Composite vs Wood Decking: Cost, Lifespan & Maintenance
Quick answer: Wood decking usually costs less to buy, while composite decking costs less to own. Treated timber needs cleaning, sanding and re-staining every few years and typically lasts 10–15 years; quality composite needs only washing and commonly lasts 20 years or more. Real wood still wins on natural character, repairability and the lowest upfront price.
Composite or wood is the first question almost every deck project asks. Both can make a beautiful deck. They just ask for different kinds of investment: wood asks for money and time over the years, composite asks for more of it up front.
This guide compares the two honestly, point by point. We make composite decking, but we also want you to choose the right material for your project, and sometimes that is wood.
Composite and timber can look similar on day one; the difference shows over the years.
Composite vs Wood at a Glance
| Composite (capped) | Pressure-treated softwood | Tropical hardwood (e.g. ipe) | |
|---|---|---|---|
| Upfront material cost | Medium to high | Lowest | High |
| Yearly upkeep | Wash once or twice a year | Clean, plus re-stain or oil every 1–3 years | Clean, plus oil to keep the colour |
| Typical lifespan | 20+ years | 10–15 years with care | 25+ years |
| Rot and insects | Resistant | Treated, but vulnerable over time | Naturally resistant |
| Splinters | No | Yes, as it ages | Rarely |
| Colour over time | Stable after early weathering | Greys without stain | Greys to silver without oil |
| Repair | Replace the board | Sand and refinish | Sand and refinish |
| Feel | Smooth, consistent | Natural, varies | Dense, natural |
The rest of this guide explains each line.
Upfront Cost
On material price alone, pressure-treated pine or other softwood is the cheapest decking in most markets. Composite boards cost more, and capped boards more than uncapped. Premium tropical hardwoods such as ipe are often as expensive as composite, or more.
The board is only part of the bill. Joists, fixings, fascia and labour add a similar amount for both materials. Composite decks are often built on aluminium or closer-spaced joists and use hidden clips, which can add to the frame cost. Timber decks need more face screws and sometimes more preparation of each board.
Prices vary a lot by country and season, so use local quotes for both options. The comparison that matters is the total cost of ownership, which we cover below.
Maintenance
This is where the two materials differ most.
A timber deck typically needs:
- A deep clean every year
- Sanding where the surface has roughened or splintered
- A new coat of stain or oil every one to three years, depending on sun exposure and product
- Checking and replacing boards that have split, cupped or started to rot
- Re-fixing screws that have lifted as boards move
A composite deck typically needs:
- A wash with water and a soft brush, once or twice a year
- Prompt cleaning of grease or food spills, especially on uncapped boards
- Clearing leaves and debris so water and dirt do not sit on the surface
No sanding, no staining, no sealing. For many homeowners, the time saved every summer is the real reason they choose composite.
Timber decks need sanding and re-staining every few years to stay protected.
A composite deck usually needs only a wash with water and a soft brush.
Lifespan
A well-maintained pressure-treated softwood deck commonly lasts 10–15 years before boards need replacing, and less if maintenance is skipped or the site stays damp. Dense tropical hardwoods can last 25 years or more.
Quality composite decking commonly lasts 20 years or more with basic cleaning. Capped boards often carry long written warranties, but terms differ widely, so always read what is covered.
Two things shorten the life of either material: a poor substructure, and poor ventilation. A composite deck on rotting timber joists will not outlast the joists, which is why many composite decks are built on aluminium or composite frames.
Total Cost of Ownership
To compare honestly, work out the cost over the years you expect to keep the deck. You can do it in five steps with local prices:
- Build cost: boards, frame, fixings and labour for each material.
- Yearly upkeep: cleaning products, stain or oil, and either your time or a contractor’s fee.
- Refinishing cycles: how many times timber will be re-stained over the period.
- Repairs and replacement: boards replaced along the way, and whether the whole deck will need rebuilding within the period.
