decking
Aluminum vs Composite Decking: Which Lasts Longer? (2026)
Reviewed by Lumberama's Wood Comparison Team
|Last updated June 1, 2026Aluminum decking is gaining popularity as a fireproof, rot-proof alternative. While composite dominates, aluminum offers unique advantages for specific applications.
Aluminum Decking
vs
vs
Composite Decking
Key Takeaways
- Aluminum decking is gaining popularity as a fireproof, rot-proof alternative.
- While composite dominates, aluminum offers unique advantages for specific applications.
- Aluminum is ultimate performance decking for extreme conditions.
- Composite remains best for residential beauty.
- Choose aluminum for waterfront, rooftop, or wildfire zones.
| Property | Aluminum Decking | Composite Decking |
|---|---|---|
| $12-$20 | $5-$12 | |
| 50+ years | 25-30 years | |
| Fireproof | Fire-resistant |
Aluminum Decking
Pros
- Longest lifespan of any decking, Stays cool in sun, Completely fireproof, Extremely lightweight
Cons
- Highest upfront cost, Metallic appearance, Noisy in rain, Limited aesthetic appeal
Composite Decking
Pros
- Wood-like appearance, Lower cost, Wide style variety, Quiet underfoot
Cons
- Gets hot in sun, Shorter lifespan, Not fireproof, Heavier material
Best Use Cases
Choose aluminum for waterfront, rooftop, or wildfire zones. Choose composite for residential aesthetics.
Verdict
Aluminum is ultimate performance decking for extreme conditions. Composite remains best for residential beauty.
Frequently Asked Questions
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