I recently tiled my bathroom floor with 12" x 24" tile. I used 1/2" square trowel with thinset for large format tile, and also used leveling clips. As this is what most DIY tutorial instructed. I did not use mallet or level throughout the process.
After everything is dried and done, I put a chair on the bathroom floor and noticed that the chair would rock on it, as the tiles the chair legs rested on were at slight different heights. Now I am not planning to put desk and chair in my bathroom so I am okay with this, and since I cannot feel the unevenness or any lippage with my foot. However I assume this could be an issue if I am tiling a different space such as bedroom or basement, and furniture won't sit nicely on the tiled floor.
Would professionals be able to install a tiled floor perfectly flat? How would they even do that?
Any insights are welcomed, thank you.