Foundation waterproofing - what material to choose? How to make waterproofing of various types of foundations with your own hands Horizontal waterproofing of a strip foundation

Waterproofing the strip foundation helps prevent the negative effects of moisture on the bearing parts of the house. Since the cement base has a high capillarity, the penetration of moisture into the reinforcement will lead to oxidation of the reinforcement, which is fraught with distortions and shrinkage of the entire structure. In the article we will consider the device of the strip foundation, as well as the methods of hydroprotection of its main parts.

What is strip foundation?

The device of the strip base is quite complicated, since the structure is a closed concrete circuit located on a sand and gravel cushion. To reinforce the base, a reinforcing mesh is used, which consists of metal bars. The structure can be located directly on the ground or on piles, which take on the static load created by the building.

For what purposes is the waterproofing of the strip foundation done by hand? It should be taken into account that the strength of the concrete base during operation will be destructively affected by sedimentary, ground and capillary waters. To prevent damage to building materials, it is necessary to implement a number of measures to divert water from the building. These include:

• drainage system device;
• laying a waterproofing pillow;
• hydroprotection of the bearing parts of the structure (supporting piles, plinth, formwork).

The main types of waterproofing

After mounting the strip base, it is important to take care of the “cut-off” of moisture from the structure. To do this, use various waterproofing materials, namely:

• Coating - insulation occurs with the help of polymer or bituminous compounds that prevent the penetration of moisture into the foundation;
• Rolled - materials with good water-repellent properties are suitable for finishing the basement, pile-tape base (bearing supports), as well as waterproofing the foundation for a monolithic slab. The most popular among rolled moisture insulators are roofing material, polyethylene film, geotextiles;
• Sprayed - waterproofing agents are applied to concrete structures using spray guns. As a spray mixture, liquid solutions based on bitumen and polymer additives are used;
• Impregnation - mixtures of liquid consistency, which easily penetrate into the structure of the concrete coating, filling all the pores. Thus, it is possible to prevent moisture from entering the foundation and the destruction of reinforcing meshes.

Horizontal hydroprotection

Horizontal waterproofing is a complex of construction works that prevents the penetration of moisture into concrete structures from underground. Waterproofing of this type is needed in case of arrangement of any type of foundation:

• tape;
• monolithic;
• pile;
• pile-tape.

How is horizontal insulation done? To ensure reliable protection of the structure from the negative impact of groundwater, a nominal horizontal hydroprotection is used. It literally “cuts off” moisture, which, due to the capillarity of the soil, rises to the concrete structures. For the quality of the work, you must do the following:

1. Take care of laying a waterproofing pad of sand and gravel. The layer thickness must be at least 25 cm;
2. Make a concrete screed with a thickness of about 10 cm, then postpone work until the cement has completely hardened (at least 12 days);
3. Then a calculation is made to dilute the required amount of bituminous mastic, with which it is necessary to process the concrete tape;
4. After that, the base is covered with roofing material in several layers;
5. Next, the formwork is installed for pouring the second layer of the screed;
6. At the final stage, it is planned to insulate the floor and lay the finish coat.

To understand how horizontal waterproofing of concrete structures is done, you can watch a video clip that describes the sequence of performing all the necessary work.

Vertical waterproofing

Vertical isolation of a structure from moisture involves the processing of exclusively vertical parts of the structure, in particular, the basement, piles, etc. This procedure is recommended to be performed if there is a basement in the house. In this way, excess moisture can be prevented from entering the underground room, from where it can penetrate into the floor base of the first floor of the building.

How is vertical waterproofing of concrete structures done? In this case, to ensure the water-repellent properties of the foundation, various processing methods can be used:

• plastering;
• gluing with rolled insulators;
• spraying with bituminous compositions.

