Photos of existing please

I know I’m going to have to move that air vent but I’m already re doing the floor

I appreciate your insight but I’ve done multiple showers and tiling work before. I also have all of the tools. I’m just unsure of how to do it without removing all of the tile.

I was thinking to remove the tile in a line early and then remove the cross grout. So I get an easier line going up for removing

Then putting a different tile to separate the shower from the wall.

You want to expand your shower, but not take down the shower walls and put up waterproofing. You just want to remove the shower tile and as much existing wall tile to make the shower bigger. You want to know how to handle the transition between the new shower tiles where they butt up to the already existing wall tiles. Johnson Brothers, some professionals, have told you to gut the shower and start over. You replied that you own the tile laying tools and are experienced in laying tile.

Johnson Brothers told you that you will need to know a number of other skills, as well. The tile is just the finishing layer on top of an already waterproof shower that drains properly because it was built correctly. Were you planning to waterproof the walls under the tile? What system do you use? Do you know how to achieve a properly sloped floor? Do you think that you can simply add length to two sides of the shower floor, or are you planning to rip out the shower floor and start over? How are you going to remove wall tiles without violating your waterproof barrier underneath? How are you going to tie in the new wall space waterproofing to the existing waterproofing? Do you use waterproofing when you build a shower?

Yes I know how to install waterproofing. I honestly don’t know what is behind the wall. It is currently a full pan shower up along the walls so I’m guessing that there is no waterproofing. So I do understand that all of that needs to be ripped back to the studs and likely replaced with waterproof paneling and red guard.

I was planning on using a schluter pan for the floor.

I also know how to do the plumbing work.

As I stated in my original post I’m tearing the floor out so the shower pan that exists currently would also be going.

What I haven’t done before is cut tiles along a wall out without damaging the adjacent tiles. I have some ideas how to do it and intended to start in the row before the last row to be taken out. I also have some of the old tiles that are on the wall currently in case something breaks

I’m not sure what other information you are asking me to provide, but I would think that I can install the barriers adjacent to the existing tile with the same size concrete board as the sheet rock seal it and clean the grout along those lines and then tile. I’m just not sure if that is the correct way to join the tiles and/or the correct way to cleanly remove an entire row of tiles.

I don’t know how to do the entirety of this particular job, but I have ripped back to the studs installed barriers and tiled showers before, previously the remainder of the bathroom was painted and not tiled so this job is a little bit different