RoofRangeBaseNew roof cost calculator
Calculator label for the new-deck path — tear-off defaults off because nothing old should leave on a true first install. Enter squares, pick asphalt, metal, or flat, and read the 2026-07 band before builder allowances or subcontractor bids arrive. Asphalt mid about $500 per square and metal mid about $1,000 per square are the common planning anchors when removal is not in the job. If you are stripping an existing field, switch to the roof replacement cost calculator — modeling a redo with tear-off off will under-budget the haul and strip. This page is planning math in your browser, not a builder quote and not a lead form.
Runs in your browser No signup Estimate only — not a contractor quote
Tear-off
Remove existing roof before install
Low
$7,000
Mid
$10,000
High
$14,000
When to use — and when not to
When to use
Spreadsheet row for a new-construction roof line. Comparing asphalt versus metal on a garage or addition. Validating a builder allowance with a tool-shaped UI before you argue product grade.
When not to
Existing house redo with removal → roof replacement cost calculator. Question-shaped landing → how much does a new roof cost. Essay framing → new roof cost.
Assumptions
Tear-off off by default. Installed bands as of 2026-07 (asphalt $350 / $500 / $700, metal $700 / $1,000 / $1,400, flat $500 / $800 / $1,200). Framing, sheathing, and HVAC curb work excluded from the covering band.
Worked examples
14 squares asphalt mid, tear-off off
Mid ≈ 14 × $500 = $7,000
Addition-only roofs often land in this square range.
14 squares metal mid, tear-off off
Mid ≈ 14 × $1,000 = $14,000
Metal toggle doubles mid on the same squares in the default table.
How it calculates
new ≈ squares × material_$ (+ tearoff only if enabled)
New install calculator — covering band without removal unless you toggle tear-off.
- Enter roof squares for the new section — not whole-house footprint if only the garage is new.
- Select material; asphalt mid $500/sq is the common starting anchor.
- Leave tear-off disabled for a clean deck; enable only if old covering actually leaves.
- Compare mid to subcontractor quotes that list $/square and product grade.
Common traps
- Modeling garage only — enter garage squares, not the whole house.
- Builder allowances may assume low band — verify product grade in writing.
- Accidental tear-off off on a redo under-budgets — match the job story.
- Ventilation redesign and ridge detail upgrades are not in the field band.
Next tool
Essay page → new roof cost.
Question URL → how much does a new roof cost.
Redo calculator → roof replacement cost calculator.
FAQ
Enter garage roof squares alone — a 4-square garage at asphalt mid about $2,000 in the 2026-07 table. Mixing house squares inflates a garage-only budget line and makes builder talks noisier than they need to be.