Estimates the number of shingle bundles needed for a roof, based on roof area and shingle coverage.
Start with your values, or try a preset.
Enter Roof Length (feet), Roof Width (feet), Shingle Coverage per Bundle (square feet), and Waste Factor (%) in the units shown.
Read Roof Area (square feet), Adjusted Roof Area (including waste) (square feet), Number of Shingle Bundles Needed, and Number of Shingle Bundles Needed (Rounded Up) in the results panel. Results update as you change the inputs.
Choose a preset to load an example, then adjust the values for your situation.
See the inputs and their calculated results.
Roof Length (feet): 10 ft; Roof Width (feet): 10 ft; Shingle Coverage per Bundle (square feet): 100 sq ft; Waste Factor (%): 10 %
Roof Area (square feet): 100 sq ft; Adjusted Roof Area (including waste) (square feet): 110 sq ft; Number of Shingle Bundles Needed: 1.1 bundles; Number of Shingle Bundles Needed (Rounded Up): 2 bundles
Roof Length (feet): 24 ft; Roof Width (feet): 24 ft; Shingle Coverage per Bundle (square feet): 100 sq ft; Waste Factor (%): 10 %
Roof Area (square feet): 576 sq ft; Adjusted Roof Area (including waste) (square feet): 633.6 sq ft; Number of Shingle Bundles Needed: 6.336 bundles; Number of Shingle Bundles Needed (Rounded Up): 7 bundles
Roof Length (feet): 30 ft; Roof Width (feet): 25 ft; Shingle Coverage per Bundle (square feet): 100 sq ft; Waste Factor (%): 10 %
Roof Area (square feet): 750 sq ft; Adjusted Roof Area (including waste) (square feet): 825 sq ft; Number of Shingle Bundles Needed: 8.25 bundles; Number of Shingle Bundles Needed (Rounded Up): 9 bundles
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