Direct Answer
Yes, the Florida 25% roof rule can apply when roof damage is caused by a hurricane. The fact that the damage resulted from a hurricane does not, by itself, exempt the roof from the rule. However, Florida law provides an important exception: if the existing roofing system or roof section was built, repaired, or replaced in compliance with the 2007 Florida Building Code or a subsequent edition, and 25% or more of that roof system or roof section is being repaired, replaced, or recovered, only the portion being repaired, replaced, or recovered is required to comply with the current Florida Building Code. Florida Statutes §553.844(5)
Who This Applies To
This applies to commercial property owners, property managers, facility managers, roofing contractors, architects, engineers, adjusters, and building officials evaluating hurricane-damaged roofs in Florida.
Not for: Assuming that “25% damage” automatically means the entire roof must be replaced. The age and code compliance of the existing roof section, the applicable code edition, and how the roof is divided into sections can change the result.
1. What Is the Florida 25% Rule?
The basic rule generally limits repair, replacement, or recovery of an existing roof to 25% of the total roof area or roof section within a 12-month period, unless the applicable exception applies or the remaining roof is brought into compliance as required by the Florida Building Code.
The Florida Building Commission’s roofing-code materials describe the rule as limiting repair, replacement, or recovery to not more than 25% of the total roof area or roof section in a 12-month period unless the applicable code requirements for the existing roof are satisfied. Florida Building Commission — Roofing Code Development Materials
2. What Happens After a Hurricane?
Suppose a hurricane damages 30% of a commercial roof. The answer is not simply “replace the entire roof because damage exceeds 25%.”
The first question is whether the existing roofing system or roof section was built, repaired, or replaced in compliance with the 2007 Florida Building Code or a later edition.
| Situation | Potential Result |
|---|---|
| 25% or less damaged | Generally, the damaged portion can be repaired/replaced subject to applicable code requirements. |
| More than 25% damaged and existing roof meets the statutory exception | Only the repaired, replaced, or recovered portion is required to comply with the current code. |
| More than 25% damaged and existing roof does not qualify for the exception | The applicable 25% rule may require the remaining roof section to be brought into compliance with the current code. |
| Multiple distinct roof sections | The percentage is evaluated by roof section where the code treats the areas as separate sections. |
3. The 2007-Code Exception Is Important
Florida Statute §553.844(5) specifically states that when an existing roofing system or roof section was built, repaired, or replaced in compliance with the 2007 Florida Building Code or any subsequent edition, the current-code requirement applies only to the portion being repaired, replaced, or recovered—even when 25% or more is involved. Florida Statutes §553.844
This is particularly important after hurricanes because a large storm-loss repair can cross the 25% threshold without necessarily requiring the entire existing roof to be replaced under current-code requirements.
4. Does Hurricane Damage Get a Special Exemption?
Not simply because it is hurricane damage.
The 25% analysis is based on the applicable Florida Building Code requirements and the condition/code history of the existing roof. Hurricane damage can trigger the rule because it creates the need for repair or replacement, but the storm itself does not automatically eliminate the rule.
Emergency work intended to prevent additional damage can have separate considerations, but permanent reconstruction should be evaluated under the applicable building-code and permitting requirements.
5. Why “Roof Section” Matters
The 25% calculation is not necessarily based on the entire footprint of a large commercial building.
Florida Building Commission/FEMA guidance explains that a roof may contain multiple roof sections, such as areas separated by parapet walls or expansion joints. Each qualifying roof section can be considered separately when applying the 25% rule. FEMA Hurricane Irma Mitigation Assessment Team Report
Therefore, accurately identifying the affected roof section can materially change the calculation.
6. Example: Hurricane Damages 30% of a Roof
Imagine a commercial building has one defined roof section and a hurricane damages approximately 30% of it.
If that roof section was previously built, repaired, or replaced in compliance with the 2007 Florida Building Code or a later edition, the statutory exception can allow the owner to repair or replace the damaged 30% without automatically requiring the remaining 70% to be reconstructed to the current code.
If the roof does not qualify for that exception, the applicable 25% rule may require a broader code-compliance analysis and potentially replacement of the remaining roof section to meet current requirements.
7. What Documentation Should You Keep?
After hurricane damage, maintain documentation that establishes the roof’s history and the extent of the damage:
- Original roof permit.
- Roof replacement permits.
- Previous repair permits.
- Florida Product Approval or Miami-Dade NOA.
- Original roof installation date.
- Previous roof replacement documentation.
- Pre-storm inspection reports.
- Post-storm inspection reports.
- Photographs and videos of the damage.
- Roof plans showing roof sections.
- Contractor proposals and invoices.
- Building department correspondence.
- Insurance claim documentation.
These records can be particularly valuable when determining whether the existing roof qualifies for the statutory exception.
8. Insurance and Building Code Are Separate Questions
The 25% rule is a building-code issue. It should not be confused with the insurance question of how much damage or replacement cost is covered under a policy.
An insurer may evaluate the cause of loss, policy terms, deductibles, exclusions, limits, and covered damage separately from the building official’s determination of what must be repaired or reconstructed under the Florida Building Code.
Bottom Line
Yes, the 25% rule can apply to hurricane damage in Florida, but hurricane damage does not automatically mean that the entire roof must be replaced. The critical question is whether the affected existing roof system or roof section qualifies for Florida’s statutory exception based on compliance with the 2007 Florida Building Code or a subsequent edition.
Before deciding on full replacement after a hurricane, have the roof section, percentage of damage, previous permits/code compliance, and current Florida Building Code requirements evaluated by the appropriate roofing professional, design professional, and local building official.
Related Questions
- Can Membrane Roofs Be Repaired Easily After Storm Damage?
- Should I Repair or Replace My Commercial Roof?
- Should I Repair or Replace My Leaking Commercial Roof?
- How Do I Prove the Age of My Commercial Roof for a Claim?
Sources
- Florida Statutes §553.844 — Windstorm Loss Mitigation; Requirements for Roofs
- Florida Building Commission — Roofing Code Development Materials
- FEMA — Hurricane Irma Mitigation Assessment Team Report
Last reviewed: October 2026
Related Resources
For hurricane-damaged commercial roofs, preserving pre-storm documentation, roof permits, approval records, roof-section plans, and post-storm inspection evidence can make the 25% analysis substantially easier.
Need Commercial Roofing Help?
ShieldLine Roofing can help commercial property owners document storm damage, evaluate roof condition, and develop a repair or replacement scope for hurricane-damaged roofing systems.
This information is for general educational purposes and does not replace a project-specific determination by the applicable Florida building official, licensed design professional, roofing professional, or insurance professional.
Commercial Roof Repair in Florida
