Roof Water Infiltration
Why Is Your Roof Still Leaking After the Repairs?
A visible infiltration inside a commercial building can originate several metres away on the roof. Gestion Defcor performs independent roof water infiltration diagnoses in Montreal, on the South Shore, and across Quebec — to identify the real cause, not patch a symptom.
A Repaired Infiltration… That Comes Back
Water appears at the ceiling, a roofer intervenes, the invoice arrives — and three months later the stain is back. This cycle almost always has the same cause: the real source of the infiltration was never found.
Signs that the problem is misdiagnosed:
- The leak returns after every repair
- Water appears only during heavy rain or specific wind conditions
- Several areas of the ceiling are affected with no apparent logic
- The roofer finds nothing visible but the problem persists
The Defcor Approach
Gestion Defcor acts as an independent roofing infiltration consultant — with no ties to contractors and no interest in selling a re-roofing project. Our sole objective is to precisely identify the origin of the problem. Our diagnostic process:
- Interior Analysis: Locating and documenting signs of infiltration
- Complete Exterior Inspection: Membrane, flashings, drains, parapets, penetrations
- Specialized Tools as Needed: Hygrometric analysis, targeted exploratory cuts
- Professional Report:
Probable cause, urgency level, recommended corrective measures
When the Eye Isn't Enough
Some infiltrations originate from areas invisible to a simple visual inspection — moisture trapped beneath the membrane, misinterpreted condensation, a deficiency hidden under a prior repair. In these cases, we deploy specialized analysis tools to confirm or rule out field hypotheses.
Other Legitimate Triggers
A water infiltration in a condominium or institutional building can engage liabilities, trigger an insurance claim, or reveal a systemic deficiency across the entire roof.
Situations where an independent diagnosis becomes essential:
- Insurance Claim: A credible report documents the cause and the damages
- Dispute Between the Association and the Contractor: A neutral opinion establishes technical responsibilities
- Building Purchase: Validate the condition of the roof before signing
- Infiltration in Multiple Units:
Distinguish a localized problem from a widespread failure
Bill 16 requires an up-to-date maintenance logbook for your condominium.
An undocumented infiltration can expose you to avoidable liabilities.
