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Waterproofing and diffusion polymer membranes: correct selection and installation. Polymer waterproofing. What is cement waterproofing, main types: coating, polymer, methods of application Rules for applying polymer waterproofing

Application of high-quality hydro insulating materials, selected in accordance with operating conditions, increases reliability and reduces the cost of maintenance and repair of buildings, highways, engineering infrastructure and utilities. Therefore, polymer waterproofing, which is sold by the MPKM company, is in demand and is widely used in the construction industry.

Depending on the range of tasks being solved, elastic polymer waterproofing can be used as an independent waterproofing material or as an additional means that increases the reliability of other methods of ensuring concrete waterproofing. Various brands and polyurethane-based compositions can protect building structures not only from water, but also from chemically active and aggressive substances, the impact of which causes the destruction of reinforced concrete structures.

Advantages of polymer waterproofing

The effectiveness of waterproofing materials containing epoxy resins and polymer additives, is due to the chemical resistance, durability and elasticity of the film that is formed when protective compounds are applied to the substrates.

• Elasticity allows you to partially compensate for the deformation of the base, so the polymer film of waterproofing always remains intact and airtight.
• Polymer-based materials have good adhesion to concrete, brick, cement plaster, tiles, metal and other materials. They can be applied to absorbent and non-absorbent substrates. The waterproofing layer can serve as a base for shotcrete or finishing materials.
• Polymer waterproofing of concrete allows surface treatment complex shape. The coatings exactly follow the contours of the base and do not have seams that reduce the effectiveness of protection.

Polyurethane-based materials are very technologically advanced. They are quickly applied to previously prepared substrates: liquid polymer waterproofing using spray guns or special equipment for spraying two-component compositions, and paste mixtures using ordinary brushes, brushes and rollers.

Supply of polymer waterproofing materials

The MPKM online store offers wholesale prices for construction chemicals, Sika, and other manufacturers with fast delivery of products to all regions of Russia. Employees of the technical support department provide free consultations on the selection of polymer waterproofing for floors, walls, foundations, technical tanks and other tasks. Advice from an experienced specialist will help you buy waterproofing materials, which are optimally suited for certain operating conditions and correspond to the characteristics of a particular object.

Not a single construction of a residential building or institution, not a single interior design is complete without the use of waterproofing. The wide range of waterproofing compounds offered will allow you to easily choose what you need. One of the widely used compositions is polymer waterproofing.

Peculiarities

Polymer waterproofing mostly consists of bitumen emulsion, which contains latex particles. The choice of this waterproofing solution on the shelves of construction stores is huge. Composition may vary. The contents of the composition are directly influenced by the manufacturer and purpose of the solution.

Do not forget that a certain air temperature can affect insulating compounds. This provokes polymerization. As a result, a strong and viscous membrane is formed. Its characteristics satisfy all requirements in the process construction work.

Advantages and disadvantages

The use of a polymer base as insulation has many advantages. By correctly selecting the waterproofing composition and the specifics of its application, you will receive a surface with moisture-repellent properties.

In addition, there are a number of positive aspects that are worth considering in more detail:

• Today, up to 400% elasticity can be achieved from a polymer base.
• The service life of the resulting waterproofing surface can range from 25 to 50 years.
• Guarantee of possible water ingress eliminates the presence of formation monolithic coatings, in which there are no joints.
• This material makes it possible to use it for any type of structure, including a complex or non-standard configuration, and even in the presence of relief.
• Polymer waterproofing is one of the most durable compounds, which is unshakable to any kind of mechanical, chemical, ultraviolet and temperature (from -60 to +110 degrees) influences.

• High wear resistance of the composition. The polymer base is characterized by the creation of a layer that subsequently does not become thinner, while remaining a reliable and uniform coating, regardless of the conditions and period of operation.
• Economical consumption of material is achieved by the insignificant thickness of the coating of the polymer composition. This is quite enough to create durable waterproofing.
• Creates adhesion to a variety of materials such as concrete, metal or wood, as well as many different types of finishes.
• This waterproofing composition is easy to apply. In this case, it is possible to select the required application technology depending on the presence or absence of certain skills and knowledge.
• The time required for the waterproofing composition to harden is minimal, which has a beneficial effect on the overall progress of construction work.
• The absence of toxic fumes and toxic substances in the composition guarantees the safety and harmlessness of the polymer base.