But before making the calculation of the materials necessary for insulation, it is worth choosing the best option for waterproofing. Experts recommend using two methods of waterproofing at once: coating and gluing. How to do it? If there is a filing in the building, the course of work will be as follows:

1. First of all, the working surface must be coated with bituminous mastic;
2. After that, paste over the basement for the basement with technoelast (a kind of roofing material);
3. When calculating roll materials, please note that they must overlap with a margin of at least 15 cm;
4. To ensure the sealing of the seams, melt them with a gas burner, as a result of which adjacent sheets will stick together.

The device and the nuances of processing a strip foundation with vertical waterproofing are shown in the video material.

Features of isolation of the foundation and basement with roofing material

Waterproofing of a monolithic foundation is most often done using roofing material. It can be used both independently and in combination with bituminous solutions. When covering a concrete structure with roofing material, several important rules must be observed:

1. Moisture insulation under the slab begins with the application of a bituminous solution;
2. The calculation of the amount of roofing felt is done taking into account an overlap of 15 cm;
3. After that, using a gas burner, the insulator is softened and placed on the working structural elements;
4. When carrying out waterproofing work to finish the foundation for a monolithic slab, you can use special mastics to seal the joints.

Moisture insulation of the structure with roofing material should be carried out using only high-quality materials. Ezoelast and tezhnoelast insulators are considered optimal for protecting the concrete base. The process of laying materials is clearly demonstrated in the video clip.

Moisture insulation of the pile-tape base

How to properly insulate in the case of arranging a pile-strip foundation? The absence of a feeder implies additional processing not of the basement of the structure, but of the concrete bearing parts themselves - piles. It is they who take the maximum static load created by the weight of the structure itself.

Why do you need protection for pillars? Under the influence of moisture, the supports begin to collapse over time due to corrosive processes occurring in the armature of the pillars. To prevent warping and subsidence of the base, additional hydraulic protection of the bearing parts is required. How to protect the pile-tape base without a basement?

• Bored piles. Bored supports are concrete pillars reinforced with metal reinforcement. As a rule, they are installed in casing pipes that do not provide the proper level of protection against moisture. In the process of erecting the structure, it is desirable to insert roofing material into the wells for racks, which will play the role of formwork and waterproofing;
• Screw piles. Elements of the concrete structure are represented by steel screws that are screwed into the ground. To protect them from corrosion, the spiral legs of the piles are treated with hydrophobic anti-corrosion solutions;
• Driven piles. The supports in this case are reinforced concrete or wooden poles. To protect them, antiseptic and anti-corrosion treatment is needed. Special impregnation and coating with bitumen will not be superfluous.

Do you need moisture protection for a sand cushion?

What are the functions of a sand bed? A mound of sand and gravel, which is often made during the laying of strip foundations, performs two tasks at once:

• Cuts off water from the structure;
• Helps to evenly distribute the load.

Laying a pillow is a prerequisite for the construction of a basement in a house. As a rule, it is in this room that it is quite damp, which creates all the conditions for the accumulation of condensate under the floor and the reproduction of the fungus. Is waterproofing the pillow necessary in this case?

If the building itself is installed on the ground with strong heaving, in the process of laying the sand cushion, it is necessary to calculate the required amount of waterproofing. It is laid on a layer of sand and gravel, which violates capillarity and the flow of moisture from underground into a concrete structure.

Moisture insulation of the formwork

To answer the question of whether formwork hydroprotection is needed or not, consider its main functions. The design is intended to limit the space into which the concrete solution will be poured to form the foundation. In other words, the main function of the formwork is the design of a liquid solution, which, when solidified, forms the necessary geometric shape.

For the assembly of formwork, as a rule, wooden panels are used, which are hygroscopic. Because of this, structural elements can be deformed, which will lead to a distortion of the geometric shapes of the poured concrete base. In this case, the answer to the above question becomes obvious: formwork waterproofing is really necessary.

What types of insulators are used to finish the formwork? To protect wooden formwork elements, the following can be used:

• bituminous solutions;
• hydrophobic impregnations;
• water-repellent varnishes;
• roll insulators.

