Repair of the foundation of an old wooden house - the foundation of the dwelling will again be reliable! How to repair the foundation of a wooden house: the necessary knowledge

The foundation under any structure is subject to heavy loads, so it gradually begins to collapse. If you do not start its restoration in a timely manner, the structure may squint or even collapse. Foundation repair if desired. country house can be done by hand.

When to Repair a Foundation

In order for the house to be used for a long time, it is necessary to monitor the condition of its foundation. During the inspection, you should look for signs of destruction, such as:

  • distortions of doorways and window frames;
  • flooding of the basement under the building;
  • the appearance of cracks in the bearing walls;
  • foundation defects.

In some cases, the listed problems may appear as a result of base displacement. To understand whether the base is collapsing, it is necessary to fix paper patches on the cracks. They will determine the condition of the foundation. If within two weeks they break, this will indicate that the cracks are expanding. In this case, you should think about repairing the foundation. If the patches on the cracks remain intact, you do not need to make an urgent repair of the strip foundation of the country house with your own hands.

It is worth remembering that you can avoid these problems if you create a house without a foundation. But such structures can only be erected under certain conditions (for example, on solid ground).

Causes of destruction

The base usually collapses for several reasons:

  1. Mistakes in calculations made at the design stage of the building.
  2. Insufficient bookmark depth. If the base is not deep enough, winter time soil heaving occurs, which contributes to uneven raising of the foundation. Because of this, cracks appear in the material.
  3. The quality of the soil does not match the type of foundation. Before choosing the type of construction, it is imperative to carry out geological exploration on the site, since the reliability of the future structure depends on this.
  4. Violation of construction technology. An example is the installation of a smaller number of metal rods during the pouring of a strip foundation. Failure to comply with the rules can lead to the fact that the destruction of the base will begin within a few months after construction.
  5. The use of materials that did not meet the requirements for them.
  6. Change in the volume of groundwater under the building.
  7. Dangerous natural phenomena.
  8. Exceeding the allowable load on the base. An example is the creation of a second floor or the installation of additional appliances in the house, which significantly increase its weight.
  9. Ground movement in the area where the structure is installed.
  10. aging of materials. Often the foundation begins to collapse due to the fact that the building has been in operation for several decades.

It should be remembered that if signs of destruction of the base are found, it is necessary to immediately begin repairs. If this is not done immediately, the foundation may collapse. It is worth remembering that if the foundation is only partially destroyed, it is not necessary to raise the entire house.

Types of foundation repairs

Depending on how badly the foundation of the house is damaged, repairs can be divided into several types:


It is often possible to visually determine what type of repair is required for a particular foundation. Sometimes you have to create new foundation for a country house. But this is only possible if the structure is wooden and can be fully raised.

How to determine the type of repair

Often during the acquisition of a plot with a finished house, you can notice that the building is ugly. But this does not mean that its foundation will have to be repaired. Often appearance does not reflect the actual state of the foundation. Only after a thorough inspection of the structure can it be determined whether repairs are needed or not. In some cases, all work can be done without the involvement of specialists.

Before determining the condition of the house, you need to go down to the basement and see if it is filled with water. Often this is what causes the rapid destruction of the base. You should also pay attention to the distortions of doorways and window frames. In some cases, the distortion of the walls of the building is noticeable.

If there are cracks on the base, it is worth determining their depth and putting patches to understand the rate of destruction of the foundation, if this process is already taking place. In many situations, cracks are a sign of the destruction of the outer layer of the foundation.

