You need a better tile guy. He most definitely can do a 1/3 offset - that's what ours is. He needs to learn how to use the tile leveling wedges. I don't have a great picture of our bathroom floor in progress, but I think I can find one of another room we had done.

Look on the package your tiling came in or online for installation instructions about your tile. Usually tile of that size has a manufacturer installation requirement of 1/3 off set. Because of inevitable warping of the tile in the kiln firing process, staggering the tile avoids lippage. All of my tile boxes said this and all of my tile guys have confirmed that is the way to install large rectangular tiles.

Unless I'm missing a key part of the situation, I would be concerned that the installer isn't well informed and I'd question their skill and knowledge. Google "33% offset tile" and you can learn a lot about the industry standards for this kind of tile installation.

Lay out some tiles on a level floor in a brick pattern and figure out if they are bowed.

That is a known issue with the 6x36 porcelain tile I bought, so the manufacturer tells you not to lay it 50% staggered. 33% staggered on my tile is OK. I think the raised area is in the middle, so I don’t understand the comment about the raised corners unless he’s talking about a different issue.

33% staggered will look a lot different on 12x24 tiles.

Regarding the tile guy, try to find someone that is certified, then look up the certification to see what was required for the certification. Hopefully he has the certification on his business card or website or invoice.

12 x24 tile can be staggered but with a 33% not 50% that the tile guy should know and maybe check his references before letting him loose . I like 12 x24 to be stacked and both shower walls and bathroom floor same tile same layout and same direction . Where is the blue going and how does it realte to the space . I think I need to know about the blue for sure and Ilike an off center vertical for accent and then that smae accent tile for backsplash.. But you don't just pick a colot out of ahat it needs to work with everyting else .

Agree about the 1/3 offset - that's what I have. But I also want to address the blue tiles that Patricia mentioned. In the picture the blue doesn't look like it goes with your other selections. Maybe it looks better in person, but it looks off here. If that's what you were thinking about for the shower floor, see if there is a smaller size of the larger tile you can use on the shower floor instead. You can always buy blue, green or blue-green towels for accents. It's easy to bring home some towels to try and then return them if they're not quite right, but tile is pretty permanent. I know I made a mistake in my shower floor tile choice in the second bathroom we remodeled. After that I just went with a variation of the floor tile and didn't have any issues in the next two. If you were going to use the blue tile in a niche or somewhere else I think it would be good to give it a second look.

As mentioned, you follow the manufacturer's recommendations for installation. Otherwise, you have no warranty on the product.

I probably did not explain myself well. My tile guy is very highly recommended. Here is a pic of the box. I can not do 50% offset only 33%. He asked if I wanted it straight grid. The teal blue glass tiles were going to be an accent across the shower or vertical up like picture. At this point this cannot be returned and I will use them. I was just wondering if straight grid is popular or will look off. The one photo is a sample of how I wanted to use the glass tiles. I guess from a designer prospective it wasn’t a good choice.

Use the blue tile as a border along the top of the shower

I think the orientation of how the large tile is laid depends on on your aesthetic and the look you are going for, as well as the size of your room. I think the straight grid is more contemporary and currently trendy. So what does the rest of your bathroom look like - fixtures? What color are you painting the vanity or is that the finished look? Do you have a drawing/plans of the bathroom that you can post here?

I really don't like the look of the blue vertical stripe, especially in that small of a bathroom. 1. Just because you have purchased it does not mean you need to use it. 2. Perhaps there is another way it can be introduced into your bathroom - in a shower niche, as a border somewhere.

“Just because you purchased it doesn’t mean you have to use it” - truer words were never said!!! I have stacked 12x24 in my bathroom and it looks great. Used a small square of the same material for floor.