There are different types of mechanical fastening for glued ceramic facades on the market. They are steel anchors, fixed to the wall, by means of a brick plug and stainless steel screw and that secure the tile against sagging due to failure of the adhesive cement.
In addition, when the format is larger than 40x40 cm, in addition to a cement glue, a mechanical safety anchor is required according to the new CTE.
They can be anchors that secure the tile by the edges and can be seen or hidden, or from behind by means of an inclined groove, leaving the anchor hidden.
They are different systems that must be valued, since the installation has its difficulties and requires labor time.