Instructions for restoring the strip foundation

Reconstruction of the foundation of the country house wooden house can be done by hand even without the use of heavy equipment. To improve the condition of the strip foundation, you must perform the following steps:

  1. Along the base of the house, you need to dig a trench, the depth of which should be approximately 50 cm.
  2. After that, it is necessary to clean the freed part of the foundation from earth and other contaminants.
  3. Then you need to treat the surface with a special primer, which will increase adhesion.
  4. At the next stage, it is necessary to install anchors in pre-created holes throughout the damaged area of ​​\u200b\u200bthe base. The distance between these elements should be from 60 to 120 cm.
  5. After that, it is necessary to weld the reinforcing mesh to the anchors.
  6. Further, it is necessary to pour concrete mortar into the cracks formed as a result of destruction.
  7. A wooden formwork must be installed around the entire perimeter of the trench. It is also important to create a sand cushion before pouring the concrete solution.
  8. After the concrete has completely hardened, it is necessary to fill it with soil and create a blind area. This will protect the foundation from moisture.

It is worth noting that in some cases it is better to install a new foundation for a country house. An example is a situation where the destruction of the foundation leads to the warping of the walls of the building.

Column Foundation Repair

Restoring a columnar foundation with your own hands can be quite simple. It happens like this:

  1. First, near the pillars, excavation takes place.
  2. After that, the base elements are cleaned of dirt, falling off plaster and crumbled stones. If this is not done, the repair of the foundation will be ineffective.
  3. Then the pillars are coated with a primer. This is necessary to increase surface adhesion.
  4. At the next stage, holes are created in the pillars. It is necessary to securely fix the anchors in them, which will be used as the basis for the reinforced frame.
  5. After that, the metal frame is welded to the anchors.
  6. Then the concrete mortar is poured. After pouring, it is worth using a construction vibrator to get rid of voids and make the foundation more reliable.
  7. The restored foundation surface must be covered waterproofing material.
  8. The recesses remaining after the work are covered with earth and tightly compacted.

No matter how good your house was, time spares nothing, cracks appear one after another and restoration work has to begin. Foundation repair brick house do it yourself 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 on site high level groundwater, they will fill the hole.

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 may collapse if its base lies in the zone of soil freezing. Moreover, special damage will be inflicted heaving soils. 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 - the most complex view work during restoration. Make it small areas so as not to cause damage. 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.


ABOUT country house many dream. After all, this is a place where you can relax after a hard working week, relax and enjoy the natural silence. But it becomes more and more difficult to buy a good country house every year, and such a capital building costs a lot. So they buy many country houses "with errors", which are simply necessary to eliminate. As a rule, this is the wear of the base of the house - the foundation.

Types of foundation repair work

Repair work of the foundation is related to the degree of damage to the base. Experts distinguish:

  • cosmetic work. This is a relatively easy type of work and it is associated with decorating the appearance of the basement. Cosmetic repairs do not require special costs;
  • moderate repair. This type of repair involves the replacement of some structural elements without lifting the building;
  • complex repair. This type of work includes the performance of all types of work required for a worn foundation.

Determining the type of repair

Very often, the acquired house has a unkempt appearance. But this does not mean that the building needs major repairs and replacement of elements. Very often, its structural characteristics remain on top. But it happens quite the opposite: the house plays with fresh paint, the site attracts with its well-groomed. But if you look deeper, the building needs urgent overhaul.

In order to determine how damaged the foundation is and what kind of repair it needs, it is necessary to pay attention to the “little things” that indicate the wear of the base:

  • skewed door or window openings. This may be evidence of subsidence of the foundation or the slope of the walls to the side;
  • basement flooding;
  • cracks on the walls. They can indicate different phenomena. Perhaps the cracks appeared as a result of the aging of the facing material and a light repair will eliminate this trouble. But a large presence of deep cracks may indicate a global destruction of the base. You can check the degree of destruction of the foundation in a simple way: so-called beacons are superimposed on several cracks in different places. It can be ordinary paper strips with the date stamped. Cracks are sealed with these strips and left for a certain period. If they remain unchanged, then this indicates that the cracks are not significant and the foundation needs cosmetic repairs. But in the case when paper beacons are torn, the base needs increased attention. Broken beacons indicate significant destructive processes that do not stop;
  • destruction that can be seen visually.

You should carry out your repairs only after establishing the cause and nature of the damage. But very often it is possible to determine the complexity of destruction only after the “discovery” of the base.

