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A wood deck typically lasts 10 to 20 years, while a composite deck typically lasts 25 to 30 years or more. In the wood vs composite decking choice, composite wins on lifespan and wood wins on upfront price and easy repairs. The real question is whether you’d rather pay more now or spend weekends on upkeep later.
Wood vs composite decking: how long does each last?
Composite lasts roughly twice as long as wood. Bob Vila’s comparison puts composite at 25 to 30+ years and wood at 10 to 20 years, depending on species and how well the deck is maintained.
| Material | Typical lifespan | What keeps it going |
|---|---|---|
| Pressure-treated wood | 10 to 15 years | Regular cleaning, stain or sealer |
| Wood in general | 10 to 20 years | Species choice and upkeep |
| Composite | 25 to 30+ years | Sweeping and washing with soap and water |
How long a wood deck lasts
Pressure-treated decking, the usual budget choice, lasts 10 to 15 years according to a deck lifespan guide from composite maker Trex, which cites InterNACHI for the figure.
Premium hardwoods such as ipe and mahogany can last longer than pressure-treated lumber, though that guide gives no number. Untreated softwoods are generally unsuitable for outdoor decking at all.
Wood’s enemies are rot, insects, warping and splintering. A deck that gets cleaned and sealed on schedule lands at the long end of the range, and one that gets ignored lands at the short end.
How long a composite deck lasts
Composite boards resist rot, insects and moisture, and they won’t splinter. That’s why 25 to 30 years is a normal expectation.
Trex claims 25 to 50 years depending on the product line, but that is the maker’s own claim. The InterNACHI figure it quotes for composite is about 25 years, which is a safer number to plan around.
How much upkeep does each deck need?
Wood needs a stain or sealer every 2 to 3 years, plus regular cleaning. Composite needs occasional sweeping and a wash with soap and water, and no staining, sealing or painting at all.
Wood: cleaning and staining every 2 to 3 years
Deck staining is the chore people underestimate. Skip it and wood fades, cracks and soaks up moisture, which is how a 20-year deck becomes a 10-year deck.
Mike Onderko of Trex says that “many buyers overlook the long-term expense of cleaning, sanding, staining, and sealing a wood deck.” He sells composite, so weigh the source, but the time and materials add up over a decade either way.
The upside is that wood forgives. You can sand it, restain it in a new color or paint it whenever you like.
Composite: lower-maintenance, not no-maintenance
BigDecks’ John Humphreys put it well: “It’s lower-maintenance, not no-maintenance.” Neglected composite can pick up surface scratches, mildew and stains.
A soapy wash a couple of times a year keeps that in check. It’s a far lighter load than a stain-and-seal cycle, and it never needs a sander.
Which costs more, wood or composite?
In wood vs composite decking, composite costs more up front, and pressure-treated pine is the cheapest way to build a deck. Composite boards are pricier, and some products need proprietary fasteners that add to the bill.
Over a longer stretch the picture shifts. Bob Vila’s reasoning is that composite may be the better long-term value, since lower maintenance and a longer life offset the higher starting price.
My own read is that the break-even depends on how long you’ll keep the house. If you plan to stay for 15 or 20 years, a wood deck will need restaining many times and may need replacing, while composite needs soap and water. If you’re selling soon, the cheaper build is easier to justify.
When you compare quotes, ask for the boards and the fasteners as separate lines, and add the cost of each staining cycle to the wood quote so both are measured over the same years. Our decking service can price both materials on the same plan. If you’re also fencing the yard, the wood fence cost breakdown for the Bay Area shows how another wood project adds up.
What are the drawbacks of each material?
Each material has real downsides, and in wood vs composite decking they mirror each other. Composite gives up some feel and repairability, while wood gives up time and lifespan.
Composite drawbacks:
- It can get hotter than wood in direct sunlight.
- Scratches and damage are difficult to repair.
- The look and feel are less authentic than real wood.
- Not all products are fully recyclable, and the boards are heavier.
Wood drawbacks:
- It needs regular staining or sealing.
- It’s more susceptible to rot, insects, warping and splintering.
- It has a shorter lifespan overall.
- It risks fading and cracking if you skip maintenance.
Wood’s advantages are natural grain, a lower upfront cost, cooler boards in the sun, and the ability to be sanded, refinished and repaired. Composite offers a wide range of colors and wood-grain finishes.
Does the 25 to 50 year composite warranty mean it lasts that long?
Photo by BarbaraPilgrim on Pixabay
No. A warranty term is not a guaranteed lifespan, and that matters when you compare wood vs composite decking on paper. Trex’s limited warranties run 25 years on its Enhance line, 35 years on Select, and 50 years on Transcend, Transcend Lineage and Signature, but each one covers specific defects, not every way a deck can wear out.
Wood warranties on materials and structure are described as limited and brief. A contractor’s workmanship warranty typically covers only installation errors.
Before you count years, read what the warranty covers and what it excludes, and who you’d call to make a claim. A long term on a brochure tells you how the maker stands behind a defect, not how your boards will look after two decades of sun, rain and foot traffic.
Wood’s coverage is thinner still, so with a wood deck the care you give it is the real guarantee.
How to choose between wood and composite for your Bay Area deck
For most homeowners, wood vs composite decking comes down to time and budget. Choose composite if you want the deck off your to-do list and expect to keep it 20 years or more. Choose wood if upfront budget matters most, you love real grain, and you don’t mind restaining every couple of years.
Bryan Rocha of Ashby Lumber says choosing a decking material is “more about one that fits your budget, lifestyle, and project.” That’s the right frame, and it’s why the same yard can suit either material for different families.
We’ve been doing this work for over 20 years, and the best way to see how each material finishes is to look at real decks in our photo gallery. If the deck will sit beside a patio or walkway, our hardscape services can plan the two together.
Frequently asked questions
Is composite decking really maintenance-free?
No. It skips staining, sealing and painting, but it still needs sweeping and washing. Neglected boards can develop scratches, mildew and stains.
Does composite decking get hotter than wood in the sun?
It can. Bob Vila lists extra heat in direct sunlight as a composite drawback and notes wood stays cooler, so a sunny, barefoot-heavy deck is worth thinking through.
Can a wood deck be refinished or repaired board by board?
Yes. Wood is easy to sand, refinish and repair, and you can replace individual boards as they age. Composite scratches and damage are harder to fix.
How long does pressure-treated wood decking last?
About 10 to 15 years, according to Trex citing InterNACHI. Wood decks overall run 10 to 20 years with careful maintenance, depending on the wood.
Sources
- Composite vs. Wood Deck — Bob Vila
- Deck Lifespans (And How to Beat the #1 Threat) — Trex
Cover photo by Đỗ Huy Hoàng on Pexels