On the contrary if you have to install cut tiles you should spread the thinset to the back of the tiles and install it with the cut edge pointing towards the inside corner.
How to grout tile wall corners.
Use a hard edged rubber grout float and hold it at a 45 degree angle.
Spread the material in sweeping arcs pressing it into the joints to fill them completely.
Work in a small area at a time roughly a 3 x 3 foot section.
That ll keep you from messing up a finished floor.
My tile installer recently told me that he wanted to use caulk in the corners of a tiled shower instead of grout is that necessary.
Tom meehan a second generation tile installer and co author of working with tile who lives and works in harwich mass responds.
Use whichever side or corner of the float is necessary to fully compress grout into the entire.
Simply put because of movement.
Don t grout the corner line.
Placing caulk over grout in the corners will just lead to cracked grout in the corners that can not fall out but it ll still be cracked.
Press the grout into the lines between the tiles while scraping it off the surface then wipe up the excess with a damp sponge.
According to the tile council of north america anywhere a tile surface changes plane like an interior corner or meets an abutting surface against a wall or hardwood floor for example should be considered a movement joint.
Pour a quart to half gallon of grout on the tiles.
Why does grout crack in the corners of showers backsplashes and against abutting surfaces.
Apply the grout diagonally across the tile joints to squish the grout into the joints photo 5.
If you have to install full tiles along the internal corners we recommend you to spread tile adhesive directly to the wall by using a large notched trowel.
The vast majority of showers that i ve tiled have had no problems when i use grout in the corners.
Grout both walls spreading the grout over the tiles with a grout float.