Many people in the construction of the house wonder if they need a blind area. In this article, we will try to answer this question. Also we'll talk how to equip it around the house and calculate the amount of material.
Content
Do you need a blind area around the house?
Blind area is a waterproof strip around the house. It is made of concrete or asphalt on the perimeter of the structure. And do it with a deviation from the house. It is designed to protect the foundation of the structure from atmospheric precipitation.
In general, it performs the following functions:
- decorative - gives the house a finished look;
- protective - thawed water does not contact the foundation, preventing its destruction, in addition, it can be provided for draining the sediments into the sewerage or drainage;
- thermal insulation - blind does not allow to freeze the soil at the basement, thus reducing heat losses (the floors in the house will be warm);
- prevention of swelling of the soil - this is very important, because blind area will prevent this phenomenon and the foundation will remain intact.
From the above, we can conclude that the blind area is simply necessary. It will serve as a walkway around the house and protect the foundation from moisture. Therefore, the answer is obvious, blind area is needed.
Blind area around the house of concrete price
The cost of the blind area depends on the area of the house and the number of building materials for it. When doing the work yourself you can calculate the number of boards, the volume of clay, sand, gravel and concrete. It is not difficult to calculate the dimensions of the space to be filled. If you plan to hire workers it is necessary to take into account the seasonal factor (in spring, and in summer construction materials are becoming more expensive). It is also necessary to assess the access roads, the simpler the technique to drive, the cheaper the work will cost. You need to know that the average square meter of the blind area costs from 1200 to 3000 rubles.
How to make a blind area around a house of concrete
We have already spoken about the function that the blindway performs earlier and there is no doubt about its necessity. But it must be done correctly. The simplest version is a concrete pavement with a width of 60 cm, surrounding the house from all sides.
To ensure that it fully fulfills its functions, it is necessary to observe certain rules:
- the width of the blind should be wider than the roof projection, the minimum size of the roof should be + 20 cm;
- it should be a solid line around the house, then the base will be reliably protected;
- the wider the blind, the better it protects against moisture;
- it is necessary to make a blind at an angle of at least 1.5 degrees from the house, this will ensure a good outflow of water.
Knowing these simple rules you can equip the blind area of your house, protecting it from the effects of moisture.
device blind area around the house of concrete
The durability of your foundation and its technical condition depends on the quality of the blind area. This will save you from repairing the basement floor and save your money. It is made up of two main layers. The first or the underlying layer is designed to create an even and dense base. For its construction use clay, sand and gravel. They are poured in layers and compacted. The thickness of this layer can be 20 mm. The second layer is called the cover. It serves as a waterproof layer and protects against the moisture of the wall of the house. Its thickness is 10 mm. It can be made of concrete, asphalt or small cobblestone. These layers are necessarily present in any area. Knowing its device you will not have problems in arranging housing outside.
thickness of blind area of concrete around the house
Of course, in each case, the thickness of the blind area will be different. It depends on the soil and the terrain of the site.
On average this value is:
- at the base of 15 cm;
- on the opposite side 10 cm.
These are average indicators, but even this thickness is quite enough.
Blind area around the house with your own hands made of concrete, step by step
You decided to make a blind on your own.
In the beginning it is necessary to prepare the necessary materials and tools, namely:
- sand;
- crushed stone;
- clay;
- reinforcing mesh;
- waterproofing material (for example, roofing material);
- boards for formwork;
- shovel;
- master OK;
- herbicides.
The whole work can be divided into stages.
We list them step by step:
- first of all it is necessary to make a marking and remove the soil to a depth of 25 cm;
- now it is necessary to treat the soil with herbicides for disinfection;
- from the boards we make the formwork and we compact the earth;
- further lay layers of clay, sand and also well-compacted and top to fill rubble with a thickness of about 8 cm;
- on top of the backfill we lay reinforcing mesh, which will allow to withstand the load on compression and stretching;
- in the place of contact of the blind area with the foundation it is necessary to make a waterproofing, the roofing material is fastened with bitumen in several layers, the width of this joint is allowed to be 1 - 1.5 cm;
- now you can pour the solution into the formwork.
This completes the work. During the week, it is necessary to water the concrete to prevent it from drying out and the appearance of cracks.
Helpful Tips
When performing the blind, you must independently adhere to the strict course of work. Do them slowly and accurately. If the cracks appear on the surface, they can easily be repaired with a liquid concrete solution. In case of significant destruction, it is necessary to dismantle this part and make a section of the blind area according to the new one. These tips will help you with construction work.
This article describes the blind area. It is said about what role it performs. Describes its structure. Thanks to the advice of the article, you can independently make a blind area at home and protect its foundation from excessive moisture.
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