The "25 percent rule" in roofing is a specific building code standard historically prominent in storm-prone regions like Florida. It dictates that if a specified percentage, typically 25 percent or more of a roof's total surface area or a distinct roofing section, is damaged, repaired, or recovered within a rolling 12-month period, the entire roofing section must be completely stripped and replaced to bring the structure into full compliance with modern building codes rather than just patching the localized damage.
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