It is for this reason that we recommend not using white marble in a shower.
Marble tile turning orange.
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.
In my case i believe it to be iron in the water since we have tried cleaning this tile to no avail for quite some time.
Well they can either be mold or iron in the water that is discoloring your grout.
Usually it this process occurs over a longer period but if enough moisture it could happen quickly and these tiles are thin.
First of all what are those orange stains in your grout anyways.
Depending on what it is there are a few different approaches but i found my simple approach is the easiest and yielded good results.
It is for this reason that we recommend not using white marble in a shower.
Try to clean it pull it out with a poultice will make it worse.
It is rust stains that naturally occurs when the iron deposits reacts with water or repeated long term exposure to moisture.
Not much you can do about it.
The second cause is excess iron in the water.
Kbaby what is that to the left of the orange mark in the picture.
Marcescens is commonly found growing in bathrooms especially on tile grout shower corners toilet water line and basin where it manifests as a pink pink orange or orange discoloration and slimy film feeding off phosphorus containing materials or fatty substances such as soap and shampoo residue.
Iron can stain the bathtub and other light colored fixtures that the water touches.
You can recommend that your friend pulls the 3 4 tiles out and replace them.
The aforementioned conditions plus the stone being subjected to excessive moisture can cause rust staining or also know as inorganic metal stains.
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.
The first cause is mold which develops from the combination of moisture and warmth in the bathroom.
If the marble becomes wet long enough to allow moisture to leach through the marble the iron deposits will oxidize creating yellow orange brown stains.
How to clean orange stains in shower.
Due to its abundant presence in the environment and its preference for damp conditions s.