Do-it-yourself repair of the foundation of a brick house: identifying the causes, choosing a method of restoration. Do-it-yourself repair of a broken foundation of a brick house Foundation of a brick house Restoration of the surface layer

No matter how good your house was, time spares nothing, cracks appear one after another and restoration work has to begin. Do-it-yourself repair of the foundation of a brick house not easy to produce, but real. Before doing anything, it is necessary to determine the cause of the damage that has occurred. There are cases when unfavorable natural conditions lead to one-time injuries, as in the photo, which do not progress and do not recur, so we start with the diagnosis of damage.

Definition of deformation movement

The easiest way to determine whether a house is currently being destroyed is to install plaster or paper beacons. Gypsum is applied to the cracks in at least two places and observe what happens to them. If they remain intact, then it is enough to bring beauty and make cosmetic repairs to the facade. If they gave a crack, do-it-yourself repair of the foundation of a private house is waiting for you.

A more complex way that will allow you to more accurately determine the problem is digging holes. After choosing a place with the most damage, you need to dig a hole near it. Thus, you will see the material from which the foundation was laid, the degree of its destruction and the presence of waterproofing. If the site has a high level of groundwater, then they will fill the pit.

Foundation repair options

If the foundation collapses as a result of flooding, then you will need drainage or drainage if groundwater is the culprit of the damage. Drainage is carried out in the form of a baffle barrier, which, with the help of grooves, directs the flow of water from the house, and, from 80 centimeters in size.

The foundation can collapse if its base lies in the zone of soil freezing. Moreover, heaving soils will cause special damage. In this case, you need. A trench is dug along the foundation, deep to its sole. The pit is partially filled with material that does not expand in the cold, no matter how much water it absorbs, such as crushed stone or sand. The remaining space is covered with insulation, a blind area is arranged on top.

Strengthening the foundation of a brick house is the most difficult type of work during its restoration. They make it in small sections so as not to provoke destruction. The foundation is dug up, preferably from both sides, a new layer is poured under it, while reinforcing the screed. The process of repairing the foundation of a brick country house with your own hands is much more difficult than performing similar repairs to a wooden house.

Is it worth it to repair the foundation with your own hands?

Restoring the foundation is a rather difficult and dangerous job. It is categorically not recommended to perform it alone, you need at least three people. When starting repair work, carefully study the information. During work, be careful, use insurance.

It is better, of course, to entrust this work to specialists, and do something more creative and easy yourself.

Do-it-yourself foundation repair video

For clarity, below you can watch a video of repairing the foundation of a brick house with your own hands.

Owners of their own brick houses of unsuccessful or old construction are often faced with the need to solve problems caused by deformation and destruction of the foundation of the house. Such a problem for brick (stone) private houses is very typical due to the rather large weight of brick walls in comparison with walls made of lighter building materials, for example, wood.

The appearance of cracks in the foundation is a dangerous sign of the beginning of the destruction of a brick house, threatening to lead to distortion and destruction of walls, ceilings, as well as the entire supporting structure. If the necessary measures are not taken in a timely manner to

restoration (strengthening) of the foundation, the house may become uninhabitable. A well-repaired foundation of a brick house will not only stop the current process of subsidence and distortion and prevent its continuation, but will also provide excellent conditions for the construction of a second floor.

Reasons for the destruction of the foundation

Some houses stand intact for centuries, while others collapse after a few decades. It also happens that the destruction of the house begins even before the end of construction. As a rule, the main factor in the difference in the life of a building is the quality of the foundation. If over time the first signs of destruction of the foundation of a brick private house appeared, then to solve this problem, it is necessary to repair it. To do this, you must first establish the causes that caused this destruction.

There are three main groups of factors leading to the destruction of the foundation of a brick house: flaws in the construction of the foundation, human activities, and the influence of the natural factor. In the first case, during the operation of the building by people, the foundation can be soaked with tap water. As a result, wetting and freezing of the soil and the foundation of the structure occurs in the winter. In the second case, the reasons for the destruction of the foundation may be the poor quality of the solution or an illiterate design. In the third case, for example, seasonal heaving of soils has a detrimental effect.

