Repair guy was prompt, polite and friendly. Unfortunately it appears he was not very experienced. We expected that they would replace the cracked grout with new grout. The method for that is to dig out the old grout and replace it. What he used was actually a caulk material. It said it was "grout" on the tube but it was a rubberized, sanded material that had much more in common with caulk than grout. So, maybe it would be ok.... but I was doubtful. I had marked all the areas to repair with blue painters tape. He caulked the cracks at the floor of the shower and around the recessed tile shelf. Unfortunately he missed the blue tape on the upper corners of the shower. After he left the areas he repaired did look better. Unfortunately, two days after he left the caulk at the corners of the shower floor was splitting and gaps opened up. We called and they were quite apologetic and sent the guy out again. He explained that the shower should have been allowed to dry out a few days since moisture caused the problem. It would have been helpful if they told us that before the repair. Anyway, he recaulked the floor and also the areas he missed. I must admit that now the repairs are holding up well and they look pretty good. I would have preferred real grout, installed in the traditional way, but this repair is working.