How it works
Roofing is measured in "squares" of 100 square feet. There are usually three bundles of shingles per square.
Squares = Roof area × (1 + Waste%) ÷ 100
Roofing Calculator
Estimate roofing material from roof area and waste.
Estimate roofing material from roof area and waste.
Roofing is measured in "squares" of 100 square feet. There are usually three bundles of shingles per square.
Squares = Roof area × (1 + Waste%) ÷ 100