How to apply waterproofing to foundation blocks. Waterproofing of FBS foundation blocks. Why use foundation waterproofing?

Every house must have a foundation. Without it, any structure will quickly settle and eventually crack and even collapse. In order for a building to last longer, it must be placed on a foundation. This will help in its long-term, groundwater will not cause damage, as they would do every autumn and spring season if there were no foundation. To maintain the longevity of the structure, it is better to use waterproofing.

Why use foundation waterproofing?

For those who are thinking for the first time about whether it is necessary to do waterproofing, we will answer right away - of course, it is necessary. After all we're talking about to protect the surface of the supporting structure. Almost always this is a basement wall or wall ground floors. One of the building materials that is used for protection is aerated concrete. Waterproofing of aerated concrete most often occurs on FSB blocks.

There are two types of waterproofing:

IN vertical type It takes a lot of work, but the result is worth it. They start from laying the foundation, to those places where rain or other water waste may leak. The entire foundation row is cleared of various types protrusion and chips. All seams are cleaned and sealed.

In the horizontal type, everything is much simpler. Waterproofing of aerated concrete blocks occurs through the application of layers consisting of roofing felt sheets, which are made of bitumen. They are folded step by step into balls. Such balls of roofing material act as a shield to prevent any moisture from penetrating to the surface of the foundation block.

It is necessary to waterproof surfaces in the middle of the structure and on the surface. All work must be done at the same temperature balance, preferably at least 5 degrees.

And in this case, there is a need to clean all the protrusions, remove dirt, chips, and also seal the seams, treat everything with cement. Sometimes they use the method of applying liquid glass to the surface, which makes it possible to maintain the durability of the structure a little longer. And although this method is labor-intensive and expensive, its results are worth it.

Variations with waterproofing work

One of the waterproofing layer options is applied to the foundation block:

Type of plaster layer: this composition contains a part of cement mortar with several layers, to which certain additives are added - ceresite, any version of liquid glass, sodium aluminate. The foundation wall is protected from any wet penetration of aerated concrete blocks. Apply several times and only when hot.

Type of adhesive layer: budget option. It is also not labor-intensive. Waterproof material made of polymer-bitumen composition. Protects against moisture, both capillary and filtration. One of the simplest ways to waterproof aerated concrete blocks. The components are heated on the burner.

Having received the hot state of the composition, it is applied to the external foundation. Sometimes, when waterproofing adhesive type, materials with a dark-skinned surface are used. Then there is no need to heat the material.

Materials with a darkening surface:

Ruberoid is used in the surface layers of the foundation roof. Waterproofing material is used around the perimeter. The waterproofing agent contains fiberglass material, which prevents the possibility of destruction due to the influence of fungi and rot.

Foundation waterproofing

One type of insulation is vertical insulation of foundation blocks. One of the most technologically difficult, but effective, injection waterproofing, increases the level of resistance to moisture foundation material. Waterproofing by injection consists of filling microcracks, seams, and holes with a special compound under pressure.

This method of performing work requires quite a lot of resources and rare, expensive equipment. But the high cost is covered by durability.

Waterproofing foundations consisting of FSB blocks consists of the following steps:

  • the seams of the blocks are embroidered to a depth of 50mm;
  • a drill is used to divide holes in increments of 20 cm, reaching 75% of the wall thickness;
  • parkers for injections are installed;
  • a special modified polymer is poured;
  • the procedure is performed with a pump for this type of work;
  • parkers are removed;
  • the holes are sealed flush;
  • Coating water-repellent insulation of foundation walls is produced.

The second method is to carry out waterproofing work using the Penetron mixture.

Water-repellent treatment of the base is carried out as follows:

  • clean the plaster layer from the walls using a chipper, a hammer drill, or a stiff wire brush;
  • concrete walls are cleaned of remnants of tiles, dirt, paint layers, greasy stains, oils - nothing should interfere with the adhesion of the mixture to the wall. If we have polished surfaces, we etch them with a weak acid solution for an hour and a half and then wash them with water.
  • floors in basements and basements are being dismantled.

Then the floor must be strengthened horizontally, for which a reinforcement network is used. The ends of the mesh are connected with reinforcement ties.

After strengthening the mesh on a horizontal surface, the structure is filled with pre-prepared sand cement mortar to which crushed stone is added.

