City-by-city 2026 guides with real local housing and rainfall data — know the warning signs and how inspections work before you hire.
Last updated: October 2026
Ohio freeze-thaw cycling, lake-effect moisture in the northeast, and humid summers test siding joints and finishes statewide. Across the 125 Ohio cities we track, an average of 63.5% of homes were built before 1980 (U.S. Census Bureau, ACS 2020–2024) with average annual rainfall of 38.3 in/yr (NOAA 1991–2020 normals).
Each city page pairs siding how-it-works guidance — warning signs, the inspection process, materials, repair vs. replace — with that city's real housing-age and rainfall data, so you can see which pattern dominates locally. When you talk to contractors, ask how their plan accounts for the local weather, and whether they probed for rot before quoting a scope.