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

Peachtree Corners roof replacement permits — the key details

Peachtree Corners requires a permit for any roof replacement that involves tear-off, structural deck repair, material change, or coverage of more than 25% of the roof area. The trigger is not roof age or value — it is scope. Georgia's adoption of the International Building Code (IBC) and International Residential Code (IRC) means IRC R907 (reroofing) and IRC R905 (roof-covering requirements) are the law here. The city's Building Department processes most residential re-roof permits over-the-counter, meaning a plan reviewer examines your application the same day or next business day and issues or asks for corrections immediately — no multi-week committee review. However, this speed depends on completeness: your application must include the roofing material spec (brand, color, fastening schedule), underlayment type and quantity, and confirmation of deck condition. If the deck has rot, previous water damage, or loose nailing, you are now in a structural repair category, which adds engineering time. The city does not charge a separate structural review fee, but the timeline stretches to 5-7 days if an engineer's stamp is needed.

The most common local complication is the three-layer rule. If your existing roof has three or more layers of shingles, IRC R907.4 requires complete tear-off — you cannot overlay. Peachtree Corners' code adoption is strict on this: the city will ask for photographic evidence of the existing layers during plan review, or will condition the permit on a field inspection before shingles arrive. Why? Three layers create excessive weight and thermal stress, and they trap moisture, leading to premature failure. Roofers sometimes skip this check or miscount; if your roof is old (25+ years) and you've never done a full re-roof, assume three layers until proven otherwise. Peachtree Corners sits in IECC Climate Zone 3A (warm-humid), which means the city expects proper ventilation and underlayment to manage summer heat and occasional cold snaps. The city's standard underlayment spec is 30-lb felt or synthetic equivalent (e.g., Titanium UDL or similar), installed per IRC R905.2. Some newer products like synthetic rope underlayment are approved if the manufacturer's installation is IBC-compliant and attached to the permit application. The city does not require ice-and-water-shield on every roof (unlike northern zones), but if you have valleys or a low-slope section, the city recommends it in the 3-foot toe-of-the-eave band and will not reject your application for including it.

Material changes (shingles to metal, asphalt to clay tile, or standing-seam) require closer scrutiny. If you are switching from asphalt shingles to metal roofing, the city requires confirmation that the roof structure (trusses, collar ties, rafters) can handle the dead load difference. Metal roofing is lighter than asphalt (2.5–4 lbs/sq vs 12–15 lbs/sq), so the structural load actually decreases — this is usually a non-issue, and the city will issue the permit without engineering. However, if you are switching to clay tile or concrete tile (10–18 lbs/sq), a structural engineer must certify the roof framing is adequate. This adds $400–$800 to your project cost and 5–10 days to the timeline. Peachtree Corners' code adoption does not require a local geotechnical report for tile roofs (unlike some jurisdictions), so engineering is the only hold-up. Fastening pattern also changes by material: asphalt shingles use 4 nails per shingle or per manufacturer spec (typically 6–8 per square), while metal roofing uses specialized fasteners and underlayment clips. The city will spot-check the fastening schedule in plan review — if your metal roofing spec says 'per manufacturer installation guide,' the city will approve; if it's vague, ask for correction before submission.

Peachtree Corners offers no expedited permitting for owner-builders, but Georgia law (Georgia Code § 43-41) does allow owner-builders to pull permits if the building is owner-occupied and single-family. Most homeowners hire the roofing contractor to pull the permit because the contractor already has the material specs and liability insurance. If you pull it yourself, you must submit the same application as a licensed contractor: material spec sheet, underlayment spec, fastening pattern, and existing roof layer count. The city does not charge different fees for owner-builder vs. contractor permits. Inspection is required at two stages: deck nailing (in-progress) and final. The deck-nailing inspection happens after tear-off and before new shingles are installed; the inspector verifies the deck is nailed per code (typically 8d spiral or ring-shank nails, 12 inches on-center each way for 3/8-inch plywood, per IRC R803.3). If the deck is damaged during tear-off, you must repair or replace it with plywood matching the original thickness — this gets flagged during the deck inspection and must be completed before new shingles start. Final inspection is a visual check of the completed roof: starter course installed, fastening visible and correct (spot-check of 10–20 fasteners), flashing around chimneys/vents/skylights sealed, and gutters reattached or replaced. The city does not require attic inspection unless there was prior water damage noted.

