Wood was the decking material of choice until the late 1990s. At that point, composite decking was introduced and became an attractive alternative to wood due to its low maintenance and high durability. But if it’s not made of wood, what is composite decking made of? Read on to learn from the experts.

Keith Melanson

Keith Melanson

Keith Melanson, Project Manager of RenosGroup, a renovation company with over 35 years of experience.

Wood or non-wood composite decks

A composite deck is made of either wood flour, recycled post-industrial material, or wood fibres such as polyethylene or hardwood. There are also non-wood composite decks that are created with a fibre-like inner structure. These great decks offer amazing benefits such as high durability, low maintenance, mold/slip-resistant – truly a homeowner’s dream.

Mix of plastic and wood

Composite decking is a mixture of plastic and wood fibers held together with a bonding agent. The ingredients are heated, mixed together, and then cooled.

Some composite decking is made of recycled material, making it a greener choice.

Lisa Torelli-Sauer

Lisa Torelli-Sauer

Lisa Torelli-Sauer, editor at Sensible Digs, a website geared toward helping people make smart investments in their homes.
Jesse Silkoff

Jesse Silkoff

Jesse Silkoff, Co-Founder and President, MyRoofingPal.
Composite decking is made of a mix of plastic and wood. The type of plastic and wood used varies. Sometimes the wood portion is sawdust or wood chips, and the plastic could potentially be from recycled materials.

Resin and wood

Composite decking is an advanced and reliable decking material made of resin and wood. Manufacturers use wood pieces to give the panels the appearance of wood, while at the same time, the resin holds the wood together to protect the deck from weather damage. Composite decking will last longer than other popular decking options, and will never need to be resealed or stained.

Jay Weaver

Jay Weaver, Manages the Eagle Building Solutions.

Isaac Fisher

Isaac Fisher has been the owner of Deck Craft Plus, LLC for nearly two decades. He has a passion for helping people design the decks of their dreams.

Varies for each brand

In recent years, composite decking materials have taken the deck building world by storm. The exact composition for composite decking materials varies for each brand, however, the primary ingredients are plastic (polypropylene or polyethylene) and wood (sawdust, wood chips, or wood fiber pieces). Typically, the plastic and wood materials used in composite decking are sourced from recycled materials, which make composite decking a more ecofriendly option for consumers. When compared to traditional alternatives, composite decking is more resistant to rot, warping, and splintering. Composite decking is a smart choice for consumers looking for a lower maintenance decking material.

This is a crowdsourced article. Contributors' statements do not necessarily reflect the opinion of this website, other people, businesses, or other contributors.


  • Nate Barrett

    As the President of SRI Decks, my greatest satisfaction comes from the immediate sense of fulfillment that our work brings. From the initial design discussions with our customers to the moment we capture the final project in photos, I feel an immense pride in my team for their dedicated efforts. My passion for hands-on work and outdoor projects is matched only by the joy I derive from seeing a delighted customer when we’ve successfully completed a job. Fun Facts: I like hot chocolate in my coffee. I’ve been with SRI for 12 years, prior to ownership. I have a daughter, 3 dogs and a loving girlfriend.

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