Direct Answer
A facility manager should treat the manufacturer roof warranty as an ongoing compliance responsibility, not simply a document received after installation. The exact requirements depend on the roofing manufacturer, roof system, warranty or guarantee type, and the terms issued for that specific building.
In general, the facility manager should:
- Keep the original warranty, guarantee number, roof system specifications, installation records, and manufacturer documentation.
- Confirm that the warranty was properly registered and remains active.
- Follow the manufacturer’s required inspection and preventive maintenance schedule.
- Keep detailed records of inspections, maintenance, repairs, photographs, leaks, and corrective actions.
- Use qualified or manufacturer-approved contractors when the warranty requires them.
- Obtain written manufacturer approval before making roof modifications, additions, penetrations, equipment installations, or other alterations when required.
- Prevent unauthorized trades from damaging the membrane, flashings, penetrations, drains, or other roofing components.
- Maintain drainage systems and address ponding water or other conditions that could threaten roof performance.
- Respond promptly to leaks, damage, and manufacturer inspection findings.
- Keep rooftop access controlled and documented.
- Document emergency repairs and follow up with permanent corrective work.
- Verify that any work performed on or around the roof does not conflict with the warranty requirements.
For example, GAF’s commercial warranty documentation requires regular inspections and maintenance with records retained, and certain modifications, additions, repairs, or overburden require prior written approval. GAF also identifies conditions such as inadequate maintenance, incompatible materials, certain roof traffic, ponding water, and unauthorized modifications as potential exclusions depending on the specific warranty. :contentReference[oaicite:0]{index=0}
The safest approach is to create a roof warranty compliance file for each building and manage the roof according to the exact manufacturer’s warranty rather than relying on a generic maintenance schedule.
Who This Applies To
This guidance is primarily for facility managers, property managers, building engineers, operations teams, asset managers, and owners responsible for commercial properties with an active manufacturer roof warranty or guarantee.
Not for: deciding whether a roof should be repaired, restored, or replaced solely based on warranty status. Warranty compliance and roof condition are related but separate management questions.
1. Start With the Actual Warranty Document
Do not assume that every commercial roof warranty has the same requirements. The facility manager should obtain the exact warranty or guarantee issued for the roof and identify:
- Manufacturer name
- Warranty or guarantee number
- Effective date
- Expiration date
- Roof system covered
- Approved installer requirements
- Inspection requirements
- Maintenance requirements
- Repair requirements
- Modification and alteration requirements
- Warranty exclusions
- Transfer requirements
- Manufacturer notification requirements
GAF, for example, states that its commercial limited warranties and guarantees must be registered according to its registration requirements. Its individual warranty documents should then be reviewed for the specific coverage conditions and restrictions. :contentReference[oaicite:1]{index=1}
2. Maintain a Documented Inspection Program
Regular inspection is one of the most important facility-management responsibilities. A facility manager should not rely on someone simply saying that the roof was inspected.
Each inspection should produce a record showing:
| Record | What to Document |
|---|---|
| Date | Inspection date and time |
| Inspector | Name and company |
| Roof area | Building, section, roof system, and location |
| Condition | Membrane, seams, flashings, edges, penetrations, curbs, drains |
| Deficiencies | Damage, deterioration, ponding, debris, loose components, leaks |
| Photographs | Condition evidence and repair documentation |
| Corrective action | What was repaired or recommended |
| Follow-up | Whether the issue was verified as corrected |
Manufacturer maintenance programs can be considerably more detailed than simply checking whether the roof leaks. GAF’s published maintenance checklist, for example, includes drainage components, flashings, penetrations, roof edges, HVAC interfaces, ponding water, debris, physical damage, and other conditions. :contentReference[oaicite:2]{index=2}
3. Keep Every Maintenance and Repair Record
A facility manager should maintain a chronological roof history rather than keeping only invoices.
The file should include:
- Inspection reports
- Maintenance reports
- Repair proposals
- Approved work orders
- Invoices
- Before-and-after photographs
- Leak investigation reports
- Moisture investigation results when applicable
- Manufacturer correspondence
- Contractor correspondence
- Warranty service requests
- Documentation of completed corrective actions
This creates an auditable history showing that the facility team identified problems, responded to them, and maintained the roof in accordance with the applicable requirements.
For additional guidance, see What Roof Records Should a Property Manager Keep?.
4. Get Written Approval Before Roof Modifications
This is one of the most important warranty-management rules.
Facility managers frequently add or replace:
- HVAC equipment
- Electrical equipment
- Solar installations
- Communications equipment
- Pipe supports
- Mechanical penetrations
- Equipment platforms
- Walkway systems
- Other rooftop equipment or overburden
These changes can affect the roofing system. The facility manager should therefore determine whether manufacturer approval is required before the work begins.
GAF’s commercial warranty documentation specifically identifies changes in building use and repairs, additions, modifications, or installation of overburden as matters that may require prior written approval. :contentReference[oaicite:3]{index=3}
Do not rely on a contractor’s verbal statement that an alteration will not affect the warranty. If manufacturer approval is required, obtain it in writing and retain it in the roof warranty file.
See also Does Adding Rooftop Equipment Void an Existing Warranty?.
