Roofing Cost Calculator

Roof replacement cost factors

Roofing cost is shaped by roof size, slope, number of layers, material, flashing details, ventilation, and decking condition. Steeper or more complex roofs take longer and are typically more expensive.

Roofing material choices

Asphalt shingles are widely used and usually lower cost. Metal roofing has a higher upfront price but can offer long service life. Premium materials vary widely by region and product.

Why quotes vary

Roofing quotes may differ because contractors include different underlayment, flashing, ventilation, warranties, disposal, and repair allowances. Compare scopes carefully, not just totals.

Cost by major choices

These rows are directional estimates based on the calculator defaults, not fixed quotes. Use them to see which selections move the budget most.

What to ask before you budget

• Get at least two or three local quotes using the same project scope.
• Ask each contractor to separate labor, materials, disposal, prep work, warranty coverage, and optional upgrades so the bids are easier to compare.
• Ask what is excluded, especially repairs discovered after demolition or inspection.
• Confirm timeline, payment schedule, cleanup, warranty terms, and who handles permits.

Hidden costs to watch

Common budget surprises include demolition, disposal, damaged existing materials, access issues, permit fees, upgraded materials, and change orders after work begins.