Estimated installed cost
$8,186 – $12,279$8,186$8,186–$12,279$12,279
20.5 squares of architectural asphalt shingles · national average prices
Roof area1,860 sq ft1,860 sq ft1,860 sq ft6/12 pitch, before waste
Squares to order20.5 sq20.5 sq20.5 sq62 bundles · 10% waste
Cost per square$400 – $600$400$400–$600$600All-in
Key takeaways- Standing-seam metal costs about 2.5× architectural asphalt shingles for this roof (midpoint $25,581 vs $10,232).
- The 6/12 pitch adds 12% to the roof surface compared with the flat footprint plus overhang.
Cost breakdown
- Architectural asphalt shingles, installed (20.46 squares)Contractor price ranges, adjusted for your local cost level.$8,186 – $12,279
Installed cost by material
Detailed numbers
Installed cost by material (this roof)| Material | Installed total | Per square |
|---|
| 3-tab asphalt shingles | $6,139 – $10,232 | $300 – $500 |
|---|
| Architectural asphalt shingles | $8,186 – $12,279 | $400 – $600 |
|---|
| Standing-seam metal | $18,418 – $32,743 | $900 – $1,600 |
|---|
| Clay or concrete tile | $14,325 – $51,161 | $700 – $2,500 |
|---|
Includes removal of one existing layer.
Show the math
- Plan area with 12 in overhang = (50 + 2) × (30 + 2) = 1,664 sq ft
- Pitch factor for 6/12 = √(1 + (6/12)²) = 1.118
- Roof area = 1,664 × 1.118 = 1,860.4 sq ft
- + 10% waste = 2,046.4 sq ft = 20.46 squares
- Bundles = 20.46 squares × 3 = 61.39 → 62 bundles
- Underlayment = 2,046.4 ÷ 1000 sq ft per roll → 3 rolls
- Installed = 20.46 squares × $400–$600 × region 1 = $8,186 – $12,279
- Removal of one existing layer is included in the installed price
- Total = $8,186 – $12,279