When calculating the amount of waterproofing agents used, it is worth noting that for formwork processing, painting with bitumen will be the most budgetary option.

Do I need insulation for the strip foundation?

Why insulate concrete structures? There are three main reasons why it is necessary to insulate tape bases.

The strip foundation of your house should be “dressed” in waterproofing materials. Proper and reliable waterproofing of the strip foundation of your home is one of the top priorities that you must definitely solve.

Tape is a reinforced concrete strip. It goes along all the external dimensions of the structure and along the load-bearing internal walls.

We know from life experience that in order to preserve our health, we put on warm clothes in cold weather, we put on shoes accordingly in wet weather. We go fishing and hunting in special wading boots so as not to get our feet wet and not get sick. But many unfortunate builders think that the built house, in particular, its foundation, can be located in a rather damp and cold environment - in the ground - without protection from this aggressive environment.

Therefore, in order for the house you built:

• pleased you and more than one generation of your descendants;
• was a “long-liver”, for which you need to preserve the “health” of your home;
• did not cause trouble from frequent repairs, alterations, reconstructions due to illiterate construction and subsequent operation,

modern technology for isolation from groundwater is required.

This is an important issue that we must deal with.

Waterproofing properties

To create a waterproofing that will last you for many years, you need to use a high-quality, specially designed material with certain properties and characteristics.

The material used must be:

Modern materials have these properties and differ only in a greater or lesser degree of their manifestation.

good drainage

Light soils - sands and sandy loams - are able to easily pass the emerging moisture into the lower layers of the soil. Water does not stagnate near the erected foundation, and therefore waterproofing can be a little easier compared to the waterproofing device, standing on heavy, heaving soils - clay, loam.

As a rule, on heaving soils they arrange a drainage system for collecting and removing moisture from a concrete foundation. For this, special drainage membranes are used, which are placed under a monolithic slab on which a strip foundation stands.

Under the sole of the reinforced concrete foundation tape, carried out in a trench (a house without a basement) along all external and internal load-bearing walls of the house, with a depth of the foundation sole 20-30 cm below the freezing point of the soil, a sand-gravel or sand-gravel pillow is necessarily constructed. Such drainage is able to divert moisture to the lower layers of the earth. The width of the bulk and compacted cushion should be 20 cm more than the width of the strip foundation. The cushion prevents water stagnation and silt or clay from being drawn in when the groundwater level rises on the foundation surface and damage to the vertical waterproofing. A vertically installed drainage membrane helps to drain excess water away from the building, preventing it from exerting pressure on the waterproofing itself and looking for weaknesses in it.

Horizontal and vertical insulation

Horizontal waterproofing is carried out under a monolithic slab by laying a drainage membrane on a monolithic layer of lean concrete with a slope into the outlet pipeline, followed by the installation of a reinforced mesh and pouring, on which a strip foundation is assembled or poured around the perimeter of the house.

Horizontal waterproofing is also done to separate the upper plane of the strip foundation and the starting wall. It is carried out by spraying the appropriate material or laying rolled waterproofing materials.

All vertical planes of the strip foundation from top to bottom are covered with modern materials specially designed for this.

Several types of waterproofing

Non-pressure waterproofing protects the strip foundation from external atmospheric precipitation penetrating the soil, and from the spring and autumn temporary rise in the groundwater level.

For reliable anti-pressure waterproofing of the basement, it is better to apply three layers of slurry.

After the vertical waterproofing is completed, the foundation is backfilled. The best result is achieved with layer-by-layer backfilling with inert, well-conducting water materials, such as quartz (river) sand with the least clay impurities, gravel mass or earth. Backfilling with construction debris is undesirable, since it is after this operation that the integrity of the waterproofing of the strip foundation can be damaged. On the surface of the earth around the entire perimeter of the building, a blind area 1 m wide is made of concrete or asphalt.

