There are four basic types of grout for ceramic tile.
Sanded or unsanded grout for kitchen backsplash.
Sanded or unsanded when filling the gaps between your kitchen backsplash tiles you will need to use either sanded or unsanded grout.
When grout dries it can shrink down which is why sanded grout tends to be the preferred option for flooring.
You do see the sand in it where unsanded is very smooth.
Since wall tileinstallations with narrow grout lines are less prone to cracking the extra durability of sanded grout won t matter.
Unsanded or non sanded tile grout.
Unsanded grout is recommended for grout lines that are.
If the joints between the tile are.
Non sanded grout used in lines 1 8 or more will slump crack and otherwise not provide proper fill.
Sanded grout is used on larger gaps because the sand acts as an aggregate holding the large gap together.
Unsanded fine sanded quarry type and epoxy.
For grout lines 1 8 to 1 16.
I would use unsanded.
Inch or smaller which is typical of most backsplash tile installations.
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.
It is not as clean looking as unsanded though.
Finely sanded grout for ceramic tile.
Unsanded grout is most often used on vertical surfaces such as a kitchen backsplash.
This is used for floor tiles where the joints are 1 8 to 3 8 wide.