I don t really see how it will get any better.
White marble grey thinset.
Gray thinset eliminates this risk.
Slate tile is typically less porous than travertine and has a dark colored body.
Use a non sanded grout to protect both the marble and the grout from discoloring too much.
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.
The light gray is also a fine choice but keep in mind that it will darken and maybe not match the tile color quite as well over time.
White is usually used for walls and counters and gray for floors.
In conclusion ensure if you re going to install white marble or light stone use a white colored thinset and portland cement or waterproof system.
Versabond cures quickly and adheres to most surfaces.
I have never seen white marble turn that grey from water before though.
The custom building products versabond 50 lbs.
If you want light grout use white thinset.
Josh that is how long it takes the thinset to fully cure.
What kind of marble is this.
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 thinset may prove to be difficult to clean off the surface and small cracks on the finished surface area of slate.
For this reason gray thinset is recommended.
I am about to tile my final room.
Do not use any grey mud or thinset that can penetrate through to the light stone.
Fortified thin set mortar is a professional formula all purpose mortar polymer modified to provide good bond strengths.
Near the end i could not find any white thinset anywhere of the same brand that i was using so i bought the dark gray one and finished the last 10 15 tiles using the dark one.
Also after installation continue to seal your stone at least one time a year to prevent future staining.
White grout is a risk in bathrooms though as everyone mentions.
In my other room i used white thinset fortified thinset flexbond as my tiles are a light colour tile.
Now the marble looks gray yellow and dingy.
Suitable substrates include interior and exterior floors countertops and walls.
You can also choose the color based on location.