Marion County sits squarely in Iowa's spring hail corridor — the track of storm systems that move northeast from Kansas through Central Iowa between April and June. Commercial flat roofs in Pella take a beating in a bad hail year, and the damage isn't always obvious from the ground. Membrane punctures and accelerated seam degradation from hail impact often don't show up as active leaks until the following winter. We do post-storm assessments for properties along the industrial corridors near Vermeer and Pella Corporation, the commercial buildings on Main Street, and the medical and retail properties on Washington Street and Highway 163. Marion County commercial permits run through the county building department for unincorporated properties and through the City of Pella for in-city work — we're familiar with both processes and handle the documentation.