My bathroom has mold. Can I just paint over it?

No, you should never paint over mold. Painting over mold doesn't eliminate it - the mold will continue growing underneath the paint and can cause the new paint to peel, bubble, or discolor within weeks or months.

Mold must be properly removed before any cosmetic work. The underlying moisture problem needs to be identified and fixed, or the mold will return. Simply covering mold with paint can actually make the problem worse by trapping moisture and creating an even better environment for mold growth behind the paint film.

In Ottawa's climate, bathroom mold is common due to high humidity and temperature fluctuations. The most effective approach involves removing the moldy materials (drywall, caulking, or other affected surfaces), treating the area with appropriate antimicrobial solutions, fixing any ventilation or moisture issues, and then properly preparing and painting the surface. This often requires removing sections of drywall down to the studs if the mold has penetrated deeply.

For extensive mold problems, professional remediation is recommended. Small surface mold on painted walls might be cleanable with proper protective equipment and antimicrobial cleaners, but mold that has penetrated drywall or appears repeatedly indicates a more serious moisture problem. Poor ventilation, leaking plumbing, or inadequate vapor barriers are common culprits in Ottawa bathrooms.

The key is addressing the root cause - whether that's installing a proper exhaust fan, fixing leaks, improving insulation, or upgrading ventilation. Once the moisture source is eliminated and contaminated materials are properly removed, then you can prime with a mold-resistant primer and paint with bathroom-appropriate paint. For significant mold issues or if you're unsure about the extent of the problem, consider having a professional assessment to ensure your family's health and prevent costly damage down the road.

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