A leaking gutter joint may need a localized compatible repair. A gutter that regularly overflows also needs its blockage, alignment, outlet, or capacity problem investigated.

What to check first

  • Look for loose joints and failed end caps.
  • Check for standing water and debris at outlets.
  • Avoid covering a drainage opening with fleece or sealant.

Separate a leak from a drainage problem

  1. Trace the water route

    Follow water from the roof surface through the inlet and toward the discharge point. Inspect normal drainage and any separate overflow provision.

  2. Check the waterproof connection

    A sound pipe does not prove the membrane-to-drain connection is sound. Look for loose components, separation, damaged flashing, or patch buildup around the inlet.

  3. Preserve the opening

    A compatible local repair must not reduce the effective outlet or cover its strainer. Persistent ponding, backup, or changes to drain location and size need building-specific professional assessment.

From the project archive

Gutters on Flat Roofs and Drainage - Gutters accumulate debris very fast if tree branches hang over the roof.
Historical project photo · Flat Roof Doctor
Gutters and Flat Roofs - Important Drainage System - Gutters with built up of ice and icicles often break.
Historical project photo · Flat Roof Doctor

Product reference: Bergstrom Industries’ published knowledge catalog. Follow the latest product label and safety information. Historical project examples are educational and are not a specification for every roof.