If it is actually a cement haze then if you take some diluted vinegar in a out of the way spot and apply it to the haze it should remove it.
Cleaning grout haze on marble.
Bath shower soap scum hard water remover recommended in the article comments above see links above.
Because it is a polished marble made of calcium carbonate it makes it acid sensitive.
How to take haze off of marble tile 1.
Fill a bucket halfway with warm water using about a gallon of water.
Grout haze and residue is typically removed with an acid solution after the tile is.
You can start cleaning it right after the grout lines dry.
How to get rid of grout haze on your stone tiles avoid grout removal products.
If you use a latex modified or polymer modified cement grout then the haze can be a latex haze which an acid will not remove.
Apply the grout remover.
Most grout haze removers are acidic and will etch the marble dulling the surface and ruining the finish.
This will remove the grout haze and you ll want to use this product as your regular marble safe shower cleaner as well.
Avoid getting the baking soda on the marble or brushing.
While sealing the grout a lot of sealer has marked the tiles.
Brush away loose grout.
As soon as possible after installation brush away loose grout from the surface of the stone.
Of course rinse the spot with clean water right away and wipe dry.
Stir in four spoonfuls of liquid dish detergent or about four squirts from the bottle.
Wring thoroughly as too much water can damage.
Fill a sponge with water wring most of it.
Move to chemical grout remover if the sponge and water don t work.
Try a sugar.
Make sure the water is warm as this will.
The key is to use a mild.
Add one cup of.
How to clean marble grout step 1.
Dampen the grout haze with pure water first to see if that removes it.
Read the directions carefully as different.
Scrub the grout between the marble tiles with the toothbrush.
There are special cleaners for removing latex haze so go to cleaners and sealers to get links to manufacturers of these products or contact the grout manufacturer who might offer a latex haze remover.
So double duty from the same product.
Remove grout haze with water and cheesecloth.
If you do get grout haze then use the scp.