Mold Behind the Bathroom Vanity? You're Not Alone

Mold Behind Bathroom VanityBathroom mold is more common than most homeowners realize. With constant moisture, high humidity, and limited ventilation, bathrooms provide the perfect environment for mold to grow. While we often notice mold around tubs, showers, or tile grout, one hidden area many people overlook is behind or beneath the vanity cabinet.

That’s exactly what we uncovered during a recent job at MacFawn Fire & Flood Restoration. What began as a call about “black spots” and even mushrooms growing near the carpet quickly revealed a much larger, ongoing issue behind the vanity — out of sight and undetected for quite some time.

How to Check for Water Leaks in Your Bathroom:

Undetected plumbing leaks are one of the most common causes of hidden mold growth. Here are several ways you can check your home and bathroom for signs of a water leak.

    • Check the pressure relief valve on your hot water heater.
    • Listen for hissing or water flow in your toilet tank with the lid removed.
    • Inspect the main water line running from your meter to the house.
    • Shut off the water at the house and watch the meter — if it stops, the leak is likely inside.
    • Examine the shower head and connections for slow drips.
    • Pay attention to odor — mold and old moisture often produce a musty smell.
    • Inspect the floors for discolored grout, stains, or warping.
    • Look under cabinets for signs of water damage like bubbling finishes, warping, or delamination.

What To Do When You Find Mold:

If you suspect or discover mold in your bathroom — especially in hidden areas — the safest and smartest step is to call in a certified mold remediation professional.

At MacFawn Fire & Flood Restoration, we take mold seriously. Our trained technicians will assess the damage, identify the source of the moisture, and guide you through next steps. In some cases, we may recommend an industrial hygienist for air quality or surface testing, depending on the extent and nature of the mold growth.

Mold removal is not a DIY job. It requires proper containment, protective equipment, and remediation techniques to prevent cross-contamination throughout your home. That’s why we’re here — fully licensed, insured, and experienced in safe, effective mold remediation.

Notice something suspicious behind your vanity, under your cabinets, or in your bathroom?


Don’t wait — contact MacFawn Fire & Flood Restoration today for a professional inspection and peace of mind.