Then you need

Before starting the construction of the walls, it is necessary to prepare the solution, adhering to the technology. It is on it that brick is laid, as if adhering to the chosen type of dressing. Building materials must be laid, slightly pressing to the solution. In this case, some part of the solution is squeezed out between bricks, as a result of which the connection of the masonry increases significantly. Then you need to knock a brick and push the trowel to get a completely even seam, placed vertically.