The polished bianca carera marble hex tiles on the floor are now covered in fine scratches and grout is set.
Will sanded grout scratch marble tile.
You should never use sanded grout with glass metal or marble tiles since it can scratch the surface and cause damage.
Sanded grout is normally recommended when the grout seams are 1 8 inch wide or more as the sand provides extra bonding power that prevents cracking.
You will never be able to polish that floor if has sanded grout in it.
Unsanded grout is usually recommended for tile that is easily scratched such as natural stone glass and certain porcelains and ceramics.
Grout polished marble with tight joints up to 1 8 inch with nonsanded grout since sanded grout will scratch the surface of the marble.
If the joints between the tile are.
Rule of thumb is dont use sanded grout on marble it can interfere with any refinishing and repairs.
In practice some veteran tilers relate that the abrasion from sanded tile grout is likely not enough to scratch tile surfaces.
Epoxy grout works great to resist stains but it may be a bit difficult to apply.
Some care is required if using sanded grouts on highly polished tiles as the sand can actually scratch the surfaces.
In theory the sand content in sanded tile grout may damage these surfaces.
Testing the grout on sample tile is a good idea.
1 8 wide grout joints can use either one but sanded grout tends to be more stable and doesn t shrink as much.
If it s scratched your more than likely stuck.
Black marble is typically very soft.
Push the grout into the grout joints with the tip of.
When using a floor machine to clean or polish it can pull small bits of sand from the joints.
Also the nonsanded is in platinum and the sanded the tile guy used also says platinum on the bag but looks white.
If thats what it is chances are youre going to have a problem.
I called the tile store and they said sanded grout would indeed do that to the polished marble.
1 4 grout lines in marble omg.
Acrylic latex grout is a good alternative but it will require sealing.
If it s smaller than 1 8 of an inch use unsanded grout.
Always use unsanded grout when working with a soft smooth polished tile like limestone or marble since abrasive sanded grout will likely scratch its surface.
The sand in grout can scratch soft marble tiles.