Do I need a permit for roof replacement in
Conyers, Georgia?

Conyers roof replacement permits — the key details

The core rule is Georgia's adoption of the 2022 IBC, specifically IRC R905 (roof covering requirements) and IRC R907 (reroofing), which Conyers City Code Chapter 22 mirrors without substantive local amendments. Under IRC R907.4, a roof can only be recovered (overlay) if it has fewer than two existing layers and the substrate is sound. If a field inspection reveals three or more layers or widespread rot, you must tear to bare deck — Conyers building inspectors (typically contracted through the county or a third-party agency under the city) will not sign off on an overlay in that scenario. This rule exists because layered roofs trap moisture in warm-humid climates like Georgia's zone 3A, where summer humidity can exceed 80%, causing premature failure and mold. The permit application must include a roof survey documenting the number of existing layers (taken via field inspection or historical records) and a materials specification sheet for the new covering (e.g., architectural shingles per ASTM D3462, underlayment per ASTM D226, fastener size and spacing per manufacturer). Conyers does not offer a blanket exemption for owner-builders on roofing (unlike some states), though Georgia Code § 43-41 allows owner-builders to perform work on owner-occupied single-family homes without a contractor license; however, the building permit and inspections are still required, and the permit applicant must be the owner or a licensed contractor hired by the owner.

Exemptions are narrow. Like-for-like repairs covering less than 25% of the roof area (roughly 3–5 squares on a typical 1,200–1,500 sq ft home) do not require a permit if no tear-off occurs — for example, patching 10 shingles after storm damage. Gutter and flashing replacement, if it doesn't disturb the roof covering, is typically exempt; however, if the roofer must remove shingles to replace flashing over a wider area (e.g., a chimney chase or valley), the work crosses into 'partial replacement' and triggers a permit if the affected area exceeds 25%. Conyers' building department interprets '25%' conservatively: if in doubt, they will ask for a pre-job site visit to measure the affected area. One common error is assuming a 'repair' permit is cheaper or faster — Conyers does not issue a separate 'repair permit' category for roofing; anything touching the deck or requiring underlayment replacement is processed as a standard roofing permit and incurs the same fees and inspection cycle.

Ice-and-water-shield is mandatory in Conyers due to climate zone 3A warm-humid conditions. Per the 2022 IBC (and Georgia's adoption), synthetic underlayment or ice-and-water-shield must be installed within 24 inches of the eaves and within 24 inches of any roof penetration (chimney, vent, skylight). This is a frequent rejection point: if your roofer's quote or the permit application doesn't specify the underlayment product and installation distance, the building department will request clarification during plan review. The cost is modest (roughly $1.50–$3 per sq ft of underlayment), but missing or undersized underlayment leads to callbacks and can delay final approval by 1–2 weeks. Additionally, if you're upgrading from standard asphalt shingles to architectural (thicker) shingles or to a heavier material like metal or composite, the structural engineer or roofing manufacturer must confirm that existing roof framing can support the added load. Conyers requires this certification in writing; if you're converting to metal (typically 50–70 lbs per square vs 200–250 lbs for architectural shingles), the permit application must include a span-and-load table or engineer's letter confirming the deck joists and rafter spacing are adequate.

Material changes — such as switching from asphalt shingles to metal, clay tile, or concrete tile — require plan-review scrutiny because they alter the roof's wind-uplift load rating and thermal expansion characteristics. If you propose metal roofing, the permit application must specify the fastener pattern (typically 2 fasteners per rib or 4 per panel, depending on the manufacturer), the underlayment type (often a synthetic breather-type to prevent moisture trapping under metal in humid climates), and the attachment method (standing seam vs through-fastened). Conyers' plan reviewer will cross-check the attachment pattern against the roof's design wind speed for your area (roughly 110 mph for Conyers in the nominal design wind pressure table) and the metal panel manufacturer's uplift-rating table. Tile or slate materials trigger an automatic structural review because they weigh 1,000+ lbs per square; if your home was built in the 1980s–2000s with 16-inch rafter spacing (common for shingle-weight design), tile is likely not feasible without reinforcement. This review adds 1–2 weeks and $500–$1,500 in engineer fees, so material changes are costlier and slower than like-for-like shingle re-roofs.

