How many shingles for a 12×12 shed?
Quick Answer
A 12×12 shed (144 sq ft footprint) with a standard gable roof at 4/12 pitch needs approximately 3–4 bundles of shingles. The actual roof area is larger than the footprint: at 4/12 pitch, multiply by 1.054, giving about 152 sq ft of roof area = 1.5 squares = ~5 bundles. Add 10% waste.
Quick Reference Table
| Roof pitch | Shingle bundles for 12×12 shed |
|---|---|
| 3/12 pitch (low) | ~4 bundles (1.3 squares) |
| 4/12 pitch | ~5 bundles (1.6 squares) |
| 6/12 pitch | ~6 bundles (2.0 squares) |
| 8/12 pitch (steep) | ~7 bundles (2.3 squares) |
How to Calculate It Yourself
- 1
Footprint area: 12 × 12 = 144 sq ft (both slopes together).
- 2
Apply pitch multiplier for 4/12 pitch: 144 × 1.054 = 151.8 sq ft.
- 3
Convert to roofing squares: 151.8 ÷ 100 = 1.52 squares.
- 4
Multiply by 3 bundles/square: 1.52 × 3 = 4.56 → 5 bundles.
- 5
Add 10% for ridge, starter, and waste: 5 × 1.10 = 5.5 → 6 bundles to be safe.
Pro Tip
Don't forget the ridge cap — a 12×12 shed gable has about 12 linear feet of ridge, requiring 1 bundle of ridge cap shingles (covers ~20 linear feet).
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