Follow the water path
Low-slope roof performance depends on more than the visible membrane. Ponding, drains and scuppers, seams, penetrations, curbs, edges, flashing, transitions, insulation, substrate condition, and earlier patches can affect the next decision. Interior leak locations may not sit directly below the exterior entry point.
What to share
Send the property type and location, known membrane or roof type, leak history, drainage concerns, prior repairs, rooftop equipment, safe access conditions, and any available roof documents. For an occupied commercial property, include operational access limits without assuming after-hours service.
Does a leak show where the roof failed?
Not always. Water can travel within an assembly before appearing inside. Inspection of accessible exterior and interior conditions helps narrow the source, while concealed conditions may require further investigation.