Fill gaps larger than 1 8 inch.
Gap between shower floor and wall tile.
In addition leave a 1 16 to 1 8 expansion joint between the main wall tile and shower floor tile or adjacent wall tile.
Place the 1 16 horseshoe shim on tub and measure up to the laser level.
Once the tile mortar sets the installer can remove the spacers but cannot change the spacing.
This joint should then be filled with 100 silicone to allow for expansion and contraction as well as providing a waterproof layer.
Plus a 1 16 gap allows the caulk to properly fill the space and waterproof the transition between the tile and tub or shower.
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.
Hopefully these tips help you with your project.
Grout the gaps between the wall tiles take out the spacers and prepare the sanded grout mixture.
When installing wall and floor tiles technicians place plastic spacers between each one to ensure the lines remain uniform.
If you have tile on the wall adjoining the tub select a caulk that matches the color of the grout.
For smaller tiles is advisable to use small spacers.
Leaving a 1 16 gap between the tub and tile will prevent the tile from cracking when the tub expands.
Never fill this gap with grout because tile grout is not flexible.
Caulking is the best choice for this application.
Place them between the tiles are you lay each one and grout straight over the top.
Instead fill it with an elastic material capable of sustaining the movement of the floor and the movement of the wall.
As the tiles increase in size a larger gap becomes acceptable.
Or fill the gap with grout.
Grout is generally the best choice for filling joints between tiles in showers or elsewhere.
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.
Some like to use a ledger or other space saver to indicate where your missing row should be.
But where two tiled shower walls meet or where a shower wall meets the floor called change of.
Fill in the gaps between the tiles using a rubber grout float.
And after installing the floor tile you can install that final or first row of wall tile.
Soak a sponge in water and wet the tile with it.