Reasons causing destructive processes in the foundation of a country house

There are many reasons that lead to destructive processes, but the main ones are:

  • mistakes made in the design work;
  • laying the foundation does not match the ground;
  • too shallow filling of the base;
  • erection of the foundation from low-quality or unsuitable building materials;
  • changes in the climatic characteristics of the area, changes in the level of groundwater.

It is necessary to establish the cause that led to the destruction. Since knowing it, you can determine the direction of the work. For example, when groundwater rises cosmetic repairs will not be enough, more thorough repairs will be required.

Features of redecorating the foundation of a country house

Cosmetic repair of the foundation of a country house is the simplest option for improving the foundation. Cosmetic repair of the strip foundation of a country house consists in the performance of facing works aimed at eliminating external visual imperfections. The process of restoring the base is very simple:

  1. Cleaning the base from old plaster or other type of facing material.
  2. Treatment of the foundation with special means that will strengthen it and eliminate fungus and mold.
  3. Installation of a metal frame, which will allow you to fix the plaster more firmly and significantly extend its operational period. It is recommended to use a mesh as a frame.
  4. Execution of facing works.

Simple actions will restore the foundation to a beautiful appearance and strengthen it.

Overhaul of the base of the country house

Capital works include more complex restoration works with partial replacement elements. The overhaul is aimed at strengthening the base and further protection from the destruction process.
Repair process:

  1. Dig holes to the base at a 35 degree angle.
  2. Lay down asbestos pipes with a diameter greater than 20 cm.
  3. Fill pipes with concrete. The solution should fill the entire trench.
  4. Allow time for the concrete mixture to dry completely.
  5. Sprinkle gravel mixture.

This type of reinforcement is used to restore the base and belongs to the average type of repair.

Features of the repair of the tape base

To restore the strip foundation, it is necessary to dig a trench more than 50 cm deep around the perimeter of the house. The pit should open access to the outside of the base. After that, it is necessary to clean the surface of delaminations, remove dirt and plaster. Treat the surface with a special primer that will strengthen the base. Make holes for arranging anchors and install them with a horizontal step of up to 120 cm. Weld a reinforcing mesh to the prepared anchors. Pour mortar into cracks and crevices. In case of severe destruction, it is recommended to install the formwork and supplement the base with a new mortar. After the foundation has completely dried, protect it with a special waterproofing material. Fill the trench and tamp the soil.

Column Foundation Repair

Repair column foundation country house is done a little differently with your own hands. Work process:

  1. Soil is removed near the foundation pillars.
  2. Dirt, plaster, delaminations are removed on the skeletons.
  3. The columns are treated with a special primer.
  4. Anchors are mounted in each column.
  5. A reinforced frame is installed and fixed with anchor bolts.
  6. The pre-prepared solution is poured.
  7. After drying, the waterproofing material is covered.
  8. The holes are filled with soil.

In case of particularly serious damage, it may be necessary to replace structural elements. To perform such work, it is necessary to undermine the base on both sides of the house, lay reinforcement on it. Install the formwork at the bottom of the pillars and pour it with a strong concrete solution, creating a kind of pillow-column.
Next is the digging. For wooden houses, a trench with a depth of more than 50 cm is required, and for brick houses - more than 90 cm. In the case when the foundation has many cracks, the repair area is reduced. Its length should not exceed a third from crack to crack.
The complexity of repairing the base depends on the nature of the destruction. Cosmetic repairs can be easily done on your own in a short time. For more serious restoration work, it will take time and additional funds. But they will help strengthen the foundation and save the house.


Sooner or later, all owners of country houses will have to face the need to repair the foundation - from ordinary cosmetic to capital.

How long the foundation will last without repair depends primarily on whether it was made with high quality, but even the most durable foundation begins to deteriorate over time. And since it is the foundation of the house, it is necessary to take on its repair immediately, otherwise the risk of collapse is more than real.