• The insulating coating is highly repairable. In other words, if any defect occurs on the surface of the polymer composition, it is quite easy to restore it. To do this, you will need to apply an additional layer to the existing one around the entire perimeter or in the required area.
• The polymer composition has vapor permeability, which is one of the fundamental qualities in order to create a comfortable microclimate and protect certain building materials from the adverse effects of water.
• A huge range of color shades of the polymer composition will allow you to use this composition as a finishing decorative material.

Like any product, a polymer waterproofing composition has disadvantages, of which its high cost can be particularly highlighted. The composition is much more expensive than its analogues, such as roofing felt and bitumen. But it is worth noting that the quality of the resulting coating fully justifies the high cost.

The advantages and benefits of this option will be recognized by reducing financial costs for additional repair work and replacing a lower-quality waterproofing coating.

Types and selection rules

A wide range of waterproofing polymer bases can confuse consumers, and therefore it is recommended to familiarize yourself in advance with the variety of insulating compositions offered by manufacturers.

There are several criteria that will help you choose the right material that meets all your requirements and wishes:

• Density. The consistency of waterproofing, which is based on polymer solution, is usually divided into liquid and semi-liquid composition. It is worth noting that there is an alternative in the roll membrane format, which is not inferior liquid foundations, however, it is in little demand among consumers.
• Function. Today, the manufacturer is developing a huge range of models for its branded line. Each product is necessarily produced with recommendations for application and an indication of the specific structural element of the structure for which it is intended (roof, floor surface, foundation or metal structures).
• Components included. The elements used and their combination divide the polymer waterproofing composition into several types. The most popular today are cement-polymer and bitumen-polymer compositions.

• Application technology. The application technology is influenced by several aspects, including the availability of experience with waterproofing work, the available time frame for completing the work, as well as the presence or absence of the necessary tools. In this connection, it is customary to divide it into the following types composition: coating polymer waterproofing, liquid, homemade solution (based on epoxy resin). Waterproofing polymer compositions produced for self-preparation require strict adherence to the recipe specified by the manufacturer. Also, do not forget that it is necessary to strictly follow the deadlines for working with the polymer composition, otherwise there is a high probability that the composition will harden while still in the preparation container. Such quick-hardening compositions will cost you less if the work is carried out by a person with special skills and knowledge necessary equipment. To carry out construction work yourself, it is recommended to purchase a more expensive and ready-made waterproofing composition.

Waterproofing work using a polymer base is not limited to its intended purpose. For example, it is often used for above-ground and underground structures, hydraulic installations, and wet rooms. Elastic polymer-cement two-component waterproofing is most often performed in mixtures. Sprayed waterproofing also has good reviews.

Specifics of application

As when working with other waterproofing compounds, the process of applying polymers is carried out in several stages:

• decide on the type of polymer composition that meets all your wishes and requirements;
• make sure you have purchased the required amount of the mixture;
• prepare the surface for further finishing work;
• treat all necessary structural elements with a polymer composition, following the manufacturer’s recommendations;
• wait until the surface hardens completely.

Before proceeding with the actual waterproofing procedures, it is recommended to choose the optimal application technology for yourself. To do this, it is necessary to assess the availability of experience or knowledge, budget, technical equipment and other factors characteristic of construction work.

So, there are two ways to apply polymer waterproofing:

• coloring– to carry out this procedure, it is recommended to purchase a paint brush and roller in advance;
• atomization– this technology will require an airless pumping unit.

The first application option is designed to perform waterproofing work for a spacious room or large structure.

When deciding to carry out the waterproofing process as quickly as possible, spraying technology will suit you. For correct execution process you need to follow a simple algorithm:

1. Prepare the airless pumping unit. Make sure the equipment is complete.
2. Prepare non-concentrated calcium chloride. If you purchased a ready-made solution, fill the container with it.
3. Connect the container to the airless pump unit.
4. Also connect a container with a polymer composition for waterproofing.
5. Next, spray the mixture onto necessary elements structures or surface.
6. Make sure that when spraying, two containers are working simultaneously, since the compositions must be mixed.
7. Ultimately, you should get an even layer, the thickness of which will be from 2 to 4 millimeters (depending on the design configuration), so try to direct the stream in such a way as to achieve this result.

