This is a difficult one and I feel sorry for you. If the river stones are what I think they are, same as used in dry stream beds in landscaping you have a difficult problem. First, unsure how ANY chemical is going to react with the stones, combination of igneous, sedimentary, limstone , porous, non-porous. etc. There must also be some irregular and quite a number of grout joints. My best bet would be to use something like the Kaivac washroom system and use a neutral cleaner. Spray on the wall and floor with a foam spray bottle, let sheet down the wall and wet vacuum off. Can't see using acidic based product for grout lines as may react with stones themselves. I look forward to other comments on this one.
Post by alisharanderson on Nov 25, 2010 21:08:34 GMT -5
Try baking soda and wet sponge or go to a tile shop and ask them which cleaning product they sell that is safe for marble. . It's also a good idea to buy a shower squeegy to wipe down the shower after you use it. This removes excess water and soap on the walls. Mold grows from the inside out, so if you have mold on your grout joints, then the joints are absorbing water and need to be sealed. After you get the shower cleaned, let it dry completly before you apply the sealer.
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