Composite vs Wood Decking: Cost, Maintenance & Lifespan
Part of Decks, Fences & Roofing
Quick answer
Pressure-treated wood decking costs the least to install — about $15–$25 per square foot versus $30–$60 for composite — but it needs cleaning, staining or sealing every year or two and lasts 10–20 years. Composite costs about double up front, needs only occasional washing, and lasts 25–30+ years. Wood wins on budget; composite wins on maintenance and longevity.
The decking choice is really a trade between up-front cost and years of maintenance. Pressure-treated wood is cheap but high-upkeep; composite (wood fibers in plastic) is pricier but nearly maintenance-free.
Side by side
| Factor | Wood (PT / cedar) | Composite |
|---|---|---|
| Installed cost | $15–$25/ft² | $30–$60/ft² |
| Lifespan | 10–20 years | 25–30+ years |
| Maintenance | Clean + seal/stain yearly | Wash occasionally |
| Looks | Real wood grain, fades | Uniform, fade-resistant |
| Heat underfoot | Cooler | Hotter in direct sun |
| Scratches/stains | Sands out | Harder to repair |
| Lifetime cost | Lower up front, more upkeep | Higher up front, less upkeep |
When wood wins
- You want the lowest up-front cost.
- You like the look and feel of real wood and don't mind upkeep.
- You want to sand out scratches and refinish over time.
When composite wins
- You'd rather not stain or seal a deck every year.
- You're staying long-term and want a 25–30+ year surface.
- You want consistent color with no splinters, rot or warping.
The framing (joists, beams, footings) is the same for either surface, so the decking material is the main cost lever. Size the deck first, then price the boards.
Size boards, joists & footingsDeck CalculatorCalculate the decking boards, joists and screws for a deck from its length and width, with board size, joist spacing and a waste allowance.OpenFAQs
Is composite decking worth the extra cost?
If you'll keep the deck long-term and dislike yearly maintenance, often yes — composite's 25–30+ year life and minimal upkeep can offset its higher price. If budget is tight or you enjoy refinishing wood, pressure-treated lumber is a sound choice.
How much more does composite cost than wood?
Roughly double the material and installed cost — about $30–$60 per square foot for composite versus $15–$25 for pressure-treated wood. The framing underneath costs the same either way.
Does composite decking get hot?
Yes, composite can get noticeably hotter than wood in direct sun, especially darker colors. Lighter shades and shaded areas help if barefoot comfort matters.
Which lasts longer, wood or composite?
Composite, typically 25–30+ years versus 10–20 for wood — and it won't rot or splinter. Wood can last toward the high end of its range only with consistent sealing and repairs.