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TSG Roofing

THE SERVICE GROUP · COMMERCIAL & MULTIFAMILY ROOFING

Commercial roof leaks reported near rooftop HVAC equipment

Document a commercial roof leak reported near an HVAC unit without assuming the source. Organize observations, rooftop records, access, and trade coordination.

Tell us about your property

Begin with the reported symptom, not a diagnosis

Record where water, staining, odor, or damaged finishes were observed and when the condition appeared. Note recent rain, wind, freeze-thaw conditions, and whether the HVAC equipment was operating, if those facts are known. A ceiling symptom below or near a rooftop unit does not by itself establish whether the source is the roof, equipment, condensate system, another penetration, or water moving within the building assembly.

Identify the building, roof area, and equipment

Provide the property address, building, floor, room or unit, and a recognizable interior location. If rooftop equipment is labeled, include the unit identifier without guessing. Record the roof system if known, the equipment curb or support configuration, nearby pipes or conduits, drains or scuppers, walkways, and previous repair areas. These details help connect the report to the correct roof area for review.

Preserve the recent service history

List recent HVAC service, equipment replacement, electrical or plumbing work, roof repairs, storms, and prior leak reports near the area. Keep work orders, vendor notes, photographs, and dates with the building record. Rooftop equipment and its service lines can introduce curbs, penetrations, supports, and foot traffic, so changes around the unit are relevant even when they do not prove the cause of the leak.

Review the roof-to-equipment interfaces

An appropriate assessment may include the roof membrane or surface, curb flashings, seams, corners, penetrations, sealants, equipment supports, nearby repairs, drainage, and visible condensate routing. The applicable details depend on the installed roof and equipment. Manufacturer guidance treats penetrations and flashings as system-specific details, so an internet checklist should not be used to select a patch or alter the assembly.

Coordinate roofing and mechanical responsibilities

A useful investigation may require information from both roofing and HVAC personnel. Define who is reviewing the equipment, condensate components, roof interfaces, and interior conditions, and ask each party to document what was observed or changed. Avoid authorizing one trade to modify another system without an agreed scope, applicable qualifications, and review of manufacturer or warranty requirements.

Protect the roof during equipment service

Document the approved access route, roof-access procedure, walk pads if present, safety requirements, and how tools, panels, filters, fasteners, and debris will be controlled. GAF maintenance guidance identifies foot traffic and rooftop work among conditions worth monitoring. If service work disturbs the roof or flashing, record the location and notify the appropriate property contact rather than leaving the change undocumented.

Separate findings, temporary measures, and approved work

Keep the reported symptom, assessment findings, temporary measures, proposed roof work, proposed HVAC work, authorizations, and completed work as separate entries. A temporary measure should not be recorded as a permanent repair. If a manufacturer warranty may apply, preserve the current warranty documents and contact requirements before repairs are authorized.

Prepare a clearer service request

Submit the exact property and affected space, dates and weather observations, equipment identifier if known, roof system if known, recent vendor work, previous repairs, access procedure, occupied-area concerns, and authorized contact. Mention available photos and records. The Service Group reviews coverage, scope, access, and availability before a visit or work is confirmed.

Technical references

Always check the current manufacturer documents and the warranty terms for your specific roof.

Questions before you request service

Does a leak below an HVAC unit mean the roof flashing failed?

Not necessarily. The location is useful evidence, but the roof, equipment, condensate components, penetrations, and possible water movement may all require review before the source is identified.

Should I call a roofer or an HVAC contractor first?

Begin with the available evidence and the property's normal service process. Depending on the symptoms and recent work, coordinated review by roofing and mechanical personnel may be appropriate.

Can maintenance staff add sealant around the unit?

Do not assume sealant is the correct or compatible repair. Roof access and repairs should follow property safety procedures, the installed system's requirements, applicable qualifications, and any warranty process.

What photographs are useful?

Safely obtained interior photos should show the affected area and a wider view that identifies the room or unit. Roof photos should be taken only by authorized personnel following site safety procedures and should include context rather than only a close-up.

Can I request service without knowing the roof system or unit number?

Yes. Provide the property, building, affected interior space, observations, dates, access contact, and any available records. Mark unknown details as unknown rather than guessing.

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