Why do you think these pretty plastic cylinders are inserted into the installation holes? These are mounting plugs. Their first purpose is that during the repair period it does not stink from the sewer and that nothing extra gets into these holes. And the second purpose – it is for them that the tiler should cut holes in the tile. The task is to cut out such holes that will allow you to lay the tile in the right place without touching the plug!
What do some tilers do (in fact, quite often): seeing in these plugs an obstacle for gluing the tiles, they throw them to the damn grandmother, cut holes as they seem right to the eye.
Then the plumber comes to install the toilet and there is a surprise – the holes are smaller than the diameter or are shifted to the sides or of an absolutely incredible shape! And the plumber is forced to jewelry, to cut/grind something in the finished clean bathroom. As a result: the tiler did the work of the plumber – pulled out the plugs, the plumber did the work of the tiler – sawed holes in the tile. It seems that everything came together, but the consequences can be unpredictable)
Or, for example, plugs on concealed mixers. Here’s the idea: after laying the tiles, a plastic plug is removed and a chrome-plated cap is inserted, which should be put on the body and go inside, under the title to the base of the mixer body. That is, there should be a gap between the tile and the mixer body, which is provided by the plastic mounting plug!
“I missed the hole – it doesn’t matter, I plied it with pliers. Still not climbing? What the hell is some kind of plastic cap? We remove it and, Voila !!! Climbed! Oh, and here they stuck the cap, well, kindergarten, straight, throw it out all together! ”
And one more equally important point, so as not to get up twice (in fact, more important): the material used to cover the installation should fit tightly to the installation frame and fasten to it!
Plumbing, sometimes (depending on the initial conditions), has to use all its ingenuity, engineering idea and a bunch of additional fasteners so that the installation is monolithic, because the toilet bowl must be rigidly supported by the installation frame (through a layer of drywall and tiles) – because it guarantees that it does not loosen over time.
What a disappointment this plumber is when he comes and sees that the installation is sheathed in such a way that the drywall is a centimeter away from the frame !!! All his efforts went to dust, and the customer received an “amortizing” and “crispy” toilet.
Be careful! All successful repair.