Preparatory work for waterproofing

Preparatory work waterproofing consists of the following steps:

  • removing the cement mixture from the joints of the brickwork material;
  • areas of possible leaks are sealed with a quick-setting sealant from Penelag, which hardens very quickly. To prepare Penelag you need:
  • dry mix Penelag;
  • water.

The mixture is combined with water in a ratio of 0.15 liters of water per 1 kg of mixture. The temperature of the mixture should not be less than 20 degrees Celsius.

  • The mixture is thoroughly mixed to a paste-like mass, smooth, uniform consistency.
  • Due to the fact that the mixture hardens quickly, there is no need to prepare a large amount at once. The time for using the solution does not exceed 30 seconds before setting.
  • Then all connecting surfaces are treated with an additional penetrating waterproofing material, Penetron. The material is applied with a wide brush or brush.
  • Then the dry Penecrit mixture is diluted.
  • To do this, prepare identical containers with measuring marks and a clean plastic container in advance.
  • For mixing, use a drill or construction mixer.
  • If small volumes are mixed, mixing is done by hand with obligatory hand protection with rubberized gloves.

Making the mixture

The mixture is prepared at the rate of 200 grams of water per 1000 grams of Penecrit. It is necessary to thoroughly stir the composition until a thick, creamy mass without lumps is obtained. This composition is also prepared in small quantities. It is necessary to strictly maintain the proportions, since the difference between the material is that it achieves plasticity with constant stirring.

The longer the mixing process, the more plastic the composition will be. The period of use of the composition is no more than thirty minutes. The suture grooves between the FBS blocks are treated with special care with this composition.

After finishing the work, the foundation walls are moistened and then covered again with Penetton using a large brush or paint brush. painting works. The solution is used to insulate floor surfaces.

Foundation insulation from FBS blocks

Other types of insulation

In addition to expensive injection insulation, you can use coating or cut-off horizontal insulation to protect foundation blocks.

For coating insulation, hot bitumen or mastics based on it are used. Bitumen, creating a film on the surface, seals pores, cracks, holes in FSB blocks, creating an impenetrable barrier for water.

Insulation of foundation wall blocks is carried out as follows:

  • the surface is thoroughly cleaned of dirt, soil, concrete humps;
  • carefully isolate the cracks with a solution of cement and sand;
  • prime the surface of the walls;
  • the first ball of heated bitumen is applied to the dried layer;
  • after completely dry the first ball of bitumen is applied with a second layer using strokes perpendicular to the strokes of the first layer to create a durable coating;
  • For proper effect, such a coating should not have a thickness of less than three millimeters in one ball.

Working with hot bitumen is quite dangerous due to its heating to a temperature of at least 120 degrees for work. Hardening takes place very quickly, so it only takes 4-5 minutes to apply to the wall. If it's cold enough outside, working with a hot compound is very inconvenient.

Cold bitumen mastics are much more effective in this case. This mastic contains polymers, which makes it plastic.

The most modern material for coating waterproofing of foundation blocks is penetrating waterproofing with penetrating compounds. The composition is based on cement, quartz dust, and polymer additives. When the mixture is applied to concrete, it gets inside due to capillary suction and crystallizes in the pores of the concrete. As a result, after the mixture dries, we obtain a monolith that is one third stronger concrete base. As water tries to penetrate deeper, the concrete becomes even stronger.

Dry penetrating mixtures are sold dry in bags and diluted with water to the consistency of thick sour cream. The composition should be easily applied with a brush or brush. When working, you need to observe a time lag of 30 minutes, since the solution sets quickly. It is strictly prohibited to dilute the solution.

E The steps for foundation waterproofing with penetrating insulation look like this

  • the foundation is cleared of dirt:
  • wall blocks are cleaned of remnants of paint, plaster, and old coatings;
  • if the surface of the old foundation coating is glossy, it is treated with acid for several minutes;
  • The surface must be damp when applying the waterproofing solution.

The solution is applied manually with a brush or roller in several layers. The full effect of waterproofing with a penetrating mixture is visible after a few days.

Methods for waterproofing foundations made of FBS blocks


Foundation waterproofing is the basis of a quality structure. How to make it correctly and from what materials? How much time will it take?

Every house must have a foundation. Without it, any structure will quickly settle and eventually crack and even collapse. In order for a building to last longer, it must be placed on a foundation. This will help in its long-term, groundwater will not cause damage, as they would do every autumn and spring season if there were no foundation. To maintain the longevity of the structure, it is better to use waterproofing.

