Finished grout lines will vary from 1 16 to 3 16.
Marble subway tile grout line.
Although tile installations can be installed in groutless format the traditional method calls for grout to be placed in the joints between the tiles.
Note that using the smallest grout possible will increase installation time.
I try to use the smallest grout lines the tile will allow.
Because of this minimizing the width of grout lines is advisable.
This thickness leaves room for the natural variation in.
For most granite and marble tile i install i use either 1 32 or 1 16 inch grout lines.
Grout lines for floor tiles.
In most other tile i will use 1 16 or 1 8 inch lines.
The best thing to do is use the smallest grout line your particular tile will allow and get a grout that closely matches the tile.
This is true of man.
As a general rule floor tiles should have grout lines of 1 8 inch or larger depending on the type and size of tile.
Special types such as slate or quarry tiles often do not have edges uniform enough to look good with tight spacing.
Thinner grout spacing for subway tile creates a more subtle effect and wider grout lines a more dramatic one.
How to grout marble tile.
Most floor tiles are 8 inches by 8 inches but larger versions are available.
We recommend a 3 16 grout size for our ceramic tile line.