Direct Answer
Hurricane Ian taught commercial property owners in Fort Myers and Naples that roof performance depends on more than the age of the roof or whether a building was constructed under a modern code. Ian exposed weaknesses in low-slope commercial roof coverings, flashing, coping, edge details, installation quality, and maintenance—and showed that newer code-compliant buildings generally performed better structurally while roof-cover and edge-component failures could still occur.
Hurricane Ian made landfall in Southwest Florida on September 28, 2022. IBHS evaluated 327 light commercial buildings and found that low-slope commercial roofs had damage rates above 50%, with many of the affected roofs also showing flashing or coping failures. IBHS also found that modern Florida Building Code buildings generally had strong structural performance, while low-slope roof-cover and flashing problems remained significant. :chatgpt-content-reference{index=”0″}
For Fort Myers and Naples commercial owners, the practical lesson is clear: do not wait for the next hurricane to discover whether the roof’s weak points are seams, perimeter edges, flashings, penetrations, drainage, fasteners, or aging materials. Those components should be identified and documented before a storm and inspected again afterward.
Who This Applies To
- Commercial property owners in Fort Myers, Naples, and Southwest Florida
- Property and facility managers
- Warehouse and distribution center owners
- Retail and shopping-center owners
- Office and medical building owners
- Hospitality and multifamily property owners
- Commercial real estate investors and asset managers
- Condo and association boards responsible for common roofs
- Owners preparing for insurance renewal or hurricane season
Not for: This is general commercial roofing and storm-preparedness guidance. It does not determine whether a particular roof is code-compliant, insurable, or structurally adequate. Those determinations require the appropriate roofing, engineering, building-code, and insurance professionals.
1. Ian Showed That Low-Slope Commercial Roofs Remain a Major Vulnerability
One of the most important lessons was the performance of low-slope commercial roof systems.
IBHS reported that low-slope commercial roofs experienced damage rates above 50% in its Southwest Florida assessment. Among roofs with identifiable damage, flashing and coping failures were particularly common. :chatgpt-content-reference{index=”1″}
This matters because many Fort Myers and Naples commercial buildings rely on low-slope systems such as TPO, PVC, modified bitumen, built-up roofing, and other membrane assemblies.
The roof membrane itself is only one part of the system. The perimeter, transitions, penetrations, flashings, coping, drains, and attachment system all have to perform together.
2. Roof Edges and Flashings Deserve Special Attention
Hurricane Ian reinforced the importance of perimeter details.
IBHS found that many damaged low-slope commercial roofs also had flashing or coping failures. Subsequent research examining low-slope roof performance has continued to identify edge metal as an important component because failures at the perimeter can lead to water intrusion and broader roof-system damage. :chatgpt-content-reference{index=”2″}
For owners, this means a hurricane-readiness inspection should not simply ask whether the membrane looks intact. It should specifically examine:
- Parapet coping
- Edge metal
- Perimeter flashing
- Membrane termination
- Fasteners
- Base flashing
- Penetrations
- Roof-to-wall transitions
- Equipment curbs
3. Newer Buildings Can Perform Better Without Being Damage-Proof
Another important lesson from Ian is that modern building codes made a meaningful difference.
IBHS found exceptional structural performance among buildings constructed under the modern Florida Building Code. In its commercial-building sample, only 1 of 45 modern-code commercial buildings showed visible structural damage. However, roof-cover and flashing problems were still observed. :chatgpt-content-reference{index=”3″}
That distinction is important.
Good structural performance does not mean zero roof damage.
A building can remain structurally sound while still experiencing:
- Membrane damage
- Open seams
- Flashing failures
- Coping damage
- Loose edge components
- Roof-cover damage
- Water intrusion
Owners should therefore evaluate both the building structure and the roof-cover assembly.
4. Roof Age Still Matters
Ian also demonstrated that older roof systems can be more vulnerable, particularly when materials have experienced years of Florida sun, heat, moisture, storms, and maintenance activity.