Foundation waterproofing

For those who are thinking for the first time about whether it is necessary to do waterproofing, we will answer right away - of course, it is necessary. After all, we are talking about protecting the surface of the supporting structure. This is almost always a basement wall or basement wall. One of the building materials that is used for protection is aerated concrete. Waterproofing of aerated concrete most often occurs on FSB blocks.

There are two types of waterproofing:

  • vertical;
  • horizontal.

The vertical type requires a lot of work, but the result is worth it. They start from laying the foundation, to those places where rain or other water waste may leak. The entire foundation row is cleaned of various types of protrusions and chips. All seams are cleaned and sealed.

In the horizontal type, everything is much simpler. Waterproofing of aerated concrete blocks occurs through the application of layers consisting of roofing felt sheets, which are made of bitumen. They are folded step by step into balls. Such balls of roofing material act as a shield to prevent any moisture from penetrating to the surface of the foundation block.

It is necessary to waterproof surfaces in the middle of the structure and on the surface. All work must be done at the same temperature balance, preferably at least 5 degrees.

And in this case, there is a need to clean all the protrusions, remove dirt, chips, and also seal the seams, treat everything with cement. Sometimes they use the method of applying liquid glass to the surface, which makes it possible to maintain the durability of the structure a little longer. And although this method is labor-intensive and expensive, its results are worth it.

Variations with waterproofing work

Waterproofing works

One of the waterproofing layer options is applied to the foundation block:

  • plaster layer;
  • pasting layer;
  • coating layer.

Type of plaster layer: this composition contains a part of cement mortar with several layers, to which certain additives are added - ceresite, any version of liquid glass, sodium aluminate. The foundation wall is protected from any wet penetration of aerated concrete blocks. Apply several times and only when hot.

Type of adhesive layer: budget option. It is also not labor-intensive. Waterproof material made of polymer-bitumen composition. Protects against moisture, both capillary and filtration. One of the simplest ways to waterproof aerated concrete blocks. The components are heated on the burner.

Having received the hot state of the composition, it is applied to the external foundation. Sometimes, when waterproofing adhesive type, materials with a dark-skinned surface are used. Then there is no need to heat the material.

Materials with a darkening surface:

  • roofing felt;
  • hydroisol;
  • brizol;
  • isol.

Ruberoid is used in the surface layers of the foundation roof. Waterproofing material is used around the perimeter. The waterproofing agent contains fiberglass material, which prevents the possibility of destruction due to the influence of fungi and rot.


Foundation waterproofing

One type of insulation is vertical insulation of foundation blocks. One of the most technologically difficult, but effective, injection waterproofing, increases the level of moisture resistance of the foundation material. Waterproofing by injection consists of filling microcracks, seams, and holes with a special compound under pressure.

This method of performing work requires quite a lot of resources and rare, expensive equipment. But the high cost is covered by durability.

Waterproofing foundations consisting of FSB blocks consists of the following steps:

  • the seams of the blocks are embroidered to a depth of 50mm;
  • a drill is used to divide holes in increments of 20 cm, reaching 75% of the wall thickness;
  • parkers for injections are installed;
  • a special modified polymer is poured;
  • the procedure is performed with a pump for this type of work;
  • parkers are removed;
  • the holes are sealed flush;
  • Coating water-repellent insulation of foundation walls is produced.

The second method is to carry out waterproofing work using the Penetron mixture.

Water repellent is done as follows:

  • clean the plaster layer from the walls using a chipper, a hammer drill, or a stiff wire brush;
  • Concrete walls are cleaned of tile residues, dirt, paint layers, grease stains, oil - nothing should interfere with the adhesion of the mixture to the wall. If we have polished surfaces, we etch them with a weak acid solution for an hour and a half and then wash them with water.
  • floors in basements and basements are being dismantled.

Then the floor must be strengthened horizontally, for which a reinforcement network is used. The ends of the mesh are connected with reinforcement ties.

After strengthening the mesh on a horizontal surface, the structure is filled with pre-prepared sand-cement mortar to which crushed stone is added.


Preparatory work for waterproofing consists of the following steps:

  • removing the cement mixture from the joints of the brickwork material;
  • areas of possible leaks are sealed with a quick-setting sealant from Penelag, which hardens very quickly. To prepare Penelag you need:
  • dry mix Penelag;
  • water.

The mixture is combined with water in a ratio of 0.15 liters of water per 1 kg of mixture. The temperature of the mixture should not be less than 20 degrees Celsius.

