Composite Deck Lifespan

May 15, 2019

An outdoor living space is an investment, specifically one built with a composite deck.

Investing in that makes you want to ensure your space looks immaculate and performs for decades. That's one of the main advantages of our preferred composite material: the average composite deck lifespan is at least 25 to 30 years, and possibly longer.

lifespan of composite decking

At Keystone Custom Decks, we build using Trex and TimberTech composite decking, both known for their gorgeous styles and long lifespans. When homeowners ask us how long composite decks last, we start with the minimum 25 to 30-year span covered by the warranty — but we also let them know that composite decks can last far longer. Learn more about the science contributing to the outstanding composite deck lifespan, the strengths of composite decks, and the warranties that back these luxury products.

How Long Does a Composite Deck Last?

From our experience, composite decking is the most durable, least maintenance-intensive product on the market. So, how long does a composite deck last? A minimum of 25 to 30 years, possibly lasting from 30 to 50 years. In addition to being the manufacturer-reported number, third-party testing can also help confirm the lifespan of a deck.

how long do composite decks last

While the average wooden deck has a lifespan of around 10 to 15 years, composite products far exceed wood decks due to the engineered nature of the product. Composite deck boards are made by molding natural wood and synthetic fibers into boards and capping them with a vinyl shield. This production process extends the composite decking lifespan by preventing the damage that destroys cheaper wooden decks.

Fun fact: Composite decks also help prevent plastic pollution because they use recycled plastic that might otherwise end up in landfills!

Here's how composite handles the three most common issues that limit the lifespan of wooden decks:

  1. Mold & Rot — When mold grows on the surface of a wooden deck, it's only a matter of time before the deck begins to rot and fall apart. While mold growth destroys wooden deck boards, composite boards are impervious to it — so while it is unsightly, it won't ruin your deck. This is one of the significant factors behind composite decking's superior lifespan.
  2. Discoloration — Besides wooden decks becoming structurally unsound, they show their age in a way that composite decks don't. While the ultra-durable composite material keeps its color, wooden decks fade and start to resemble driftwood rather than the luxury product they did when new. This is one of the reasons that composite decks can be 25 or 30 years old and still look new. In fact, color is one of the major things covered by composite manufacturer warranties. The color in composite decking goes all the way through the board, so it shouldn't chip or scratch off, either.
  3. Splintering — Another advantage of the engineered capped-composite product is that it doesn't splinter like wooden decks. It's not uncommon to see wood deck boards splinter and break apart at the 10-year mark. Since this doesn't happen with composite products, it expands the usable lifespan.

In addition, cleaning composite decking should be a breeze. Here is an article that tells you all about how to clean your composite deck. 

Learn more about how to maintain composite decking.

Trex and TimberTech Composite Decking Warranties

One of the best ways to evaluate how much confidence to have in a product is to see how confident the manufacturer is. Composite decks have a lifespan of at least 25 to 30 years — and their manufacturers have warranties to match.

At Keystone Custom Decks, we primarily build using Trex and TimberTech composite decking products. Their warranties reflect the minimum possible life you can expect from one of these luxury materials.

Trex Decking Warranty

trex composite decking warranty

A 25-year stain backs Trex composite decking and fade warranty that ensures the color will not dramatically fade or become discolored.

TimberTech Decking Warranty

timbertech composite decking warranty

TimberTech composite deck boards are backed by a 30-year product warranty that covers the color and integrity of the product.

You can feel confident building with these composite products thanks to the manufacturer warranties from these two leading brands — and the Keystone Custom Decks warranty.

Skilled Composite Deck Installers

Whether you're in the earliest steps of your research or if you're ready to move forward, Keystone Custom Decks is prepared to be your deck-building partner. If you have more questions about composite decking material or are prepared to schedule your design consultation, you can start the conversation today!

We also offer other outdoor living services, including:

And more!

We have decades of experience as premier composite deck builders in Pennsylvania and New York. See some of our showpiece custom decks — and get your free quote today!

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