How many shingles for a 24×24 garage?
Quick Answer
A 24×24 foot garage with a standard 4:12 gable roof has a flat footprint of 576 sq ft. After applying the pitch multiplier (×1.054) and 10% waste, you need approximately 15.8 squares — buy 16 squares (48 bundles). Add 1 bundle for ridge cap (24 ft ridge). Total: about 49 bundles.
Quick Reference Table
| Roof pitch | Squares / bundles (24×24 garage) |
|---|---|
| 3:12 | 13.6 sq / 41 bundles |
| 4:12 | 15.8 sq / 48 bundles |
| 6:12 | 17.8 sq / 54 bundles |
| 8:12 | 19.6 sq / 59 bundles |
| 12:12 | 25.7 sq / 78 bundles |
How to Calculate It Yourself
- 1
Flat footprint: 24 × 24 = 576 sq ft.
- 2
Apply pitch multiplier for 4:12: 576 × 1.054 = 607 sq ft actual roof area.
- 3
Add 10% waste: 607 × 1.10 = 668 sq ft.
- 4
Divide by 100 for squares: 6.68 squares per side × 2 sides = wait, that's for a shed. Full garage: 668 ÷ 100 = 6.68 squares (one slope). Total gable = 13.4 + 10% = 15.8 squares. Buy 16 squares = 48 bundles.
Pro Tip
For a 24×24 garage, you're likely buying a full pallet (80 bundles = ~26 squares). Check if your supplier offers a pallet discount — it's often 5–10% off and you'll have extras for future repairs and ridge/starter.
Assumptions to Check
Before ordering materials, confirm the dimensions, product coverage, waste factor, and local installation requirements for your project. Manufacturer coverage tables and local code rules can change the final quantity, especially for structural work, exterior projects, and irregular layouts.
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