What Is Composite Deck Made Of? A Simple Breakdown for Homeowners
If you’re planning an outdoor space and comparing decking options, one of the first questions that usually comes up is ‘what is composite decking made of?’. Understanding the materials behind composite decking makes it much easier to see why it performs differently from traditional timber decking and why it has become such a popular choice for modern homes.
In this guide, we break down what goes into a composite deck, how those materials work together, and how EnviroBuild’s two fantastic composite decking ranges are designed to deliver durability, consistency, and low maintenance.
Author Name
Chief Writer
Thu, 28 Jul 2026
What Is a Composite Deck Made Of?
A composite deck is made from a carefully engineered blend of materials rather than a single natural product. Composite decking boards are manufactured using recycled plastics, reclaimed wood fibres, and a combination of binding agents and performance additives that help stabilise the boards and enhance durability.
At EnviroBuild, composite decking is produced using up to 90% recycled materials and manufactured with 100% renewable energy.
This combination allows composite decking to deliver long-term performance while reducing the need for virgin raw materials. Unlike timber decking, which relies entirely on natural wood, composite decking is engineered to behave predictably outdoors.
The Role of Recycled Plastic in Composite Decking
Recycled plastic forms a key structural component of composite decking and plays a major role in how a composite deck performs over time. The plastic element helps reduce moisture absorption, which in turn protects the boards from rot, decay, and excessive movement caused by changing weather conditions.
This is why composite decking is often grouped under plastic decking, even though it still contains natural wood fibres. The plastic content improves longevity and makes composite decking particularly suitable for damp, shaded, or high-use areas where timber decking may deteriorate more quickly.
Why Wood Fibres Are Used in Composite Decking Boards
While plastic provides durability, reclaimed wood fibres are essential for achieving the natural look and feel many homeowners expect from decking. In composite decking boards, wood fibres help create a more authentic timber appearance and contribute to better grip underfoot compared to fully synthetic alternatives.
By blending wood fibres with recycled plastic, composite decking strikes a balance between visual warmth and engineered strength. This hybrid structure is what allows composite decking to look more natural than pure plastic decking while still outperforming traditional wood decking in demanding outdoor conditions.
How These Materials Work Together in a Composite Deck
The real strength of a composite deck lies in how its materials are combined during manufacturing. Plastic and wood fibres are bonded under controlled conditions to create boards that are dense, stable, and consistent in structure. This engineered process results in decking that resists splitting and splintering and maintains a uniform shape and finish across every board. Unlike natural wood, which varies from plank to plank, composite decking offers a predictable and consistent result, especially important for larger decking installations.
EnviroBuild's Explorer Range: Balanced Performance and Value
EnviroBuild’s Explorer range is designed as a versatile and accessible composite decking option that offers a strong balance between performance, appearance, and value. Explorer composite decking boards are made from up to 87% recycled materials, including FSC® 100% certified wood fibres, making them a more sustainable alternative to traditional timber decking.
The boards feature a reversible design, with a grooved surface on one side and a natural wood-effect finish on the other, allowing homeowners to choose the look that best suits their space. Explorer boards are uncapped but engineered for moisture resistance and reduced maintenance and are backed by a 15-year warranty, making them a practical choice for everyday outdoor living.
EnviroBuild's Frontier Range: Premium Durability and Protection
The Frontier range is EnviroBuild’s premium composite decking solution, designed for enhanced durability and long-term performance. Frontier composite decking boards are manufactured using up to 90% recycled materials, including FSC® 100% certified wood fibres, and feature a protective capped outer layer.
This capped surface provides additional resistance to staining, fading, and weathering, helping the boards maintain their appearance over time. Frontier decking is particularly well-suited to high-traffic outdoor areas and comes with a 25-year stain and fade warranty, making it a long-term, low-maintenance alternative to both timber decking and uncapped composite boards.
Composite Decking vs Timber Decking: A Materials Perspective
When deciding between a composite or wood deck, the key difference lies in how the materials behave outdoors. Timber decking is made entirely from natural wood, which means it absorbs moisture, expands, contracts, and requires regular treatment to maintain its appearance.
Composite decking, by contrast, is an engineered material designed to control these natural movements. For homeowners weighing up composite decking or wood, the choice often comes down to whether they value natural variation or engineered consistency and reduced maintenance.
If you are finding it a challenge to decide which of our decking will be the right one for you then do make use of our free sample packs. They can be ordered free of charge right here from our website.
Hardwood vs Composite Decking: What’s the Difference in Materials?
The comparison between hardwood vs composite decking is largely about material structure. Hardwood decking is a single organic material that offers natural beauty but reacts continuously to the environment. What is a composite deck made of? Composite decking combines recycled plastic with wood fibres to create a more stable and predictable product.
For those choosing between wood or composite decking, composite boards offer improved resistance to moisture, a more consistent finish, and significantly less ongoing maintenance, making them appealing for modern outdoor spaces.
What Is Composite Deck Made Of: What This Means for Homeowners Choosing Decking for Their Project
Understanding what a composite deck is made of helps homeowners make better decisions about durability, upkeep, and long-term value. Because composite decking is engineered rather than harvested, it offers lower maintenance requirements, long-lasting performance, and a consistent appearance across all boards. These qualities make composite decking a practical choice for busy households, rental properties, and commercial projects where reliability and appearance need to be maintained over time.
Finding the Right Composite Decking Boards
When choosing composite decking boards, material composition plays an important role in how the decking will perform in real-world conditions. Board structure influences surface finish, durability, and lifespan, all of which affect how well the decking suits a particular space. Whether you are only searching for composite decking boards near me or planning a full outdoor renovation, understanding exactly what composite decks are made of ensures you select a solution that matches both your lifestyle and your expectations.
Choose EnviroBuild for Your Next Decking Project
A composite deck is more than just an alternative to timber. It is an engineered decking solution designed to perform consistently in outdoor environments. By combining recycled plastics with reclaimed wood fibres, EnviroBuild composite decking delivers durability, sustainability, and visual appeal in one product. Knowing what composite deck is made of makes it easier for homeowners to decide between composite decking and wood and to choose a decking option that will stand the test of time.
If you'd like to completely transform your outdoor space with more than just decking, we also offer aluminium decking, fibre cement decking, 100% recycled plastic decking, composite cladding, aluminium cladding, composite fencing, porcelain paving, and the necessary substructure.
We hope we answered your question 'What Is Composite Deck Made Of', and if you need any further assistance, please reach out to us at info@envirobuild.com or at 020 8088 4888 between 9 am and 5 pm weekdays. We also have a handy online decking calculator if you need assistance calculating how many boards and accessories you might need for your project.
