Roof Shingle Calculator

Asphalt shingles are ordered by the square (100 sq ft of roof area) and by bundles (often 3 bundles per square). Start with roof area from the RoofCalcNow calculator, then add waste (commonly 10-15%).

Starter strips & ridge

Budget extra material for starter course, hip/ridge caps, and valleys. Steep pitches and complex roofs need more waste.