Total Panels
93
Roof Area
1,342 sq ft
Estimated Cost
$6,641
Common pitches: 4:12 (moderate), 6:12 (standard), 8:12 (steep)
Typical: 10% for simple roofs, 15-20% for complex shapes
Get free quotes from licensed roofers near you
We may earn a commission when you request quotes, at no extra cost to you.
Showing results for your area
Get free quotes from licensed roofers near you
We may earn a commission when you request quotes, at no extra cost to you.
Showing results for your area
As an Amazon Associate, we earn from qualifying purchases.
Price as of Jul 24, 2026. Product prices and availability are accurate as of the date indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
Inputs
Result
Area = 40 × 30 × 1.118 = 1,341.6 sq ft. With waste: 1,475.8 sq ft. Panel area = 1.33 × 12 = 16 sq ft. Panels = ⌈1,475.8 / 16⌉ = 93. Cost = 1,475.8 × $4.50 = $6,641.
Inputs
Result
Area = 60 × 30 × 1.054 = 1,897.4 sq ft. With waste: 2,087.1 sq ft. Panel area = 2 × 12 = 24 sq ft. Panels = ⌈2,087.1 / 24⌉ = 87. Cost = 2,087.1 × $2.50 = $5,218.
Calculate roof area with pitch (L × W × pitch multiplier), add 10% waste, then divide by panel coverage area (panel width × panel length). For a 1,200 sq ft roof with 16" standing seam panels at 12 ft long: 1,320 sq ft / (1.33 × 12) = 83 panels.
Metal roofing costs $2.50-$8.00 per square foot for materials. Corrugated: $2.50-4.00/sq ft, Ribbed/R-Panel: $3.00-4.50/sq ft, Standing seam: $4.50-8.00/sq ft. Installation adds $3-7/sq ft for labor.
| Panel Type | Material Cost/sq ft | Installed Cost/sq ft | Best For |
|---|---|---|---|
| Corrugated | $2.50–$4.00 | $5.50–$11.00 | Barns, sheds, budget projects |
| Ribbed/R-Panel | $3.00–$4.50 | $6.00–$11.50 | Commercial, agricultural |
| Standing Seam | $4.50–$8.00 | $7.50–$15.00 | Residential, modern homes |
Use approximately 80 screws per 100 sq ft of metal roofing. Each panel typically needs screws every 12-24 inches along each rib, plus additional screws at overlaps, eaves, and ridge. Budget 80 screws per panel as a safe estimate.
Metal roofing lasts 40-70 years depending on material. Corrugated steel: 40-60 years, Standing seam: 50-70 years, Aluminum: 50+ years, Copper: 70-100+ years. Far outlasts asphalt shingles at 15-30 years.
| Material | Lifespan | Rust Risk | Cost Level |
|---|---|---|---|
| Corrugated Steel | 40–60 years | Moderate (needs coating) | Low |
| Standing Seam Steel | 50–70 years | Low (hidden fasteners) | Medium |
| Aluminum | 50+ years | None | Medium–High |
| Copper | 70–100+ years | None (develops patina) | High |
Read our guide
Read our guide
Read our guide
General roofing calculator
Calculate roof pitch
Calculate shingle bundles
Calculate materials for your building projects
Last Updated: Jul 24, 2026
This calculator is provided for informational and educational purposes only. Results are estimates and should not be considered professional financial, medical, legal, or other advice. Always consult a qualified professional before making important decisions. UseCalcPro is not responsible for any actions taken based on calculator results.
