The 25% rule has to do with a Florida roofing code that in simple terms says, if more than 25% of your roof sustained storm damage within 12 months, you are required to replace the entire roof system to bring it up to current building code standards.

While Ohio does not have a 25% rule built into the state building code, Ohio does have a matching law which regulates that repaired or replaced areas reasonably match the existing materials in quality and appearance, preventing mismatched repairs.

So in Ohio, roof replacements are typically based on the extent of actual damage and whether proper matching is possible, not a strict percentage threshold.