Roofing Calculators

Convert roof measurements into orderable bundles, rolls, pieces, and a direct PDF material order artifact

Calculate self-adhering membrane for eaves and valleys per IRC R905.1.2

Calculate synthetic or felt underlayment rolls for full roof coverage

Calculate ridge cap bundles for hip and ridge lines per IRC R905.2

Calculate valley metal coverage for open and closed valley intersections

Calculate step flashing pieces for roof-to-wall intersections per IRC R905.2.8.3

Calculate drip edge sections for eaves and rakes per IRC R905.2.8.5

Calculate net free ventilation area for attic intake and exhaust per IRC R806

Calculate starter strip material for eave and rake perimeters per IRC R905.2.8.1

Calculate replacement vent pipe flashing by size per IRC R903.1