Roofing
Quick Reference
| Shingle type | Strips/bundle | Coverage | Bundles/square |
|---|---|---|---|
| 3-tab asphalt | 26 | 33.3 ft² | 3 |
| Architectural standard | 21 | 33.3 ft² | 3 |
| Architectural heavy | 17 | 25 ft² | 4 |
| Designer / luxury | 14 | 20 ft² | 5 |
Bundles needed = ceil(roof_area_ft² ÷ ft²_per_bundle × 1.10). The 10% adds waste for hips, valleys, ridges, and starter courses.
15 squares × 3 bundles = 45 bundles + 10% waste = 50 bundles.
24 squares × 3 bundles = 72 bundles + 10% waste = 80 bundles.
Related questions
Architectural at 33.3 ft²/bundle: 60 bundles + 10% waste = 66 bundles. 3-tab at the same coverage: identical count.
Most bundles weigh 60–80 lb. Heavyweight architectural can reach 100 lb. Roofers prefer the lighter ones.
Standard 3-tab: $25–$35 per bundle. Architectural: $30–$45. Designer: $50–$80+. Prices vary widely by region and brand.
No — always use one shingle type and color for the entire roof to avoid visible patterns and to maintain warranty validity.
More answers
How Many Bundles Are in a Square of Shingles?
Most asphalt shingles use 3 bundles per square (100 ft² of roof). Heavier architectural shingles can use 4 bundles per square; very lightweight 3-tab shingles sometimes need 4 to match the same area.
How Many Square Feet Are in a Bundle of Shingles?
A bundle of asphalt shingles covers about 33.3 square feet — three bundles make one roofing square (100 ft²).
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Open calculatorWritten and maintained by the BuildMaterialCalc editorial team. The math is derived from published codes and manufacturer specs — see our methodology page for the full source list and review process.
Last reviewed: 9 May 2026. We update cost references quarterly using the Bureau of Labor Statistics Producer Price Index plus regional supplier spot-checks.
References used on this page:
Every result is an estimate. Real-world projects vary with sub-grade conditions, ambient humidity, supplier spec sheets, and local code amendments. For structural, code, or safety-critical applications, confirm with a licensed professional. See our full disclaimer for details.