For smaller tiles is advisable to use small spacers.
Gap between wall and floor tiles.
The d i y video how to seal a big gap between tile floor and tile wall in a bathroom or shower.
It shows how to seal a gap in the corner where the tile floor.
Current trends are moving towards leaving much smaller grout lines between tiles.
How to space between ceramic tiles.
Never fill this gap with grout because tile grout is not flexible.
Caulking is the best choice for this application.
Ceramic tiles are available in a variety of sizes.
Instead fill it with an elastic material capable of sustaining the movement of the floor and the movement of the wall.
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The overall finish of your job really does depend on your own personal style.
The tile council of north america recommends at least a quarter inch gap between the tile floor and the walls.
The large format 18 inch tiles should have inch space in between.
Not filling the gap can allow water to migrate undeneath the tiles.