Black Mold Growing in the Bathroom? Here’s What to Do

 black mold pictures bathroom

Black mold can grow in a variety of places in a bathroom, such as here on the caulk of a bathtub.

Keeping every room clean is an important job, and you do it with pride. It helps make the house your home. You take care to keep everything fresh, so tackling an occasional mold outbreak in the bathroom is just another chore.

That ordinary routine sets off alarms when you encounter a dark, slimy growth that makes you wonder: Are you looking at black mold growing in the bathroom?

It’s not an ordinary fungus. It can quickly become a serious threat to your family’s health and your home’s infrastructure. We answer calls every day from homeowners who need mold remediation services, so we understand how disturbing it is to find black mold in your bathroom.

Let’s address the four questions we hear most often.

1. Is That Really Black Mold?

Stachybotrys chartarum usually appears as slick, dark green or black splotches. It’s hard to mistake the fungus for mildew, but you know for sure it’s mold if it fails the cotton swab and bleach test. The best way to be certain about any mold type is to have it tested by certified professionals.

2. How Does the Stuff Get Into My Home?

Mold migrates through the air outside and indoors as microscopic spores. It only needs a small amount of moisture to take hold, so the bathroom is a natural breeding ground for all kinds of fungi. No matter how well you clean the house, it’s almost impossible to prevent spores from making themselves at home.

3. How Do I Clean Up Black Mold Growing in the Bathroom?

Start the project by identifying the mold’s source of moisture. If you can’t fix the leaking pipe or dripping faucet, call in a plumber for repairs. Meanwhile, put together the things you’ll need to safely clean up the mold. We detail the necessary precautions in our post on DIY black mold removal.

Different areas of the bathroom clean up best with different techniques. A bleach and water solution works on most surfaces, but it’s good to have specially formulated products on hand too.

These are your most common DIY mold cleanup jobs in the bathroom.

Black Mold in the Toilet

picture of black mold growing in toilet

• Flush and drain as much water from the bowl as possible.
• Spray the affected surface with bleach, let set, then flush again.
• Using a toilet brush, scrub with your bleach and water solution.
• Flush, and repeat the above steps until the black mold is eliminated.

Power Tip: Safely dispose of the toilet brush when you’re finished. This final step applies to all sponges, scrubbers or rags used to clean up bathroom mold.

Black Mold in the Sink

black mold growing in old sink

• Thoroughly wet the mold by spraying with your bleach mixture.
• Scrub with a stiff brush, rinse well, and repeat until mold is gone.
• Pour 1 cup of white vinegar down the drain, and flush with hot water.

 

 

 

Black Mold on the Shower Head

mold on showerhead

• Remove the shower head, and soak it in a bowl of your cleaning solution.
• Meanwhile, scrub the shower arm’s threaded attachment end.
• Use a stiff brush to clean the shower head, and let dry before replacing.

Power Tip: Soak the shower head in place by filling a plastic bag with the bleach mixture and attaching it to the fixture with rubber bands or heavy tape.

Black Mold on Grout in the Shower

black mold on grout

Black mold fungus growing on bathroom tiles due to damp, poorly ventilated bath areas.

• Attack moldy grout with your bleach mixture and a stiff toothbrush.
• Let set for 30 minutes, and then rinse with warm water.
• Apply a paste of baking soda and water, and let set for 10 minutes.
• Scrub well with a bristle brush, and repeat steps until mold is removed.

 

 

4. When Should I Call a Mold Remediation Company?

If your DIY project covers an area larger than 3 square feet or you’re dealing with porous surfaces, call in certified mold removal specialists. You should also make that call if anyone in the house has health issues.

Let trained technicians tackle big jobs like black mold under the bathroom floor. They handle dangerous projects like black mold in the bathroom ceiling, and they take care of small plumbing repairs too. Your good judgement is your best guide, but don’t take unnecessary chances.

Always Be Careful

mold removal company

As the city’s most experienced black mold removal company, we know the fungus can take hold anywhere. When it happens in your bathroom, follow our guidelines, but always be careful. We’re happy to share information that makes a difference around your home, so let us know how we’re doing through our Comments Section.

If you decide the cleanup job is too big or risky, please don’t take any chances. We offer certified mold remediation services across Chicago and the suburbs, so give us a call. You can always trust ServiceMaster Restoration by Zaba to help you keep your home fresh, clean and healthy.

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