Mix of light colored thinset and charcoal grout

Thank you!! That's a relief at least. We have not paid anyhing yet. Is it fixable by scraping out the mortar and re-grouting? It's on half of a 60"x70" room of two inch tiles. Should we expect them to pull it all up and start over? We're new to this.

Our contractor told us he is very busy and will come when he can to talk about it, maybe in a few days. But he said all mosaic floors have bleed through of mortar and we're complaining for nothing, but he might be able to do us a favor and scrape some out.

The skill set sounds really poor here, so the structural alterations and waterproofing will have a high chance of being incorrectly done.

Your contractor is incorrect. His tiler may get mortar in all of the joints and not clean them out, but that is just sloppy and bad technique. Someone without the skills to do a basic application correctly probably did not do any of the more important invisible steps correctly. That is the bigger issue. What did the frame out and previous steps of the project look like? Post pictures of the in progress work.

How did they waterproof the shower and floor? Do you have pictures and if so, post here so the professionals can let you know if it was done correctly.

Thank you all so much. Unfortunately I did not take pictures of the work in progress. I spoke with the contractor, and he said that he used a 60x60" shower pan that is hard foam, and then a kerdi membrane over that that extended a couple inches past the border. And then he used a kerdi membrane on the walls which hangs down about 4" onto the floor.

I attached a picture of the whole room (it's meant to be handicapped accessible bathroom for our son with cerebral palsy). He explained that pan goes up to the wall before the toilet, and beyond that is just concrete slab. He had trouble leveling the shower pan because they had jackhammered into the slab to install the drain and backfilled with gravel, and it ended up higher than planned. So the part of the floor with the toilet is lower than where the pan is, so the water puddles there. He says that the puddle won't be a problem though, because the tile is on the concrete slab (and not a wooded base on a 2nd story), so any moisture would be on concrete and won't cause mold. Is this true? How would you advise I handle this situation? I sincerely appreciate your help!!

That is a full redo. With a different contractor. You do not use a foam pan when creating a wetroom. Nor do you have an area outside the shower be lower, so you get piddles at the toilet. That is design and build failure both.

Aw crud. Thank you so much for letting me know. So I know more, what type of shower pan should have been used?

I had a bathroom project go completely south 5 years ago. We asked about the waterproofing and instead of addressing the problems, the contractor quit. Then they sued us claiming we unjustly fired them. We counter sued and won. After the Saga, I thought posting about it would help others. It's long, but if you want to read some info about protecting yourself in case your situation gets nasty, you can read this here:

https://www.gardenweb.com/discussions/5725013/what-to-do-when-a-project-goes-completely-south#n=66

I'm sorry this is happening to you. Take the couple of days before your contractor comes to talk to you to make a plan of action. Communicate by email or text only so you have a record of all communications. Have a friend, spouse, or neighbor present with you when the contractor comes over. Don't be alone.

Good luck and let us know what happens.

It's obvious he didn't follow TCNA standards. :(

Thank you all so much for your help! This has been really helpful. Ugh, @AJCN, that's an awful experience. I sure sure hope we can avoid a suit mess. Thank you so much for sharing your story details.