Storm Damage
The August 2020 derecho blew for 30 to 60 minutes over Davenport, Bettendorf and the rest of Scott County, and the roof damage was extensive. The July 2024 derecho brought gusts up to 100 mph, and its storms downed trees and power lines on Brady Street near 37th Street. Repair on a wind-damaged roof starts at the perimeter, where uplift does its work first.
Hail leaves a different signature. Stones of 2.5 inches fell on April 4, 2023, and bruised membranes do not always leak right away. Mapping the bruises and checking for moisture come first, and hail damage is not finished until both are done. The July 2025 EF-2 tornado ended near the Kimberly Road corridor, and a tornado-damaged roof often means debris, deck and structure before it means membrane.
What Winter Does
January is the snowiest month for the metro, with December and February trailing it. Drifts pile against parapets and penthouse walls, and meltwater refreezes at drains. On a roof with snow and ice damage, check drift loads, crushed flashings and drains that froze solid first.
When thaw water cannot leave, it sits. A ponding water problem traces back to a low spot, whether it came from deck deflection, a blocked drain or a roof pitched wrong from day one.