The most common cause of the destruction of the foundation of the house is its subsidence as a result of flooding or undermining the soil. Oversaturation of the soil with liquid leads to the fact that voids form under the foundation, after which it settles in accordance with the laws of physics. Less commonly, this occurs due to changes in groundwater levels or climate. A special case concerns the winter time: the freezing of water in the soil leads to the expulsion of the foundation up.

The option of overturning the foundation is not excluded. Although not often occurring in life, it is quite dangerous. It is much worse when microcracks appear in the base, over the years growing into large splits both in the foundation itself and in the walls.

Primary Activities

It is necessary to start repairing the foundation with an assessment of the scope of work. A superficial examination will not give anything - the appearance of the foundation can be depressing, but it is enough just to put it in order. The reverse situation may also occur, which consists in the fact that outwardly everything will be fine, but the bearing properties of the foundation will significantly decrease. In some cases, it is necessary to dismantle the internal floors of the house or dig along the foundation, followed by concreting.

You will almost certainly find cracks on a foundation that has not been repaired for a long time. Whether they are dangerous for construction or not, it is easy to determine with ordinary paper strips (the so-called “paper lighthouse”) glued across the cracks. If after a certain time the lighthouse remains unchanged, then only cosmetic repairs are required. If the lighthouse is torn, it is necessary to carry out complex repair work. The poor condition of the foundation can also be said, for example, by constant flooding of the basement of the house, or warping of door and window openings.


Paper and plaster beacons should be used to check foundation cracks.

Cosmetic repair of the foundation

In their further actions, one must proceed from the type of foundation of the house, the most common of which in the construction of private country houses are tape and columnar. Strip foundations are solid reinforced concrete strips with a certain width and depth. This type of foundation is most often used as the foundation of a stone house, although they can also be found in wooden houses (in this case, they are usually less deepened and are called tape shallow). The columnar foundation is the pillars installed in all corners, at the intersections of walls and in other places where a large load acts on the foundation. Since it is difficult for pillars to support the weight of a stone house, this type of foundation is usually used in the construction of wooden houses.

The easiest repair of the foundation of a house is the renewal of old plaster. This type of repair is not too expensive.


The injection method is one of the most modern, reliable and fastest ways to repair the foundation.

First you need to carefully dig a trench along the foundation, preventing collapse, and then clean it from the remnants of the old finishing material with a spatula. After that, you can start finishing. Holes are made along the lower and upper edges of the foundation with a perforator, into which reinforcing pins are inserted. A special metal mesh is attached to the sides of the foundation - it will serve as the basis for subsequent finishing layers. The sidewalls are then sealed with a layer of cement mortar a few centimeters long, and then the main part of the foundation is covered with a cement layer. When the cement dries, it is desirable to additionally treat it with a layer of waterproofing. After that, the base can be coated with a primer, which will give protection against the occurrence of fungus that appears as a result of prolonged exposure to moisture. In conditions of wet autumn, this is important. During cosmetic repairs of the columnar foundation under wooden houses it is necessary to cut out rotten wooden sections and replace them with new ones.


Clinker tiles are a material that is optimal in terms of laying complexity and price in comparison with artificial or natural stone and ordinary brick.

Due to these reasons, damage to the foundation may become of such a nature that ordinary cosmetic repairs will not be enough to reliably protect the house from collapse. Overhaul is a much more serious undertaking, for which additional working hands are desirable.

Major overhaul: strengthening the foundation

At overhaul foundation, the first step is to strengthen it. There are two main ways to strengthen - using pipes or pillows.

The first way: in places where the foundation is not in an emergency condition, digs are made at an angle to the very bottom of the pit. Pre-prepared pipes with a diameter of less than 20 cm are laid in the tunnels. After that, freshly prepared cement mortar is poured through the pipes. When the solution is completely dry, it is covered with a sand-gravel mixture.

The second method is best suited for column foundations and foundations of wooden houses. It consists in bringing a sand, concrete or crushed stone cushion under the foundation. Digging is done from each of the corners so that the base is completely freed from the soil. Next, a pillow is laid out from the selected material, reinforcement and formwork are installed on top, and then the resulting structure is poured with mortar.

