A moisture problem can have several causes, but it’s essential to distinguish between a drinking water leak and water infiltration. A leak is usually caused by a damaged pipe or faulty fitting, while an infiltration is caused by external moisture seeping through walls, roofs or foundations. Correctly identifying the source can help you avoid unnecessary repairs and take effective action.

Recognizing a drinking water leak

A drinking water leak concerns the supply circuit and can be visible, such as a leak under a sink, or invisible when hidden behind a wall or under a floor. Abnormal water consumption is often the first clue. A simple test is to check whether the meter is running when all the taps are turned off. Localized dampness on a wall, accompanied by stains or cold walls, can also indicate a leaky pipe. Some trickling noises, especially at night, are also revealing.

Identifying water infiltration

Infiltration is caused by external moisture entering the building, particularly after bad weather. Unlike drinking water leaks, which are constant, dampness caused by infiltration varies according to the weather. It often manifests itself as irregular stains on walls, peeling paint or plaster, and persistent moldy odors. In basements or at the foot of walls, damp ground may indicate capillary rise, a sign of poor waterproofing.

Check the source of the problem

A quick test is to read the water meter, then stop using water for a few hours. If the number changes, it’s probably an internal leak. Observing the walls and ceilings after a rainfall can also show if the humidity varies, which is typical of infiltration. For more precise confirmation, tools such as a thermal imaging camera can be used to identify a concealed leak, while a moisture meter assesses the humidity of materials to detect infiltration.

Call on Leader Services

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Conclusion

Drinking water leaks usually result in abnormal consumption, localized dampness and sometimes the sound of running water. Infiltration, on the other hand, is often irregular, weather-dependent and accompanied by mold. A precise diagnosis allows you to act quickly and avoid unnecessary repairs. When in doubt, a professional equipped with the right tools can pinpoint the source of the problem.