Commercial Roof Maintenance Checklist

Why a maintenance program matters

Commercial roofs fail slowly, then suddenly. A drain that's been slow for a year becomes standing water that stresses a membrane; a small flashing gap becomes a ceiling stain in a tenant space. A scheduled maintenance visit catches these while they're a caulk-and-note fix, not an emergency call.

Drainage

• Clear debris from drains, scuppers, and gutters.
• Check for ponding water beyond [confirm acceptable ponding duration per membrane manufacturer] after rainfall.
• Confirm downspouts and overflow drains are unobstructed.

Membrane & roof surface

• Inspect for blistering, punctures, seam separation, or granule loss depending on system type (TPO, EPDM, modified bitumen).
• Check coating condition if the roof has a fluid-applied coating.
• Note any foot-traffic wear near rooftop equipment access paths.

Flashing & penetrations

• Check flashing at parapet walls, curbs, and roof-to-wall transitions.
• Inspect pipe boots, vents, and any solar or HVAC penetrations for cracked or shrunk sealant.
• Confirm counterflashing is intact where applicable.

Rooftop equipment

• Check condensate lines from HVAC units aren't draining directly onto the membrane.
• Confirm equipment curbs and pads haven't shifted or separated from the roof surface.

Documentation

Every visit should produce a dated report with photos — not just a verbal "looks fine." That record is what protects you at renewal, at sale, and if a storm claim ever comes up later. See our Commercial Roof Inspection Checklist for the full inspection-report structure we use.