White Marble Turning Grey

I just had some beautiful white calacatta marble mosaic installed in my bathroom and picked a light gray grout.

White marble turning grey.

We installed sealed white marble in our walk in shower on the floor and walls. We have just had our bathroom tiled with 300x600 white ceramic glazed tiles. The contractor swears that there is no way that the grout stained the stone and that the grout is just making the stone look darker. He used grey adhevise and white grout.

02 25 2018 06 54 pm. If it was where the water was hitting it i would think the floor and more of the wall tiles. This oxidation process is accelerated when the tile is saturated as in the flood in the above example. White tiles turning grey.

Marble turning grey when installed. White marble tiles turning gray in shower. We don t know what is causing this. White marble tiles can remain for years without yellowing then over time may slowly turn yellow and in severe causes may turn completely brown.

Now the marble looks gray yellow and dingy. This process of oxidation is similar to the rusting of metal. I m gonna guess he doesn t want to spend the money to buy a new bag of white and had some open bags of grey in the back of the truck but my crystal ball has been wrong before. I have never seen white marble turn that grey from water before though.

By barb dexter mi question. This oxidation process is accelerated when the tile is saturated as in the flood in the above example. The tile shop claims that tiles are not faulty and that they will turn back to white within. The bottom 1 1 2 rows of tiles on 2 walls are turning gray.

Our white marble floor is turning dark grey what causes this as no one wants to take responsibility input appreciated white thin set was used last edited by sharon anderson. If it does turn white again and you seal it you are still going to have water penetrate the marble along all the edges through the grout. 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 tiler has never seen anything like this before.

This process of oxidation is similar to the rusting of metal. 2 days later they have all turned a varying shade of grey. I don t really see how it will get any better.