Anti-pressure insulation, in turn, protects the foundation of the house from contact with permanent nearby groundwater in the foundation area. Coating, spraying, painting materials are used for such purposes. After applying such insulating materials, a continuous layer of insulation is formed without joints and seams with good repulsive properties.

Capillary waterproofing prevents moisture droplets from entering the concrete monolith. It gives the best results when concrete is impregnated with compositions both from the inside and from the outside of the foundation tape. Impregnating compositions penetrate deep into the concrete for several centimeters, filling the smallest pores in the concrete, making the strip foundation practically airtight and able to withstand external moisture.

Sequence of work

Work on the isolation of the strip foundation from the external influence of the environment should take place on a surface cleaned of dirt.

First of all, it is necessary to choose the method of application, and at the same time the insulating material itself.

Coating waterproofing is carried out with mastic, bituminous compounds, liquid glass. In most cases, it is used as the first layer of insulation and as a bonding layer for gluing rolled materials.

After this layer, the foundation is covered with roofing felt or other rolled materials in two layers, gluing the layers onto the mastic. The joints are made with an overlap of 20 cm.

Waterproofing is also possible with the use of spraying with special compositions using a sprayer.

After performing any type of waterproofing, it is advisable to mount a special roll profiled membrane, which will protect the waterproofing from damage and help drain excess water from the foundation. The membrane is also rolled out with an overlap at the joints of 15-20 cm.

Any type of waterproofing material is designed for use in certain conditions. Waterproofing intended for coating is no exception. This is a special coating – a special multi-layer coating. Often everyone uses the Technonikol brand for coating.

Depending on the purpose, it can have a different thickness, the indicators of which vary from a millimeter to several tens of millimeters. It depends on the purpose of the material, on the conditions of use in which it will show its waterproofing qualities.

Coating insulation can be used for internal and external protection of premises and buildings.

All of them differ in service life, technical characteristics, application methods, composition and features of the device.

Each specific species is used in the appropriate climatic conditions. However, it can be responsibly stated that durable and relatively inexpensive coating waterproofings are always in high demand.

What is this material? Usually these are plastic liquid compositions designed to reliably protect brick and surfaces.

After hardening, the applied product forms a strong, seamless film with good resistance to mechanical stress, protecting it from moisture and ultraviolet radiation.

Coating waterproofing must meet the following requirements:

• Guaranteed absolute moisture resistance;
• Durability, resistance to UV radiation, moisture and aggressive;
• High elasticity, which prevents the material from cracking in case of shrinkage of some fragments, as well as under the influence of harmful climatic conditions.

Materials and types of coating waterproofing

All the variety of materials of this type can be conditionally
can be divided into the following groups:

• Polymer cement;
• polymeric rubber.

Bituminous mastic was originally used as one of the types of rolled roofing material. Its fundamental difference lies in the fact that it does not need to be warmed up, and therefore it can be used at any time of the year, including cold weather.

bituminous and polymeric cover previously cleaned surfaces: the plastic agent evenly fills all the pores and cracks of the surface.

Coating foundation protects it from the harmful effects of groundwater, as well as from waters with a deep horizon. Mastics will be optimally effective when the depth of occurrence is approximately 2 meters below the base.

Coating waterproofing technology

The application technology and recommendations of manufacturers suggest covering with 2-4 layers of the agent, at least.

The exact number of layers depends on how deep the foundation is.

The depth of the foundation correlates with the thickness of the waterproofing layer as follows:

• Depth more than 5 meters or concrete piles - thickness from 5 mm;
• Depth from 3 to 5 meters - respectively 2-4 mm;
• Depth up to 3 meters - 2 mm thickness.

The technology of applying the material must be carefully observed in accordance with the manufacturer's recommendations.

waterproofing layers are applied independently of each other, before applying the next, the previous one must dry well. If the next layer is applied to a wet surface, then after a while it can peel off, then air and moisture get inside, which act destructively.

