When marble is damaged.
Bleach damage marble.
Bleach is alkaline so it doesn t pose the big risk of acidic cleaners which dissolve sensitive stone including marble.
You can remove mold with a diluted bleach or peroxide solution but it s best.
Bleach can be used sparingly in certain situations in a very very dilute solution but more often than not people get the mix wrong and etch their marble.
The damage from bleach stems from an entirely different characteristic.
Almost every guide for the care and maintenance of marble warns that you should not use bleach vinegar or other harsh cleaners.
Before you apply the diluted bleach it is important to thoroughly wet the area with clean water.
This includes brand name cleaners as well.
Most commercial bathroom cleaners are too harsh to use on marble and they can etch or otherwise damage the surface.
Etching is corrosion that eats away at the marble which will cause dull and light colored or clear spots.