A blind area is a strip of 0.5-1.2 m wide, adjacent to the foundation of the building, serves to divert atmospheric waters and protects the walls from destruction. It is necessarily with a slope of 2-10% of the facade, so that the water is easy to drain. For the device, the upper layer is removed around the perimeter of the facade, a drainage is laid instead of it — a layer of crushed stone or sand. The concrete blind area is made if the foundation at home does not have reliable waterproofing. The thickness of the preparation is 10 cm, the blind area itself is 7-10 cm. From the wall it is separated by a compensation seam. Disadvantage — over time, concrete inevitably cracks. A blind area of concrete paving stones occurs more often. The paving stones are laid on a layer of 5 cm crushed stone or sand, the gaps are filled with sand, and the edges of the paving stones are decorated with a curb. They also lay a blind area from stone
