How to Remove Mold in a Bathroom or Shower

Why does mold grow in bathrooms and showers?

Showers produce steam and splashed water. Grout is porous, caulk can fail and let water behind tile, and a weak exhaust fan leaves humid air in the room. Together these keep surfaces damp long enough for mold to grow.

How do you remove mold from shower grout and caulk?

Scrub with detergent and water and dry the surface completely, following EPA guidance for hard surfaces. Wear gloves and ventilate the room. Mold that is embedded in old caulk is often easier to fix by cutting out and replacing the caulk than by scrubbing it.

How do you clean mold off a bathroom ceiling?

Painted ceiling surfaces can be scrubbed and dried. Stains that return, paint that bubbles or drywall that feels soft point to a moisture source above, such as a fan venting into the attic or a leak.

How do you tell if mold is behind the shower wall?

Loose or cracked tile
A spongy or soft floor near the tub
A musty smell that stays after cleaning
Dark staining that returns at the same spot
Peeling paint on the other side of the wall

How do you keep bathroom mold from coming back?

Run the exhaust fan during and after showers
Make sure the fan vents outdoors and not into the attic
Fix dripping fixtures and failed caulk quickly
Keep indoor humidity below 60%, ideally 30 to 50%
Wipe wet surfaces so water does not sit

When is a bathroom mold problem a professional job?

If the growth is larger than about 10 square feet, has spread into drywall or the subfloor, or returns after cleaning, it is better handled by professionals so damaged material can be removed under containment.

Next steps and related help

If you would rather have a professional handle it, these are the services that apply:

Emergency Bathroom Mold Removal in Littleton, CO: Remediation for mold behind tile, under vanities and around tubs and showers.
Emergency Ceiling Mold Removal in Littleton, CO: Mold on ceilings from roof leaks, bathroom steam, upstairs plumbing and condensation.
Emergency Mildew Removal in Littleton, CO: Removal of mildew from walls, ceilings, fabrics and framing, with the humidity problem behind it.

Keep reading:

We help homeowners in Littleton, Southeast Littleton and Centennial, Columbine, Columbine Valley and Bow Mar, Ken Caryl, Highlands Ranch, Roxborough. Call (303) 555-0142 or request a free estimate, or go back to the ZoneGuard home page to see everything we do. We do mold remediation only, so any testing or clearance sampling is done by an independent assessor.

Frequently asked questions

How do I get rid of mold in the shower?

Scrub hard surfaces with detergent and water, dry them completely, replace failed caulk and run the exhaust fan so the shower dries.

How do I remove mold from bathroom ceiling?

Scrub and dry painted surfaces. If stains return or the ceiling is soft, there is a moisture source above that needs to be fixed.

How do I clean mold from shower grout?

Use detergent and water, scrub, rinse and dry. Because grout is porous, recurring growth often means water is getting behind it.

How do I remove mold behind a shower wall?

Mold behind a shower wall means water is getting behind the tile. The wall has to be opened, damaged material removed and the leak repaired before rebuilding.