Tulsa is deep in hail alley. We document hail impact on commercial membrane roofs so the claim reflects the true extent of the damage.
Green Country sees hail most springs, and Tulsa County has taken direct hits from significant hail events more than once in the last two decades. The stone sizes that make the evening news are the ones that dent cars and crack windshields — the same storms leave impact marks across acres of commercial membrane roofing that never make the news, on warehouses along the Port of Catoosa corridor, distribution buildings near the Broken Arrow Expressway, and office parks off US-75, because nobody's standing on the roof to look.
Hail damage on a low-slope commercial roof doesn't look like hail damage on a shingle roof. There's no obvious bruising pattern visible from the ground. On a TPO or PVC membrane, hail leaves circular impact impressions — small depressions where the stone compressed the membrane and the insulation underneath. On EPDM, impact can show up as surface pitting or, at the granule layer of a modified bitumen cap sheet, as granule loss that exposes the asphalt beneath. None of it is visible from a parking lot, and a lot of it isn't obvious even on the roof unless you know where to look and the light is right.
We map impact density across the roof field — not a handful of sample photos, but a zone-by-zone count that shows how the damage is distributed. A roof with scattered isolated impacts reads differently to an adjuster than one with dense, consistent impact across every zone, and that distribution is part of what supports a repair-versus-replacement recommendation. We photograph each impact site at three distances: a wide shot for zone context, a mid-range shot showing the impact relative to seams and penetrations, and a close-up with a scale reference.
Where the membrane's condition is ambiguous — impact marks that could be storm-related or could be pre-existing wear — we pull core samples to check for insulation compression or moisture intrusion beneath the impact site. That physical evidence matters more to an adjuster than a photograph alone when the call is close.
We anchor the damage to the specific storm event using NOAA radar archives and Storm Prediction Center storm reports for stone size and storm track, which ties the impact pattern on your roof to a documented weather event rather than leaving the date and severity as an assumption. The existing membrane's hail-resistance classification — whether it's rated under FM 4470 or UL 2218 for impact resistance — also factors into how the damage gets assessed. A rated assembly may show cosmetic marking that doesn't rise to functional damage under its tested performance standard, while an unrated standard assembly can sustain functional damage at smaller stone sizes. We note the assembly's rating status in the scope so the adjuster is working from the correct baseline.
The scope separates confirmed hail impact from any pre-existing wear or prior repairs we find on the roof, so the claim reflects storm damage specifically and doesn't get contested over items that predate the event. Where impact density and membrane condition point toward full replacement rather than spot repair, the scope includes the reasoning: how much of the roof field is affected, what the core samples showed, and why a section-by-section patch job wouldn't restore the roof to its pre-loss condition.
We're your roofing contractor, not a public adjuster — we document and substantiate the hail damage so you and your adjuster work from an accurate scope.
Close-range inspection in low-angle light, which reveals impact impressions that aren't visible from a standing walk-through or from the ground. We map impact density zone by zone and use core samples where the surface evidence alone doesn't answer whether the insulation was affected.
It depends on the membrane type, thickness, and whether the assembly carries an impact-resistance rating. Smaller stones can affect an older or unrated membrane while a newer rated assembly may tolerate the same event with only cosmetic marking. We assess against the specific roof, not a generic size threshold.
Carriers look for evidence the impact pattern matches a documented storm event and isn't ordinary wear. Anchoring the damage to NOAA and Storm Prediction Center storm data for the specific date, combined with an impact density map, is what supports the hail attribution.
Not necessarily. Isolated impact on a roof with remaining service life is often a repair. Dense impact spread across most of the roof field, especially combined with core samples showing insulation compression, is what typically points toward replacement. We document the actual distribution rather than assuming either outcome.
Yes, we can do both, or the documentation can stand alone if you're using a different contractor for the repair. The zone diagram, photo log, and written scope belong to the building owner either way.
We'll map the impact, pull samples where they're needed, and put a written scope in front of you and your adjuster.
Tell us about the building and the roof problem. We'll document it and put a plan in writing — no pressure, no boilerplate.
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