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Roofing Materials for a 30×20 House
About 8.7 squares (866 ft² roof surface (pitch factor 1.118)).
Roofing Materials for a 30×20 House
Roofing squares866 ft² roof surface (pitch factor 1.118)
Shingle bundles (3 per square)
26
Underlayment rolls (~10 squares each, synthetic)
1
Roof area (m²)
80.4
Gable roof estimate. Add for hips, valleys, dormers and starter/ridge caps (about 10–15% more on complex roofs).
Planning estimates only. Building codes, loads and material specs vary — have a licensed engineer or contractor confirm quantities and safety requirements. Disclaimer
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