A drainage map identifies roof sections, flow directions where documented, outlets, and relevant downstream connections. It helps organize inspections and service records. Unknown routes should remain marked as unknown until verified.

What to do next

Start with available project drawings and professional observations. Label each drain or scupper consistently in reports. Update the map after changes so maintenance teams do not rely on outdated assumptions about where water is intended to travel.

Related Perkins guidance

Contact Perkins Roofing to discuss your roof and the appropriate next step.