Plumb Roof Pro: Roofing Calc

Read a roof's pitch from the ground with your camera, take off the material, and export a branded PDF before you leave the driveway. Offline. No subscription.

MEASURE THE ROOF, SIZE THE JOB, KEEP THE RECORD.

Plumb Roof Pro is a focused roofing calculator — read the pitch, take off the material, and keep every number with the job. No paper pad, no second app, no account.

MEASURE THE PITCH • Pitch gauge — lay the phone on the deck or hold it to a rafter for the angle in degrees and inches-per-foot, with a haptic lock when the reading settles. • Pitch from a photo — shoot the gable end square-on from the ground, drag a line onto the slope, and read the pitch without climbing.

TAKE OFF THE ROOF • Tape measure — log every run (eave, rake, ridge, hip, valley) on the fast fraction keypad; it totals the linear feet and can seed the material list. • Material calculator — plan area, pitch, and waste in; squares, shingle bundles, underlayment, ice-and-water, starter, ridge and hip cap, drip edge, and nails out. Coverage and waste presets are editable, and any count can be overridden.

CHECK THE DETAILS • Ventilation — attic area with a 1:150 or 1:300 ratio gives required net free area, balanced intake and exhaust, ridge-vent feet, and soffit count. • Rafter — run, pitch, and overhang give common and hip/valley rafter lengths, with the pitch, angle, and slope factor shown together. • Plumb bob — a true vertical for a chimney, parapet, or wall.

KEEP THE JOB • Every reading saves to an on-device job ledger — search it, pin it, reopen it. • Export a clean, branded PDF or PNG, or a .plumb backup, when you choose to. • English and Spanish, in the app and in the exports.

Free to try for 14 days, then a one-time unlock — no subscription, no ads, no account. Your jobs stay on the device and leave only when you share or export them.

A note on accuracy: phone-sensor and photo measurements are a fast field reference, not an engineering or code determination. Confirm structural, ventilation, nailing, and safety-critical numbers with calibrated tools and current local code.