Timeline and inspections in Conyers: After you submit the permit application online or in person at City Hall, plan review takes 5–7 business days (shorter for like-for-like shingle, longer for material changes or structural concerns). Once approved, you have 180 days to begin work; if work stalls, the permit lapses and you must re-apply. During installation, Conyers requires a rough-in inspection before covering the deck (to verify deck nailing, flashing preparation, and underlayment installation). After the roof covering is installed and before the building wraps, you call for a final inspection, which typically occurs within 2–3 business days. The final inspector verifies fastener pattern, ridge-cap installation, flashing details, and that no shingles overhang the edge (IRC R905.2.8). If defects are found, you have 10 days to correct and request re-inspection. Total project timeline from permit application to certificate of completion is typically 2–4 weeks, assuming no rejections during plan review and the roofer is responsive to inspection schedules.

Three Conyers roof replacement scenarios

Why Conyers strictly enforces the three-layer rule and what it costs you

Georgia's warm-humid climate (zone 3A, 60–80% annual humidity, summer highs 90°F+) creates a perfect environment for moisture entrapment in layered roofs. When three or more layers of asphalt shingles sit atop each other, the bottom layers trap moisture vapor that cannot escape to the exterior; the heat of the sun drives vapor up from the attic, where it meets the cooler shingles above and condenses. Over 3–5 years, this condensation rots the plywood deck and creates mold colonies under the shingles — invisible until you have a major leak or a roof failure. Conyers Building Department enforces IRC R907.4 strictly because the city has seen costly roof failures and mold remediation claims on homes where three-layer overlays were installed. The rule is not arbitrary bureaucracy; it's a hard-learned lesson.

Discovery of three layers typically happens during the field inspection portion of the permit process. Your roofer or the city inspector removes a sample shingle in an inconspicuous area (usually an interior slope) and photographs the layers underneath. If three are found, the building department will not approve an overlay; you must tear to bare deck. Tearing an additional 1–2 layers adds $2,000–$4,000 to the project cost (40–60 extra labor hours in Piedmont terrain) and delays the job by 3–5 days. Many homeowners discover this during permit review and are shocked; the original roofer's quote may not have included this contingency. To avoid this, ask your roofer to verify the number of layers in writing before you obtain a permit. Some roofers use an infrared camera or roof-cutting tool to peek without causing damage; others rely on age estimates from city records. Document the layer count in your permit application to avoid surprises.

If you're flipping a home or buying a 1980s–1990s Conyers ranch that's had two roof jobs already, budget for a three-layer tear-off. Conyers code does not allow you to 'grandfather' old overlays; the rule applies to all work permitted after 2022 (the current adopted code). An older home with three layers can be sold as-is, but the buyer (or the homeowner later) cannot overlay a fourth layer; they must tear and replace. This can depress the property value by 5–8% if the buyer anticipates a roof replacement soon and realizes the cost is higher than they budgeted.

Ice-and-water-shield, underlayment, and ventilation in Conyers' humid climate

Ice-and-water-shield (also called self-adhering underlayment or synthetic ice damming) is mandatory within 24 inches of eaves in Conyers per the adopted IBC R905.2.8.1, which addresses cold-weather roof moisture. Although Conyers rarely sees sustained freezing (winter lows 20–35°F, brief), the 24-inch zone at the eave is where wind-blown rain and ice backup can occur during the rare ice storm. The ice-and-water-shield is a sticky membrane that prevents water from wicking under shingles if ice damming occurs. Cost is roughly $2–$4 per sq ft, so for a 1,800 sq ft roof with a 40-foot perimeter, you're looking at roughly $360–$720 in underlayment just for the eave zone. Some roofers upsell full roof ice-and-water-shield (entire deck), which costs $3,000–$5,000 for a 20-square roof; Conyers does not require this, only the 24-inch eave band and around penetrations.

Beyond the ice-and-water-shield, the rest of the deck can use felt paper (No. 30 asphalt felt per ASTM D226) or synthetic underlayment (felt-like synthetic, roughly $0.75–$1.50 per sq ft). Synthetic underlayment is popular in Conyers because it resists moisture and tears less during installation in humid conditions, but felt paper is code-compliant and saves money. If you're installing metal roofing, synthetic underlayment is strongly advised (roofers often require it) to prevent condensation. The permit application should specify the underlayment type; if you don't, the plan reviewer will ask, and it will delay approval by 1–2 days.

Ventilation is not directly a permit issue, but it's worth noting: Conyers' warm-humid climate demands proper attic ventilation (per IRC R806) to prevent mold and moisture in the attic space above the roof. If your attic is poorly ventilated (few soffit vents, blocked gables), moisture will accumulate under the new roof, shortening its lifespan and voiding some warranties. During your permit process, the building inspector won't typically assess ventilation unless there's obvious blockage (e.g., insulation piled against a soffit vent), but you should have a roofer or HVAC contractor verify that soffit and ridge vents are open and unobstructed before the re-roof. This is preventive and often overlooked by homeowners.

Common questions