The 30-Second Verdict
Composite decking (Trex, TimberTech) is the best long-term value for Florida decks — it outperforms wood in every Florida-specific category except upfront cost. PT wood is the budget starting point.
Head-to-Head Breakdown
Composite Decking (Trex/TimberTech)
Pros
- No sealing, staining, or sanding required
- Resists Florida's moisture, UV, and insects
- 25–30 year fade and stain warranty (premium products)
- Splinter-free — important for barefoot Florida use
Cons
- 2–3x higher upfront cost than pressure-treated
- Gets warm in Florida direct sun (capped composite handles this better)
- Scratches can be harder to repair invisibly
Pressure-Treated Wood
Pros
- Lowest upfront cost — 40–60% less than composite
- Familiar installation — most contractors experienced
- Can be repaired easily with matching lumber
- Structurally strong for complex deck designs
Cons
- Requires staining/sealing every 2–3 years in Florida UV
- Splinters, warps, and cracks in Florida heat and humidity
- PT lumber treated with copper can corrode some metal fasteners
- High maintenance cost over time offsets initial savings
Side-by-Side Comparison
| Composite Decking (Trex/TimberTech) | Pressure-Treated Wood | |
|---|---|---|
| Cost (installed, per sq ft) | $35–$60 (composite) | $18–$30 (PT wood) |
| PVC Decking Cost | $45–$75/sq ft | N/A |
| Maintenance | Minimal — occasional wash | Stain/seal every 2–3 years |
| Lifespan in Florida | 25–40 years | 10–20 years with maintenance |
| Heat in Florida Sun | Warm — capped composite cooler | Hot but dissipates quickly |
| Mold/Mildew Resistance | Excellent (capped composite) | Moderate — requires treatment |
| Termite Risk | None | PT lumber treated but not immune |
| Best For | Long-term investment, high-use decks | Budget builds, structural framing |
Frequently Asked Questions
Does composite decking get too hot in Florida?
Uncapped composite can reach 140–160°F in direct Florida sun — uncomfortable barefoot. Capped composite (Trex Transcend, TimberTech Azek) with lighter colors stays 20–30°F cooler. Choose lighter colors and capped products for Florida sun-exposed decks.
How long does a pressure-treated wood deck last in Florida?
With consistent maintenance (sealing every 2 years, board replacement as needed), a PT deck in Florida can last 15–20 years. Without maintenance, expect 8–12 years before significant deterioration. Florida's humidity and UV accelerate wood degradation much faster than northern climates.