Quick Answer
3 bundles = 1 square (100 sq ft)
This applies to most standard 3-tab and architectural asphalt shingles. Premium and specialty shingles may require 4-5 bundles per square. Always check the bundle coverage listed on the packaging.
Bundles Per Square by Shingle Type
| Shingle Type | Bundles/Sq | Sq Ft/Bundle | Weight/Bundle |
|---|---|---|---|
| 3-Tab Standard | 3 | 33.3 sq ft | 50-65 lbs |
| Architectural Standard | 3 | 33.3 sq ft | 65-80 lbs |
| Architectural Heavy | 4 | 25 sq ft | 70-85 lbs |
| Luxury / Designer | 4-5 | 20-25 sq ft | 75-100 lbs |
| GAF Timberline HDZ | 3 | 33.3 sq ft | 70 lbs |
| GAF Grand Sequoia | 4 | 25 sq ft | 85 lbs |
| OC Duration | 3 | 33.3 sq ft | 74 lbs |
| CertainTeed Landmark | 3 | 33.3 sq ft | 72 lbs |
| CertainTeed Grand Manor | 5 | 20 sq ft | 90 lbs |
| Hip & Ridge Cap | Varies | 20-35 lin ft | 30-50 lbs |
| Starter Strip | Varies | 100-120 lin ft | 20-30 lbs |
What Is a Roofing Square?
A roofing square is a unit of measurement used by the roofing industry. One square equals 100 square feet of roof area. Roofing materials, labor, and cost estimates are all based on squares.
For example, if your roof is 2,400 square feet, that is 24 squares. At 3 bundles per square, you would need 72 bundles of shingles (before adding waste).
To determine your roof size in squares, you first need to measure your roof area, then divide by 100.
How to Calculate Bundles Needed
Total Bundles = (Roof Area ÷ 100) × Bundles per Square × (1 + Waste %)
Example Calculation
2,000 sq ft roof with architectural shingles (3/sq) and 10% waste:
Squares: 2,000 ÷ 100 = 20 squares
Base bundles: 20 × 3 = 60 bundles
With 10% waste: 60 × 1.10 = 66 bundles
Skip the math and use our shingle calculator to get exact bundle counts based on your roof dimensions, pitch, and shingle type.
Shingle Bundle Estimator
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Bundles needed
Adding Waste Factor
You always need more shingles than the bare area calculation suggests. Shingles are cut at ridges, hips, valleys, and around roof penetrations. These cuts create waste that must be factored into your order.
- 10% Simple gable roof
- 12-15% Hip roof
- 15-20% Complex roof (dormers, valleys, skylights)
Pro Tip
Always round up to the next full bundle. It is far better to have a few leftover bundles (which you can keep for future repairs) than to run short and delay your project.
Common Roof Sizes Quick Reference
Bundle estimates for common roof sizes using standard 3-bundles-per-square shingles with 10% waste:
| Roof Size (sq ft) | Squares | Bundles (3/sq) | + 10% waste |
|---|---|---|---|
| 1,000 | 10 | 30 | 33 |
| 1,500 | 15 | 45 | 50 |
| 2,000 | 20 | 60 | 66 |
| 2,500 | 25 | 75 | 83 |
| 3,000 | 30 | 90 | 99 |
| 3,500 | 35 | 105 | 116 |
| 4,000 | 40 | 120 | 132 |
| 5,000 | 50 | 150 | 165 |