Cost Breakdown
| Item | Low | Average | High |
|---|---|---|---|
| Galvanized Steel Corrugated Panels (26-gauge) Standard galvanized steel with zinc coating. Most economical option. Best for simple roof profiles with long, straight runs. 40–50 year expected life. | $4 | $6 | $8 |
| Galvalume Corrugated Panels (26-gauge) Steel coated with aluminum-zinc alloy. Better corrosion resistance than galvanized, especially in coastal and humid climates. 50–60 year expected life. | $5 | $7 | $10 |
| Pre-Painted Corrugated Panels Factory-applied Kynar/PVDF finish in 20+ color options. Costs more upfront but eliminates repainting for 30+ years. Best for visible residential applications. | $6 | $8 | $12 |
| Corrugated Aluminum Panels Lightweight, rust-proof option for coastal environments. Dents more easily than steel but never corrodes. Good for structures where weight is a concern. | $7 | $9 | $13 |
| Old Roof Tear-Off and Disposal Removing existing asphalt shingles before metal installation. Required if the existing roof has two layers or the decking needs inspection/repair. | $1 | $2 | $3 |
| Full Installation — 2,000 sq ft Roof Complete corrugated metal roof installation including panels, underlayment, trim, flashing, fasteners, ridge caps, and labor. Excludes tear-off. | $10,000 | $15,000 | $22,000 |
Average Total Cost: $10,000–$22,000 for a 2,000 sq ft corrugated metal roof installed
Factors That Impact Cost
Metal Type and Gauge
26-gauge galvanized is the budget baseline. Moving to Galvalume adds 15–20%. Dropping to heavier 24-gauge steel adds 20–30% but increases dent resistance and lifespan. Aluminum costs 30–50% more than steel.
Roof Pitch and Complexity
Corrugated panels excel on simple gable roofs with long, straight runs. Each hip, valley, or dormer adds trim work and cutting waste. A complex roofline can add 25–40% to labor costs compared to a simple gable.
Fastener System
Exposed-fastener corrugated panels are standard and cheapest. Concealed-fastener corrugated systems cost 20–30% more but eliminate the most common leak point — rubber washer degradation around exposed screws.
Underlayment Choice
Synthetic underlayment ($0.50–$0.75/sq ft) is standard. Peel-and-stick ice-and-water shield at eaves and valleys adds $1.50–$2.50/sq ft for those areas. In snow country, code often requires it.
Existing Roof Condition
Metal can sometimes be installed over one layer of asphalt shingles using furring strips, saving $1–$3/sq ft in tear-off. If decking is rotted, replacement runs $2–$4/sq ft for new OSB or plywood.
Labor Market
Metal roofing labor runs $3–$6/sq ft depending on your market. Rural areas with fewer metal roofing specialists may charge more per square foot despite lower general cost of living.
Money-Saving Tips
- Install over existing shingles with furring strips If local code allows and you have only one shingle layer, installing corrugated panels over 1×4 furring strips eliminates tear-off labor and dump fees. The air gap also improves ventilation beneath the metal. Potential savings: $1,500–$4,000
- Choose galvanized over Galvalume for inland, dry climates Standard galvanized steel performs nearly as well as Galvalume in dry, non-coastal regions. The 15–20% upcharge for Galvalume pays off in humid or salt-air environments, but not in Denver or Phoenix. Potential savings: $1,000–$2,500
- Schedule installation in winter months Metal roofing contractors are busiest April through October. Winter scheduling (where climate allows) can net 10–15% discounts on labor. Metal panels install fine in cold weather — unlike shingles, they don't need heat to seal. Potential savings: $1,000–$3,000
- Minimize color choices per project Ordering all panels in a single color reduces waste and may qualify for bulk pricing from the panel manufacturer. Custom or low-volume colors can add $0.50–$1.00/sq ft. Potential savings: $500–$1,500
When to Splurge
- Upgrade to concealed-fastener panels Exposed screws are the #1 maintenance point on corrugated roofs — rubber washers degrade in 15–20 years, requiring re-screwing of the entire roof. Concealed-fastener panels eliminate this issue entirely. Additional cost: $1.50–$3.00 per sq ft
- Add ridge ventilation Metal roofs run hotter in summer than asphalt. A proper ridge vent system reduces attic temperatures by 20–30°F, lowering cooling costs and extending underlayment life. Additional cost: $400–$900
- Invest in factory-applied PVDF finish A Kynar/PVDF coating maintains color for 30–40 years vs. 10–15 for standard acrylic paint. On a roof that lasts 50+ years, avoiding one repainting cycle ($3,000–$6,000) makes the upfront premium pay for itself. Additional cost: $1.00–$2.00 per sq ft