Signs of destruction

The main sign that something is wrong with the foundation of a brick private house is the presence of depressions and cracks at its base. During the shrinkage of the building, the foundation may give cracks that will not progress and require only cosmetic repairs. It is necessary to stick a paper tape across the cracks and observe its integrity for ten days. If after this period the tape remains intact, then it is enough to fill the crack with broken bricks and concrete it. If the tape turned out to be torn, then this means that the foundation will continue to collapse in the near future, and therefore it is necessary to immediately restore it. Self-repair of the foundation of a brick house can be performed only for tape and pile structures. Repair of reinforced concrete and concrete foundations requires specific skills and knowledge, as well as the availability of special construction equipment, that is, the involvement of professionals. The only thing you can do in this case on your own is to strengthen the foundation.

Preparing to repair the foundation

Carrying out repairs to the foundation of a brick house should always be preceded by a thorough technical examination. Accurate and reliable identification of defects that affect the bearing properties of the base is extremely important for the correct selection of the repair method. In the absence of experience in performing such work, specialists should be invited who are able to make a professional assessment of damage to the foundation.

Strip foundation repair

The strip foundation can be exposed to local heaving of the soil, due to which the base of the house is skewed. When repairing such a foundation, the first thing to do is to balance the impact of external factors on the foundation. The easiest way to do this is to increase the base area. Before strengthening the foundation of a brick private house, it is necessary to select a section of the wall with a length of no more than two meters and proceed to strengthen the foundation of the house according to a fixed scheme. Near the building, you need to dig a ditch, the distance between the bottom of which and the lowest point of the existing base should be about one meter. Then the old foundation is prepared with a new foundation. To do this, holes are made for strobes and fittings. Then the formwork for the new foundation is made. In this case, it is necessary to connect the frame from the reinforcement, which is subsequently linked to the reinforcement inserted into the building. After tying the frame of the building, everything must be poured with concrete. When the concrete is completely dry, the updated foundation must be dug in, and then a new trench must be dug. On one side of the house, work can only be done on one site.

Pile foundation repair

The columnar (pile) foundation is usually designed for small loads. Repair of a columnar foundation involves moving the house to an almost new foundation. When carrying out such a repair of the foundation, the following sequence of work is performed:

The building is installed on temporary supports. At the same time, you can continue to live in the house.
The poles are being dismantled.
A trench is being dug under the house.
A sand cushion is being compacted under the house.
A well-reinforced tape twenty centimeters thick is poured.
Poles are installed on the reinforced tape.
Prefabricated or monolithic reinforced concrete beams are being installed. The beams are arranged between the pillars like a strip base.
In case of significant destruction, the poles are taken into reinforcing steel clips.
The house is lowered onto a freshly made foundation, its position is adjusted to the optimal opening of doors and windows.
The old foundation is being dismantled.

Strengthening the foundation with bricks

You can strengthen the rubble base of a brick house with bricks, cement mortar, clay and waterproofing material. A foundation reinforced in this way can last for several more decades. Therefore, this method is considered one of the best. Work should begin with excavation near the base. It is necessary to make a trench about a meter wide with a depth of up to half a meter. Then it is necessary to thoroughly clean the upper and lower parts of the foundation, otherwise it will not be possible to strengthen it qualitatively.

After doing such work, it will be possible to detect all kinds of damage that the base of a brick house has. They must be sealed with cement mortar. Then you have to wait for it to dry completely. After that, the foundation is pasted over with roofing material or covered with bitumen. At the last stage, bricks are laid using cement mortar near the base of the house. The resulting gap between the masonry and the foundation must be filled with greasy clay. Then the created structure must be left for seven to twelve days, after which it is necessary to fill up and compact the soil near the brickwork.

The procedure for laying the foundation below the freezing depth of the soil

Often the foundation of a house is built so that its base is lower than the depth of freezing of the soil. In this case, the basis is practically not exposed to the soil, which has a lifting character. In this case, a situation may arise in which the soil is washed off from it by groundwater. Therefore, before strengthening such a foundation of a brick private house, drainage work should be carried out. First, drainage systems must be installed, and then all concrete destroyed by groundwater must be removed. After that, both repair and restoration work can be carried out on the basis. To strengthen the foundation of a brick private house on such a basis, you need to do almost the same as in the case of a strip foundation. The only difference is that after the repair work is completed, it is necessary to install additional protection against moisture so that it does not cause great damage to the house.