Step by step mixing:

  • The mixture is thoroughly mixed to a paste-like mass, smooth, uniform consistency.
  • Due to the fact that the mixture hardens quickly, there is no need to prepare a large amount at once. The time for using the solution does not exceed 30 seconds before setting.
  • Then all connecting surfaces are treated with an additional penetrating waterproofing material, Penetron. The material is applied with a wide brush or brush.
  • Then the dry Penecrit mixture is diluted.
  • To do this, prepare identical containers with measuring marks and a clean plastic container in advance.
  • For mixing, use a drill or construction mixer.
  • If small volumes are mixed, mixing is done by hand with obligatory hand protection with rubberized gloves.

Making the mixture

The mixture is prepared at the rate of 200 grams of water per 1000 grams of Penecrit. It is necessary to thoroughly stir the composition until a thick, creamy mass without lumps is obtained. This composition is also prepared in small quantities. It is necessary to strictly maintain the proportions, since the difference between the material is that it achieves plasticity with constant stirring.

The longer the mixing process, the more plastic the composition will be. The period of use of the composition is no more than thirty minutes. The suture grooves between the FBS blocks are treated with special care with this composition.

Once the work is completed, the foundation walls are moistened and then coated again with Penetton using a large broom or paint brush. The solution is used to insulate floor surfaces.


Other types of insulation

In addition to expensive injection insulation, you can use coating or cut-off horizontal insulation to protect foundation blocks.

For coating insulation, hot bitumen or mastics based on it are used. Bitumen, creating a film on the surface, seals pores, cracks, holes in FSB blocks, creating an impenetrable barrier for water.

Insulation of foundation wall blocks is carried out as follows:

  • the surface is thoroughly cleaned of dirt, soil, concrete humps;
  • carefully isolate the cracks with a solution of cement and sand;
  • prime the surface of the walls;
  • the first ball of heated bitumen is applied to the dried layer;
  • after the first ball of bitumen has completely dried, a second layer is applied with strokes perpendicular to the strokes of the first layer to create a durable coating;
  • For proper effect, such a coating should not have a thickness of less than three millimeters in one ball.

Working with hot bitumen is quite dangerous due to its heating to a temperature of at least 120 degrees for work. Hardening takes place very quickly, so it only takes 4-5 minutes to apply to the wall. If it's cold enough outside, working with a hot compound is very inconvenient.

Cold bitumen mastics are much more effective in this case. This mastic contains polymers, which makes it plastic.

The most modern material for coating is penetrating waterproofing with penetrating compounds. The composition is based on cement, quartz dust, and polymer additives. When the mixture is applied to concrete, it gets inside due to capillary suction and crystallizes in the pores of the concrete. As a result, after the mixture dries, we obtain a monolith that is one third stronger than a concrete base. As water tries to penetrate deeper, the concrete becomes even stronger.

Dry penetrating mixtures are sold dry in bags and diluted with water to the consistency of thick sour cream. The composition should be easily applied with a brush or brush. When working, you need to observe a time lag of 30 minutes, since the solution sets quickly. It is strictly prohibited to dilute the solution.

E The steps for foundation waterproofing with penetrating insulation look like this

  • the foundation is cleared of dirt:
  • wall blocks are cleaned of remnants of paint, plaster, and old coatings;
  • if the surface of the old foundation coating is glossy, it is treated with acid for several minutes;
  • The surface must be damp when applying the waterproofing solution.

The solution is applied manually with a brush or roller in several layers. The full effect of waterproofing with a penetrating mixture is visible after a few days.

Video: waterproofing a foundation made of FBS blocks

All known methods FBS waterproofings are intended not to eliminate moisture in any separate place building, but to comprehensively protect the load-bearing structure of the building, without which it simply cannot exist. Modern industry is constantly developing new compounds to protect structures and foundations.

Regardless of the type of foundation (monolithic, prefabricated, pile) and the depth of the layers groundwater, protection of the structure from negative impact moisture. This task is especially relevant in prefabricated foundations, since the seams between the blocks are a rather vulnerable place in terms of the degree of water permeability. Therefore, waterproofing FBS blocks in prefabricated strip foundations required.

There are several methods of waterproofing and many modern materials with moisture-proof properties, but many of them are expensive and can only be performed by specialists. But even today, with the abundance of new polymer materials, old and proven methods are most often used. They are also applicable to private developers, as they are the most profitable in terms of financial costs. The basement is waterproofed using FBS in the same way, if the design does not provide for additional moisture protection.

