Don t use soap as it is fat based and can cause the stone to darken.
Carrara marble water stains.
Marble is not very absorbent so it does not stain easily.
In situations where the carrara marble is constantly exposed to water the water can absorb and oxidize the iron so it rusts.
Iron deposits that are embedded in white marble tile especially carrara marble are typically the cause of this type of stain.
A marble stain is when a substance is absorbed into the pores of the marble.
It started out faint has gotten brighter and appears to be growing.
When water is cyclically applied to carrara marble the water will penetrate the marble surface time and time again.
This is because the pores are closed down in the polishing process.
Over time the water will begin to rust the metallic deposits inside the stone and create a yellowish stain inside the stone.
Clean the marble with warm water and detergent.
A yellow brownish stain has begun to appear on the marble bench slab.
How do you make a marble poultice.
Combine the required solvent with water or baking soda.
Depending on what the specific stain is the solvent can be 6 percent hydrogen.
Rub the paste into the stain with a soft cloth.
The process of making a marble poultice is very important considering that most of the stains can be removed.
As the water evaporates it moves to the surface carrying the rust with it creating a rust stain.
If these deposits are exposed to water they can rust and leach through to the surface causing the yellow brown stains.
Cover the area with plastic wrap for 24 hours.
Vinegar ammonia hydrogen peroxide lemon orange or other citrus cleaners cleaners that are acidic.
Remove more difficult stains and water spots with a thick paste of baking soda and water.
So closed in fact that marble often cannot absorb even a sealer stay tuned for my marble sealing post.