Foundation waterproofing repair

It is also necessary to repair the foundation of a brick private house when water appears in the basement, underground or cellar. This is a sign of a violation of the waterproofing of the basement and / or foundation, which, ultimately, may adversely affect their integrity. There are two types of waterproofing: painting and pasting. Painting is a bitumen mastic applied to the surface of the masonry, pasting is made from rolled materials (brizol, hydroisol, roofing material, etc.), which are glued with the same mastic. In addition, cement (made of special cement) or asphalt plaster is also used for insulation.

Pasting and painting waterproofing is carried out on both vertical and horizontal surfaces. Vertical insulation is arranged on the wall, which is directly adjacent to the ground (to the level of the sidewalk or blind area). Horizontal insulation serves to protect the basement and walls of the house from ground moisture, which penetrates from the base of the foundation. In basement-free houses, it is produced in the basement, 200 millimeters above the level of the blind area or sidewalk; in basement buildings, horizontal waterproofing is arranged at two levels: at the basement floor and in the basement above the level of the blind area or sidewalk.

Particularly severe cases

Repair of the foundation generally increases its bearing capacity, which prevents further destruction of both the foundation itself and other structures, as a result of which the duration of operation of the entire house increases. However, it should be borne in mind that there are cases when the repair work carried out to strengthen the foundation does not lead to the desired result. Cracks on the walls still appear, the basement is flooded with water, the house sags in old or new places. In this case, it is necessary to make a decision to change the design of the foundation, which will require the reconstruction of floors, walls, and so on.

Repair time

Knowing the rules and methods of repairing the foundation of a brick house, like the foundation of any other structure, is not enough. It is necessary to choose the right time to carry out these works. For example, experts do not recommend starting repair work in the cold season. This is due to the fact that, on the one hand, at this time the soil becomes frozen, hard, and on the other hand, cement, like any mortar, loses some of its properties.

Foundation repair is a technically complex construction task. If we are talking about improving the condition of the foundation located under a wooden house, then this task is simplified, because a wooden structure can be raised using jacks. This allows for a complete reconstruction of the existing base or completely replace it, if necessary.

If you need to repair the foundation of a brick house, everything is much more complicated, since such a structure cannot be lifted and then installed back.

If cracks appear due to subsidence of the soil, then they are not dangerous. In this case, the foundation of the house settles on a more stable piece of soil.

There are many reasons for the destruction of the base under the brick house, including:

incorrect load calculation;
destruction of the blind area;
soil subsidence;
groundwater impact;
mechanical damage, etc.

The most common causes are soil subsidence and groundwater impact. Damage to the base of a brick house often leads to the formation of cracks. In fact, cracks are not always a sign of a serious problem. For example, cracks that appear due to subsidence of the soil are considered non-hazardous. In this case, the foundation of the house settles on a more stable layer of soil. Subsequently, there will be no subsidence of repeated movements, which means that cosmetic repairs are enough to protect the reinforcement that has opened due to concrete cracking. In order to determine the degree of danger of cracks, it is necessary to find out whether they increase in size. It is necessary to glue a piece of paper with the date on the edges of the crack. If the paper beacon breaks due to an increase in the crack, then it is necessary to take emergency measures to save the house.

An increase in cracks in size may indicate the activation of the process of subsidence and destruction of the foundation. In this case, only emergency measures can save the walls of the house from collapse. If the paper beacon remains in place for a long time and does not tear, then there are no reasons for emergency repairs, since the integrity of the beacon indicates the cessation of ground movements and displacement of the house.

The main difficulty of repair work to restore the foundation of a brick house lies precisely in the impossibility of raising the house, since there is no full access to the foundation. As a rule, repair work consists in strengthening the base, its complete reconstruction and replacement of damaged parts. If there is severe damage to the base of the house, reinforcement is necessary not only from the outside, but also from the inside. Thus, for repair work, it is necessary to dismantle the floor of the house, which is possible only if the floor of the first floor is not made of concrete slabs. If the floor of the first floor is made of concrete blocks, then repairs are possible only from the outside of the house.