- Add it up over 10, 15 and 20 years.
| Cost item | Composite | Treated timber |
|---|---|---|
| Build cost (year 0) | Higher | Lower |
| Yearly cleaning | Low | Low |
| Re-staining every 1–3 years | None | Recurring |
| Board repairs | Rare | Increases with age |
| Rebuild within 20 years | Usually not needed | Often needed |
In most markets, composite is the more expensive deck in year one and the cheaper deck somewhere in the second half of its life. The more you value your weekends, the sooner that point arrives.
Look and Feel
Wood is real, and nothing fully copies it. Each board has its own grain and colour, and the deck changes character as it weathers. Some people love that silver-grey patina; others re-stain to keep the original tone.
Composite gives a consistent, even look. Capped boards are made with printed or embossed wood grain and multi-tone colours that look much closer to timber than early composites. They stay close to their installed colour after a period of early weathering. Read more about why composite colour can vary.
Underfoot, composite feels smooth and consistent, with no splinters. Timber feels warmer and more natural, but older boards can roughen and splinter.
Heat, Slip and Comfort
- Heat: All decking gets warm in strong sun. Composite, especially in dark colours, can get hotter than light timber. For pool surrounds and barefoot areas, choose lighter composite colours or plan some shade.
- Slip: Wet timber can become slippery as algae build up. Composite with a textured or embossed surface generally offers good grip, though no deck surface is slip-proof when wet and dirty.
- Splinters: Timber can splinter as it ages; composite does not.
Durability: Water, Rot and Insects
Timber is organic. Even treated wood can eventually rot where water sits, and boards can split, cup and twist as they wet and dry. Insects are a risk in some climates.
Composite combines wood fibre with polymer, which keeps water out and makes it resistant to rot and insects. Capped boards add a protective shell for even lower water absorption. Composite does expand and contract with temperature, which is why installers leave gaps at board ends and sides. To understand why the cap layer makes such a difference, see Capped vs Uncapped Composite Decking.
Environmental Impact
Both materials have a case:
- Timber is renewable and biodegradable, especially when it comes from certified, well-managed forests. Tropical hardwoods should be bought only with credible certification.
- Composite is usually made largely from reclaimed wood fibre and recycled plastic, and it needs no stains or sealers during its life. It is not biodegradable, so recycling at the end of its life is the best route.
The most sustainable deck is one built well enough to last, from responsibly sourced materials. Learn more on our sustainability page.
When Wood Is the Better Choice
- You want the lowest possible upfront cost.
- You love the natural look and enjoy maintaining it.
- The deck is temporary or you expect to sell the home soon.
- The project needs an authentic heritage or traditional look.
When Composite Is the Better Choice
- You want a deck that looks good with very little upkeep.
- The deck is in full sun, near a pool, or in a damp spot where timber would rot or grey quickly.
- Children and bare feet mean splinters matter.
- You plan to keep the deck for 15 years or more.
- It is a rental, hospitality or commercial space where maintenance time costs money.
Frequently Asked Questions
Is composite decking better than wood?
For most homeowners who want a low-maintenance deck that lasts, yes. Wood is still better for the lowest upfront cost, a fully natural look and easy repair by sanding.
Is composite decking worth the extra cost?
Usually, if you keep the deck for more than about a decade. Saving on staining, sanding and repairs often recovers the higher purchase price over the life of the deck.
Does composite decking look fake?
Early composites often did. Modern capped boards with embossed grain and multi-tone colours look much closer to timber, especially from standing height. Ordering samples is the best way to judge.
Does composite decking get hotter than wood?
It can, especially in dark colours. Choosing lighter colours, adding shade and avoiding the darkest boards for pool decks keeps surfaces more comfortable.
Can I put composite decking on an old wooden frame?
Only if the frame is sound, straight and spaced to the composite manufacturer’s requirements. In many cases, an old timber frame is not, and replacing it is the safer choice.
Still Deciding?
Hold both in your hand. A sample tells you more about colour, weight and texture than any comparison table.
- Order samples of our composite decking, or browse our composite decking range.
- New to composite? Start with our composite decking buying guide.