Do Not Make Liquid Glue, Otherwise It Will Drain from the Surface. The Tiles Before Laying are Processed with A Metal Brush and Applied to the Back of the Side so that Strips From the Teeth of the Spatula Looken F The Stripes from the Spatula on the Wall. The Adhesive is Applied Very Carefully and Accrasatly, Trying Not to Stain Facing Material. In the Future, Cleaning the Tile from Dried Glue Will Be Difficult.