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Hail damage inspection and repair for Orlando commercial flat roofs — impact-pattern documentation, membrane and cover-board assessment, and insurance-grade reporting following Central Florida hailstorm events.
Damage Repair
Single-ply membranes — TPO, EPDM, PVC — respond to hail impact differently depending on membrane thickness and cover board specification. A 45-mil membrane with no cover board is significantly more vulnerable to hail perforation than an 80-mil membrane over a 1/2-inch HD polyiso cover board. The cover board absorbs and distributes impact energy; without it, the hailstone's kinetic energy concentrates at the impact point and can crack the membrane or create an elongated stress crack that is difficult to see but allows capillary water intrusion.
Modified bitumen and BUR (built-up roofing) systems respond differently — the granule surface of a cap sheet or the aggregate surface of a BUR system shows hail impact as dislodged or displaced granules or aggregate, which is visible but does not immediately indicate membrane breach. The functional damage is in the surfacing layer's ability to continue protecting the underlying bitumen from UV degradation. A hail event that removes surfacing aggregate accelerates UV degradation of the bitumen in proportion to the area of exposed bitumen — which is why a hailstorm on a BUR or granule-cap-sheet roof can look cosmetically minor but materially reduce the roof's remaining service life.
Rooftop HVAC equipment, skylights, exhaust vents, and curb flashings are all vulnerable to hail impact independent of membrane condition. Metal flashing cans, aluminum vent caps, and HVAC equipment panels show hail impact as dimpling or denting that can compromise drainage design at curb flashings and create debris-catch points that accelerate future clogging. We document all accessory and equipment damage in addition to membrane and cover board condition.
The first documentation step is verifying the hail event at the building's location. National Weather Service storm reports and SPC public storm reports provide hail size and location data for confirmed hailstorm events. When a hailstorm event is confirmed in the building's county on the date of the alleged damage, the causation question is straightforward. When the event is not confirmed in the NWS data — which happens with localized convective hail that does not trip a spotter report or radar-detected hail threshold — we document physical evidence at the building: dented aluminum HVAC panels, dented gutters or flashings, impact marks on rooftop equipment, and the spatial density and pattern of membrane impact points.
Impact density documentation — the number of impacts per square foot in representative zones — is a standard part of hail damage inspection methodology that we include in our reports. This metric allows the adjuster to correlate the observed damage to the reported hail size: a quarter-size hail event at 40-50 mph terminal velocity produces a predictable impact density range on TPO membrane that can be cross-referenced against the documented storm data.
We photograph every impact point in close-up and in context — close enough to show the membrane condition at the impact point, wide enough to show the impact's location on the roof zone diagram. The photo log and zone diagram together give the adjuster a spatial picture of the event's effect on the building rather than a collection of undifferentiated close-up photos.
Most hail damage on commercial flat roofs does not cause immediate leaks — it causes subsurface cover-board cracking, membrane stress points, and surfacing loss that accelerates degradation over the following seasons. The damage is real but latent. A professional inspection within 30- to document the damage condition before it evolves into a leak that is difficult to attribute to the original storm.
Florida property insurance claim deadlines changed significantly with the 2023 reform legislation — the window for filing new claims and supplemental claims is shorter than it was under prior law. We do not provide legal or insurance coverage advice, but we recommend contacting your broker or public adjuster promptly after a hail event rather than waiting for a leak to develop. Earlier inspection preserves more documentation options.
Major hail impacts that breach the membrane create conditions that can be excluded from manufacturer warranty coverage if not promptly repaired. Most manufacturer warranties require that damage be reported within a specified period and that the insured repair any breach promptly to prevent further water intrusion. We document hail impact conditions and recommend repair scope that maintains warranty integrity.
On un-protected 45-mil single-ply membrane, quarter-size (1 inch) hail at typical terminal velocities can create stress cracks and subsurface cover-board damage. On 60-mil or 80-mil systems with a cover board, larger hail sizes — half-dollar to golf ball — are typically required to cause immediate membrane breach, but subsurface cover-board damage occurs at smaller sizes. The NWS classification of hail as 'significant' starts at 1 inch; any hail event meeting that threshold warrants a commercial flat roof inspection.
We will inspect the membrane, cover board, and all rooftop accessories — photo-keyed zone documentation and a written assessment you can use with your adjuster.
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