Roofing · Area and material workbench
Measure the planes. Build the order.
Use pitch or angle, overhang, coverage, waste, and pricing to turn a simple roof plan into transparent package quantities.

1 Measure the roof plan
2 Set pitch and allowance
3 Enter product coverage and cost
Results update automatically · slope multiplier 1.118
Method and limitations
Plan area × slope factor × allowance, then whole packages.
One roofing square equals 100 square feet. Shingle bundles and underlayment rolls round up independently from editable manufacturer coverage. Complex roof geometry requires field measurement.