Shingles are sold by the bundle but priced and estimated by the square (100 sq ft of roof). Here is how the two connect, how much a bundle covers for each shingle type and how to turn your roof size into a real order.
Bundles per square by shingle type
| Shingle type | Bundles per square | Coverage per bundle | Typical bundle weight |
|---|---|---|---|
| 3-tab | 3 | ≈33.3 sq ft | about 50 to 70 lb |
| Architectural (laminated) | 3 (some 4) | ≈33.3 sq ft (or 25) | about 60 to 80 lb |
| Designer / luxury | 4 to 5 | 20 to 25 sq ft | heavier |
| Starter strip | by length | about 100 to 120 linear ft | |
| Hip and ridge cap | by length | about 20 to 35 linear ft |
The wrapper always lists the exact coverage. Trust it over any rule of thumb.
How many bundles for common roof sizes
At 3 bundles per square:
| Roof area | Squares | Bundles (no waste) | With 10% waste | With 15% waste |
|---|---|---|---|---|
| 1,000 sq ft | 10 | 30 | 33 | 35 |
| 1,500 sq ft | 15 | 45 | 50 | 52 |
| 2,000 sq ft | 20 | 60 | 66 | 69 |
| 2,500 sq ft | 25 | 75 | 83 | 87 |
| 3,000 sq ft | 30 | 90 | 99 | 104 |
Always round up to a whole bundle. A leftover bundle is useful for future repairs from the same color batch.
Worked example: from house to bundles
A 40 × 30 ft house, 12 inch overhang, 6/12 pitch, gable roof:
- Footprint with overhang: 42 × 32 = 1,344 sq ft
- Roof area: 1,344 × 1.118 = 1,503 sq ft
- With 10% waste: 1,653 sq ft = 16.53 squares
- Bundles: 16.53 × 3 = 49.6, so 50 bundles
- Ridge cap: 42 ft of ridge at about 33 ft per bundle, so 2 bundles
- Starter: eaves and rakes ≈ 156 ft, so about 2 bundles of starter strip
Open this example and change the shingle type to see premium shingles at 4 bundles per square.
Pallet math
If your supplier ships 42 bundles per pallet, a 2,000 sq ft roof with 10% waste (66 bundles) needs about 1.6 pallets. You will get one full pallet plus loose bundles. Check two things before delivery:
- Weight. A pallet of architectural shingles can weigh around 3,000 lb or more. Plan where the truck can set it down.
- Roof loading. Spread bundles across the roof near the ridge instead of stacking them in one spot.
Mistakes to avoid
- Ordering by house square footage. A 2,000 sq ft two-story home may have only about 1,100 to 1,300 sq ft of roof. Measure the roof, not the floor plan.
- Skipping waste. Cuts at rakes, valleys and hips use real shingles. 10% for simple roofs, 15% for hip or cut-up roofs.
- Forgetting the pitch. A 6/12 roof has 11.8% more area than its footprint. See the pitch angle chart.
- Assuming 3 bundles for every product. Read the wrapper.
Ready to price it? Turn squares into dollars with the average roof replacement cost guide, and pick the right underlayment in roofing underlayment types.