How can you tell if the waterproofing layer is dry enough? This is easy to do, it will be enough to run the palm of your hand over the surface. If it sticks, sticks to the skin, then it has not dried out yet.

The dried mastic is soft and elastic to the touch. The drying speed of each individual layer depends on the manufacturer of the material, its composition, the humidity of the treated surface and the ambient temperature.

Work procedure

We note an important condition. Before you start applying waterproofing material, you need to properly prepare the base. Only in this case, the working qualities of the waterproofing layer will work in full.

The quality of adhesion of the base surface and the applied mastic depends on such an indicator as humidity. Even low levels of humidity can cause deformation of the surface of the protective layer.

The connection of the base and mastic is broken, it does not hold well, and can peel off and even fall off over time. What is the maximum humidity limit?

For polymer-bitumen and bituminous insulation, they should not exceed 4 percent, and for water-based insulation they are slightly higher - 8 percent.

It is strictly forbidden to cover a wet surface with coating mastic.

How do you know if the base has dried enough and can you start working on it? There is a very simple way: about a square meter of base area, a polyethylene film spreads. If no condensation appears from inside it within a day, you can get to work.

What is a primer? Application rules

- This is a special type of bitumen, which includes various mineral components. They help to improve the adhesion of the mastic to the base from, providing the material with optimal adhesion.

For each type of foundation, the primaries are selected individually. Priming compositions for rubble and brick structures have the highest cost.

For the manufacture of the primer, bitumen of the BNK 90/30 or BN 70/30 grade is used, nefras or gasoline is taken as a solvent. The heat resistance of this mixture does not exceed 80 degrees.

For each type of mastic, the primer is selected individually.: it is applied evenly over the entire surface in one layer. In the case when there are joints of horizontal and vertical concrete slabs in the foundation, it is worth applying two layers.

The composition is applied with a brush or roller, then wait for its final drying.

Coating mastic applied as follows:

After the final solidification of the previous layer, you can proceed to the next one.? In this capacity, fiberglass or fiberglass is usually used, characterized by a small outer diameter and remarkable flexibility. It is allowed to use roll materials.

The density of the resulting mesh-reinforcement should be between 100 and 150 grams per square meter.

How is it happening? Fiberglass is slightly embedded in the initial layer of mastic, pressed with help, then fixed with plastic staples. In this case, the adhesion of the reinforced waterproofing to the foundation will be optimal.

Transverse reinforcement is preferable, which thickens the useful waterproofing layer. If there is not enough space for applying mastic, the joints should be deepened. The primer is used to treat the inner surface.

What are the benefits of reinforcement coating waterproofing? It provides a uniform distribution of loads over the surface, makes the material much more ductile and reduces its elongation.

There is an opinion, incorrectly true, that the foundation does not change and does not deform in any way during the entire service life. It does not rot, corrosion does not affect it, and decomposition generally bypasses distant lands. In reality, the foundation is still exposed to these factors, and needs additional protection even more than other parts of the house. Sometimes the question arises whether there is a need to make waterproofing in a tape type foundation. Groundwater has ways to get into basements, cellars, and even basements and walls that are above the ground. It is no secret that the constant freezing of moisture droplets inside the walls destroys these walls. A similar process goes on in the upper part of the foundation of the house. We conclude: a building without waterproofing in the foundation quickly fades away.

Tape-type foundation insulation is available for self-conduction, without additional costs for construction organizations and workers' services. But, before you start work in full, you need to choose what kind of waterproofing you will use, what will be the technology for applying this insulation. Keep in mind that competent isolation from water does not allow seams, tears, inconsistencies. It is also necessary to take into account that waterproofing can be both horizontal and vertical.

Building materials with which you can waterproof the surface of a tape-type foundation have 4 categories:

Coating

sprayed

Roll (Pasting type)

penetrating

Thanks to the choice of building materials, you will make waterproofing using a certain technology.

