3. In the store, buy frost -resistant glue for concrete tiles. Dilute it with water until a homogeneous mass. Make sure there are no lumps. Apply a comb (smooth part) glue on the base. You need to do this in two layers. The first will be preparing. Aligning, and on the second you already need to glue the tiles. Apply the second layer of glue to the gear part of the comb.
