Shingle Calculator: How Many Bundles Do You Need for Your Roof?
Calculate exactly how many shingle bundles your roof needs. Includes GAF, Owens Corning, and CertainTeed pricing.
How to Calculate Shingle Bundles
Take your roof area in squares, multiply by 3 bundles per square, then add your waste factor. A 22-square roof with 15% waste: 22 x 1.15 = 25.3 squares. At 3 bundles per square, that is 76 bundles.
2026 Shingle Pricing Guide
GAF Timberline HDZ (Architectural, Lifetime Warranty): $35-40 per bundle at Home Depot. Most popular shingle in America. 130 MPH wind rating.
Owens Corning TruDef Duration (Architectural, Lifetime Warranty): $45-50 per bundle. SureNail technology. 130 MPH rating.
Owens Corning Oakridge (Architectural): $35-40 per bundle. Budget-friendly architectural option.
CertainTeed Landmark (Architectural, Lifetime Warranty): $38-43 per bundle at Lowes. 110 MPH rating.
CertainTeed Landmark PRO (Premium): $47-52 per bundle. 130 MPH wind resistance.
Bulk Pricing Saves Money
Most suppliers offer bulk pricing at 36+ bundles (12 squares). The discount is typically 10% off per-bundle price. On a 25-square roof, that saves $200-$400.
Do Not Forget Accessories
A complete roofing job also needs: ice and water shield, synthetic underlayment, drip edge, ridge vent, hip and ridge caps, flashing, and nails. Accessories add 15-25% to material cost.
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