Roofing Calculator

Roofing assistant

Describe your roof in your own words and the assistant builds the estimate for you.

Guided assistant

House length (ft) House width (ft) Eave overhang (in)

Measure the outside walls. The footprint of a two-story house is the ground floor only, not the total living area.

Pitch (rise per 12″ run) Stories

Color

Existing roof Replace deck sheets (4′×8′)

Full ice and water shield on the whole deck (eaves and valleys are always included)

Rotten plywood or OSB is found only after tear-off; most roofs need 0–10 sheets.

Drip edge (lin ft) Ridge vent (lin ft) Gutters Gutters (lin ft) Downspouts (lin ft) Chimney flashing (pcs) Skylight reflash (pcs) Pipe boots (pcs)

Permit and inspection allowance

Lengths fill in automatically from the size in step 2 until you type your own.

Installed estimate

$0.00