Expanse on the foundation are a kind of visors designed to protect the foundation of the building from the destructive effect of atmospheric precipitation. A relatively small constructive element is able to ensure the safety of a huge structure, reliably covering the base and the foundation from direct moisture hits.
Protective functions of castings
Despite the impressive monumentality of any solid mansion, the reliability and durability of the structure depends on many structural elements, each of which requires separate attention and respectful attitude.
A solid stone or brick house is defenseless before the constant effect of precipitation, moisture is destructive for all buildings without exception. The reason lies in the fact that in the warm season, water fills the micro -general in the foundation, gradually layers of bricks lying on the foundation are impregnated with moisture. In the cold season, water at minus temperatures freezes. Since freezing water increases in volume, the formed ice in the microcracks of the walls and foundation swells and begins to destroy the building material.
In summer, cracks will appear on building structures, begins to disappear in whole layers of plaster, bricks can fall out, that is, there is a start of the process of destructive deformations of the structure that can develop into catastrophic destruction.
In order to exclude the sealing of water into the smallest cracks and thereby ensure a complex protection of the structure at the most vulnerable points and areas, tints are used. They eliminate visible gaps between the main design and the details of the facade surface, avoiding sealing of water into protected gaps. As a result, the structure acquires high operational properties and the ability to last a long time without repair.
Since window blocks, foundations and basement areas need to be in defense, tints are also divided into appropriate types:
Window castings;
Tints for the basement of the foundation;
Expanse for foundations.
The task of window and basement castings is the protection of gaps formed by window frames or facade elements from the penetration of moisture into them. Whereas the purpose of casting for foundations is reduced to protecting the masonry of the supporting structures.
Features of castings for the foundations of residential buildings
The foundation is the basis of any building. The period of unconscious operation of the entire structure depends on its strength and integrity. Initially, the foundation is built as a strong and wear -resistant design. But even he is not able to withstand the effects of atmospheric precipitation and leaking moisture, if at the construction stage do not worry about its full protection.
If in the dry state the base of the house is able to perform the functions assigned to it, then after a long constant contact with the humid environment, it not only loses its strength, but also loses its integrity, which unambiguously leads to the destruction of the building. A similar situation occurs with facades made of natural stones or facing tiles. Due to the effects of moisture for several seasons, facing materials will simply fall off.
Structurally, the ebb for the foundation is a visor made in the form of an inclined shelf with bends. One edge with a bend of the ebb adjusts to the wall, another edge with a bend hangs over the foundation. The photograph shows the tints of the classic shape.
The manufacture of castings is carried out by various options:
factory technologies oriented to the production of unified models;
manufacturing by pre -issued order;
Independent manufacturing in place with the possibility of adjustment, how to establish taking into account the actual size and their changes around the perimeter of the building (the so -called radial castings, repeating all the turns and bends of the foundation of the house).
Materials for castings for the foundations of residential buildings
Currently, castings perform two functions:
protective, preventing contacts of building structures with atmospheric precipitation;
aesthetic, because they give the facade part of the house a complete pattern. Well -chosen dimensions and coloring of castings will only decorate the outer part of the building.
Products from various materials are used to install castings on the foundation:
steel with a polymer coating of various colors. The polymer film significantly lengthens the life of the tolls, preventing the development of corrosion processes;
Steel galvanized products. Their rating is extremely high due to the accessibility of the material and the ease of processing. The blanks are easily cut, they can be given the necessary shape without much difficulty;
plastic with a service life of several decades. However, the fallen icicle leaves the hole in the tape, since the strength of the plastic is not high;
Copper tints, now not popular, are used in the construction of high -rise buildings;
concrete, used exclusively for installation on the foundations of fences.
Rules for installing castings on the foundation
All measures related to the manufacture and installation of castings are required to ensure maximum moisture insulation of the building as a whole and the foundation in particular. Therefore, before installing the tide, it is necessary to make an audit to the walls and the foundation for the presence of chips, cracks or other flaws. Detected defects should be covered with sealant or putty.
The conditional diagram of the installed tint is shown in the figure. To enhance the waterproofing effect, the foam plates are often laid between the casting plate and the protruding part of the foundation or the installation foam.
The installation of castings on the foundation is inextricably linked with the solution of the issue of how to make castings on the foundation of the corresponding configuration and size. After the manufacture on their own or the purchase of tide of the factory -made, the ebbs are attached on the supporting structure of the facade of the building using screws with plastic bushings.
In the process of installation, it is necessary to maintain the necessary slope for the casting around the entire perimeter of the structure.