It will seem to many a very difficult task to hang several shelves in the bathroom, since there is already tiles, and thus it can be easily ruined. In order to do this without negative consequences, you need a professional approach.
The process looks as follows. We take a drill, a felt -tip pen, a painting tape and a wet rag. And then you need to clearly follow the instructions. First, with the help of a felt -tip pen, it is necessary to outline the place where you need to drill the hole. Next, stick a piece of painting tape to this place. The tape will not allow the drill to jump off. But first you need to clean the outer layer “Glaze”. This can be done, for example, with the help of a sharp end of the file.
Then we insert a drill to the drill, which is designed for glass. And begin to slowly drill and gradually increase the speed. With the other hand you need to hold a wet rag, while pressing it slightly below to the wall. This is done so that the dust that will occur during drilling falls on it.
Then we change the drill, to the one that is suitable for the wall under the tile (slightly smaller). At the end, remove the tape and insert the dowel into the hole.