Cosmetic repair of the foundation

If the paper beacon ruptures, then the crack increases and action must be taken.

Often the destruction of the foundation occurs due to long-term operation. The foundation of brick houses that have stood for decades is gradually being destroyed due to natural processes. As a rule, in this case, small cracks appear on the walls, and the plaster on the foundation crumbles. In this case, the restoration of the damaged top layer is carried out.

To carry out the work you will need the following materials and tools:

metal grid;
rebar pins;
cement mortar;
mesh anchors;
perforator.
shovel;
putty knife.

A trench must be dug to gain access to the foundation. The depth of the trench must be at least 50 cm.

In order to qualitatively restore the old foundation under a brick house, it is necessary first of all to dig a trench around the house. This will allow access to the foundation hidden under the soil layer. The depth of the trench should be at least 50 cm. The trench near the foundation must be dug very carefully to prevent its collapse. Next, you should clean the walls of the foundation from crumbling plaster, using a spatula for this. After removing all the dirt and unsteady elements, you can proceed to the direct repair of the base. Using a perforator, it is necessary to make holes along the lower and upper edges of the foundation and insert reinforcing pins prepared in advance into them. A metal mesh is attached to the cleaned sidewalls of the foundation, which will serve not only as the basis for the cement layer, but will also become the fastening element of the entire structure. Prepared sidewalls must be covered with a 5 cm layer of cement. The foundation must be processed around the perimeter. After the cement has completely dried, an additional layer of waterproofing is applied.

It is worth saying that such a cosmetic repair is an ideal solution only if the foundation has minor damage caused by a long service life. Such foundation repair should be carried out every 5-10 years for preventive purposes, as with more serious damage it can be very costly and time consuming. In the event that the foundation of the house has been damaged due to severe subsidence of the soil, a more thorough approach is needed to increase the bearing capacity of the structure.

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List of works on complex strengthening of the foundation

Brick houses, as a rule, are built on strip foundations, which are quite resistant to soil movements, which largely determines the specifics of repair work. Strengthening the structure of the base of the house is a whole range of works aimed at increasing the stability of the house. The process of restoring the foundation of the house can formally be divided into several stages:

preparatory;
reinforcement due to additional reinforced concrete structure along the perimeter of the old foundation;
blind area filling.

In addition, additional works on reconstruction include waterproofing and drainage. In cases where it is a question of the collapse of a part of the foundation and it is possible to gain access to the inner sidewall of the base structure of the house, it is recommended to build an internal reinforced concrete structure. Thus, you get a kind of sandwich with the old foundation inside.

It is worth noting that, first of all, it is necessary to correctly assess the extent of the destruction of the foundation. For example, if cracks are observed on two opposite walls, this may mean that the foundation, and hence the whole house, is gradually spreading in different directions. In this case, it is necessary to strengthen the structure around the entire perimeter.

The most important stages in the implementation are waterproofing and drainage. After the construction of an additional part of the base, it is necessary to use waterproofing materials, as well as to make drainage. This will significantly reduce the risk of re-damage due to soil movement due to heaving in winter.

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Preparation for pouring an additional section of concrete base

Rice. Strip foundation options.

The preparatory stage of work on restoring the strength of the foundation is considered the most time-consuming. First of all, a pit is dug along the perimeter of the foundation, the depth of which should be at least 70 cm. The width of the trench should be at least 50 cm. In this case, the bottom of the trench should be slightly above the concrete base of the foundation. In no case should the sole be touched, as this can weaken the foundation and lead to the collapse of the walls of the house during work.

The surface of the sides of the plinth and foundation should be thoroughly cleaned of adhering dirt, waterproofing residues and destroyed concrete. In order to add rigidity to the existing concrete and make it a monolithic formation, it is necessary to form an additional reinforcing mesh. In this case, there may be several options. If the foundation is strengthened only from the outside, then 50 cm holes are made in the upper and lower parts, into which reinforcing pins are inserted. The length of the reinforcement pins should be approximately 70 cm. The distance between the reinforcement pins should be no more than 50 cm.

