He told me he was building a two million-dollar home and had installed nearly 3500 square feet of a white statuary marble tile. They managed to vacuum all the water and started to assess the damages. After several weeks the replacement of warped wood and drywall was completed, but he noticed the white marble had turned yellow in many areas. Meanwhile, the homeowner was getting more and more irate and was threatening a lawsuit.

Although flooding is a common cause there are several other reasons this color change will occur. The wearing of this polish causes the surface to become rough and become a magnet for dirt. Mops used to clean the restrooms and/or kitchens were also used to clean the marble floors. Be sure the stone cleaner you buy needs to be alkaline and not an acid since acid cleaners will dull the polish. These coatings require frequent stripping which is often neglected. If this process is applied to a white marble floor that contains moisture it will turn the marble yellow.

If you do try it yourself, before undertaking the entire project perform a small test to determine results. This layer can often be removed by a professional polishing the tile with a powder marble polish containing oxalic acid. It is strongly suggested that the polishing and honing procedure be performed by trained individuals. 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. White marble tiles can remain for years without yellowing then over time may slowly turn yellow, and in severe causes, may turn completely brown. If a flood has occurred or excessive water was used first check the water for iron. To eliminate the iron there are chelating chemicals that can be added to the water to prevent the iron from staining. If there are spare tiles that have never been installed it would be a good idea to also have them tested for total iron. If the tile contains water, it is very possible that iron is beginning to oxidize. Be prepared to expect that the marble may need to be repolished since these chemicals can etch marble.

After 24 hours remove the poultice paste and rinse the area with water and a chelating agent.

Over the weekend one of the water pipes broke in a bathroom and completely flooded the home. Beside warped wood, soaked drywall and an irate homeowner, the marble tile seemed fine except for some minor water spotting. At first he thought it might be some type of residue so they tried cleaning the marble with some bleach and water but the yellowing was still there.

If improper cleaners are used, this dirt begins to accumulate in the pores of the stone can will turn yellow. Floors are mopped with strong cleaners or wax cleaner combinations or with no cleaners at all. It may be necessary to repeat this procedure several times to remove all the imbedded dirt. Some of these coatings are of poor quality and the coatings themselves will begin to yellow. As the coating builds up it becomes soft and dirt is easily embedded in the soft layer. Another possibility along these same lines is that process sometimes used for polishing marble floors is known as re-crystallazation. These strippers often require the use of abrasive pads which can scratch and damage the marble surface.

If the marble tile has been recrystallized, it will be necessary to remove the recrystallized layer. If these techniques fail to remove the yellowing then proceed to the next possible cause. It is for this reason that we recommend not using white marble in a shower.

This oxidation process is accelerated when the tile is saturated as in the flood in the above example. If you expose a brand new nail to water and air it will turn brown and rust. The process is difficult to reverse and replacement of the tile may be necessary. Before testing this procedure it is important to first determine if iron is the cause. If any amount of iron is detected then it is possible iron has entered the stone through the water supply. If iron is present naturally in this stone, it will probably be detected in the spare tiles. We will mix a solution in water and apply to the effected tile, and allow the solution to soak into tile and kept wet for several hours.

How Can I Get The Hard Water Stains Off My Marble Shower? by justanswer.com

We’ve tried everything and have had a professional come out to try to remove it – with no success. However the vanity which is more of a red/orange colour tarting to get lighter about a month ago.

Use a very fine steel wool and buff stains lightly (marble should be dry) — then using a bit of marble paste on a clean cloth, rub the site of the stain. Because marble is so delicate you may not be able to get all of the stains out of the surface completely, but this method should help to blend/hide them. I have a small marble table top that has paint stains and rust on it, it is shiny and slick.

Marble Shower Entry by nachi.org

This could have been from a potted plant sitting on the sill or hair products with colors added draining to that specific area. Now, the marble would have to get somewhat saturated for this to happen.

Try to keep the posts topical, but they need not be as specific as the other areas of this board.

I inspected the marble, and it has copper colored stains either from the back out or the top down, all the way through the marble. It will a stone specialist to determine cause and if it can be repaired or will need to be replaced. If these deposits are exposed to water, they can rust and leach through to the surface causing the yellow/brown stains. If water remains on the surface for hours it could absorb enough to rust the iron and then as the rusty water evaporates it is brought back to the surface. I would do a man-made quarts overlay to repair the cosmetic issue vs pulling the door off and replacing it.

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