Start here
Quick, low-risk steps
- Collect at least three detailed written quotes with line-item breakdowns.
- Use binoculars or ground-level photos to note roof condition; do not climb.
- Ask each bidder to state the measured roof area, pitch, and decking allowance.
- Separate required scope (tear-off, underlayment, flashing) from optional upgrades.
- Check that permit and inspection costs are included or clearly excluded.
- Compare warranty terms: material warranty, workmanship warranty, and what voids them.
Why Quotes Vary So Much
Roofing quotes can differ by thousands of dollars even for the same house. The main reasons are differences in scope, materials, and assumptions. One contractor may include full tear-off and new decking where needed, while another may quote an overlay without decking replacement. Without a standard list of scope items, it is hard to know what you are paying for.
Other factors include the quality of underlayment, flashing details, ventilation upgrades, and warranty length. Some bids may exclude permit fees or site protection, which can add unexpected costs later. By asking every contractor to use the same checklist, you can compare prices for the same work.
- Tear-off vs. overlay changes labor and disposal costs.
- Decking allowance: some quotes include a set amount per sheet replaced.
- Underlayment type (synthetic vs. felt) affects price and performance.
- Flashing replacement around chimneys, skylights, and walls is often extra.
- Ventilation upgrades may be required by code but not always quoted.
Standardizing the Scope
Create a simple spreadsheet or use a comparison tool to list the same scope items for each quote. Key items include: roof measurement and pitch, tear-off and disposal, decking allowance, underlayment and leak barrier, flashing, vents and ventilation, material system, permit and inspection, site protection and cleanup, and warranty terms.
Ask each contractor to confirm the measured roof area and pitch. If they differ, ask why. Some may use satellite measurements while others measure by hand. The decking allowance should state how many sheets of plywood or OSB are included in the base price and the cost per additional sheet. This prevents surprise charges if rotten decking is found.
- Roof measurement: total square footage and pitch.
- Tear-off: number of layers being removed and disposal method.
- Decking: included sheets and cost per extra sheet.
- Underlayment: type, brand, and coverage (whole roof or just valleys).
- Flashing: which penetrations are included and material type.
Materials and Warranties
Material choices greatly affect price and longevity. Asphalt shingles come in different grades (3-tab, architectural, designer). Metal roofing has various profiles and coatings. Make sure each quote specifies the exact product name, color, and warranty. A '30-year shingle' may have different wind ratings or algae resistance depending on the manufacturer.
Warranties have two parts: the manufacturer's material warranty and the contractor's workmanship warranty. Material warranties often require specific installation methods and accessories to be valid. Workmanship warranties vary from a few years to lifetime. Ask what actions void each warranty, such as improper ventilation or lack of maintenance.
- Exact product name and manufacturer for shingles or metal.
- Wind rating and impact resistance class if applicable.
- Material warranty length and what it covers (proration, labor).
- Workmanship warranty length and transferability.
- Conditions that void warranties (e.g., lack of ventilation).
Permits, Inspections, and Hidden Costs
In Atlanta, roofing work typically requires a permit and inspections. The City of Atlanta provides zoning, development, and permitting services. Confirm with each contractor whether the permit cost is included in the quote and who is responsible for scheduling inspections. Some quotes may list permit fees as a separate line item or exclude them entirely.
Other hidden costs can include site protection (plywood for windows, tarps for landscaping), portable toilet rental, and dumpster fees. Ask if cleanup includes magnetic sweeping for nails. Also, check if the quote assumes no change orders; if unexpected damage is found, how will the price change? A clear change-order process protects you from escalating costs.
- Permit fee included or excluded; who pulls the permit.
- Inspection scheduling and who meets the inspector.
- Site protection: windows, landscaping, driveway.
- Cleanup: magnetic nail sweep, debris removal.
- Change-order process: how extra work is approved and priced.
Take this with you
Evidence and scope checklist
- Roof measurement and pitch confirmed by each bidder.
- Tear-off and disposal included for all layers.
- Decking allowance: number of sheets and cost per extra sheet.
- Underlayment type and coverage area.
- Flashing material and which penetrations are covered.
- Ventilation: type and number of vents, any upgrades.
- Material system: exact product name, color, warranty.
- Permit and inspection costs and responsibilities.
- Site protection and cleanup details.
- Warranty terms and change-order policy.
Common questions
What homeowners ask next
Why do roofing quotes vary so much?
Quotes vary due to differences in scope, materials, and assumptions. One may include full tear-off and new decking, while another may overlay without decking replacement. Standardizing the scope helps you compare fairly.
What should I ask about decking?
Ask how many sheets of decking are included in the base price and the cost per additional sheet if rotten wood is found. This prevents surprise charges during the project.
Are permits always required for roof replacement in Atlanta?
Most roof replacements in Atlanta require a permit and inspections. Check with the City of Atlanta's permitting services and confirm with your contractor who handles the permit process.
Evidence
Sources used for this guide
Research checked July 31, 2026
- Zoning, development, and permitting servicesCity of Atlanta
Current Atlanta permit workflow and jurisdiction-specific cautions.
- International Residential Code wind and roof compilationFEMA
Model-code background; locally adopted code and permits control.
Optional next step
Need an on-site professional?
Use the guide and worksheet first so you can describe the situation and compare the full scope. A referral is optional; you can also contact a licensed local provider directly.
We have not enabled a provider route for this site. Use the checklist to contact and verify local providers yourself; urgent hazards should go to the appropriate emergency or public service.