consumers, composite decking is an eco-friendly option. Using recycled wood fibres and plastic in the production process reduces the demand for virgin materials and diverts waste from landfills. Additionally, composite decking has a much longer lifespan than timber, which means fewer resources are needed for replacement and repairs.

Interested in using our composite decking for your next garden project? Use our decking calculator to determine how much you will need.

What is Composite Decking FAQS

How long does composite decking last?

With proper care, composite decking can last for 25 to 30 years or more, significantly outlasting traditional timber decking. Read our full article on how long composite decking lasts for more details.

Is composite decking eco-friendly?

Yes, composite decking is made from recycled materials, making it an environmentally friendly choice. It also requires fewer resources for maintenance, reducing its overall impact on the environment.

Does composite decking fade?

High-quality composite decking, especially capped products, is designed to resist fading from UV exposure. While uncapped boards may fade slightly over time, capped boards maintain their appearance for years.

Is capped composite decking better?

Capped composite decking offers extra protection from the elements, making it a better option for high-traffic or exposed areas. Its polymer sleeve helps prevent stains, moisture damage, and fading.

Is composite decking better than real wood?

Composite decking is often considered better than real wood for several reasons. It requires far less maintenance—no sanding, staining, or sealing—and is highly resistant to rot, warping, and insect damage. While real wood offers a natural aesthetic, composite decking provides a similar visual appeal with enhanced durability and longevity, making it a more practical choice for long-term use. Additionally, composite decking is often made from recycled materials, making it an eco-friendly option. Read our full comparison of composite decking vs wood decking here.

Why choose Dino Decking?

Dino Decking offers a range of high-quality composite decking boards that are designed to last. We have a 10-year warranty for all our products. We also cannot be beaten on price, our direct-to-consumer model cuts out the middleman and allows you to get the best value for money.

Order a sample pack from us, or discover eco-friendly, durable composite decking today.

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