If iron is present in the marble tile it will begin to oxidize when exposed to water or other oxidizers such as acids and household bleach.
Bleach on white marble.
Wear old clothing and rubber gloves when working with bleach.
We see mold the most in grout or in corners of marble showers.
Bleaching stains removes most discoloration from unsealed marble.
A lot of times the mold is still there and is a living organism.
Etching is corrosion that eats away at the marble which will cause dull and light colored or clear spots.
Purchase marble polish and apply it according to the manufacturer s instructions.
On light colored marble you can dilute one quart of bleach with one gallon of hot water or for a small area a size appropriate 4 1 mixture to remove the stain.
The use of bleach is the another great method of removing mold stains from marble.
Your tiles may end up etched pitted or discolored.
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 best marble whitening method is to use a combination of a mild cleaning agent mixed with an absorbent material known as whiting finely ground white chalk which can be found in most paint or home improvement stores.
Only use bleach on light colored marble and do not use the poultice method on sealed marble surfaces.
I escalated from diluted simple green to undiluted simple green to a vinegar water solution to a diluted bleach situation to pure uncut bleach on a toothbrush.
I don t recommend this unless like.
So it s best just not to use it.
Some professionals also recommend applying a clear protective marble wax but refrain from doing so with white.
In general we recommend against using any of our tilex bathroom cleaners both with and without bleach on marble so i wouldn t advise bleach usage here.
Calcium carbonate the primary compound in marble can be highly reactive to both acidic and alkaline cleaners.
Bleach is alkaline so it doesn t pose the big risk of acidic cleaners which dissolve sensitive stone including marble.
The bleach works great because it kills the mold and also helps to remove the mold stain that is left behind once the mold is gone.
The damage from bleach stems from an entirely different characteristic.
Work in a well ventilated area.
I started to scrub.
The yellow stain didn t fade a bit.