Roofing Estimate Calculator: bid by the square, tear-off included
Bid roofing by the square: tear-off, underlayment, shingles, and flashing, plus the steep and story charges and disposal a real roof carries.
A roofing bid lives or dies on the squares and the things that ride on top of them. Waste on a cut-up roof is real, the tear-off and dumpster are real, and the steep two-story job is not the same labor as a ranch. Anvil HUD bids by the square: shingles, underlayment, and flashing each a line with a waste allowance, tear-off and disposal priced out, and steep or story charges as their own lines. A contingency covers the rotten decking nobody sees until the old roof is off, then overhead and profit finish it.
How we price roofing
- Roofs price by the square (one hundred square feet). Each layer is a line item: shingles, underlayment, and flashing by the square with a waste allowance for cuts, hips, and valleys.
- Tear-off and disposal are their own lines, and the dumpster is not optional. Steep pitch and multiple stories add labor, so they ride as their own charges, not a vague bump.
- A contingency covers the decking you find rotten once the old roof is off, then overhead and profit set the bid.
Every line is published at the math. No black box. The engine is free; you only sign in to save your work.
Questions
How do I bid a roofing job?▾
Measure the roof in squares (one hundred square feet each), and price shingles, underlayment, and flashing per square with a waste allowance for hips, valleys, and cuts. Add tear-off, the dumpster, and any steep or story charges, a contingency for bad decking, then overhead and profit. Anvil HUD does the build-up.
How much waste should I add for a roof?▾
It depends on the roof. A simple gable wastes little; a roof full of hips, valleys, and dormers wastes a lot more. Pricing waste per material line, plus a contingency for decking you cannot see, keeps the surprises off your profit. Anvil HUD carries both.
Is the calculator free?▾
Yes. Pricing the bid is free. Pro unlocks the proposal export, the dashboards, the jobs log, and inventory.
Know your craft.
Build your roofing bid on your real numbers, free. Sign in to save projects and export a client-ready proposal.