Metal Roof Cost Calculator
Roof Parameters
Calculation Results
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How This Metal Roof Cost Calculator Works
Enter the building's length and width, the roof pitch, the metal and the panel style. The calculator:
- Finds the real roof area. A sloped roof has more surface than the floor it covers. The calculator multiplies length × width by a pitch factor: √(1 + (rise ÷ run)²). A 6:12 roof has a factor of 1.118, so a 40 × 30 ft footprint (1,200 sq ft) becomes 1,342 sq ft of roof.
- Prices the metal. Material cost = roof area × the panel price for the style (galvanized steel) × a factor for the metal, plus the waste % you enter (10% by default, for cuts, overlaps and trim). The result shows the waste % used.
- Prices the labor. Labor cost = roof area × the labor rate for the panel style. Standing seam takes longest to install, so it has the highest labor rate.
- Adds them up for a total installed estimate.
Rates Used in This Calculator
| Panel style | Galvanized steel material | Labor | Installed (galvanized) |
|---|---|---|---|
| Corrugated | $3.00 | $4.00 | $7.00 |
| Ribbed (exposed fastener) | $3.00 | $4.00 | $7.00 |
| Metal shingle | $4.50 | $5.50 | $10.00 |
| Standing seam | $5.50 | $7.00 | $12.50 |
Metal factors (applied to material): galvanized steel 1.0, aluminum 1.5, stainless steel 2.15, copper 3.3. For example, a copper standing seam roof uses $5.50 × 3.3 = $18.15 per sq ft for material plus $7.00 labor, about $25 per sq ft installed before waste. The table shows rates before the waste allowance, which the calculator adds to the material line.
Source: rates are set to fall inside the ranges in HomeGuide's metal roof cost guide (2026): installed $5 to $12 per sq ft for corrugated, $9 to $16 for standing seam and $6 to $14 for metal shingles; labor $4 to $8 per sq ft; installed per square (100 sq ft) $700 to $1,700 for aluminum, $1,000 to $2,100 for stainless steel and $1,300 to $3,000 for copper. Local prices vary; get several quotes.
Measure the footprint including the eave and gable overhangs, not just the walls. You can enter pitch in degrees or as a ratio (enter 6 for a 6:12 roof).
What it doesn't include: tear-off of the old roof, new decking, flashing around chimneys and skylights, permits and delivery. Those can add 10-30% (see "Why is my contractor's quote higher than the calculator?" below).
Metal Roof Cost Examples
Example 1: Budget corrugated steel roof
40 × 30 ft footprint, 6:12 pitch, galvanized steel, corrugated panels
- Roof area: 1,341.64 sq ft (13.4 squares)
- Material (with 10% waste): $4,427.41
- Labor: $5,366.56
- Total: $9,793.98 (about $7.30 per sq ft)
Example 2: Same roof in standing seam
40 × 30 ft, 6:12, galvanized steel, standing seam
- Roof area: 1,341.64 sq ft
- Material (with 10% waste): $8,116.93
- Labor: $9,391.49
- Total: $17,508.41 (about $13.05 per sq ft)
Example 3: Metric measurements
12 × 9 m footprint, 30°, galvanized steel, standing seam
- Roof area: 1,342.34 sq ft (124.7 m²)
- Material (with 10% waste): $8,121.17
- Labor: $9,396.40
- Total: $17,517.57
Example 4: Aluminum for a coastal home
40 × 30 ft, 6:12, aluminum, ribbed panels
- Roof area: 1,341.64 sq ft
- Material (with 10% waste): $6,641.12
- Labor: $5,366.56
- Total: $12,007.69 (about $8.95 per sq ft)
How Much Does a Metal Roof Cost in 2026?
Installed prices, materials and labor together, United States:
| Type | Installed cost per sq ft | Per square (100 sq ft) |
|---|---|---|
| Corrugated / exposed-fastener steel | $5-$12 | $500-$1,200 |
| Metal shingles | $6-$14 | $600-$1,400 |
| Standing seam | $9-$16 | $900-$1,600 |
| Aluminum | $7-$17 | $700-$1,700 |
| Stainless steel / zinc | $10-$21 | $1,000-$2,100 |
| Copper | $13-$30 | $1,300-$3,000 |
Labor alone is typically $4-$8 per sq ft. A 1,500 sq ft roof runs about $7,500-$24,000, a 2,000 sq ft roof $10,000-$32,000.
Source: HomeGuide, "Metal Roof Cost", updated November 2025.
Steel prices moved in 2025-2026 because of tariffs on imported steel and aluminum, so get current quotes.
Canada (CAD, installed): $13-$30 per sq ft overall. Exposed-fastener galvanized steel $13-$18, standing seam steel $18-$25, aluminum $22-$30, copper or zinc $35 and up.
Source: RenoQuotes, "Metal Roof Cost per Square Foot in Canada in 2026", May 2026.
What Goes Into a Metal Roof (Materials List)
- Panels. Ordered by the square or by the linear foot, cut to length. Exposed-fastener panels typically cover about 36 in. of width each; standing seam panels 12-18 in. Number of panels per side ≈ roof length ÷ panel coverage width, rounded up.
- Trim. Ridge cap (length of the ridge), eave/drip trim (length of the eaves), rake/gable trim (sloped edges), valley flashing, plus flashing around chimneys, vents and skylights.
- Fasteners. Exposed-fastener roofs use gasketed screws, often around 70-80 per square; follow the panel maker's fastening schedule, which depends on wind zone. Standing seam uses hidden clips.
- Underlayment. Synthetic underlayment under the panels (high-temperature types under dark metal).
- Closures and sealant at the ridge and eaves for ribbed and corrugated profiles.
Waste allowance: a simple gable roof with panels cut to length needs about 5-10% extra; hips, valleys and dormers need 10-15% because of angled cuts. The calculator adds 10% to the material line by default; change the Waste field to match your roof.
Weight: steel roofing weighs about 0.7-1.5 lb per sq ft (70-150 lb per square), far less than asphalt shingles or tile. Source: Metal Roofing Alliance via Hunker, "Metal Roof 26 vs. 29 Gauge".