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Roofing Materials for a 40×30 House
About 16.5 squares (1,653 ft² roof surface (pitch factor 1.118)).
Roofing Materials for a 40×30 House
Roofing squares1,653 ft² roof surface (pitch factor 1.118)
Shingle bundles (3 per square)
50
Underlayment rolls (~10 squares each, synthetic)
2
Roof area (m²)
153.6
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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