Aluminum Decking Cost: 2026 Installed Price Calculator
Mike Martin, MA CSL, is the founder and construction cost editor of RemodelingExpense. His residential construction experience informs the site’s cost research, calculators, and homeowner project guidance.
Aluminum decking cost ranges from $30.00 to $60.00 per sq. ft. installed, with most 320 sq. ft. aluminum decking projects costing about $9,600 to $19,200.
This estimate is for aluminum deck boards and aluminum deck installation, including powder-coated aluminum boards, interlocking planks, watertight deck systems, fasteners, basic framing tie-in, and local labor. It is not for pressure-treated decking, cedar decking, redwood decking, hardwood decking, composite decking, PVC decking, deck lighting, or pool deck surfacing.
Enter your ZIP code and deck size below to estimate local material, labor, and installed cost.
Cost Calculator
Aluminum Decking Cost Calculator
Aluminum decking cost depends on deck size, powder-coated aluminum boards, interlocking planks, watertight deck systems, drainage below the deck, corrosion resistance, slip resistance, heat, noise, expansion and contraction, fasteners, framing condition, railing, stairs, demolition, permits, and local labor rates.
Your estimated cost
For 320 sq. ft.
$9,600 – $19,200
About $30 – $60 per sq. ft.
Use your estimate as a starting point, then compare real prices from local contractors.
| Cost item | Low estimate | High estimate |
|---|---|---|
| Material | $4,800 | $8,000 |
| Labor | $4,800 | $11,200 |
| Estimated installed cost | $9,600 | $19,200 |
| Installed cost per sq. ft. | $30 | $60 |
Why your price may change
- Local labor rates vary.
- Material quality affects the price.
- Old material removal, repairs, permits, or code updates can add cost.
- Hard-to-reach areas, complex layouts, rush jobs, or premium contractors may cost more.
Estimate includes local labor adjustments and may differ slightly from rounded national cost examples.
Aluminum Decking Cost vs Value
Aluminum Decking may recover about 45%–65% of its cost.
Bottom line: Aluminum decking is a premium non-wood deck surface, with value driven by board profile, coating, watertight or dry-below design, corrosion resistance, framing condition, railing and stair scope, heat, noise, and long-term maintenance.
Worth it: Homeowners who want a durable non-wood deck board, corrosion resistance, low maintenance, or a watertight deck system above usable space.
Skip it: Projects where pressure-treated, cedar, redwood, hardwood, composite, PVC, deck lighting, or pool deck surfacing is the main scope.
ROI ranges are planning estimates and should not be treated as an appraisal. This is only an estimate. Real resale value depends on your home, neighborhood, market, project quality, and buyer demand.
How to Measure Aluminum Decking
Measure the deck surface in square feet. Multiply deck length by deck width, then add square footage for landings, stair treads, picture-frame borders, angled cuts, drainage details, and waste. A 16 ft. by 20 ft. deck is 320 sq. ft.
Aluminum decking pricing changes when the quote includes new framing, railing, stairs, demolition, joist repair, watertight deck details, dry-below drainage, permits, or second-story access.
Aluminum Decking Cost Factors
Contractor Reality Check
Aluminum decking is a premium non-wood deck surface. The cost depends heavily on board profile, coating, interlocking design, drainage below the deck, fasteners, and whether the system is meant to create usable dry space underneath. Ask whether the quote includes dry-below details, railing, stairs, trim, and any framing repairs.
What to Confirm Before You Sign
- Total deck size in square feet
- Aluminum board brand, profile, and finish
- Powder-coated aluminum or standard aluminum board surface
- Interlocking planks, drainage channels, or watertight deck system
- Existing framing condition and joist spacing
- Expansion, contraction, fastening, and trim details
- Railing, stairs, fascia, demolition, and disposal scope
- Warranty terms for coating, corrosion, leaks, noise, and workmanship
Common Aluminum Decking Add-On Costs
| Item | Typical Added Cost |
|---|---|
| Old deck board removal | $2.00 – $6.00 per sq. ft. |
| Joist or framing repair | $500 – $5,000+ |
| Dry-below drainage details | $5.00 – $15.00 per sq. ft. |
| Aluminum or metal deck railing | $70 – $180 per linear ft. |
| Deck stairs | $500 – $3,500+ |
Aluminum Decking Cost by Type
| Aluminum Decking Type | Installed Cost per Sq. Ft. | Best For |
|---|---|---|
| Standard aluminum decking | $30.00 – $42.00 | Durable non-wood deck surfaces with low maintenance needs |
| Powder-coated aluminum decking | $40.00 – $52.00 | Better finish appearance, corrosion resistance, and color options |
| Watertight aluminum decking system | $50.00 – $60.00+ | Second-story decks, dry-below use, and covered storage or patio space below |
Cost by Aluminum Deck Size
| Deck Size | Estimated Installed Cost |
|---|---|
| 200 sq. ft. | $6,000 – $12,000 |
| 320 sq. ft. | $9,600 – $19,200 |
| 400 sq. ft. | $12,000 – $24,000 |
| 500 sq. ft. | $15,000 – $30,000 |
Is Aluminum Decking Worth It?
Aluminum decking is usually worth it when you want a durable non-wood deck surface, strong moisture resistance, low maintenance, and the option for a watertight deck system above usable space. It may not be the best choice if you want the lowest upfront cost, a natural wood feel, or a quieter deck surface during rain or foot traffic.
Related Deck Cost Guides
References
- North American Deck and Railing Association
- American Wood Council: Prescriptive Residential Wood Deck Construction Guide
- NAHB: Building Codes
- This Old House: Decking
Last Updated: 6/19/26
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