IBHS reported that older roofs were generally more vulnerable in its broader Southwest Florida assessment, while Gallagher Re observed that newer commercial roofs—especially metal roofs—performed well compared with older roof systems in the Fort Myers and Naples region. :chatgpt-content-reference{index=”4″}
Commercial owners should therefore maintain accurate records of:
- Original installation date
- Replacement date
- Roof-system type
- Previous repairs
- Restoration or coating projects
- Warranty information
- Previous storm damage
- Inspection findings
- Remaining useful life estimates
5. Installation Quality Matters as Much as the Product
Ian also reinforced an important roofing principle: a specified roof system can still perform poorly if critical components are improperly installed, maintained, or connected.
Post-Ian assessments identified installation and component-performance issues in addition to material age. Research into low-slope roof performance has specifically raised questions about installation workmanship, inspection, enforcement, design assumptions, and edge-detail performance. :chatgpt-content-reference{index=”5″}
For commercial owners, that means roof documentation should go beyond the manufacturer’s product name. Keep records showing:
- Approved roof system
- Installation documentation
- Manufacturer requirements
- Fastening information
- Edge-detail information
- Inspection records
- Warranty inspections
- Repairs and modifications
6. The Roof Perimeter Can Be More Important Than Owners Realize
Commercial roof owners often focus on the middle of the roof because that is where the largest visible membrane area is located.
Ian demonstrated why that approach can be incomplete.
Edge and perimeter components experience significant wind pressures. Research following Ian found that flashing and coping damage remained a substantial source of low-slope roof damage even where modern code provisions applied. :chatgpt-content-reference{index=”6″}
Before hurricane season, owners should specifically document:
- Roof corners
- Perimeter edges
- Parapets
- Coping
- Metal flashing
- Membrane terminations
- Mechanical attachments
- Roof-to-wall transitions
7. Roof Penetrations Need Their Own Inspection
Commercial roofs contain numerous penetrations and rooftop systems that can create potential weak points.
Inspect:
- HVAC curbs
- Pipe penetrations
- Exhaust equipment
- Electrical penetrations
- Skylights
- Equipment supports
- Roof hatches
- Communication equipment
- Solar-related penetrations
The objective is to identify loose, deteriorated, improperly sealed, or otherwise vulnerable details before a storm exposes them.
8. Maintenance Is a Hurricane-Readiness Strategy
Ian also reinforced the importance of maintaining the roof before the storm arrives.
A preventive program should identify and correct:
- Open seams
- Deteriorated flashings
- Loose coping
- Damaged membrane
- Blocked drains
- Loose rooftop materials
- Failed sealants
- Damaged equipment supports
- Previous temporary repairs
Routine condition documentation gives owners a baseline. If damage is discovered after a hurricane, that baseline can help distinguish pre-existing deterioration from storm-related damage.
9. Pre-Storm Documentation Is Extremely Valuable
One of the most practical lessons for commercial owners is the value of having a documented roof condition before a major storm.
A useful pre-storm file can include:
- Current roof inspection
- Roof photographs
- Roof plan or roof map
- Known defects
- Repair history
- Maintenance records
- Roof age
- Warranty information
- Drainage documentation
- Recent contractor reports
After a hurricane, the owner can compare the post-storm condition against the documented pre-storm condition.
10. Post-Storm Inspections Should Be Systematic
Do not wait until an interior leak appears before inspecting the roof after a major hurricane.
A post-storm inspection should look for:
- Membrane damage
- Open seams
- Blisters or displaced materials
- Flashing damage
- Coping movement
- Loose edge metal
- Damaged penetrations
- Roof-cover displacement
- Drainage problems
- Debris impact
- Water intrusion
Photograph and map each significant finding so the property owner has a clear record of the storm’s effects.
11. Do Not Confuse Roof Damage With Structural Failure
Ian demonstrated that modern buildings can have strong structural performance while still suffering roof-cover and building-envelope damage.
IBHS found that modern Florida Building Code commercial buildings performed strongly structurally, but low-slope roof-cover and flashing problems remained widespread. :chatgpt-content-reference{index=”7″}
Therefore, an owner should not conclude that a building is “fine” simply because there is no obvious structural damage.
A roof can experience significant water-intrusion consequences without the primary structural frame failing.
