1. Install wooden keel above ceramic tile dado, install wooden keel above ceramic tile dado, and then install wallboard on keel. This method can keep a certain distance between the wallboard and the tile dado, avoid direct contact, and make the wallboard more firm.

2. Install the wallboard directly on the tile dado, which is not very high than the wall. You can install the wallboard directly on the tile dado. This method needs to use a special wallboard adhesive to stick the wallboard to the tile dado.

3. Install gypsum board above the tile dado, install gypsum board above the tile dado, and then install wallboard on the gypsum board. This method can make a certain distance between the wallboard and the tile dado, and also make the wallboard more firm.