RoofCalcWorks

Roof Replacement Cost Calculator

How much does it cost to replace a roof? Get an estimated replacement cost range covering materials, labor, tear-off and disposal — shown as a planning range, not a quote.

Inputs

Estimated Replacement Cost

Enter your roof area, then press Estimate.

What Drives Roof Replacement Cost

Replacing a roof costs more than a new install on fresh construction because the old roof must be torn off and hauled away. The biggest drivers are roof size (in squares), the material you choose, roof steepness and the number of stories — multi-story homes cost more per square because of staging and safety overhead.

Cost Structure

Worked Example

A 1,677 sq ft single-story home with asphalt shingles and 10% waste ≈ 18.4 squares. Including tear-off and disposal, expect a planning range of roughly $9,000–$16,000. A standing-seam metal roof on the same house runs roughly double.

What You Need

Your roof area, the roofing material you want, and how many stories your home has — a two-story home usually adds labor and access cost. Tear-off and disposal are already included in the estimate, so you don't need to add them separately.

Assumptions & Limitations

Price ranges are national averages derived from Angi (2026) and cross-checked against Fixr (2026), refreshed quarterly. Excludes decking repairs, permits, skylights, chimneys and structural work. This estimate is not a contractor quote.

Frequently Asked Questions

How long does a roof replacement take?

Most single-family asphalt shingle roofs are replaced in 1–3 days by a professional crew, weather permitting.

Is it cheaper to replace a roof in winter?

Some contractors offer off-season discounts, but cold weather can affect shingle installation. Balance savings against installation quality.

Related Calculators

Sources & Methodology

Price dataset p1-data-1 (US national average, reviewed quarterly). HomeAdvisor is not cited as an independent source because it belongs to the same company as Angi.

Formulas, assumptions and rounding rules: Methodology · Last updated: September 2026 · Calculation Engine: p1-v1 · Published by the RoofCalcWorks Editorial Team.