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HDPE composite decking

HDPE composite decking

Posted by Deckorum Admin on March 28, 2023

HDPE and composite decking

High-density polyethylene, or HDPE, you may have heard of it. But what is it and how is it used in composite decking boards?

HDPE is a versatile plastic material that is widely used in a variety of applications. HDPE is widely used from packaging and consumer goods to industrial and construction materials. It is renowned for its strength, durability and resistance to impact and chemicals.

One of the most common uses of HDPE is in the production of plastic bottles and containers. This is because HDPE is lightweight, yet strong enough to withstand the pressure of liquids and gases inside the container.

Recyclability of HDPE

HDPE bottles and containers are easy to recycle. This makes them an eco-friendly option for packaging consumer goods. Examples of these goods include milk, juice, and cleaning products.

Another common use of HDPE is in the manufacturing of pipes and tubing. This is because HDPE is highly resistant to corrosion and abrasion, making it suitable for use in underground and underwater applications.

HDPE pipes and tubing are popular for many uses. They are commonly found in water and sewage systems. Mining, oil and gas industries also use them.

In addition, HDPE is also widely used in the production of industrial and consumer goods. This includes everything from plastic bags and sheets to furniture and automotive parts. Its properties of being strong and durable make it suitable for use in these applications.

HDPE is also used in the production of plastic lumber, which is a durable and long-lasting alternative to traditional wood products. It is often used in outdoor composite decking, park benches, and playground equipment.

One of the most important benefits of HDPE is its recyclability. HDPE is one of the most widely recycled plastics. It can be recycled into plastic bottles, containers, pipe and tubing, and even plastic lumber. Additionally, it can also be used to create composite decking boards.

How is HDPE used specifically in decking boards?

Composite decking is a popular choice for homeowners and builders looking for a durable and low-maintenance alternative to traditional wood decking. Made from a mixture of wood fibers and plastic, composite decking is designed to mimic the look and feel of natural wood while offering improved performance and longevity.

HDPE is one of the most commonly used types of plastic in composite decking because of its strength, durability, and resistance to impact and chemicals.

HDPE is used in composite decking in two ways, as a replacement for wood fibers and as a plastic binder. This is ground into small fibers, which are then mixed with wood fibers to create the composite material. The HDPE fibers provide the composite decking with a natural wood-like appearance while the plastic fibers add strength and durability. HDPE is also used as a binder, which holds the wood fibers together to create a solid and durable composite decking material.


One of the biggest advantages of HDPE in composite decking is its durability and resistance to rot, decay, and insect damage. Composite decking made with HDPE is not vulnerable to warping, cracking, or fading like natural wood.

This means it can last for decades with minimal upkeep. This makes composite decking an ideal choice for outdoor spaces that are exposed to the elements, such as decks, patios, and balconies.

Another advantage of HDPE in composite decking is its low-maintenance requirements. Unlike natural wood decking, which requires regular staining and sealing to protect it from the elements. Composite decking made with HDPE is virtually maintenance-free. This means that homeowners and builders can enjoy their outdoor spaces without the hassle and expense of ongoing maintenance.

HDPE is also an environmentally friendly choice. Composite decking products that use HDPE as a binder often incorporate recycled materials, such as reclaimed wood and plastic. By utilizing recycled materials, the demand for virgin materials is reduced, helping to conserve natural resources.

Additionally, composite decking made with HDPE is a sustainable choice. This is due to its long lifespan, which eliminates the need for regular replacement like traditional wood decking. This means that fewer resources are needed in the long run, making it an environmentally friendly option.

Another advantage of HDPE in composite decking is its resistance to moisture and mold. This has a high resistance to moisture, which makes it suitable for use in composite decking that is exposed to the elements.

Additionally, it does not absorb moisture which means it does not rot, warp or crack. This can be particularly beneficial in areas with high humidity, or where composite decking is used. These areas include swimming pool surrounds or near a body of water.

Benefits of using HDPE

In addition, HDPE is also UV-resistant, which means that it does not fade or degrade in direct sunlight. This makes it an ideal choice for composite decking that will be installed in sunny and exposed areas. This is also resistant to mold and mildew, which makes it suitable for use in composite decking that will be installed in damp and humid areas.

So folks, hopefully that gives you a better overview on what HDPE is and how it is utilised in the production of composite decking boards.

For decking boards that use the highest grade materials. Check out or product pages at Composite Decking Boards UK – Composite Deck – Deckorum where you will find a range of boards in different designs and colours.