Roof construction and reroofing in Fort Myers must comply with the 8th Edition (2023) Florida Building Code Chapter 15 and the Florida Building Code Residential equivalent, with ASCE 7-22 wind loads (~160-170 mph design wind speed, Risk Category II for Lee County). Florida's '25% Rule' (FS 553.844 and FBC §706) brings the entire roof up to current code when 25% or more of the roof system is repaired, replaced, or recovered within a 12-month period. Secondary water barriers, enhanced roof-deck attachment, and code-compliant roof-to-wall connections are required for site-built single-family residential roof replacements. All reroofing requires a city building permit through BPI.
Roof standards in Fort Myers are driven by the 8th Edition (2023) Florida Building Code (adopted by reference in Fort Myers Code Chapter 102) and Florida Statute 553.844 (Windstorm Loss Mitigation). FBC Chapter 15 sets prescriptive requirements for roof coverings, underlayment, fastening schedules, and roof-deck attachment for asphalt shingles, metal, tile, slate, and built-up roofs. ASCE 7-22 wind loads — referenced by the 2023 FBC — set the design wind pressure based on the ~160-170 mph design wind speed for Lee County (Risk Category II residential). Three key code provisions drive most reroofing decisions: (1) Florida's '25% Rule' at FS 553.844(3) and FBC Existing Building Code §706.1.1: when 25% or more of the roofing system (measured by area, per 12-month period) is repaired, replaced, or recovered, the entire roof must be brought into compliance with current FBC requirements — not just the patched portion. Below 25%, only the patched portion needs to meet code. (2) Secondary water barrier: per FS 553.844(5)(b) and the Florida Building Commission rules, residential roof replacements must include a secondary water barrier (typically a self-adhering modified bitumen underlayment over the entire deck) to prevent water intrusion if the primary covering is blown off. (3) Enhanced roof-deck attachment and roof-to-wall connections: FS 553.844(5)(a) and FBC §706.7 require improved nailing schedules for plywood/OSB roof decks (typically 8d ring-shank at 6 inches on edge / 6 inches in field, or 6 inches on edge / 12 inches in field depending on uplift zone) and roof-to-wall connection enhancements (hurricane clips/straps) — though connection improvements are capped at approximately 15% of reroofing cost under FS 553.844(5)(c). For homes with both hip and gable sections, priority for retrofit goes to gable ends unless the hip section is more than 1.5 times wider than the gable end. All roofing work, including reroofing, requires a city building permit under Fort Myers Code Chapter 102; the city's Roofing Trade Application is available through BPI at (239) 321-7925 or at fortmyers.gov/DocumentCenter/View/12995. Post-Hurricane Ian (Sept 28, 2022 — Cat 4 landfall), Lee County issued thousands of substantial-damage determinations that required full Chapter 15 / 25% Rule compliance on rebuilds.
Reroofing without a building permit violates Fort Myers Code Chapter 102 and the 8th Edition (2023) Florida Building Code. Roofing contractors must hold a Florida state license (Certified Roofing Contractor — CCC-license issued by the Florida Department of Business and Professional Regulation) and a city Local Business Tax Receipt. Performing reroofing without these is a state violation under FS 489 and a city Code violation. Failing the 25% Rule (recovering or replacing 25%+ without bringing the whole roof to code) results in failed inspection, Stop Work orders, and Special Magistrate fines up to $500/day under FS 162.09. Insurance carriers may deny claims and disclaim coverage on roofs installed without proper permit and code compliance. Owner-builders performing their own reroofing on owner-occupied single-family homes must affirm owner-builder status under FS 489.103 and accept liability.
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