Picking a deck material locks you into a 15–25 year commitment, so the choice between wood, composite, PVC, and aluminum shouldn't come down to gut feeling. Each option trades durability, maintenance, upfront cost, and aesthetic appeal in different ways. Understanding the real pricing and performance trade-offs helps you make a choice you won't regret.
Pressure-Treated Wood: Budget Option with Maintenance Strings Attached
Pressure-treated lumber remains the cheapest deck material at $3–$8 per square foot for decking boards alone. Installation typically runs another $8–$15 per square foot depending on your region and deck complexity. Over 20 years, though, you'll spend $2,000–$5,000 on staining, sealing, and repairs—costs that add up quickly.
Wood decks demand annual or biennial maintenance. You'll refinish every 2–3 years to prevent rot, splintering, and UV damage. If you live in a humid or wet climate, expect more frequent sealing. On the upside, wood looks warm and natural, and repairs are straightforward (individual boards can be replaced). The tradeoff: sweat equity or contractor labor.
Composite Decking: The Mainstream Middle Ground
Composite boards (wood fibers bound in plastic resin) cost $10–$18 per square foot, with installation running $12–$20 per square foot. Total installed costs for a 300 sq ft deck land around $6,600–$11,400. That 30–50% premium over wood pays dividends in durability.
Composite requires minimal maintenance—no staining, no sealing. Spot-clean with soap and water. Some composites are more stain-resistant than others (ask about fade and stain warranties before buying). Lifespan often reaches 25–30 years with zero structural maintenance.
Downsides: composites can feel slightly less natural underfoot, fade over time, and initially cost more. They also retain heat in intense sun, making barefoot walking uncomfortable in summer. Check reviews for specific brands; quality varies significantly.
PVC Decking: Maximum Low-Maintenance Performance
PVC (polyvinyl chloride) offers the lowest-maintenance option at $12–$20 per square foot, with installation at $14–$22 per square foot. A 300 sq ft deck runs $7,800–$12,600 installed. You're paying for durability and convenience.
PVC boards are hollow or solid engineered plastic with no wood content. They won't rot, splinter, or stain. They're immune to insects and UV damage doesn't visibly degrade them like it does composites. Lifespan typically exceeds 30 years. Cleaning is literally a garden hose.
The catch: PVC expands and contracts more than wood or composite in temperature swings, so proper gapping during installation matters. Heat absorption is similar to composite. Cost is higher upfront, but if you prioritize zero-maintenance living, PVC is worth the investment.
Aluminum Decking: Premium, Non-Wood Alternative
Aluminum decking costs $18–$35 per square foot for premium brands, with installation at $15–$25 per square foot. It's the priciest option, reserved for high-end builds or specific use cases (commercial spaces, coastal properties needing non-corrosive materials).
Aluminum resists corrosion, fire, insects, and rot. It's lightweight, which matters for deck raises or second-story installations. Some homeowners prefer the modern aesthetic. Lifespan reaches 30+ years.
Drawbacks: limited style variety compared to wood or composite, can feel cold or slippery in certain finishes, and it's overkill for most residential decks. Repair and replacement boards are harder to source than wood or composite.
Comparison at a Glance
| Material | Material Cost | Installation | Total (300 sq ft) | Maintenance | Lifespan | |----------|---------------|--------------|-------------------|-------------|----------| | Pressure-Treated Wood | $3–$8/sq ft | $8–$15/sq ft | $3,300–$6,900 | High (annual) | 15–20 years | | Composite | $10–$18/sq ft | $12–$20/sq ft | $6,600–$11,400 | Low | 25–30 years | | PVC | $12–$20/sq ft | $14–$22/sq ft | $7,800–$12,600 | Minimal | 30+ years | | Aluminum | $18–$35/sq ft | $15–$25/sq ft | $9,900–$18,000 | Minimal | 30+ years |
Making Your Decision
Start by calculating your true cost of ownership: material + installation + projected maintenance over 20 years. Budget-conscious homeowners willing to maintain should choose wood. Those seeking balance pick composite. Anyone wanting zero upkeep goes PVC. If you're unsure which material fits your property or budget, platforms like Mercoly let you compare and connect with trusted deck contractors in your area who can quote each option for your specific project.
Frequently Asked Questions
Q: How long does deck installation typically take? A: Most deck installations take 2–4 weeks from start to finish, depending on size, complexity, and weather. Permit approval can add 1–3 weeks before work begins.
Q: Can I install a deck myself to save money? A: DIY installation is possible if you have carpentry experience, but mistakes in framing or fastening create safety risks and voids warranties. Hiring a licensed contractor costs more upfront but ensures code compliance and longevity.
Q: What's the difference between pressure-treated wood grades? A: Ground-contact (UC4B) lumber resists rot and is used for posts and ground-level framing. Above-ground lumber is lighter-duty and cheaper. Always use ground-contact lumber for structural support touching soil.
Get personalized quotes from deck contractors in your area to find the right material and installer for your project.