Re reading the posts,if there is water under the tiles,is that not a major cause for concern?water should not be under the tiles,if that's the case there is something wrong somewhere
Really? They all seem to think that epoxy has no flex at all, so if there is any movement then it will just crack and then will be impossible to remove. It does sound a lot better than cement grout, though: I wonder why it's not more popular in wet room applications?
It's more giving than standard grout
It's as close to waterproof as you are going to get with grout
And it's more hygienic
I have grouted many a swimming pool with it