Thinner grout spacing for subway tile creates a more subtle effect and wider grout lines a more dramatic one.
Marble subway tile grout line.
I try to use the smallest grout lines the tile will allow.
This thickness leaves room for the natural variation in.
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.
If you are going for high contrast or retro style wider grout spacing gives you the opportunity to make a statement with your grout.
In most other tile i will use 1 16 or 1 8 inch lines.
Most floor tiles are 8 inches by 8 inches but larger versions are available.
Grout including sealed grout tends to wear more quickly than tile and become more porous and prone to staining.
Because of this minimizing the width of grout lines is advisable.
How to grout marble tile.
As a general rule floor tiles should have grout lines of 1 8 inch or larger depending on the type and size of tile.
Finished grout lines will vary from 1 16 to 3 16.
Although tile installations can be installed in groutless format the traditional method calls for grout to be placed in the joints between the tiles.
This is true of man.
Note that using the smallest grout possible will increase installation time.
For most granite and marble tile i install i use either 1 32 or 1 16 inch grout lines.
If smaller spacers like 1 8 are used it will accentuate the size difference of handmade tile.