12. Metal Roofs Provided an Important Performance Lesson
IBHS found that metal roofs performed particularly well in its Southwest Florida assessment, with damage rates around 12% in the studied sample; many of the observed problems were associated with nearby structures rather than failure of the metal roof itself. :chatgpt-content-reference{index=”8″}
That does not mean metal is automatically the right roof for every commercial building. It does demonstrate that roof-system selection, attachment, detailing, installation, and maintenance can materially influence storm performance.
Owners should evaluate roof systems based on:
- Wind exposure
- Building geometry
- Roof slope
- Roof attachment
- Edge details
- Expected service life
- Maintenance requirements
- Insurance considerations
- Lifecycle cost
13. Insurance Documentation Should Start Before the Hurricane
Storm documentation is much stronger when it can be compared with an established pre-loss record.
Keep copies of:
- Prior roof inspections
- Pre-storm photographs
- Maintenance invoices
- Repair records
- Roof replacement records
- Permits
- Warranty documents
- Contractor reports
- Roof condition assessments
After a storm, preserve the original photographs and records rather than replacing them with a new “current condition” file.
14. What Ian Means for Fort Myers and Naples Owners Today
The biggest lesson is not simply that Hurricane Ian was powerful. It is that commercial roof performance is a system issue.
A roof’s storm performance depends on the interaction of:
- Roof-cover material
- Attachment method
- Seams
- Flashing
- Coping
- Perimeter details
- Penetrations
- Drainage
- Installation quality
- Maintenance
- Building-code requirements
- Age and deterioration
Ian showed that improvements in the Florida Building Code can significantly improve structural performance, but roof-cover and edge-component vulnerabilities still deserve focused attention. :chatgpt-content-reference{index=”9″}
15. What Commercial Owners Should Do Before the Next Major Storm
- Schedule a comprehensive commercial roof inspection.
- Document roof age and remaining useful life.
- Inspect flashings, coping and perimeter details.
- Check seams and membrane condition.
- Inspect penetrations and rooftop equipment.
- Clean and inspect drainage systems.
- Correct known deficiencies before hurricane season.
- Review manufacturer warranty requirements.
- Maintain current roof photographs.
- Keep repair and maintenance records organized.
- Establish a post-storm inspection procedure.
- Know who will respond if the roof is damaged.
Bottom Line
Hurricane Ian taught Fort Myers and Naples commercial owners that modern construction can substantially improve structural resilience, but the roof still requires focused inspection and maintenance. Low-slope commercial roofs experienced significant damage in the Southwest Florida assessment, and flashing and coping failures were prominent among damaged systems. At the same time, modern-code commercial buildings generally demonstrated strong structural performance. :chatgpt-content-reference{index=”10″}
The practical takeaway is to inspect the entire roof assembly—not just the membrane—before the next storm. Document the condition while the roof is intact, correct vulnerable details, maintain drainage, preserve repair records, and establish a repeatable pre- and post-storm inspection process.
Related Questions
- What is the importance of a wind mitigation inspection for commercial roofs?
- What should you do when an underwriting inspection flags deteriorated flashings?
- What should you do when an underwriting inspection flags roof debris or drainage problems?
Sources
- IBHS — Observations of Building Performance in Southwest Florida During Hurricane Ian: Part I — Roof Cover Damage Assessment
- IBHS — Part II: Performance of the Modern Florida Building Code
- IBHS Research — The Performance of Low-Slope Roofs During Hurricane Ian
- Gallagher Re — Assessment of Damage Caused by Hurricane Ian
- ICC — Hurricane Ian in Florida: A Mitigation Success Story for Building Codes
Last reviewed: October 2026
Related Resources
How Often Should Commercial Roofs Be Inspected in Florida?
Need Commercial Roofing Help?
ShieldLine Roofing can help Fort Myers, Naples, and Southwest Florida commercial property owners inspect roof systems, document pre-storm conditions, identify vulnerable details, and develop maintenance and repair plans before the next major weather event.
Disclaimer: This information is provided for general educational purposes and is not insurance, legal, engineering, underwriting, building-code, or coverage advice. Hurricane damage and roof performance vary by property, construction, exposure, roof system, and storm conditions. Consult qualified roofing, engineering, building-code, and insurance professionals for property-specific decisions.
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