We map hail strikes across the full roof field on a diagram, not a sample area, noting impact density, membrane bruising, granule loss, and any punctures that go through to the insulation. We also check flashing, pitch pans, and rooftop equipment, since hail can crack pitch pan sealant and dent curbs and vent covers as readily as it marks the field membrane.
On larger commercial and industrial roofs, the kind common across the warehouse and manufacturing stock near the Ship Channel and the big-box and office roofs spread through the suburbs, hail density can vary noticeably across a single roof depending on wind direction during the storm. We document that variation instead of assuming uniform damage.