How to make a blind area of the foundation
During the construction of a private house, every future owner hopes that his home will serve for several centuries, giving its warmth to children and grandchildren without major repairs. Unfortunately, this is not possible, but in time carried out competent repair and maintenance during operation will maximize the service life of the structure. One of the most important skills you need to acquire is how to properly make a blind area of the house foundation.
Installation
The blind area is a structure that is designed to divert rainwater or other water from the base of the house. Not to be confused with waterproofing, because they are completely different things. It is designed to enclose a waterproofing, thereby enhancing its functional and operational qualities. By diverting water from the surface, the pressure on the waterproofing located below ground level is reduced. Thus, the durability of both the foundation itself and the building itself increases.
The blind area is made around the house with a minimum width of 80 cm. The more it will be, the better will be the discharge of atmospheric moisture.
Having determined the dimensions, make a markup and remove a layer of top soil about 20 cm thick. This is necessary in order to get rid of plant residues, roots and seeds that will have a damaging effect on the concrete. If possible, call the specialists who will treat the pesticides that prevent plant growth. However, this procedure is not required.
When removing the soil layer, try to make a slight slope in the direction of understating the surrounding area. The best option is the device drainage system on the outer edge, which completely eliminates the interaction of groundwater with the base of the building.
Design
Design предусматривает подстилающий слой и покрытие. Подстилка выполняется из глиняного влагонепроницаемого слоя, который укладывается в заготовленную яму с последующей тщательной трамбовкой.
The role of the coating is played by a concrete or asphalt layer, with a thickness of 10 cm. For the manufacture of the blind area, crushed stone, gravel, brick fragments and construction debris are used. All components are carefully rammed, and then poured over with a solution of cement.
When pouring the coating, it is necessary to install separating slats pre-impregnated with oil and treated with bitumen. Otherwise, the coating will be covered with cracks when frost occurs, and the slats will prevent it.
The slats are arranged in steps from 1.5 to 3 meters. To increase the strength of the concrete layer, it is necessary to fill it with dry cement and wipe with a trowel until the concrete grabbed.
Design может быть разнообразной, единственное условие, которое необходимо соблюсти – это водонепроницаемость.
We make from sand
In order for the blind area to perform not only a protective, but also a decorative role, it can be made of sand. Sand poured into a trench, pour it with liquid glass and hardener. This makes the surface very hard and durable. This coating will protect the foundation from moisture penetration and decorate the landscape with its appearance. You can buy a ready-made solution at a specialty store, or a semi-finished product that requires cooking.
We make from turf
During the absence of cement, the blind area was successfully made from turf. To do this, you will need to do the following: remove a half-meter layer of soil around the perimeter, tamp the soil and build a drainage system of coarse sand.
Next, you need to fill the clay layer, followed by tamping and the formation of an inclined water flow. After that, you will need to lay fertile soil and meadow sod. For some time, it must be moistened and trimmed to form an elastic turf, which is not amenable to blurring. Such a green structure looks more attractive than a concrete one, sometimes it is impossible to guess what is under it.
Care during operation
The main functional purpose of the blind area is to protect a residential building from the negative impact of rain and surface water, and the technical solution of the design is determined by your preferences and the surrounding landscape.
This structure needs to be constantly monitored, since the emerging cracks violate the tightness and must be sealed with a solution of cement. In case of separation from the foundation, use sealants to fill the space. This will help you not only increase the durability of the structure, but also to preserve its aesthetic appearance.
When installing, you should strictly follow the main technological requirements.
Video
More information can be found in the following video: