Deck Materials: Wood vs. Composite — Which Is Right for You?
Compare pressure-treated wood, cedar, and composite decking on cost, lifespan, maintenance, and appearance.
A deck expands your living space and consistently ranks among the better-ROI outdoor improvements. The material you choose determines how much time you'll spend maintaining it over the next 15–25 years. Here's an honest comparison.
Pressure-Treated Wood — Lowest Upfront Cost
- Cost: $15–$25/sq ft installed
- Lifespan: 10–15 years with regular maintenance
- Maintenance: Stain or seal every 1–2 years, inspect for rot and fasteners
- Appearance: Natural wood grain, grays over time without stain
- Best for: Budget-conscious homeowners comfortable with annual upkeep
Cedar or Redwood — Premium Natural Wood
- Cost: $25–$40/sq ft installed
- Lifespan: 15–20 years with maintenance
- Maintenance: Stain every 2–3 years to preserve color
- Appearance: Rich natural tones, beautiful grain
- Best for: Homeowners who want real wood aesthetics and will maintain it
Composite Decking — Lowest Maintenance
Composite boards are made from wood fibers and recycled plastic. They don't rot, splinter, or need staining. Early composite looked plasticky; modern boards are remarkably wood-like with multi-tone embossing.
- Cost: $30–$55/sq ft installed
- Lifespan: 25–30+ years
- Maintenance: Occasional soap-and-water cleaning
- Appearance: Consistent color, won't gray or fade (quality brands)
- Best for: Homeowners who want to enjoy the deck, not maintain it
Total Cost of Ownership
A $5,000 pressure-treated deck may cost $3,000+ in stain, repairs, and eventual replacement over 20 years. A $10,000 composite deck costs nearly nothing to maintain and lasts longer. Over a 20-year horizon, composite often costs less total — despite the higher upfront price.
Building Code and Permit Considerations
- Decks over 30 inches high typically require permits and railings
- Ledger board attachment to the house is the most common failure point — use lag bolts, not nails
- Composite requires proper joist spacing (usually 16 inches on center)
- Check local codes for railing height and baluster spacing requirements
Frequently Asked Questions
Does composite decking get hot in the sun?
Yes — darker composite boards can become uncomfortably hot in direct summer sun. Lighter colors and brands with cooling technology perform better. Wood also gets hot, but composite tends to retain heat longer.
Can composite decking be painted or stained?
Most composite decking cannot be stained and shouldn't be painted — it voids the warranty. Choose your color carefully at purchase. Some older composite products accept special composite stains, but this is the exception.
How long does it take to build a deck?
A simple 12x16 ground-level deck takes 3–5 days for a professional crew. Elevated decks with stairs and railings take 1–2 weeks. Permitting adds 1–4 weeks before construction begins.