How to waterproof a foundation using FBS blocks

For the construction of large residential and industrial buildings detailed project documentation on structural calculations using data from geological studies of the site and climatic conditions of the development area. At individual construction This is not required, but it is necessary to know the depth of groundwater and the composition of the soil. For example, if there is clay soil below the base of the foundation or a large amount of groundwater, rain and flood water can cause flooding in basements and basements. What is needed to prevent this from happening? First, this is a mandatory gasket drainage system along the perimeter of the foundation. And second, vertical and horizontal waterproofing of FBS blocks must be multi-layered. And third, wide concrete blind area at the zero level along the entire perimeter of the building.

For horizontal waterproofing For a foundation made of FBS blocks, you can use ordinary roofing felt, laid in a continuous strip along the entire upper surface of the foundation. To fix roofing felt or any rolled insulating material, bitumen mastic is usually used. The material must necessarily hang over the sides of the foundation, partially protecting the side surface.

On vertical surfaces Waterproofing is applied in stages, in several layers. The thickness of the layer depends on the properties of the foundation material. Construction organizations who have their own FBS production and develop projects themselves can calculate minimum thickness layer for your materials. But when laying the foundation yourself, the waterproofing of FBS blocks should be maximum (up to 5 cm) in order to eliminate the possible need to strengthen it in the future.

For the first layer, use a mixture of heated bitumen mastic, which is quickly applied with a roller or brush. You can use a composition of 70% bitumen and 30% waste machine oil. After the layer has dried, a second layer is applied. When further applying more layers, reinforcing fiberglass is laid before the third and then mastic is applied again. To reduce the number of layers, roofing felt or polymer material, glued to bitumen mastic.

When waterproofing a plinth made of FBS with inside additionally can be used ready-made mixtures and compositions, for example Maxrest, Maxplug, Maxsil. These solutions, pumped into the seams between the blocks, eliminate the possibility of leaks. Similar mixtures are used for reconstruction work in basements and basements and for eliminating deficiencies in existing waterproofing.

The foundation is the foundation of every home. No construction can be done without it, as it ensures the reliability and durability of the buildings. For its long-term service, waterproofing the foundation from FBS blocks will come to the rescue.

It is impossible to do without waterproofing on those construction sites that are subject to the pressure of groundwater, which becomes active in the autumn and spring seasons.

The meaning of using foundation waterproofing

Many who are faced with construction for the first time are wondering why foundation waterproofing is needed. It comes down to surface protection load-bearing structures, most often basement walls or basement walls play this role. One of the many materials for waterproofing is FBS blocks.

Waterproofing Division

Waterproofing can be divided into two types:

  • Vertical - This is the most labor-intensive type. You need to start from the very bottom of the foundation to the place where it falls rainwater. Before starting work, you should prepare the foundation; for this you will need to clean it from various chips and protrusions, and make seams between the FBS blocks.
  • Horizontal - This is a simpler method of waterproofing using blocks. Its essence lies in the application of a layer consisting of roofing material made of bitumen, which is folded several times. It performs the task of protecting against capillary penetration of moisture.

Waterproofing should occur both inside and outside the structure. Moreover, the work must be carried out at a certain temperature conditions, which must be at least five degrees.

Before applying the waterproofing layer, you should take care to clean the foundation from dirt, chips and protrusions, and seal the seams that need to be treated with cement mortar.

To make the waterproofing more reliable, you can use a special technique, which consists of applying liquid glass, having long term services. This method It will be a little more expensive, but the costs will justify its action.

Variation of waterproofing

Apply to blocks waterproofing layer. It happens:

  1. Plastering. The composition includes cement mortar in several layers with the addition of certain additives: ceresite, liquid glass, sodium aluminate. This method allows you to protect the foundation from capillary penetration of moisture. It should be applied only when it is hot, application should occur in several layers.
  2. Pasting. Most a budget option, which does not require much labor. It is a waterproof material containing a polymer-bitumen composition. Has good protective functions from capillary and filtration penetration of moisture. It is a simple and reliable method of waterproofing. Such material is usually brought to a hot state using a burner, and then applied to outer part foundation. In certain cases, adhesive waterproofing has a self-adhesive surface, then the impact of the burner on the material is eliminated. The most famous pasting materials used in work: roofing felt (most often, its use occurs in top layer roof), waterproofing (always produced in the form of rolls, thanks to the fiberglass material that is part of its base, decomposition and rotting do not occur over time), brizol (rubber-bitumen mass produced in roll form), isol (rubber-bitumen material of a roll type ).
  3. Coating. This option consists of a thin multilayer shell, which is applied to the surface using asphalt, bitumen, coal-tar coating. Synthetic resins and polymer materials can also be used.

