Question: I am installing a powder room. I plan on ceramic tile for the floor. Does the tile need to have grout under the toilet, and if so does the grout need to be sealed under the toilet, and if so, how long do I have to wait after grout and/or sealing before I can install the toilet?
Answer: At the time you’re grouting the tile, it would be just as easy to grout under the toilet. The toilet will be removed at this time, so there won’t be any extra time involved in doing so. As far as sealing the grout under the toilet, it really isn’t necessary, but if your toilet hasn’t been put back at the time you’re sealing the rest of the floor, go ahead and seal it, also. Either way should be fine, whether there’s grout or sealer under the toilet or not. It’s best to install the toilet back after the tile has had time to bond to the floor, which in most cases is approximately 24 to 48 hours. You could even grout the floor after the toilet has been reset, if you wish.
Hope this helps,