Table of the main causes and methods for eliminating foundation defects.

Reinforcement is attached to these pins, which will form part of the grid running parallel to the existing foundation. Reinforcing pins threaded through the old foundation should be immediately fixed with cement mortar. All elements of the reinforcing mesh are attached to each other using a special knitting wire.

The second option for the formation of a reinforcing mesh is used if the foundation is to be refilled both from the inside and from the outside. In this case, the holes for the pins are made through. The size of the pins passing through the foundation must be at least 90 cm. The part of the reinforcing mesh, which will be located parallel to the existing foundation, must be fixed with wire. Thus, it turns out that the reinforcing mesh will be a solid structure passing through the old foundation.

No matter how solid the structure is, due to the influence of pressure and precipitation on it, over time, the foundation collapses or settles. However, each owner of a private house can independently repair or reconstruct the foundation.

Features of foundation repair depending on the problem

The service life of the base of the house directly depends on the quality of its installation and the materials that were used for this.

Foundation survey

When a crack appears, it is necessary to determine whether it is increasing. For this, so-called markers are installed. In order to check whether the crack is progressing, it is necessary to stick paper tape across it and leave it for 10 days. If the tape remains intact, then the crack can be filled with fragments of bricks, and then concreted. If it became clear that the development of the crack is progressing, then it is necessary to come to grips with the repair of the foundation or its replacement in the case when reconstruction is impossible.

As a beacon, you can use both a gypsum mortar and a ready-made mixture for plaster. The composition should not be plastic after hardening, it should be as fragile as possible and subject to mechanical damage. After preparing the mixture, it must be applied to the crack with a layer of 3–5 mm, 100–120 mm long. You need to apply across the crack, and in such a way that it is approximately in the middle of the marker.

For greater accuracy of the result, there should be at least two markers on the foundation crack.

There is another way to examine the foundation. Although it is more time-consuming, but more informative. The method is to prepare the pits. A pit is a hole, the depth of which coincides with the height of the foundation. The length of each pit (there must be at least two of them) is 100 cm. The width is selected strictly individually. After the pit is dug out, it is recommended to strengthen its walls with unedged boards. This measure is necessary to prevent the collapse of the earth.

The size of the pit depends on the height of the foundation and the size of the person who will carry out the work.

It is recommended to make holes only in problem areas. This will allow access to the foundation walls and determine the quality of the installation, the materials used, and also provide information on the depth of the groundwater (they can be checked for acidity or alkalinity).

This method allows you to start repair work almost immediately.

Possible causes of destruction

At the moment, there are three main reasons that provoke the destruction of the foundation of varying degrees:

human activity;
shortcomings in the process of work, careless attitude to installation, violation of technology, use of cheap low-quality materials;
the influence of external natural factors (rain, frequent temperature changes, groundwater rise).

Most often, it is water that becomes the main cause of the collapse of the foundation of the house. Groundwater or tap water can enter the soil under the building, while in winter they freeze, increase in volume, and in the warm period cause the destruction of the foundation of the house.

The reason for the destruction of the foundation may be groundwater or a change in load

Similar processes occur during seasonal heaving of the soil. It also happens that the foundation as a result of this rises by more than 10 cm. However, the most serious problem for the foundation of any house is subsidence.

Signs of destruction

Each owner of the house can independently determine that the foundation of his house begins to collapse. Cracks or depressions appear. But remember that not every crack that appears when the foundation shrinks is a sign of destruction. Sometimes only cosmetic repairs are enough to solve the problem.

Signs of destruction can be obvious and hidden. Among the main ones are:

thin cracks that can appear not only on the plinth, but also on the walls;
violations of the external or internal decoration in the area of destruction;
visible deformations of the flooring, possible failures;
collapse of the building, which at the first stage of the destruction of the foundation can be only partial;
deformation of individual sections of the foundation;
soil failures next to the damaged foundation.

To identify hidden signs of destruction, it is necessary to conduct a special survey, for which it is better to invite specialists with equipment.

DIY repair: step by step instructions

The reconstruction process depends on the cause of the problem as well as the nature of the problem itself.

