| Item | Quantity | Notes |
|---|---|---|
| Calculated Flat Area | - sq ft | Footprint area before pitch |
| Total Roof Surface Area | - sq ft | Actual shingleable area (incl. waste) |
| Number of Roofing Squares | - | 1 square = 100 sq ft |
| Shingle Bundles (Asphalt) | - bundles | Approx. 3 bundles/square |
| Synthetic Underlayment Rolls | - rolls | Approx. 10 squares (1000 sq ft)/roll |
| Starter Shingle Bundles | - bundles | Approx. 100 linear ft/bundle |
| Ridge/Hip Cap Shingle Bundles | - bundles | Approx. 33 linear ft/bundle (varies) |
| Roofing Nails | - lbs | Approx. 2.5 lbs/square |
Disclaimer: This tool provides estimates for material planning purposes only. Actual material needs may vary based on specific roof complexity, material type, local building codes, and installation practices. Always consult with a professional roofer and verify quantities with your supplier.
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