Overhaul of the strip foundation

The strip foundation, as already mentioned, is, in fact, a solid concrete strip passing under all the load-bearing walls of a brick house. After the strengthening, it is necessary to free one of the sides of the foundation from the ground (it is recommended to start work from the strongest sides, so that in the process of working on the “weak” sides, the already embedded parts of the foundation balance them, preventing them from sinking even deeper), while not touching the pillow originally laid down .

At a certain distance from the old base, formwork is installed, which will prevent the solution from spreading. After that, the anchors are screwed in, a metal mesh and reinforcement are fixed on them throughout the excavation, and then the resulting structure is poured with an even layer of mortar. Such a design, with the correct calculation, will ensure the reliability of the foundation for quite a long time.


When repairing the foundation of a wooden house and for lifting walls, you can use ordinary car jacks.


Overhaul of the columnar foundation

It is much easier to replace a columnar foundation under a wooden building. A popular method is to raise the entire house with one or more jacks, for the subsequent replacement of the lower rims of the log house. If this is not possible, the crowns are replaced using an excavation or using a more complex method - dismantling the walls.

So, consider the method of raising the house with jacks. Lifting mechanisms installed on two opposite sides of the house at least half a meter from the corners. Pay Special attention on the location of the jacks - it must be uniform, otherwise the lower logs of the log house may not withstand. In addition, there should be spacers between the jack and the log. As a rule, trimmings of a wooden bar act as gaskets. Before lifting, the jacks must be fixed on level ground, sometimes they are deepened into the ground to give the greatest stability. When the house is raised, it is necessary to arrange temporary supports under it - large square logs. Having previously taken out the rotten fragments, the house is lowered onto the trimmings of the beams laid out on these logs. After that, the old poles can be dug up or pulled out of the ground by swinging. Those of them that have been preserved in proper condition can be used to build a new foundation for the house.

After removing the old pillars, you need to deepen the pits under them by about 30-40 cm. Then fill up and compact the sand layer up to 15 cm, install a pipe in the sand, which will become the basis for the new pillar, and a solution is poured as the sole of this pillar. When the mortar sets, a metal frame is installed in the inner space of the pipe, after which it is completely filled with mortar. Do not forget that the pole must be installed in a strictly vertical position. When lowering the house on new pillars, be sure to check the even position of the logs, if necessary, use spacers made of wood, metal, or trim the lower crown of the log house.


To prevent undermining the foundation of the house groundwater it is necessary to arrange a good drainage system.


Foundation flood prevention

As already mentioned, most of the problems with the foundation are the result of the impact of water on the soil. In this regard, it is necessary to pay great attention to the issues of water disposal. Most often, external factors have a harmful effect. Therefore, it is important to arrange at least the simplest storm sewer and install gutters that maximally drain water from the roof from the blind area.

Decorative finishing of the foundation

Nowadays, due to the spread of a large number of various kinds finishing materials decorative nature gained popularity decorative trim external parts of the strip foundation. It not only looks aesthetically beautiful, but also performs an important function in reducing humidity inside the house.

The easiest way is to finish the foundation with plaster. The work is carried out in accordance with the standard technology of decorative wall plastering.

The method of applying decorative plaster differs from ordinary plastering and consists in spraying using a decorative trowel or a special sprayer. First, a cement layer is applied to the wall, and then decorative plaster is sprayed on top.

Another popular option is to finish the base with natural or artificial stone. This option looks solid and, as a rule, provides a longer finish life, but it also has its drawbacks: it is more expensive and laborious. Especially it concerns natural stone. It is not enough to buy a natural stone - you need to make special frames for it, consisting of a reinforced lattice, pegs and hooks. A stone is inserted into the frame section, which in turn is fixed with hooks and pegs.

Artificial stone is much cheaper than natural stone, and it weighs much less while maintaining an almost original look of natural stone. Facing with artificial stone according to the laying method is as close as possible to the laying of ordinary tiles, since it is carried out using adhesive solutions without additional reinforcements in the form of frames.