Cracked foundation

In order to choose the best option for strengthening a cracked foundation, it is recommended to determine the nature of the destruction.

If a crack appears along the entire perimeter of the base and its cause is increased soil moisture or a change in the external load, the repair process should proceed as follows:

Dig a trench around the house along all the walls.
Clean the surface of the foundation from old plaster, dirt.
Install a metal grate at some distance from the foundation. To do this, it is recommended to use metal anchors, which must be driven into the plinth and base.
Concrete this structure, carefully tamping the solution.

If the foundation was made of rubble, monolithic concrete, soil concrete, then reinforced concrete reinforced clip is used for reinforcement. Its anchors must be connected to the old base. This will reduce the load a little.

A problematic crack is one that grows in size.

If weak areas are found, the bearing capacity of the base must be increased. This can be done by laying a new foundation along the old foundation and connecting them with anchors.

sunk foundation

This problem usually occurs in owners of brick houses with a similar foundation. It is recommended that a crack progression survey be carried out before any repairs are carried out. If the result is positive, then the repair is carried out as follows:

Similarly, it is possible to repair a monolithic foundation. True, this will require more effort.

Foundation problems after winter

After thawing, especially if the winter was snowy, cracks and other deformations may appear. In this case, it is necessary to conduct a thorough study of the foundation, to determine whether the cracks are superficial or deep, which caused such destruction. In most cases, a drainage system will be required. It can be drainage pipes, storm drains, wells.

After winter, the foundation may collapse if it is saturated with moisture and freezes in autumn.

You can independently perform a blind area device. In particular, it is necessary to expand it, provide a larger angle of inclination, while using a heat-insulating material, ideally extruded polystyrene foam. Remember that the ingress of moisture on the blind area is detrimental to the foundation itself, as it leads to its moistening. Therefore, it is recommended to ensure that all moisture is discharged into the storm sewer.

If there are problems with the foundation after the winter, you can use the shotcrete method to strengthen the foundation:

Foundation deformed

It may happen that the foundation is deformed or bursts. You can fix this situation yourself:

Reinforcement can also be used for reconstruction

There are two ways to reconstruct the foundation if it has begun to crumble. The first is associated with a complete replacement of the base. However, they do it in parts, and special attention is paid to the corners and areas under the windows, because these are the weakest sections of the foundation. Ideal for this type of reconstruction is the so-called method of gradual casting from reinforced concrete. In this case, reinforcement binding is mandatory.

The second method of reconstruction is the use of clips. In advance, you need to take care of the availability of the following materials:

primer;
anchors;
fittings;
clips;
cement-sand mortar (you can take ready-made or prepare it yourself).

If the foundation is crumbling, it may need to be completely replaced.

The principle of this method is to strengthen the base of the house by using concrete or reinforced concrete clips in order to protect against further destruction. In this case, everything must be done as carefully as possible, since such a design is quite fragile. This method is especially relevant for the reconstruction of the foundation of a brick house. When performing work, the following instructions must be observed:

Don't forget about waterproofing. Otherwise, the building may be destroyed again.

House foundation repair

The issue of reconstructing the foundation of a private house is especially relevant, since this design is much more solid than outbuildings, which means that it is necessary to approach the issue of repair more responsibly.

Foundation replacement

The replacement of the base is carried out when its bearing capacity has decreased. Also, such an extreme measure is used when it is necessary to increase the life of the structure.

Hydraulic jacks are usually used to replace the foundation. The preparatory stage consists in the selection of the necessary tools and materials:

jacks (they can be rented);
steel scrap;
wedges;
sledgehammers;
chocks or bricks as supports;
5 cm thick steel plate as the base for the jack.

The replacement process itself consists of several stages:

You can only raise the house at a time by 2 cm

How to level the foundation

The columnar foundation has one common problem - the pillars begin to squint. This happens, as a rule, due to excessive heaving of the soil or a violation of the installation technology. The main method of repair is the replacement of old supports with new ones. It will not be possible to return the old supports to their previous state.

