Instead fill it with an elastic material capable of sustaining the movement of the floor and the movement of the wall.
Gap between shower floor and wall tile.
So to accommodate the flooring tile many like to leave a small gap between the last row of wall tile and floor.
If your gap is smaller than 1 8 inch in width use regular caulk.
Grout is generally the best choice for filling joints between tiles in showers or elsewhere.
These can be left in place and will not be seen when you have completed your tiling.
Place the 1 16 horseshoe shim on tub and measure up to the laser level.
As the tiles increase in size a larger gap becomes acceptable.
For smaller tiles is advisable to use small spacers.
Fill in the gaps between the tiles using a rubber grout float.
Once the tile mortar sets the installer can remove the spacers but cannot change the spacing.
Tile spacers range in size from 1 16 inch to 1 2 inch.
When installing wall and floor tiles technicians place plastic spacers between each one to ensure the lines remain uniform.
Place them between the tiles are you lay each one and grout straight over the top.
In addition leave a 1 16 to 1 8 expansion joint between the main wall tile and shower floor tile or adjacent wall tile.
Never fill this gap with grout because tile grout is not flexible.
And after installing the floor tile you can install that final or first row of wall tile.
But with bathroom tile installations every detail is key.
Grout the gaps between the wall tiles take out the spacers and prepare the sanded grout mixture.
Fill gaps larger than 1 8 inch.
The tile council of north america recommends at least a quarter inch gap between the tile floor and the walls.
This joint should then be filled with 100 silicone to allow for expansion and contraction as well as providing a waterproof layer.
The large format 18 inch tiles should have inch space in between.
But where two tiled shower walls meet or where a shower wall meets the floor called change of.
Leaving a 1 16 gap between the tub and tile will prevent the tile from cracking when the tub expands.
Plus a 1 16 gap allows the caulk to properly fill the space and waterproof the transition between the tile and tub or shower.
Caulking is the best choice for this application.
Or fill the gap with grout.
If you have tile on the wall adjoining the tub select a caulk that matches the color of the grout.