IMPORTANT
Strengthening the foundation by injection is an innovative method of repairing building foundations. Its essence lies in the fact that in the foundation of the structure, at a certain angle, holes 016-20 cm are punched down to solid layers of soil. Then the wells are filled with a hardening solution.

You can determine whether the foundation needs repair by throwing just one look at it. The fact that the days of the foundation of the house are already numbered is indicated by the warping of the building, cracks in the walls and subsidence of the house. It is impossible to insure the building against such deformations, because over time the foundation materials are destroyed. Therefore, one day the hour comes when the owners of a wooden house have to decide what kind of repairs to make - partial or complete.

Conditions for partial and major repairs

In order to find out the degree of damage to the foundation and determine the necessary measures to restore it, you need to carefully study the current state of the foundation and identify characteristic defects that may affect the strength and integrity of the building or its individual elements.

If cracks appear on the foundation, then you need to think about the need to repair it.

The foundation is restored fragmentarily if it has sunk lower, but has not begun to collapse. A full repair is resorted to when cracks and other damage are detected.

The decision on what basis to replace a completely damaged structure is made, taking into account the type of soil, the terrain and the type of foundation originally created.

If the foundation of the house has gone into the ground, it's time to repair it.

With a strip base, they often do the following: the destroyed zones are dismantled and the structure around the entire perimeter is reinforced. In case of serious destruction of the foundation tape, it is decided to completely replace it.

For serious defects strip base at home it makes sense to think about its complete replacement

The repair of the column base is almost always carried out completely: all the old supports of the building are replaced with new ones. To do this, the house is raised to the height of the pillars with the help of jacks. New reliable supports are fixed on reinforced concrete "pillows".

The columnar foundation is most often completely replaced with a new one.

The foundation of wood, which has already managed to spoil the fungus a little, is usually replaced with a tape or columnar structure. To do this, the building is raised to a certain level and substituted under it. concrete blocks or bricks.

Strengthening the foundation of a wooden house

When repairing the foundation, it makes sense to immediately strengthen it. You can do this if you are confident in the stability of the soil, which is below the level of laying the foundation of your house. Strengthening the structure under the building may also be required when it is planned to make another floor in the house, but there is a suspicion that the previously installed base will not withstand the increased load.

There are two ways to strengthen the foundation, depending on the load that it has to withstand.

Instructions for strengthening the tape structure

To make the foundation stronger, perform the following work:

  1. A trench is dug around the perimeter of the base. The pit must be wide, otherwise it will be inconvenient to work. In addition, we must take into account that the new foundation will become more powerful.
  2. The soil is cleared from the excavated foundation. To do this, use a metal brush.

    The trench must be wide enough to be comfortable to work in.

  3. Holes are made in the old base with a drill. It is important that their diameter exceeds the thickness of the purchased reinforcing bars by no more than 1 mm. In this case, the metal elements will be installed securely and without gaps.
  4. Reinforcement bars are inserted into the drilled holes with a hammer. They will help to connect the new foundation with the old one.

    Reinforcing bars are hammered into the drilled holes, to which a vertical grate is attached.

  5. Next metal elements are welded to the clogged rods, forming a reinforced belt. It is better to solder the fittings with the rods already installed in only a few places. For the most part, it makes more sense to tie metal elements with wire to avoid deformation of the reinforcing chord during pouring and hardening of concrete.

    The reinforcing cage will firmly bind old foundation reinforced concrete structure

  6. Install the formwork and fill it with concrete. After waiting for the solution to harden, the structure of the boards is dismantled. For several days, the new foundation is not touched, so that it is even more strengthened.

    A formwork is installed around the reinforcing cage and concrete is poured into it. After hardening of the reinforcing layer, the formwork is removed.

  7. The created base is covered with a waterproofing material. An asphalt strip is created around the foundation at an angle.

