They are attached to the walls.

By smearing the tiles, you can stick them, roll them with a heavy roller and tap with a rubber hammer. The walls must be left gaps, in case of temperature expansion of the plates. All gaps will be hidden under skirting boards. They are attached to the walls. Between them and the floor, a small gap should be set aside, which will allow the floor to avoid deformation processes. After the end of the work, all the excess glue is best removed by the White Spirit moisturized in the solution by a rag. Then the coating should dry (about a day). Tiles can be again processed with special compounds, but only after their drying out. Then you can apply a protective layer. At the end of three days, the cork coating can be protected with a layer of varnish.