Calculate roof area, squares, and shingle bundles needed for your roofing project.
| Pitch | Angle | Slope Factor | Category |
|---|---|---|---|
| 2/12 | 9.5° | 1.0138 | Low Slope |
| 3/12 | 14.0° | 1.0308 | Low Slope |
| 4/12 | 18.4° | 1.0541 | Moderate |
| 5/12 | 22.6° | 1.0833 | Moderate |
| 6/12 | 26.6° | 1.1180 | Moderate |
| 7/12 | 30.3° | 1.1577 | Moderate |
| 8/12 | 33.7° | 1.2019 | Moderate |
| 9/12 | 36.9° | 1.2500 | Steep |
| 10/12 | 39.8° | 1.3017 | Steep |
| 12/12 | 45.0° | 1.4142 | Steep |
| Material | Amount |
|---|---|
| 3-tab shingles | 3 bundles |
| Architectural shingles | 3 bundles |
| Hip & ridge cap | 1 bundle per 35 LF |
| Roofing nails | 2–2.5 lbs |
| Underlayment | 1 roll per 4 squares |
| Ice & water shield | 1 roll per 2 squares |