Start here
Quick, low-risk steps
- Use binoculars or ground-level photos to check for visible damage without climbing.
- Mark indoor leak locations and note when they occur to share with contractors.
- Gather your roof’s age, material, and any prior repair records.
- Ask each bidder to provide measured area, pitch, and a detailed scope of work.
- Separate required work from optional upgrades in every quote.
Tear-Off and Decking Inspection
Removing old shingles down to the deck is standard for a full replacement. This allows a thorough inspection of the wood sheathing beneath. Rotten or damaged decking must be replaced to provide a solid base for the new roof.
Some contractors include a decking allowance in their base price, while others charge per sheet if replacement is needed. Ask how decking condition will be assessed and what the cost per sheet will be if additional work is required.
- Confirm whether tear-off is included or if an overlay is proposed.
- Ask how many layers of existing roofing will be removed.
- Understand the decking allowance and per-sheet replacement cost.
- Ensure the contract addresses disposal of old materials.
Underlayment and Leak Barriers
Underlayment is a water-resistant layer installed over the decking before shingles. It provides secondary protection against wind-driven rain and ice dams. In areas prone to ice or heavy rain, a self-adhered leak barrier may be required by code.
Common underlayment options include asphalt-saturated felt and synthetic materials. Synthetic underlayment is often lighter and more tear-resistant. Your contractor should explain which type they recommend and why.
- Ask which underlayment type is included in the quote.
- Verify if a leak barrier is needed at eaves, valleys, or penetrations.
- Check that underlayment installation follows manufacturer instructions.
- Understand how underlayment affects the overall warranty.
Flashing and Penetrations
Flashing is metal or other material used to seal joints and transitions on the roof, such as around chimneys, skylights, and vent pipes. Proper flashing prevents leaks at these vulnerable points. Old flashing should be replaced during a roof replacement, not reused.
Common flashing materials include aluminum, galvanized steel, and copper. The choice depends on the roof’s design and local climate. Ask your contractor to detail all flashing locations and materials in the proposal.
- Confirm that all existing flashing will be replaced, not just repaired.
- Ask about the type and gauge of metal used for flashing.
- Ensure step flashing is specified for sidewalls.
- Verify that pipe boots and vent collars are included.
Ventilation and Material System
Proper attic ventilation extends the life of your new roof by reducing heat and moisture buildup. A balanced system includes intake vents (usually at the soffits) and exhaust vents (ridge, gable, or roof vents). Inadequate ventilation can void shingle warranties.
The shingle system itself includes the shingles, starter strips, hip and ridge caps, and any required accessories. Asphalt shingles come in various styles and performance levels. Your contractor should specify the exact product line, color, and warranty.
- Ask how the ventilation system will be balanced (intake and exhaust).
- Confirm that the shingle manufacturer’s installation instructions will be followed.
- Get the specific product name, color, and warranty information.
- Understand the difference between architectural and three-tab shingles.
Take this with you
Evidence and scope checklist
- Tear-off and disposal of old roofing materials
- Decking inspection and replacement allowance
- Underlayment type and coverage area
- Leak barrier at eaves, valleys, and penetrations
- New flashing at all roof transitions and penetrations
- Ventilation system design (intake and exhaust)
- Shingle product line, color, and warranty
- Permit acquisition and inspection coordination
- Site protection and daily cleanup plan
- Change-order process and payment schedule
Common questions
What homeowners ask next
Do I need a permit for an asphalt shingle roof replacement in Atlanta?
Yes, the City of Atlanta requires permits for roof replacements. Your contractor should pull the permit and schedule inspections. Check with the city’s zoning and permitting office for current requirements.
How long does an asphalt shingle roof last?
The lifespan depends on shingle quality, installation, ventilation, and weather. Ask your contractor about the expected service life for the specific product they propose and what factors may affect it.
Can I install new shingles over old ones?
While overlays are allowed in some cases, a full tear-off is recommended to inspect decking and ensure proper installation. Building codes may limit the number of layers. Discuss the pros and cons with your contractor.
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.