Peachtree Corners Building Department permits for roofing are priced on a sliding scale tied to roof area (typically 1–1.5% of estimated project cost). A 2,000-square-foot roof (about 20 squares in roofing terminology) with standard asphalt shingles ($4,000–$6,000 all-in) incurs a permit fee of $50–$150. Metal roofing (same area, $8,000–$12,000) incurs $80–$200. The permit must be pulled before work starts, and a permit card is posted on-site during construction. Inspection requests are made online or by phone to the Building Department; inspectors typically respond within 24–48 hours. Timeline from application to final permit: 1–3 days for like-for-like replacement; 5–10 days if structural engineering or material change is involved. No re-inspection fees are charged if the first pass-through fails; correcting deficiencies (e.g., reattaching a loose flashing) and calling for re-inspection is included in the permit. Peachtree Corners does not require asbestos surveys or abatement for most residential re-roofing (homes built after 1980 are assumed asbestos-free unless the homeowner has prior knowledge); if your home was built before 1980 and you suspect asbestos shingles, the city recommends a licensed asbestos contractor for tear-off, but this is not a permit requirement — it is a safety and environmental issue between you and your roofer.

Three Peachtree Corners roof replacement scenarios

Why Peachtree Corners enforces the three-layer rule strictly — and why it matters to you

IRC R907.4, adopted by Georgia and enforced by Peachtree Corners, prohibits a third layer of roofing on any residential structure. The rule sounds bureaucratic but it solves a real problem: three layers of shingles (roughly 36 lbs/sq, or 1,800 lbs total on a 20-square roof) create dead-load stress on older roof framing that was designed for 20–25 lbs/sq. The underlayment also traps moisture between layers, which rots the deck and shortens shingle life. Warm-humid climates like Zone 3A (Peachtree Corners) are especially vulnerable to this moisture trap: summer heat and humidity penetrate the first two layers, condense in the middle, and the wood deck never dries out.

Most Atlanta-area homes built in the 1980s–2000s were originally built with one layer of asphalt shingles. Many got their first overlay in the late 1990s (cheaper than tear-off; common practice then). By 2010–2015, the original shingles + first overlay are both failing, and the contractor faces a choice: tear off (costs extra, is messy, requires disposal) or overlay again (tempting — instant revenue, no disposal). Peachtree Corners' code enforcement means that choice is off the table. You must tear off. The upside: you get to inspect the deck, fix rot, replace any damaged plywood, and start fresh with a single layer that will last 20–25 years. The downside: tear-off adds $1,500–$3,000 to the project cost vs. an overlay.

The city's plan reviewer checks for the three-layer trap during intake by asking the applicant to describe existing roof conditions. Many homeowners and roofers honestly answer 'one layer' when they've never done a tear-off and don't know. This is why Peachtree Corners' code makes the deck-nailing inspection mandatory: the inspector confirms in person. If three layers are found, the permit is flagged, the roofer is told to stop, and a new scope (tear-off) must be permitted. You cannot move forward with shingles until the old ones are removed. It's an inconvenience but it saves money and headaches over the roof's lifetime.

Peachtree Corners' handling of synthetic underlayment and why it matters in Zone 3A

Peachtree Corners, like most of Georgia, accepts both traditional 30-lb felt underlayment and modern synthetic alternatives (polypropylene, non-woven composites). The city does not have a preference — both meet IRC R905.2. However, there is a practical difference in warm-humid climates. Traditional felt is breathable; it allows moisture vapor to travel downward through the underlayment to the deck, where air circulation dries it out. Synthetic underlayment is also vapor-permeable (most are), but it is less absorbent. If moisture gets trapped under the shingles (e.g., from a roof leak or wind-driven rain), traditional felt soaks it up temporarily while the sun dries the roof; synthetic underlayment sheds it more quickly sideways toward the eaves and gutters. Both work, but some roofers and builders prefer synthetic in warm-humid zones because the faster drainage reduces the odds of wood rot.

Peachtree Corners does not specify underlayment type in its permit application form — the city simply requires that underlayment be 'per IRC R905.2 and manufacturer specifications.' This means you and your roofer choose, but you must call it out on the permit. If the application says 'synthetic underlayment per GAF WeatherLock or equivalent,' the city approves it over-the-counter. If it says 'felt or synthetic, per contractor discretion,' the city will ask you to clarify before issuing. The reason: the inspector must spot-check installation during the deck-nailing inspection. If the permit says synthetic and the inspector finds felt, there is a code mismatch and work stops. If the permit already specifies felt, there is no issue.

On metal roofing (Scenario C), synthetic underlayment is more strongly recommended. Metal conducts heat and cold; when warm, humid outside air meets cold metal on a spring or fall morning, condensation forms on the underside of the metal panel. Traditional felt absorbs and holds this moisture; synthetic sheds it and drains it. Peachtree Corners' code does not mandate synthetic for metal, but the city's inspectors and plan reviewers are familiar with this issue and will not reject a permit that specifies synthetic + metal. If your roofer proposes felt under metal, confirm with the city first.

Common questions