A drainage problem may be on the roof, at the connection or inside the pipe. Separating these areas avoids confusing cleaning with waterproofing repair.
Observe without climbing onto the roof
Record when water collects, whether drainage changed and whether an unusual outlet starts flowing. Photograph from a safe location and note the last rainfall. Accumulation with deformation, unusual noises or major leakage warrants prompt assessment. A depth estimated from a photograph cannot determine roof capacity.
Separate three checks
The first check concerns debris, strainers and surface water paths. The second examines waterproofing at the drain connection. The third addresses the pipe and discharge, which may require a plumbing professional. Water remaining away from a working drain calls for separate review of geometry or substrate deformation. A new drain alone does not create slope.
Plan maintenance and overflow management
An overflow or scupper belongs to a specific design; it should not be blocked because it appears secondary. For gutters, check the complete path to discharge. Clarify safe access, maintenance suited to site debris and signs to report. Changes to discharge or water retention need validation for the building and municipality.
Prepare for your project
- Outlet locations and intended water path
- Condition of strainers, connections and pipes
- Follow-up after cleaning and rainfall
Your questions
Does cleaning the strainer fix all ponding?
No. The pipe may be blocked or water may not reach the outlet. The connection can also leak while drainage works.
References for further reading
SOPREMA — Drain de réfection SOPRAFLOW ALU RFAssociation canadienne des entrepreneurs en couverture — DépannageConsult the exact product documentation and address-specific requirements. This guide helps prepare a project; it is not an estimate or design specification.
What about your property?
Turn this guide into a request describing your actual situation.
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