Most of these cracks can be sealed with caulk.
Gap between wall and floor tiles bathroom.
In addition leave a 1 16 to 1 8 expansion joint between the main wall tile and shower floor tile or adjacent wall tile.
The gap goes 3 5cm to 4cm back to the breeze block.
The tile council of north america recommends at least a quarter inch gap between the tile floor and the walls.
As the tiles increase in size a larger gap becomes acceptable.
These gaps exist between tiles that are on the floor as well as between tiles where the floor and the wall touch.
This expansion joint allows for natural shifting and movement which can occur in your home over time.
Never fill this gap with grout because tile grout is not flexible.
The sole purpose of grout is to fill the spaces between tiles after the tiles have been glued in place on a floor or on a wall.
The large format 18 inch tiles should have inch space in between.
Hopefully these tips help you with your project.
Current trends are moving towards leaving much smaller grout lines between tiles.
Doing so will prevent moisture from accumulating which can also protect against the growth of mold and mildew.
Grout fills the joints between tiles.
There is a gap of say 5mm to 8mm give or take high between where the floor tiles meet the wall tiles in the bathroom.
Many bathrooms are built with an intentional gap between the wall tiles and the bathtub.
Caulking is the best choice for this application.
The overall finish of your job really does depend on your own personal style.
Caulk between the wall and tile.
This joint should then be filled with 100 silicone to allow for expansion and contraction as well as providing a waterproof layer.
Instead fill it with an elastic material capable of sustaining the movement of the floor and the movement of the wall.
For smaller tiles is advisable to use small spacers.
I m guessing its the thickness of the dot and dab then plaster board then tile adhesive then tile.