FLAT & LOW-SLOPE ROOFING · GREATER MONTREAL514 556-2864
ALLIANCE ROOFING

Roof drain maintenance and water drainage

Accessible drains and outlets help with flat-roof maintenance. Debris, persistent water and overflows should be assessed to understand what is obstructing drainage.

Seam detail on a white membrane
From the Alliance Roofing portfolio

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.

Prepare your request

Share the building address, the issue you have observed and the roof type. We can discuss the information needed and options for a visit.

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PREPARE YOUR REQUEST

What to clarify before work starts.

  • Outlet locations and intended water path
  • Condition of strainers, connections and pipes
  • Follow-up after cleaning and rainfall