It is done with the help of a coating building material, these are, as a rule, bituminous mastics and other insulating materials based on it.

Advantages of waterproofing with bituminous coating

Low cost;

Elasticity;

Excellent hydrophobicity of the coating;

Easy to apply;

Good adhesion.

The duration of operation is not long. After 6 years, bituminous mastic already becomes brittle. From which it follows that the waterproofing layer will be covered with cracks, which means that the protection will soon disappear completely.

For this reason, the type of coating building materials has acquired additives in the form of polymers, rubber, latex, etc. Gaining more and more popularity than standard bituminous mastic. They increase the following characteristics of bituminous mastic:

Elasticity;

The spread of temperatures during the application of mastic.

Let's open the topic in more detail, in relation to the waterproofing of the foundation of the tape type and building materials of the coating type.

In the video below, you will see different methods of applying a waterproofing coating to make an impermeable coating seamless.

The method of manufacturing this waterproofing is not difficult to implement. First you need to get ready for work. Remove building debris from the surface, as well as dirt, dust, and loose or loose elements. Then, it is necessary to process the foundation using a special deep primer. As the primer dries, it is allowed to apply a waterproofing building material to the surface that has been treated. To do this, you will need a maklovitsa, a brush designed exclusively for such work. The coating must be continuous and inseparable.

Coating waterproofing technology

In this method of waterproofing, special building materials are used: roofing material, which is needed to insulate a tape-type foundation, but poorly buried. And also, aquaizol, helastoplay, isoelast and other roll types of materials.

These building materials have a wide scope. They are used from the foundation to the roof, and even road works. When using these building materials to protect the foundation of the house, remember that you are protecting immediately from the high pressure of groundwater, including floods. Horizontal and vertical waterproofing using roll technology is often used in buildings that do not have a basement.

Type 1 (pasting) is attached using bituminous mastic, or other compounds with adhesive properties, or a self-adhesive layer;

Type 2 is applied to the surface by surfacing, which makes it necessary to use an additional tool, a gas burner.

Easy to use;

Durable;

Excellent water resistance;

Excellent mechanical strength characteristics;

Based on the composition of roll building materials, their index of predisposition to destruction is found, as well as the magnitude of the influence of chemicals acting on them. The rolled type of building materials, which are based on fiberglass, or fiberglass, does not have high deformation rates, but also low resistance to aggressive chemical environments. But this ailment bypasses polyester, which has increased strength. Please note that roll-type waterproofing can be used with a coated type at the same time, which increases both waterproofing and durability in general.

We prepare the surface. As a result, it should remain dry, leveled and cleaned.

We apply bituminous mastic on the surface.

Then, using fusing, we apply roofing material on the foundation, which has already been treated with bituminous mastic.

There should be an overlap of about 15 cm at the joints of the rolled sheets, and there should also be processing using a gas burner.

Roll-type waterproofing is suitable for both strip foundations and monolithic ones. Consider the features of applying vertical waterproofing, and horizontal.

Roll waterproofing technology

In order to make the waterproofing of a monolithic-strip foundation with your own hands, it is necessary to apply the above methods. In this case, the sprayed method of isolation from moisture is also suitable.

Spray-type waterproofing is in itself an innovation in the modern construction industry. This insulation perfectly withstands all the obligations assigned to it, and is also applicable to all types of foundation. It is used in the repair of old waterproofing layers, at the time of roofing, etc. This type of waterproofing has many advantages, there is only one drawback - the material is very expensive.

Durable;

High adhesion;

Easy to apply;

Seamless;

Hardens quickly;

Eco-friendly and non-toxic;

Resistant to UV radiation.

Elastic.

We clean the surface and treat with an antiseptic. Using a sprayer designed for this purpose, we apply a waterproofing coating without seams. There is a need for additional surface reinforcement with geotextiles.

