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How much roofing for a 3,500 sq ft house with 8/12 pitch?

Answer
46.3 squares (139 bundles)
Actual roof area: 4,628 sq ft (with pitch)Includes 10% waste factorEstimated shingle cost: $4,865–$7,645

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How We Calculated This

Squares = (Footprint × Pitch Multiplier × 1.10) / 100

3,500 × pitch factor × 1.10 = 4,628 sq ft. Squares = 46.3. Bundles = 139.

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Calculated using verified formulas. Last updated March 2026.