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Roofing Geometry materials and measuring setup

Roofing
Geometry

Calculate shingle bundles and roofing squares, then resolve roof pitch, slope angle, and common-rafter length.

Measure the roof

Shingle takeoff uses measured sloped planes and product-specific bundle coverage. Pitch and rafter tools expose the underlying right triangle while keeping structural design outside the estimate.

24Roof pitchConvert any measured vertical rise and horizontal run into the four roof-slope formats used for geometry and material planning.25Rafter lengthFind the geometric line length from ridge to wall and fascia while keeping half-span, ridge deduction, pitch, and overhang visible.26Roof shinglesCalculate shingle bundles from actual roof-plane dimensions, an editable waste factor, and the coverage printed on your selected product.27Metal roofingPlan metal roof panels by installed coverage width and slope length—not by square footage alone.49Gambrel roofResolve both gambrel slopes independently before calculating the full roof surface area.

Measure before you order

Use the project workflow, then open the calculator for each material stage.

Measure a project before calculating materialsA practical field workflow for area, volume, openings, depth, waste, and package coverage.Measure roof pitch, area, shingles, and panelsTurn safe roof measurements into plane area, squares, bundles, panels, and geometric rafter length.