Due to the reinforcement, the weight of the wooden building is distributed over a larger area. This method allows you to stop subsidence and destruction of the house.

Video: how to strengthen the strip foundation

Replacing the base under a timber building

The way to replace the base depends on its type.

Replacing the strip foundation

Overhaul of the base in the form of a tape is carried out in stages:

  1. In order to reduce pressure on the base, furniture is removed from the house, the floors are dismantled, and the stove is dismantled. Only heating equipment standing on a separate concrete platform is not subjected to dismantling.
  2. The building is slightly raised. If the house is small, then its level in relation to the ground is changed with the help of a kind of lever for lifting weights - a beam 8x8 cm in size, brought under the corner of the building. A log will serve as a support for him. For heavy construction, it is better to choose thicker lumber. The wooden structure is lifted, putting pressure on the beam.

    The house is raised on jacks and temporary supports are placed under it

  3. Around the house or only in areas where it is required to raise a wooden building, they dig a trench.
  4. A jack is placed under the old foundation. There may be several mechanisms for raising a building. The number of jacks is determined by their carrying capacity and the weight of the house. Mechanisms can only be installed in areas where there is no damage.
  5. With the help of a jack, the house is slowly raised to the desired level. It is important that it rises above the surface of the earth evenly. Since there is a risk of unsuccessful installation of the jack, it is advisable to play it safe - to get wooden wedges between the building and the base pad.

    The house rises evenly on several jacks. For insurance, wooden blocks are placed under the supporting beams

  6. The lower crown of the raised wooden structure is pulled together with a steel hoop or hammered with strong boards. This technique will protect the overloaded lower bars of the house from damage.
  7. The house to the very surface of the earth is freed from former foundation. If you are not ready to spend a lot on repairing the base, then you can partially disassemble the structure - remove only the destroyed areas.

    A hammer drill is used to destroy the old foundation.

  8. Under the reconstructed base of the house, a pillow is made of a sand-cement mixture. Supports made of concrete or bricks are placed at the corners of the building. Instead, you can use piles. Thanks to the installation of supports, the size of which must correspond to the height of the base being built, the base will be able to withstand increased pressure in the future.
  9. Construct a reinforcing belt, necessary to strengthen the base. Elements metal structure connected not by welding, but by wire.
  10. Formwork is made from boards. Finished building filled with concrete.

    The formwork with a reinforcing frame inside is reinforced with side supports and poured with concrete

  11. After 3 days, the concrete hardens, so the formwork is removed, but further work until they are carried out, waiting for the hardening of the foundation.
  12. A few days after the dismantling of the formwork, the new base is covered with a waterproofing sheet, for example, roofing material.

    A few days after the formwork has been removed, the foundation is covered with waterproofing material.

  13. The house is lowered, acting as slowly as during the raising of the building. The front side of the base is covered with waterproofing and facing materials. A blind area is made around the house, which will not allow rainwater to seep into the base.

Video: how to repair a tape concrete base

Repair of supporting pillars

To replace the columnar foundation, proceed as follows:


If it is necessary to replace only a few pillars, they act differently: in the area of ​​\u200b\u200btheir location, tunnels are made, pipes are immersed and poured with concrete. Old supports are dismantled after the mortar has hardened.

Video: do-it-yourself column foundation replacement

Converting a foundation from rubble or brick into a monolith

Since the brick foundation is characterized by increased fragility, it is more expedient to replace it with a concrete base.

To build a concrete foundation in place of a brick or rubble base, perform the following steps:


Video: brick foundation repair

Do-it-yourself wooden house foundation repair

The wooden foundation is mainly made of pine or larch. A wooden structure always requires a complete replacement, as over time it is completely covered with fungus and rots. The replacement of old elements of such a base with new ones is carried out as follows:


The damaged foundation of a dilapidated wooden house can be put in order. To do this, you need to obtain the necessary knowledge and choose the technology of repair or replacement. Reconstruction of the foundation of the house can be done with your own hands, if there is a desire and at least a little experience in the production of construction work.