The main problem of the columnar foundation - the pillars begin to squint

The repair process goes like this:

Video: repair of a columnar foundation

Brick foundation repair

Before proceeding directly to the repair, it is necessary to clean the foundation from the plaster. This will allow you to assess the severity of the damage, as well as the possibility of reconstruction with your own hands. If the damage is quite serious, then:

It is necessary to dig a trench, and then fix the metal mesh with anchors.
Next, mount the formwork and pour the concrete solution. The formwork can only be removed when the concrete has hardened thoroughly.
After that, the trench can be filled up, tamping the ground well.

If the damage to the brick base is minor, then the repair consists in replacing the damaged areas and restoring the blind area. At the same time, it is necessary to carefully ensure that the old and new sections of the foundation are connected.

Additionally, it may be necessary to install a reinforced concrete clip, which, in turn, is attached to the support with through anchors.

Video: repairing the foundation of a brick house

Screw foundation repair

As such, the repair of the screw base is not carried out. If there are any problems with it, the piles are replaced. They do it according to a certain plan:

How to strengthen the foundation

There are several ways to strengthen the foundation. The most popular is the laying of a new foundation along the old one. You can do this work yourself:

Repair of the foundation of a wooden house

There are some features of repairing the foundation of a wooden house (or bath). It is this part of the building that is the most vulnerable. The whole process takes place in several stages:

During repair work, safety measures must be observed. First of all, it is strictly forbidden to climb under a raised structure, no matter how strongly you are convinced of the reliability of the jacks. It is also not recommended to leave the structure to stand only on jacks, it is better to install additional supports.

Video: how to replace a crumbling foundation under a wooden house

Foundation. Cracks can appear due to several reasons. Let's take a closer look at them and how to repair the foundation of a private house.

Conventionally, they can be divided into two: the deterioration of the bearing capacity and the deterioration of the bearing capacity of the foundation itself.

In the first case, this may occur due to flooding. When saturated with water, some soils lose their bearing capacity. Also, when flooding, soil erosion can occur. This happens in areas where soils consist of sandy and sandy loam layers.

At least two pits are dug in the most problematic places. The method of digging pits is the most informative. Using this method, you can determine the depth of laying, the presence and condition of waterproofing, the material from which the foundation is made, as well as the presence of groundwater.

If there is the presence of groundwater, then you can determine what properties they have. To do this, use ordinary litmus papers, which can be purchased at garden stores.

After determining the research and determining the causes of the destruction of the foundation, they begin to repair the foundation with their own hands.

The cause of the deformation can be eliminated, and the destruction is not significant, and only cosmetic repairs may be required.

Also, sometimes the deformation of the foundation is so serious that it will not be possible to repair it with your own hands. Or it will be necessary to repair the foundation, the price of which will be comparable to new construction.

How to eliminate the causes of deformation of the foundation?

Deformations caused by flooding.

To eliminate freezing, it is necessary to insulate the foundation. Warming is carried out to the bottom of the foundation sole. To do this, they dig a trench around the perimeter of the house, then produce, insulate the side wall of the foundation and fill it with screenings or small gravel. A layer of insulation is laid on top of the backfill and poured.

In case of significant destruction of the foundation, when the destructive factors are eliminated, the foundation is also repaired.

Foundation repair

One of the most popular methods is the laying of foundations. The essence of the method is to deepen and increase the area of \u200b\u200bsupport of the sole. It can be implemented in two ways: with partial replacement of masonry and complete replacement.

The eyeliner is carried out with the help of grips in separate sections one and a half to two meters long, which depends on the depth of the foundation. With deep laying, the grips are reinforced with racks and beams.

Removed after concreting. Metal fasteners are left in concrete.

This method is advised to apply with a large volume of reinforced structures, a small depth of foundation, deep groundwater.

It is important to follow the technology of work to prevent the resumption of destruction of the foundation.

Foundation repair with clips

Clips are lateral attachments of concrete blocks connected to the old masonry.

Wide clips are not reliable and durable, also difficulties arise during anchoring, the impossibility of transverse through reinforcement leads to the conclusion that their use is rational.

The most preferred are two-branch clips that do not experience torque.

Application of the method of broadening the base of the "reinforced concrete jacket"

This method allows not only to strengthen the foundation, but also part of the wall.

To strengthen the method of broadening, the foundation is marked out on grips. The length of the marks is 2-3 meters.