Stacey, I am using Porcelanosa rectified procelain tile, 13x26. My tiles are not in a brick pattern, so all 4 adjacent tiles meet in one corner (if that makes sense). In a few areas, it appears that one corner is lower than the other 3. He is fixing 2 of the 3 I pointed out, but told me that he if he removes the 3rd he might end up having to take half the wall down because it is high and under a marble border. He said he will try to see if he can fix it with grout?? He built me a beautiful bathroom, and I'm not an expert on tiling, but I'm wondering if it could have been done a bit better. Perhaps since the tiles are rectified and the grout line is so thin, these imperfections are more easily seen because the tiles are so close together, versus a larger grout line. I don't know.

I can't believe how many comments there are suggesting that this problem would go away just by various corrective techniques. It's obvious that the tiles are bowed and that no amount of clips, or changes to grout lines, or better plumbing of walls will change that. Many tiles, even some expensive ones, suffer from this firing problem. The first thing I always do when I find a tile I like is put two pieces face to face to look for any gap or bowing. If there is some, it's a problem I don't want to deal with. If I see no problem, I test a few more pairs to be sure. The last shower I had done used 12" X 24" tiles that were dead flat. But I still had them laid in a stacked pattern, with no overlap, just to avoid any lippage possibilities as large format tile always is a challenge: I agree the OP's photos look bad, but the job appears uniform and consistent in its badness. To me this means the tile guy did the best he could with bowed tile laid in an inappropriate pattern for it. His fault was not stopping at an early point to discuss with the contractor and the owner what this was going to look like when it was done. But let's not keep speculating about non-existent solutions for tile that is so severely bowed. This is only going to be fixed by a redo using a different tile that is flat.

Correct, the same, also in matt: https://www.tile-shop.com/products/tuxedo/tuxedo.html So happy with the outcome in our tiny bathroom after the original nightmare, thanks to the help on this site.

I am attaching 2 pictures from slightly different angles. From what I have read online, it looks like it should have been 1/3 offset instead of 1/2 offset for 12" x 24" tiles (I never specified a pattern). The floor is 173" x 83". The subfloor is wood (second story bathroom). Hardie backer board was screwed into the wood. I wasn't given a breakdown of price for different things. The quote was $6,000 for demo and tiling of the shower and floor (labor only). I do not see any standards referenced in the contract. The flooring before was a different tile. I attached a picture I could find of it. In Texas, there is an Implied Warranty of Good Worksmanship, defined below: Implied Warranty of Good Workmanship: The Implied Warranty of Good Workmanship provides a warranty to the owner that the construction, repair or modification of existing property will be performed in a “good and workmanlike manner.” “Good and workmanlike” means the quality of work must be equal to the work performed by someone “who has the knowledge, training, or experience necessary for the successful practice of a trade or occupation” as judged by someone “capable of judging such work.” I am currently searching whether "good and workmanlike manner" means following national standards (ANSI). From what I have seen, "workmanlike" means that it will follow the standards.