This is a nice explanation on this blog post. Very clear for the 3 Stone Amigos of Tuscany :)

This is great!

What would you suggest to use to clean honed bianco mosiac marble floors? We are thinking about using it. I realize I can't go to my standby cleaner of clorox clean up with bleach for marble.

Tiffany,

The product is sealed after installation. You need to read the sealers instructions for how to clean, what you do not want to do is use a cleaner and accidentally remove the sealer.

Then look confused as your tiles turn the same color as your shampoo over the years.

Sealing is the most common missed step. It cannot be seen, many unqualified natural stone installers skip it, as they are trained in Ceramics and just want to be installing natural stone for the extra money. But they are paid that extra money to go on courses and learn how to correctly install the product.

What I recommend is saying this to your installer "When it comes to sealing the product can you please go over it with me carefully and I can watch and learn how it is done. As in so many years (depending on the sealer), I will be the person who has to re-do it".

You may hire someone to re-do it. But that is not the point. The point is to not offend anyone, but to micro-manage the final step, ensuring it really is sealed.

Thank you

The Builder Depot.

Hi sofiateren

Statuary marble is not a product we sell at this time.

But I do know it is white and has a white base and the whiter the material the more that a stain would show unless sealed, and sealed well.

Unfortunately there are a number of reasons. The marble would have been on the mountain for millions of years, subjected to water/rain. In that time it has not or did not turn yellow.

What it has not been subjected to is the number of complex soaps, cleaners and shampoos that humans use. It is likely that something used in the shower or something used to clean the shower has caused damage. Interacting with the minerals in the stone.

Or (more nefariously) unfortunately you could have been told it was "Statuary" when it was in fact from Turkey. Turkish marble is readily available, they do not have to climb mountains to get at it. It ease of extraction makes it a very low cost to importer and it is low cost.

This low price makes some less than honest companies to sell it as "Statuary". As they can then charge the higher price of an Italian Marble. (I like to look at the retail competitors and slab yards now and again and I see mislabelled marble all the time and only someone who has travelled the world and been in the industry for decades could tell the difference).

You need a professional to review it. Make sure the Statuary is indeed statuary, make sure the yellow is not rust spots, another mineral reaction.

I would not do anything different at this point until a professional who is qualified from the Marble Institute of America and has significant experience in marble restoration has seen it.

I have seen chemicals added to yellow spots and have seen it clear up. But the areas would be out of use for a while. Then once back to normal, seal it.

I hope that helps.

Thank you
The Builder Depot.