If you have selected a tile line that includes a finished edge version then you have no problem.
How do you finish shower door edges of mable tile.
Another simple option is to use caulk to finish the edges of your tiles.
If you cant find a suitable corner round you could finish the edge of the tile at the front of the curb or finish the front edge corner if you choose to tile the front side of the curb which i recommend with grout.
The key is to recognize the need and make that a requirement in selecting the tiles.
I do not recommend finishing any tile edge with caulking.
Fill this gap between the tile and the masking tape with a smooth.
Or glaze the raw edges of your end tiles in a different color to add contrast.
I bought budget friendly tools from amazon.
The schullter system for wet areas includes a range of metal finishing edges.
In this video i show i polished the edges of my carrara marble tiles for the shower niche in my master bathroom.
It include design considerations measur.
We ve done this for many years but it s possible your contractor doesn t have the experience with this type of an installation.
To give the edge a clean water tight finish place a piece of masking tape one grout joint away from the edge of the last tile.
You can also miter the edges of any edge tiles with a tile saw to create a slanted effect.