How to Prevent Mold in the Shower


Mold grows in humid, damp places, such as your shower. Not only is a moldy shower unappealing to look at, the Centers for Disease Control and Prevention note that excessive exposure to mold by those that are sensitive can cause adverse health effects. Fortunately, there are steps that you can take to prevent shower mold.

Things You'll Need

  • Chlorine bleach
  • Water
  • Rags
  • Exhaust fan
  • Empty spray bottle
  • White vinegar
  • Dehumidifier
  • Low-energy light bulbs
  • Caulk (optional)
  • Remove existing mold from the shower. Scrub the shower tiles, grout and caulk with a solution of equal parts chlorine bleach and water. Let the bleach solution sit on the moldy areas for a few minutes before rinsing with plain water. Dry the shower promptly with clean rags.

  • Wipe down the shower walls and doors after each use. Do a quick wipe down with a dry towel to remove excessive moisture from the shower.

  • Use an exhaust fan in the bathroom. Keep the fan on while taking a shower and for about 15 minutes after showering.

  • Open the bathroom window, if you have one. Crack the window as often as possible to allow fresh air to circulate. Leave the door to the bathroom open for a while after showering. This will also help to increase air circulation.

  • Keep window blinds up or curtains pulled back in the bathroom windows. This will allow light to shine in. Sunlight is a natural mold inhibitor. If there is no window in the bathroom, install low-energy light bulbs in the bathroom and leave them on for about 10 minutes after showering.

  • Spray down the shower walls, the shower curtain, floor, doors and tile with undiluted white vinegar. Do this a couple of times a week to prevent mold from growing. Do not rinse the vinegar from the shower.

  • Keep wet rags and towels out of the shower and off of the shower floor. Leaving a wet rag sitting inside of the shower will promote mold growth.

Tips & Warnings

  • Use a dehumidifier inside your home. This will help to prevent mold growth throughout the entire home, including the bathroom.
  • If there is mold growth on the caulk in your shower, it may not come out. If this is the case, remove and replace the old caulk.
  • Wear rubber gloves and old clothing that covers your skin when using chlorine bleach. Use bleach in a well-ventilated area.
  • Never mix bleach and ammonia, or products containing these ingredients. This mixture produces toxic fumes.

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  • Photo Credit shower image by Dragan Trifunovic from
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