Bullnose tiles have finished edges and are meant to be installed with wall tile.
How to tile a outside corner no tile other wall.
Lay out the tiles along the first wall that comes up to the corner.
Spread the mortar on the tiles that will be placed on the outside corner and gently press them in place so they overlap the first set of tiles and their edge is flush with the surface of the previously installed tiles.
Cut the final piece of tile on a wet saw to fit the wall so that its edge is flush with the corner.
Install the wall tiles in such a way as to have a clearance space 1 8 1 10 between the corner and the tiles to leave them enough room to expand.
Apply mortar to the back of the tile with the notched trowel.
Then tile the other wall overlapping these tiles to conceal the edges of those on the first wall.
For a seamless look use bullnose tiles of the same color as the other tiles.
Press the tile against the wall with the cut side facing the corner and the other edge next to the last full tile in the course.
The outside corner is part of bathroom shower corner that need to be tiled.
They typically have a gently rounded edge and are used to create a transition between the tile and the wall.
As you can see in the image you should place spacers along the inside corner and between the tiles.
You can use the trim.
After you have finished installing tiles on one side of the internal corner you should continue by laying tiles on the other side.
Install the tiles on the more visible wall.
Allow all the tiles to dry for 48 hours.
If you have natural stone or porcelain tiles consider grinding the edges into bullnoses to save you buying trims.
Tile the less visible wall first placing whole tiles flush with the corner.
Space the two tiles consistent with the rest of the tiles generally 1 8 inch which will leave a 1 4 inch space at the corner.
Coloured plastic or chrome corner trims will protect tiles on external corners from damage and give the edge a neat finish.
You can also miter the edges of any edge tiles with a tile saw to create a slanted effect.
This do it yourself video shows how to tile outside corner without bullnose.
Therefore you should spread tile adhesive on the wall with a notched trowel and install the tiles.