Waterproofing methods

Waterproofing a foundation with your own hands can be done in several ways.

The first technology, injection, increases the margin of reliability and strength of the fundamental foundation. The injection process consists of filling cracks and seams using a special injection composition.

This technology requires significant material investments, and its implementation will require expensive equipment. But the high cost pays off with reliability and durability.

But how to waterproof a foundation from FBS blocks using this technology? Work stages include:

  • The seams of the blocks are unstitched at a depth of thirty to fifty millimeters.
  • Then it is necessary to drill holes at a distance of two hundred millimeters with a depth of two-thirds of the thickness of the foundation walls.
  • After which it is necessary to install the parkers used for injection.
  • A special modified polymer is poured between the FBS blocks.
  • Injection is carried out using a pump designed to perform this work.
  • Then the parkers are dismantled.
  • Sealing of holes.
  • Next you need to make coating waterproofing foundation walls.

The second technology is to carry out waterproofing using Penetron.

It is done as follows. Walls that have a plaster layer need to get rid of it. This work can be done using a hammer drill, a jackhammer, or a smooth, stiff brush. Concrete walls cleaned from dust, greasy components, paint, dirt, tiles and other similar materials. If the walls are sanded, a weak acid solution must be applied to them and after an hour, they are washed with water.

If there are floors in basements or ground floors, they must be completely removed.

Then the floor is horizontally strengthened using reinforcing mesh, the ends of which are fastened using reinforcement ties. After which, all this must be filled with pre-prepared cement mortar with the addition of crushed stone and sand.

Start preliminary work waterproofing, include the following actions:

  • From the seams of masonry material, removed cement mixture. Places where leaks may occur are treated with a fast-hardening filling from Penelag, which sets in a short period of time.

In order to prepare Penelag you will need: dry Penelag mixture mixed with water in the proportion: one hundred and fifty grams of water per one kilogram of mixture. The water temperature should be twenty degrees. Be sure to mix thoroughly for three minutes until a thick consistency without lumps is formed. Do not dilute a large amount of material at once, since the solution should be used, at best, within thirty seconds.

  • Next, all joints must be treated using an auxiliary penetrating material with waterproofing properties, Penetron. Application can be done using a wide brush or a synthetic brush.

  • Next you need to dilute the dry mortar Penecrit. To do this, you need to prepare containers of the same size, with measuring divisions and a clean plastic container. A drill with which mixing will be carried out. If small volumes are to be diluted, then you can do without it, and mix it manually using thick gloves with a rubberized surface. The mixture must be added with water, the proportion is two hundred grams of water per kilogram of Penecrit. Everything is thoroughly mixed. The output should be a thick, viscous composition of a homogeneous mass, without lumps. This material also does not need to be prepared in large quantities. Water must be added according to instructions. The peculiarity of this material is that plasticity is achieved through constant stirring. The longer the mixing is carried out, the more plastic the composition will be. This mixture must be used within thirty minutes.
  • All seams and joints that are located between the FBS blocks are very carefully coated with the diluted compound.
  • At the end of the work, the foundation walls need to be well moistened, after which they are coated again with Penetron using a wide brush or brush.

This solution can be used in the treatment of floor surfaces.

The need for waterproofing foundation blocks is due to the specifics of construction technology using FBS. Injection treatment of slab joints, filling voids and cracks with special mixtures guarantees a long service life of the structure.

Distinctive characteristics of a foundation made of FBS blocks

Industrially manufactured products from high strength concrete, characterized by stable geometry, good performance waterproof and compressive strength. The main raw material of reinforced concrete blocks is granite crushed stone With permissible level background radiation and river sand without including clay. This provides the material with frost resistance.

A prefabricated foundation consisting of large blocks cannot be reinforced traditional methods- rods and meshes bend under the weight of the slabs. The lack of stabilization of FBS leads to their deformation and the appearance of cracks. The voids between the blocks become a source of penetration of groundwater and storm water into the structure.

