I prefer to wait to add reviews until the work has had the chance to stand the test of time. I had Grout Pro perform a shower tile and grout cleaning and sealing, as well as recaulking, in January of 2016. The bid process was great, Brian, the owner, was very professional and punctual. He came out to do the estimate on a Friday night at 7:00, demonstrated that he knew his work, and took the time to thoroughly answer questions, etc. Brian was exceptionally busy, so to schedule with him would have been months out, or he could get one of his employees to handle the job within a couple weeks. I scheduled for one of his employees, which was likely the mistake. The job was to deep clean all the grout, which was growing mildew, apply a professional grade grout sealer, and recaulk the entire shower area. The grout sealer was described as something that should last many years, better than the "10 year" sealers available at the big box stores. It has been just over two years since the job was done, and mildew has returned in some of the places where it was before, as well as showing signs of showing up in new places. I have had to recaulk both corner walls of the shower myself since the completion of the work, as the caulking product used also grew mildew, as well as would wash away and disintegrate when I cleaned the shower. The important area of caulking around the glass shower doors was not replaced as detailed in the quote and is showing significant mildew. Unfortunately, the warranty on the work is for one year, and as most of the issues started reappearing after that time, I paid a very premium price for materials and work that has not lasted even two years. This grade is a "D" because of Brian's professionalism and reputation for doing exceptional work. Unfortunately, he did not do my job. I happened to be describing this experience to a close friend of mine, who it turns out had also used Grout Pro for his shower. He had a nearly identical experience with another employee completing very sub-par work. He was able to call Brian immediately, who came out and redid the job above my friend's expectations. I wish I had that luxury if I had been inside the warranty period. If the expectation was that the grout cleaning and resealing would last such a short period of time, I would never have considered spending this much on the job.