They look beautiful like they did when they were first installed 17 years also. The Taj Mahal is turning yellow mainly due to these reasons: air pollution, discoloration of marble due to oxidation of its constituents, environmental neglect and wear and tear caused by millions of tourists who visit it every year.. The turning yellow phenomenon of the stone related to the installation is mainly caused by two aspects. Therefore, effective prevention of yellowing of white marble should be a comprehensive measure. If any amount of iron is detected then it is possible iron has entered the stone through the water supply. This oxidation process is accelerated when the tile is saturated as in the flood in the above example. a) the structure and composition of the stone itself. To find out if your marble contains iron, you can have your stone tested by a lab. The yellowing of white marble is a common problem. 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 after several cleanings the yellowing is not removed then consider the next cause. White marble tiles can remain for years without yellowing then over time may slowly turn yellow, and in severe causes, may turn completely brown. It’s also a good idea to test the marble for moisture if it has been soaked with water. Why is My White Marble Turning Yellow? White marble turns yellow due to oxidation, a process caused by natural iron found in white marble and moisture. If iron is present naturally in this stone, it will probably be detected in the spare tiles. It is for this reason that we recommend not using white marble in a shower. The most common culprit for white marble turning yellow is iron, which can be found in many natural stones. We have a new bluestone floor that needed to be cleaned, buffed and sealed. But what happens if your beautiful white marble begins to turn yellow? Selecting a quality-assured waterproof adhesive to waterproof the back of the board is the most important step in all measures. In this case, also try to clean with the "Wax Stripper", however, the surface may need to be professionally re-finished to remove the discolored layer of the marble. Sitting in my office one morning I received a call from a very upset home builder. The following stain removal technique has proved successful in several cases. He also fixed the chips etc. oofing material is also guaranteed, and theoretically, water-related yellowing should not occur again. If these techniques fail to remove the yellowing then proceed to the next possible cause. When exposed to water, acids or bleach, the iron in the stone will begin to oxidize and turn it yellow. Although flooding is a common cause there are several other reasons this color change will occur. If your marble contains any moisture when this type of polishing occurs, the stone will begin to yellow. These water-soluble organic substances are often brownish yellow when reacted with alkaline water. If oxidation is indeed your issue, preparing and applying a poultice solution may rid the yellowing from the marble in some cases. We can check the tile for moisture using a moisture meter. NOTE: There are also some new chemicals that are available which contain Ammonium Thioglycolate which look promising for removing iron oxidation. 4) Turning yellow caused by crystal surface treatment. White marble is widely used in high-grade luxury building’s wall and coverings, but white marble is very fragile and difficult to manage, especially easy to turn yellow. This can sometimes be reversed with a powder marble polish and if not, the floor will need to be honed by your stone and tile care professional. Prepare a solution of water and the following chemical: Sodium Hydro sulfite and Sodium Metabisulfite. In extreme circumstances, the marble can turn a brown color, akin to what happens to a piece of iron left out in the rain. Firstly, the gloss of the polished surface of the wax is not long. It is strongly suggested that the polishing and honing procedure be performed by trained individuals. This can sometimes be reversed with a powder marble polish and if not, the floor will need to be honed by your stone and tile care professional. As the polished surface of the marble wears, the dirt is carried into the pores of the marble surface with walking, and the dirt causes the surface of the white marble to appear yellow. Be prepared to expect that the marble may need to be repolished since these chemicals can etch marble. Before testing this procedure it is important to first determine if iron is the cause. 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. These strippers often require the use of abrasive pads which can scratch and damage the marble surface. Copyright © Xiamen Yeyang Stone Group All rights reserved. If the stain is removed, the entire floor can be treated. The dirt brought by the dirty mop accumulates in the marble, causing the marble surface to become yellow and contaminated. If the marble floor or wall panel is not waterproofed on the back of the board during the wet installation, the alkaline water of the cement slurry penetrates the marble and reacts with the organic matter in the marble to produce a colored product. Our YouTube Ask Our PROS video channel features how-tos, and answers common questions. These iron minerals are susceptible to oxidation, and when the iron-containing minerals randomly dispersed in the marble are oxidized to form yellow or brown hydrated iron oxides, the surface defects are formed. Floors are mopped with strong cleaners or wax cleaner combinations or with no cleaners at all. International    Global Reach… Local Service Providers, Jeff Bailey, Chief Operating Officer, HDG Hotels, Removing Urine Stains and Odors on Natural Stone. Cure: To remove yellowing due to a wax or coating buildup the marble will need to stripped with a commercial wax stripper. Although flooding is a common cause there are several other reasons this color change will occur. 4.Shuitou Slab Factory:Xijin Development Zone, Shuitou Town, Nan'an City, Fujian Province. If these procedures fail then testing for iron will be necessary. We’ve got answers! Cure: If you suspect yellowing due to improper maintenance the marble tile will have to be cleaned with an alkaline marble cleaner. How to remove virtually any type of stain on hard porous surfaces such as natural stone. If after several cleanings the yellowing is not removed then consider the next cause. This is one of a series of articles written and published  on behalf of Stone and Tile PRO Partners. If the above procedure fails we can then prepare a poultice with diatomaceous earth and the Iron Out™. Prepare a solution of water and the following chemical: Sodium Hydro sulfite and Sodium Metabisulfite. The most common incorrect care is to wet the floor with a dirty mop. This oxidation process is accelerated when the tile is saturated as in the flood in the above example. This oxidation process is accelerated when the tile is saturated as in the flood in the above example. The yellowing of white marble is a common problem. Great resource! Give us a call. After several weeks the replacement of warped wood and drywall was completed, but he noticed the white marble had turned yellow in many areas. I sent some pictures per his request that night and Eddie was at my house 8:00 the next morning to look at the job. White marble tiles can remain for years without yellowing then over time may slowly turn yellow, and in severe causes, may turn completely brown. Use a good quality osmotic water repellent to regularly protect the floor and reduce the time and opportunity for water to contact the stone. This layer can often be removed by a professional polishing the tile with a powder marble polish containing oxalic acid.

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