Service

Hail Damage Roof Repair in Atlanta, GA

Hail damage on a commercial flat roof is not always visible from ground level — and what looks like minor surface bruising can represent significant warranty and service-life impact. Documentation matters as much as the repair.

Georgia sits at the southern edge of a severe weather corridor that produces significant hail events across the Atlanta metro several times per year. The spring convective season — typically March through May — generates the largest hail events, with the March 2021 tornado outbreak that tracked through Newnan and the broader I-85 south corridor being the most destructive single event in recent years. But late-summer and early-fall events, driven by Gulf moisture interacting with cold fronts, regularly produce hail across Gwinnett, Cobb, and DeKalb Counties.

Commercial flat roofs respond to hail differently than residential sloped roofs. On a shingle roof, hail impact leaves visible granule loss and surface bruising that an adjuster can identify from ground level. On a TPO, EPDM, or PVC single-ply membrane, hail impact may leave surface dimpling, membrane puncture at seam edges, accelerated UV degradation at impact points, or — most critically — damage to the insulation beneath the membrane without visible surface evidence. A hail event that does not visibly puncture the membrane may still shorten the system's effective service life by compromising the membrane's weathering layer at thousands of impact points.

Our hail damage assessment process is designed around the documentation that insurance claims require. We walk the roof in a systematic grid pattern, photograph every impact pattern, test membrane samples at impact sites for weathering-layer compromise using ASTM D5147 test probes, document pre-existing condition separately from event-related damage, and produce a written report that distinguishes what the storm did from what was there before it arrived. This distinction is the one that determines whether a claim succeeds.

What Hail Actually Does to Atlanta Commercial Roofs

TPO and PVC membranes: Hail impact on single-ply membranes leaves a spectrum of damage depending on hail size and membrane age. 1-inch hail on new 60-mil TPO typically produces surface dimpling without puncture. The same hail on aged TPO — where the weathering layer has thinned after 15 to 20 years of UV exposure — may compromise the membrane's weather resistance at impact points even without visible puncture. 1.5-inch hail can puncture aged single-ply at seam edges and at mechanically fastened zones where the membrane is under tension. 2-inch and larger hail regularly punctures single-ply membranes regardless of age and is the threshold that typically produces immediate interior leakage.

EPDM membranes: EPDM is more impact-resistant than TPO — the rubber compound absorbs energy differently than thermoplastic. Hail impact on EPDM typically produces surface indentation without immediate puncture, but impact points become stress concentrators for future thermal cycling failure. An EPDM roof hit by a significant hail event and not assessed may show hail-initiated seam separation 12 to 18 months later that is difficult to attribute to the event after the fact.

Modified bitumen: Impact on modified bitumen SBS typically produces surface bruising and granule displacement at the impact zone. The SBS modifier maintains flexibility, but repeated hail events accelerate the surfacing layer's degradation. APP-modified bitumen is less impact-resistant than SBS and more likely to show puncture at 1.5-inch hail thresholds.

Rooftop equipment: HVAC curbs, exhaust fans, condensing units, and rooftop electrical equipment take hail impact on exposed surfaces — condenser fins flatten, equipment caps dent, electrical conduit can crack. We document rooftop equipment damage in the same assessment as membrane damage because equipment damage frequently accompanies significant hail events and the costs can be separated in the insurance claim.

Our Hail Damage Assessment Process

Timing matters: Post-hail assessments should be conducted within 30 days of the event. Insurance policies frequently contain time-of-discovery provisions that affect claim eligibility. Courts and adjusters have established that damage discovery on a commercial roof more than 12 months after an event is difficult to attribute to the event without prior-condition documentation.

Grid walk and documentation: We divide the roof into numbered zones on a diagram and walk each zone systematically, photographing impact patterns in both close-up and zone-context views. Impact density — the number of hail strikes per 100 square feet of membrane — is calculated zone by zone and mapped. Atlanta claims adjusters working large-event losses (the March 2021 event, for instance) are familiar with grid-based impact density documentation and expect it as part of a properly prepared claim.

Membrane testing: At representative impact sites in each zone, we conduct a test-square membrane assessment — cutting a 6-by-6-inch sample for weathering-layer thickness measurement. On aged TPO membranes, impact-zone weathering layer thinning is the primary indicator of diminished service life even when no puncture is present. We document the test results and patch each test square before leaving the roof.

Scope separation: The final written report explicitly separates event-related damage from pre-existing condition in every zone of the roof. Pre-existing flashing failures, pre-existing membrane aging, and pre-existing drain deficiencies are documented separately from hail impact patterns and equipment damage. This separation is what the insurance company needs to process the claim and what a public adjuster or attorney needs if the claim is disputed.

Repair Versus Replacement After a Hail Event

Not every hail event produces a replacement scope. The repair-versus-replace decision after hail depends on pre-existing system age and condition, hail impact density and severity, and the insurer's position on actual cash value versus replacement cost coverage. A 5-year-old 60-mil TPO roof hit by 1-inch hail with no membrane puncture may be repaired with targeted seam reinforcement and patch-and-probe at impact zones. A 22-year-old 45-mil TPO roof hit by 1.5-inch hail with documented weathering-layer compromise across 40 percent of the surface is an honest replacement scope regardless of whether the insurer's initial position is repair.

We write both repair scopes and replacement scopes depending on what the roof condition and hail event support. We do not inflate scopes to maximize insurance recovery, and we do not minimize scopes to win approval quickly. The written scope is what we would install if no insurance money were involved — the insurance claim is a separate conversation between the owner and the insurer.

Emergency dry-in: If a hail event has produced active membrane puncture and interior leakage, we mobilize for emergency temporary dry-in before the full assessment is complete. Temporary tarping, self-adhered membrane patches, and emergency flashing repair stop active water intrusion while the formal documentation and claim process run. From our NE office, we can reach Buckhead and Midtown in under 30 minutes and most I-285 ring buildings within an hour for emergency mobilization.

Frequently asked questions