The service life of many building materials, especially wood, in conditions of high humidity is significantly reduced. In residential buildings, the ground floor floor is in direct contact with the basement, where it is damp and cold all year round. In this regard, many customers ask the question: is it necessary to make airways in the foundation of a wooden house?
Products, or the vents are through openings (holes) located above the ground surface in the foundation, in the walls of the basement or on the floor of the basement room. Apertures made in accordance with building codes provide adequate ventilation of the air, due to which evaporation and moisture release to the street occur.
Lack of airflow in the foundation leads to the following:
The result is rotting and destruction of materials.
As a result of the above, never, including during the cold season , do not close the product. But in order to reduce heat loss, it is necessary to warm the floor with high quality.
Another serious reason for making airs is the accumulation of radon gas in the unventilated basement room, which, sometimes very actively, is released from the soil. If the gas has nowhere to go, it starts to leak through the micro-gaps into the living room.
Radon - natural gas characterized by radioactivity, is dangerous to human health.
On our website you can find contacts of construction companies that offer the service of repair and design of the foundation. Directly to communicate with representatives, you can visit the exhibition of houses "Low-rise Country".
There are enough cases when the holes in the foundation are made, but the humidity in the underground has been kept at an unacceptably high level. This can occur for the following reasons:
Avoid high humidity by properly arranging vents.
A sufficient number of air vents of a certain area, especially when combined with an exhaust riser, ensures optimal air movement, which prevents premature destruction of wooden structures, in this case the floor.
First of all, it is necessary to perform calculations correctly.
The number of products is determined per unit volume of the basement premises according to SNiP 31-01-2003. According to this document, in the basement of 400 m 3 it is necessary to form at least one aperture for ventilation. In areas characterized by a climate with high humidity, produce products in the amount of 1 pc. for every 100-150 m 3 .
In the walls of the basement, air ducts are also carried out; in one internal wall, there must be one large through hole, or several, as in external walls.
For better ventilation, the vent with the exit to the street is done not only in the walls, but also in the floor. They must ensure the free movement of air, draft.
It may be interesting! In the article on the following link read about building a house on a foundation of screw piles.
When designing products, they take a particularly responsible approach to their location. The calculation of products in the foundation is made on the basis of the following rules:
Good ventilation, ensuring optimum air movement under the floor, creates an even number of symmetrically arranged air vents.
The shape of the ventilation holes can be round, triangular, square and any other at the request of the owner.
Openings of a rectangular or round shape are most common, when they are formed they often choose sizes:
The normative document recommends organizing a production area in the range of 0.05-0.85 m 2 . A larger area opening, according to the rules, must be reinforced.
. Private traders prefer to make more holes with minimum dimensions Small vents look more beautiful. The main thing is that the total area of all vents corresponds to the norm.
Products are created during the construction of the foundation. The complexity of the work depends on the material from which the tape construction is made. Each option has its own nuances.
In a concrete foundation, it is easier to make round air-flown. To form them, plastic or asbestos pipes are used, the diameter of which is determined according to the calculation rules presented above.
A plastic pipe is inserted into the reinforcement cage, fastened together with a wire. The main thing is that the resulting assemblies (future produkhy) were installed in the formwork for pouring concrete in the right place and in the required amount.
The pipe is filled with sand beforehand, it protects it from breakage. After the concrete solution hardens, the sand is removed, a round through hole in the basement wall is obtained.
Sometimes through openings in concrete are made with wooden chocks that are installed in the formwork before pouring mortar. So you can not do! Wooden elements after hardening of concrete is very difficult to remove. They have to be beaten out by applying sufficient force, and the integrity of the foundation itself is damaged.
In such a foundation it is advisable to construct a rectangular or square-shaped product.
When organizing openings, you must use a reinforcement cage. Its rods in the foundation are placed on a horizontal plane, in which case it serves as a support for the upper parts of the masonry.
Half or part of the brick is used in the brick foundation for production during laying, the result is a square or rectangular opening.
Sometimes there are situations when they did not make products at the construction stage of the foundation. In this case, it is formed in the already finished design.
The main difficulty of the issue is the availability of a specialized tool, because drilling a hole will require diamond drilling. If there is no necessary tool, and its cost is quite high, it is better to turn to professionals - this will allow not only to save on the purchase, but also to ensure better performance of work.
The through openings should be closed not with deaf, but with the air passing through the grids. Plugs are installed on a mandatory basis, they protect the underground from the penetration of rodents, cats, birds and other animals.
Many different types are offered for sale, which are fastened to the outside hole:
When choosing a product, it is necessary to pay attention to the presence of a check valve.To ventilate the foundation, the valve is an unnecessary element (it must always be open, and this will have to be monitored). You should choose options without it.
Conditions are defined , the presence of which allows to do without airs:
Often the question arises: are we need airways in the basement without a basement? If at least one of the first three points is fulfilled, there is no need for productions. In other situations, vents are required.
It may be interesting! In the article on the following link read about which foundation is better.
Products in the basement are not the most important element of a house. However, the period of operation of the wooden structure depends on the proper ventilation under the floor. It is very important not to make a mistake at the initial stage - to correctly determine the number and area of through openings.