Shingles for a 1,800 sq ft footprint by pitch
| Pitch | Roof area | Squares (+10%) | Bundles, gable (+10%) | Bundles, hip (+15%) |
|---|---|---|---|---|
| 4/12 | 1,897 sq ft | 20.9 | 63 | 66 |
| 5/12 | 1,949 sq ft | 21.4 | 65 | 68 |
| 6/12 | 2,012 sq ft | 22.1 | 67 | 70 |
| 7/12 | 2,084 sq ft | 22.9 | 69 | 72 |
| 8/12 | 2,164 sq ft | 23.8 | 72 | 75 |
| 9/12 | 2,250 sq ft | 24.8 | 75 | 78 |
| 10/12 | 2,344 sq ft | 25.8 | 78 | 81 |
| 11/12 | 2,443 sq ft | 26.9 | 81 | 85 |
| 12/12 | 2,545 sq ft | 28 | 84 | 88 |
Other materials
- Synthetic underlayment: about 3 rolls at 10 squares per roll (more on low slopes that need double coverage).
- Starter strip and ridge cap: sold separately; their quantity depends on eave and ridge length.
- Roofing nails: typically 4 per shingle, or 6 in high-wind areas — follow the shingle wrapper.
Footprint is not living area. A two-story 3,600 sq ft home could have a 1,800 sq ft footprint. Include an attached garage and covered porches if they share the roof.
The math (6/12 pitch)
1,800 sq ft × 1.118 = 2,012 sq ft of roof
÷ 100 × 1.10 = 22.14 squares
× 3 bundles/square = 67 bundles (rounded up)
Common questions
How many bundles of shingles for a 1,800 sq ft roof?
About 67 bundles for a 6/12 gable roof over a 1,800 sq ft footprint, including 10% waste.
How many squares is a 1,800 sq ft house?
22.1 squares at a 6/12 pitch with 10% waste (20.1 squares exactly).
Want the full method, tips and other sizes? See the roofing calculator guide.