Accessible drains and outlets help with flat-roof maintenance. Debris, persistent water and overflows should be assessed to understand what is obstructing drainage.
Observe signs without climbing onto the roof
Overflow, new stains and a history of blockage are useful clues. Do not remove an obstruction if doing so requires unsafe access. Report the conditions and weather when calling.
Distinguish maintenance from slope issues
Removing debris may clear a local obstruction; it does not correct a depression in the substrate. Recurring ponding may call for a slope or drainage-system assessment. Plumbing work should be coordinated with the relevant professional.
Document follow-up
Keep photographs and intervention dates. Following roof work or significant weather, check for new signs from a safe location. A clear history helps target the next assessment.
Points to assess
- Debris and access to outlets
- The membrane-to-drain connection
- The distinction between a roof defect and a blocked pipe