One of the most effective and, at the same time, expensive ways of waterproofing a tape-type foundation. The building material used in this method is usually made from cement, various additives and quartz sand. The method of applying this waterproofing is similar to applying plaster. It should be borne in mind that on the building materials market there are compositions that are applied by spraying, and also building materials that are applied by coating.

This waterproofing forms special crystalline elements in the voids of concrete surfaces that repel any liquid, even chemical.

The scope of penetrating waterproofing is very large. This individual is used for waterproofing foundations of all types, including the tape type. And also, water tanks, basements, basement floors, and other concrete structures.

Waterproofing of the horizontal type, also called "cut-off". It protects the walls of the foundation from air suction. And, as a rule, it is located higher than the height of the splashing of moisture, but not less than 30 cm above the ground.

Penetrating waterproofing

The waterproofing of the foundation is done already at the time of its construction. Otherwise, this work is hard and costly. It is not easy to dig out the foundation, clean it and process it properly. Especially if he has stood in the ground for several years and is pretty saturated with moisture. To do this, as follows from the above, only in the summer, or another "dry" day. It is necessary to act step by step, not in parts. As for example, dug out the side - processed it, it won't work. A different degree of strength and drawdown is formed as a result. Waterproofing should begin, in this case, from the corners of the foundation, ending with walls.

Regarding the moisture insulation itself, a combination of vertical and horizontal waterproofing would be an excellent solution. It is necessary to make a horizontal waterproofing first, and only then apply a vertical layer.

Having dug out the foundation, the next stage begins, cleaning the foundation of the house from various dirt without using water. Use brushes, whisks and other tools, but without water. Eliminate residual dirt from the joints, as well as the recesses of the foundation.

Pits, seams and recesses of the concrete surfaces of the foundation must be filled with a special solution of cement, or tile (tile) glue, then treated with bituminous mastic.

Attach the roofing material using welding. A gas burner will help you with this again. Then, having rammed the mastic and roofing material, attach the rolled building material to the surface of the foundation. When working, carefully press all materials. The first layer must be applied horizontally. Overlap each subsequent strip with respect to the previous one.

The next layer must be applied vertically, with an overlap. Remember, tamping the roofing felt sheets perfectly helps it to adhere as tightly as possible. Please also note that the corners of the foundation of the building must be wrapped with rolled building materials, but in no case should they be cut off.

When using waterproofing building materials, it is necessary to make / install a drainage system to drain water, as well as fill the blind area.

There is a not entirely correct opinion that during the operation of the foundation, no changes affect it. It does not rot, decay or rust. On the one hand, this is true, but all this is possible thanks to the high-quality protection of the foundation. What is included in such protection? Waterproofing.

It's no secret how liquid can negatively affect concrete. Without waterproofing, the plinth will collapse, which reduces the life of the entire house. Yes, and groundwater can also harm the foundation. This article is devoted to the issue of waterproofing a strip foundation. You can do all the work yourself. We will consider suitable materials and technology for working with them. And thanks to the comparison, you can make a choice.

Coating material

A fairly common material for waterproofing. The work is quite simple, according to the principle of applying paint. It is enough to apply the material to the waterproofing tape, completely covering the surface of the finished foundation with it. As a coating waterproofing, all kinds of bituminous mastics are used, in cold or hot form, liquid glass, etc.

Material advantages:

1. Low cost.
2. Excellent elasticity.
3. No seams.
4. High hydrophobicity after coating.
5. Ease of work. No complicated equipment is required, as well as professional skills.
6. High level of adhesion to the concrete surface.

Material disadvantages: Short service life. After 6 years, the applied mastic will become brittle and inelastic. Cracks form on the surface through which water can seep. The solution to the problem is repair work and re-coating with a layer of mastic.

Due to the cheapness, once every 7-8 years it is possible to make repairs. But, there is another solution - materials with inclusions of such components as polymers, rubber and latex. Thanks to them, adhesion improves, the level of elasticity becomes even higher, and the period is extended.