Causes of leaks and flooding of basements

The walls and other surfaces of the basement floors become damp, and the premises are subject to flooding due to violations of construction technology: lack of a drainage system, roll waterproofing foundation soles and ventilation ducts. Leaks occur due to the proximity of the groundwater facility to the walls.

Flooding of a FBS basement occurs when one of the construction stages is skipped: preliminary compaction of sand and crushed stone in a dug pit with a vibrating plate, filling the voids between reinforced concrete slabs with concrete. After installing the blocks, it is often necessary to create an armored belt on top of them under the Mauerlat and ceilings. Technological requirements include mandatory waterproofing of the foundation when high level groundwater at the construction site.

Ways to troubleshoot problems. Advantages of using the injection method

Injection waterproofing of building basements, industrial enterprises and other structures are produced as preventative measure to prevent leaks, it allows you to eliminate dampness and moisture that penetrates into the room through the joints of foundation slabs or at the places where utility lines enter.

Waterproofing of a block foundation, injection of special mixtures for treating seams, wall joints and voids, is carried out without restrictions regarding their location on the surface - horizontal or vertical. Liquid form and high viscosity values protective compounds create the opportunity for processing hard to reach places, guarantee their penetration deep into building materials. This effect is achieved incl. due to the presence of viscosity comparable to the fluidity of water, acrylate gels.

Waterproofing of FBS blocks by injection is carried out using the latest generation mixtures. Resins and gels made using innovative technologies, allow processing of the foundation without dismantling its elements. The chemical resistance and strength of the created protective screens reliably isolates basements from the penetration of melt, ground and storm water.

Materials and technologies

Polyurethane resins, which are used for waterproofing building structures made from FBS blocks, are two-component materials with high rates of adhesion and elasticity. When in contact with liquid media, the mixture increases in volume up to 20 times, demonstrating water resistance at pressure levels of 2 MPa and above.

Injection waterproofing of foundation blocks with resins is carried out in several stages:

  • determining the location of the leak;
  • drilling holes in concrete at an angle of 45 degrees;
  • installation of discharge pipes into grooves;
  • filling seams or cracks with polyurethane foam under pressure of 150 atm to stop water flows;
  • injection of polyurethane resin into the cavity;
  • checking for leaks;
  • dismantling of equipment;
  • sealing the created holes.

Using polyurethane mixtures in basements, cracks of a minimum size, from 0.1 mm, are isolated by displacing moisture from voids and filling with resin. The created monolithic water barrier is characterized by high resistance to chemical media, strong adhesion to concrete surfaces and durability - service life up to 100 years.

Waterproofing a block foundation and basement with acrylate gels allows you to fill not only the cavities inside the walls, ceiling or floor with the material, but also the space around the seams. The technology of injecting the mixture under pressure is in many ways similar to the treatment of leaks with polyurethane resins.

There are several methods for carrying out work to insulate the foundation and basement from moisture with acrylate gels:

  • volumetric - used for preserving structures buried in the ground without losing their vapor-permeable properties and pre-excavating elements;
  • cut-off - creating an anti-capillary curtain between the walls of the building and the foundation blocks;
  • veil - organization of a protective membrane between the soil and elements building structure to protect against dampness and damage to the material due to water penetration.

Acrylate gel processing technology has proven itself in repairs expansion joints, processing of the foundation at the joints of FBS blocks. If there are pressure leaks protective screen Withstands water pressure up to 2 barrels.

Advantages of injection waterproofing with resins and gels

Low viscosity up to 150 MPa of innovative materials for treating foundation leaks from FBS allows penetration into all pores work surface. This provides protection from water even with subsequent deformation of the building structure and enlargement of the repaired cracks. Mixtures based on acrylates have increased tensile strength and retain their elasticity when sub-zero temperatures air.

Acrylate gels and polyurethane resins for insulation do not require pre-drying of the working surface of the foundation due to their high adhesion strength to dry and wet materials. One of the advantages created injection method water barriers - immunity to not only moisture, but also mold fungi. The use of innovative means for waterproofing FBS blocks is possible in wide range temperatures - from +3 °C to +40 °C.

Acrylate-based gels, which were used during the construction phase of the building, stabilize the soil adjacent to the structure and reduce shrinkage concrete foundation. Innovative materials allow for repairs of previously produced waterproofing of FBS blocks.

By phone you can get advice and call craftsmen, they will be able to assess the complexity of the work, calculate the estimate, and draw up an agreement for the performance of services.