Housing in this service area was mostly built between 1950 and 2004, with the median landing around 1980, and most of the 18 communities we cover lean heavily on 1980s and 90s construction. That matters for panels specifically: doors from that era are almost always steel, often without the foam-core insulation that came standard later, and steel that age dents easier, rusts at the bottom seam first, and doesn't flex back the way a newer panel does when something clips it.
Shawnee sits in a cold, moderate climate band, which means real freeze-thaw cycling every winter - water gets into a seam or a ding, freezes, expands the gap, and by spring the rust has a head start. Bottom panels take the worst of it since they sit closest to snowmelt and road salt runoff. Combine forty-year-old steel with that seasonal cycling and a dent that would just be cosmetic on a newer insulated door turns into a rust-through spot that needs the whole panel replaced, not just touched up.