The matter is quite simple. To begin with, preparatory work is carried out: the surface of the foundation is cleaned of debris, dust, dirt, etc. Then the foundation must be treated with a deep penetration primer to ensure better adhesion. After waiting for drying, it remains to apply waterproofing to the foundation, leaving no untreated places. You can apply the mixture with a paint brush - maklovitsa.

Additionally, watch the video, which shows the waterproofing of the strip foundation with your own hands.

roll material

Another inexpensive option that is widely used in construction. A clear representative is roofing material, which is used for waterproofing strip foundations. In addition, you can choose from aquaizol, isoelast and other roll building materials.

They are widely used in construction, from foundation and roofing work, ending with the construction of pools and road surfaces. They are suitable for protecting concrete from high groundwater pressure. If the house is without a basement, then the strip foundation is waterproofed horizontally and vertically.

There are several types of rolled waterproofing materials:

• gluing, which are fixed to the foundation surface with bituminous mastic or other composition with adhesive characteristics. Some materials have a self-adhesive layer, which is very convenient;
• surfacing, applied by fusing to the surface. The burner heats up the layer, which becomes sticky when heated.

Material advantages:

1. Ease of installation.
2. Long service life.
3. Excellent water repellency.
4. They have high mechanical strength.
5. Reliability.

Foundation coating technology

1. Surface preparation: clean, dry, even.
2. Applying bituminous mastic to the surface (if it is self-adhesive or welded material, then the roll is immediately glued to the base).
3. Ruberoid or other material is glued onto the prepared base.
4. It is important to make an overlap at the joints equal to 15 cm. “Solder” the joints with a gas burner.

Spray material

Considered innovative technology. The peculiarity is that it successfully performs all the functions and stated requirements. You can use the method for any type of foundation. You can not only do work from scratch, but also repair the old waterproofing coating. Used for both foundation and roofing work.

Material advantages:

1. Long service life.
2. Ease of work.
3. No seams.
4. Hardens quickly.
5. Non-toxic and safe for health.
6. Resistant to UV rays.
7. Elastic.

There are a lot of advantages, and only two drawbacks - the cost and technological equipment for work.

Foundation coating technology

1. Surface cleaning.
2. Applying the material with a special sprayer using a seamless method.
3. Surface reinforcement with geotextiles.

penetrating material

It is considered the most effective and expensive way to waterproof a strip foundation. Usually a penetrating mixture is made on the basis of cement, special additives and quartz sand. According to the principle of application, the process resembles plaster walls. But, you can also purchase material applied by spraying or smearing. After application, crystals are created in the concrete voids that repel the liquid, preventing it from penetrating inside.

Material advantages:

1. Versatility and ease of application.
2. High quality waterproofing.
3. Durability.
4. No seams.
5. Health safety.

The technology of applying penetrating waterproofing to the foundation is described in this video.

Some features of base waterproofing

It is logical that it is better to protect the base from liquid even at the stage of its construction. Then it's much easier to do it. If, for some reason, there is no waterproofing, and the building is already standing, or you just need to make repairs, then the process is not easy. You will have to dig the foundation, but do the work in stages so as not to disturb the structure. Start working from the corners of the building, finish with the walls of the foundation.

Advice! If we talk about the material itself, then ideally combine vertical and horizontal insulation (when the first layer is applied in a vertical position, and the second in a horizontal position).

After the foundation is dug out, you need to clean it from the soil (you should not use water). A brush will come in handy. The surface must be perfectly clean, without inclusions. All pits, cracks and seams are filled with cement mortar and bitumen. Now you can perform waterproofing in your chosen way. So, you can protect your foundation from the negative effects of water.

After completing all the work, the base is buried back. It is important that everything is dry before then.

Conclusion

Waterproofing the foundation with your own hands is a very real goal. If you follow these instructions and carefully follow the process, then you will succeed! Do not be afraid to take on such work, although it is responsible, it is not fearful.