Marble Is Turning Brown

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Marble is turning brown.

While grout is designed to prevent moisture seepage it is still very porous and therefore stains easily says fraser patterson founder and ceo of bolster a brick underground sponsor also white carrara marble sometimes contains deposits of iron which. It s annoying to see your beautiful renovation starting to look less beautiful and it s not entirely uncommon according to our experts. This oxidation process is accelerated when the tile is saturated as in the flood in the above example. In extreme circumstances the marble can turn a brown color akin to what happens to a piece of iron left out in the rain.

This oxidation process is accelerated when the tile is saturated as in the flood in the above example. A yellow brownish stain has begun to appear on the marble bench slab. This process of oxidation is similar to the rusting of metal. When exposed to water acids or bleach the iron in the stone will begin to oxidize and turn it yellow.

This oxidation process is accelerated when the tile is saturated as in the flood in the above example. White marble tiles can remain for years without yellowing then over time may slowly turn yellow and in severe causes may turn completely brown. This process of oxidation is similar to the rusting of metal. Iron deposits that are embedded in white marble tile especially carrara marble are typically the cause of this type of stain.

It started out faint has gotten brighter and appears to be growing. If these deposits are exposed to water they can rust and leach through to the surface causing the yellow brown stains. White marble tiles can remain for years without yellowing then over time may slowly turn yellow and in severe causes may turn completely brown. The most common culprit for white marble turning yellow is iron which can be found in many natural stones.