5. Control Rooftop Access
Every trade accessing a commercial roof creates an opportunity for accidental damage.
A facility manager should establish:
- Authorized access procedures
- Designated access points
- Roof access logs
- Approved walking routes
- Protected paths near frequently accessed equipment
- Rules for tools and materials
- Procedures for reporting membrane damage
- Requirements for contractors working around penetrations and flashings
GAF recommends limiting rooftop access to necessary personnel and maintaining an access log documenting when other trades access the roof. :contentReference[oaicite:4]{index=4}
More detailed operational guidance is available in What Roof Access Rules Should Be Included in a Commercial Building Operations Manual?.
6. Maintain Drainage and Address Ponding Water
Roof drainage should be part of the preventive maintenance program.
Facility teams should regularly check:
- Roof drains
- Strainers
- Gutters
- Downspouts
- Scuppers
- Drainage paths
- Debris accumulation
- Ponding water
GAF’s maintenance checklist specifically includes gutters, drains, downspouts, scuppers, strainers, and proper drainage. Its warranty documentation also identifies conditions that prevent positive drainage or create ponding water as potential exclusions for applicable systems. :contentReference[oaicite:5]{index=5}
7. Use the Correct Contractor for Warranty Work
The warranty should be checked before assigning roofing work. Some manufacturer warranties require particular contractor qualifications or manufacturer-certified contractors for certain work.
For example, GAF’s Integrated System Limited Warranty specifies installation by a GAF Certified roofing contractor and contains additional requirements concerning maintenance and repairs. :contentReference[oaicite:6]{index=6}
The facility manager should therefore confirm:
- Whether the contractor is authorized for the applicable roof system
- Whether manufacturer certification is required
- Whether the work requires manufacturer notification
- Whether the proposed repair materials are compatible
- Whether the completed work needs manufacturer inspection
8. Respond Quickly to Leaks and Deficiencies
A warranty is not a substitute for active roof management. When a leak or significant deficiency is discovered, the facility manager should document the problem, protect the building interior, investigate the source, and arrange appropriate corrective action.
Some manufacturer guarantees expressly require certain threatening conditions to be repaired and state that failure to make timely repairs can jeopardize coverage. :contentReference[oaicite:7]{index=7}
See How Quickly Should I Respond to a Commercial Roof Leak? and How to Actually Find a Commercial Roof Leak.
9. Handle Emergency Repairs Carefully
A facility manager should not leave an active leak untreated simply because the manufacturer needs to be contacted first.
Some warranties allow reasonable temporary emergency repairs intended to minimize damage, subject to the specific warranty language. GAF documentation, for example, addresses temporary emergency repairs and requires that they not permanently damage the roofing materials. :contentReference[oaicite:8]{index=8}
The facility manager should document:
- When the emergency occurred
- What caused or appeared to cause the problem
- What temporary action was taken
- Who performed the work
- Photographs before and after the temporary repair
- Manufacturer or contractor notification
- Permanent corrective action
10. Create a Roof Warranty Compliance Checklist
| Requirement | Facility Manager Check |
|---|---|
| Warranty registered | ☐ Warranty number and registration confirmation on file |
| Warranty terms reviewed | ☐ Current warranty document available |
| Inspections | ☐ Required inspection schedule followed |
| Maintenance | ☐ Required maintenance completed and documented |
| Repairs | ☐ Corrective work documented and completed promptly |
| Contractors | ☐ Required manufacturer-qualified contractor used |
| Modifications | ☐ Written manufacturer approval obtained where required |
| Roof access | ☐ Access controlled and documented |
| Drainage | ☐ Drains, gutters, scuppers and drainage paths maintained |
| Rooftop equipment | ☐ HVAC and other equipment interfaces inspected |
| Documentation | ☐ Reports, photos, invoices and correspondence retained |
| Warranty claims | ☐ Manufacturer notification requirements followed |
Related Questions
- What Documentation Should I Keep for My Commercial Roof Warranty?
- What Voids a Commercial Roof Warranty?
- Does Adding Rooftop Equipment Void an Existing Warranty?
- Does a Commercial Roof Warranty Cover Damage Caused by Other Trades on the Roof?
- How Often Should Commercial Roofs Be Inspected in Florida?
- When Is It Better to Replace a Commercial Roof Rather Than Repair It?
Sources
- GAF Integrated System Limited Warranty
- GAF Mission Critical Structure Roof Guarantee
- GAF Scheduled Maintenance Checklist
- GAF Roof Asset Management and Maintenance
- GAF Commercial Roof Warranties and Guarantees
Last Reviewed
September 25, 2026
Important: Warranty requirements vary by manufacturer, roofing system, warranty type, installation method, and individual warranty document. This page provides general facility-management guidance and should not be treated as a substitute for reviewing the actual warranty or guarantee issued for the property.
Related Resources
- What Roof Records Should a Property Manager Keep?
- Commercial Roof Warranty Documentation
- Commercial Roof Access and Safety Rules
- Replacing Rooftop HVAC Without Voiding the Roof Warranty
Need help organizing warranty records, inspections, and maintenance requirements? Contact ShieldLine Roofing to discuss your commercial roof.
