Roofing Estimator

What it does

• +You give it the flat footprint and the pitch. It applies the real pitch multiplier before anything else, so a 6/12 roof is costed 11.8% bigger than the ground it covers and a 12/12 is 41.4% bigger.
• +It shows you that multiplier live as you type the pitch, before you even submit.
• +Squares are rounded up the way you actually order them, with your waste allowance applied.
• +Tile, clay, architectural shingle, three-tab and standing seam are each priced separately. The tool will not let a shingle rate end up on a tile roof.
• +Underlayment comes out in rolls at the coverage of the type you picked, so number thirty felt and synthetic give you different roll counts off the same roof.
• +Ridge and hip cap, drip edge in ten foot sticks, and valley flashing are added from the linear footage you give it, and left off entirely if you do not.
• +Tear-off is priced per square per layer, against the real roof area with no waste factor, because you tear off what is there and not more.
• +Every line has a 'show working' link with the arithmetic behind it.

A day with it

1. 01A 2,400 square foot single story, 6/12, concrete tile, one layer coming off.
2. 02You type the pitch and watch the multiplier come up: the real roof is 2,683 square feet, not 2,400.
3. 03You add 110 feet of ridge and hip, 220 of eave and rake, 48 of valley.
4. 04Out comes the tear-off, the squares, the felt rolls, the cap, the drip edge and the valley metal, each with its working shown.
5. 05You copy it into an email to the supplier and a summary to the homeowner.

What it does not do

Printed here before you pay rather than discovered afterwards.

• It does not read a plan or a satellite image. You give it the footprint, the pitch and the linear footage; it does the roofing math.
• One pitch per estimate. A roof with two genuinely different pitches should be run as two estimates and added together.
• The rates are defensible starting defaults, not a specific supplier's or a specific market's. Tile pricing in particular swings hard between a tract job and a custom one, so calibrate against a job you already priced before trusting it on a bid.
• Flashing at walls, chimneys, skylights and penetrations is not counted. Add those separately.

How it is priced

$69.00/mo, flat. FLAT monthly: estimate every roof you bid for one predictable price. Same reasoning as the drywall estimator — never charge per bid.

Your first 2 tool activations on a new account are free, so you can run this one for real before deciding. There is no contract and no cancellation fee.

Works with