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Roof Replacement Cost Calculator

Roof replacement costs depend on roof area, pitch, access, tear-off layers, valleys, roof penetrations, shingle tier, and what is included beyond field shingles.

Project snapshot

Typical schedule

Many asphalt roof replacements take one to several days on site, but scheduling, weather, roof complexity, repairs, and inspections can extend the total timeline.

Disruption level

Medium. Interior rooms usually remain usable, but expect noise, driveway/material access, falling debris protection, and cleanup.

Pricing reality

Roof pricing is driven by roof area, pitch, access, tear-off layers, flashing, ventilation, sheathing repairs, and accessory details — not only shingles.

What usually moves the price

Common cost drivers

  • roof pitch
  • tear-off layers
  • roof complexity
  • shingle tier
  • sheathing repairs
  • access

Usually included

  • field shingles
  • underlayment allowance
  • tear-off if selected
  • basic flashing allowance
  • ridge/vent allowance
  • disposal allowance

Often excluded or conditional

  • major structural roof repair
  • chimney rebuilds
  • skylight replacement unless selected by contractor
  • solar removal
  • gutters

Build your cost range

Start with the project type and quick-start preset. The default estimate is usable right away; the extra controls are there when you know more detail.

Not sure on every detail? That is normal. Start with the closest preset, then change only the details you actually know.

Quick start

Pick the closest situation first. You can fine-tune the details below.

Project details

Answer the main scope questions for this project.

Location and market

Leave these at the defaults if you are not sure. Adjust them when your market is clearly cheaper, busier, rural, coastal, metro, or access-constrained.

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Use more for old houses, hidden damage, unclear scope, or projects that open walls/floors.
Professional estimator controls
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Keep this included. Real contractor pricing has overhead, insurance, admin, warranty risk, and profit.
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Small jobs often cost more per unit because mobilization, setup, and return trips do not scale down cleanly.

Questions to ask contractors

How to compare quotes for this project

A useful quote should make the included scope obvious. The goal is not to scare anyone away from the project — it is to avoid comparing one complete quote against one quote that leaves important items vague.

Double-check included

  • tear-off layers
  • ice/water shield locations
  • underlayment type
  • drip edge, starter, and ridge cap
  • flashing and pipe boots
  • ridge/attic ventilation
  • disposal and cleanup
  • sheathing repair price per sheet

Clarify before signing

  • Is rotten sheathing included or priced per sheet?
  • Which flashing is replaced and which is reused?
  • Are chimney, skylight, and wall flashing included?
  • Are gutters included or excluded?
  • What workmanship and manufacturer warranties apply?

Ways to save without cutting corners

  • Use a standard architectural shingle instead of premium designer shingles.
  • Avoid rush scheduling if the roof is not leaking.
  • Combine related exterior work only when it reduces mobilization.
  • Do not save money by skipping flashing, underlayment, ventilation, or proper cleanup.
  • Keep color/product choices in common stock lines when possible.

Before you request quotes

Better quote requests usually get better quotes. These items help contractors understand the real scope without needing a long phone call first.

Have this ready

  • Take photos of all roof sides if safely possible from the ground.
  • Note leaks, stains, ice dam history, ventilation issues, and known problem areas.
  • Ask whether drip edge, starter, ridge cap, pipe boots, flashing, and ventilation are included.
  • Ask the price per sheet for rotten sheathing replacement.
  • Confirm cleanup, magnet sweep, and warranty details.

Common budget surprises

  • rotten sheathing discovered after tear-off
  • flashing around chimneys, skylights, walls, and valleys
  • ventilation issues
  • multiple roof layers
  • gutter, fascia, or trim damage discovered during work

Helpful prep before the visit

  • Move vehicles from the driveway.
  • Protect attic or garage items under active leak areas.
  • Point out landscaping, septic, AC units, and other areas needing protection.
  • Clear access for material delivery and dumpster placement.

Contractor reality check

Related sizing calculators

Use these to check the material or equipment quantities behind the estimate.