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Home / Cleaning Guides / Kitchen & Bath / Kitchen and Bathroom Surfaces / How to Clean Mold/Mildew from Sealed Natural Stone Shower

How to Clean Mold/Mildew from Sealed Natural Stone Shower

Table of Contents:
  1. You Will Need
  2. Steps to Remove the Mold and Mildew
  3. Additional Tips and Advice

Amy asked: How do I clean mold and mildew from a sealed, natural stone shower? We have remodeled and used natural stone. The stone is sealed, but since it is natural, it has “artifacts” that are pits/holds in the stone. This collects mold and mildew. Most commercial products say “not for natural stone.” I use a hard brush, and I try to squeegee the shower walls, but still, there is some mold on the stone and grout.

Natural stone is attractive, durable and relatively easy to care for, especially if it has been properly sealed. In the case of sealed natural stone in the shower, removal of mold and mildew is simply a matter of getting the right product for the job. Here’s a no-scrub method that makes cleaning almost effortless!

You Will Need:

  • MarbleLife Mold & Mildew Remover for Stone
  • Cool water for rinsing

Steps to Remove the Mold and Mildew:

  1. Before you begin, be sure to protect nearby non-masonry surfaces from overspray. You should also spot test the product in a hidden area before first use.
  2. Spray the mildew remover (MarbleLife Mold & Mildew Remover for Stone) onto the mold and mildew areas, holding the bottle 2-4 inches from the surface.
  3. Allow the spray to sit on the stains for 5 minutes.
  4. Rinse well with cool water.
  5. If needed, wait 30 minutes and repeat.

Additional Tips and Advice

  • Another option is to use a degreaser diluted with hot water. Combine 10 parts water to 1 part degreaser. Use a scrub brush with plastic bristles to apply the mixture to the stains and scrub them away. Make sure the product you use is safe for stone and spot test before you begin.
  • Although it’s often suggested as a way to eradicate mold and mildew, bleach is not a good option for stone. Use of bleach may result in fading or discoloration of stone, grout and/or nearby surfaces.

Cleaning Guides, Kitchen and Bathroom Surfaces

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About the Author

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Susan

I'm a stay-at-home mom who used to run a small housecleaning business. These days I consider myself more or a mad cleaning-scientist. I do most of the testing for our articles - as well as helping Mark & Melanie write them.

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Comments

  1. Whitney says

    November 13, 2015 at 9:15 am

    I have natural stone in my shower and the bathroom and limited ventilation. I’m constantly trying to clean the mold/mildew from the shower with no great solution. I knew I wasn’t supposed to, but used a mold/mildew remover (Tilex) with bleach because I was sick of feeling unclean in my shower, and now I have stone that feels unsealed and stained. Is there an easy fix?

    Reply
    • Brandy says

      October 8, 2017 at 9:55 pm

      You can go to a hardware store and buy stone sealant. Easy to apply and not that expensive. I am a pro housecleaner. I use it on client’s stone when needed. Will work wonders on keepibg things clean as well. Like Teflon on pans.

      Reply
  2. Stacey says

    September 11, 2016 at 12:54 am

    After removing mold, remember to dry out the shower each time after use. This will stop mold growth permanently. Dry walls and flooring completely after every use.

    Reply

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