A budget option for waterproofing will be the coating application technology. Using a similar method, you have the opportunity to perform high-quality waterproofing of a small space or individual structural elements, while the consumption of the polymer composition will be minimal.

Let's take a closer look at the stages of waterproofing work:

1. Purchase and prepare the necessary tools. The choice in favor of a fine-pile paint roller or wide brushes will depend on what type of structure you are processing.
2. Dab the lint of the roller or brush into the waterproofing polymer compound.
3. Paint all necessary areas, trying to cover the surface so that the coating is two to four millimeters thick.
4. Wait until the surface is completely dry.
5. Repeat the procedure by applying another layer.

If it is important for you to obtain a uniform and smooth surface, a building level will help you check the quality of the work done. Thanks to it, you will be able to identify all the defects that have arisen.

When using any material and, in particular, a waterproofing composition, it is recommended to prepare the base - the surface - in advance. To do this, you will need to mark areas that are more susceptible to moisture. It is worth noting that waterproofing is applied to the lower area of ​​the wall surface and floor. They should be cleaned in advance of dust, cracked plaster and large irregularities, which are recommended to be smoothed before applying the polymer base.

In the recent past, bituminous materials were used to protect building structures from moisture. They did not provide sufficient reliability and their service life was limited. Now a more effective alternative has appeared - elastic polymer waterproofing. Let's talk about its properties and application features.

What is polymer waterproofing?

The category of polymer waterproofing includes a wide range of materials with a diverse composition, physical and chemical properties. But they all contain high-molecular compounds - polymers, which give them special characteristics. The method of application is also common: most of these compositions are intended for coating insulation. Most common polymer materials on a bitumen and cement base.

Advantages of polymer waterproofing

There are many polymer-based formulations, and they all have different positive qualities. But in general, we can highlight the following advantages of using this type of insulation.

• High degree of moisture protection. For example, in the case of cement mixtures, the addition of polymer components helps solve the problem of pores through which moisture can seep. Polymer waterproofing forms a continuous waterproof layer, while the base retains the ability to pass air.
• Good adhesion to the surface being treated. For each type of building materials you can find the appropriate composition. For example, waterproofing brickwork is best done using polymer-cement mixtures, and bitumen-polymer mastics are also suitable for concrete. Unlike roll coverings, the water-repellent layer obtained using these materials is inseparable from the surface.
• Resistant to any weather factors (temperature changes, ultraviolet radiation, precipitation), water pressure, and aggressive chemicals. This allows the use of polymer insulation for both internal and external work, including for the protection of buried structures.
• Elasticity. For some types of materials it reaches 400%. Thanks to this, polymer-based waterproofing is strong in tension and bending, and can withstand deformation loads well (including during soil movements and thermal expansion of structures).
• Polymer waterproofing fits well on any surface
• Flexibility. Elastic coating compositions can be applied to surfaces with any relief; they are easy to use in hard-to-reach places.
• Fluidity characteristic of many types of polymer waterproofing. Composition, viscosity almost equal to water, fills even invisible pores and microcracks. This ensures absolute waterproofness.
• Long period of operation. While conventional bitumen coatings age, dry out and crack over time, polymer-based materials last an average of 25 years.
• Wear resistance. Even with prolonged use, the waterproof membrane does not lose its qualities, does not wear out or become thin.
• Economical. The material is applied in a thin layer and does not require much consumption.
• Safety, absence of toxic components in the composition.

What types of polymer waterproofing are there?

Materials are classified according to different criteria: by composition, by purpose, by method of use. Below we will discuss the main types of elastic polymer waterproofing.

Polymer-based insulation can have different consistencies.

As a solution consistency

Polymer-based elastic coating compounds are a ready-to-use mixture or require dilution (with water or a special liquid). The result is a solution of varying degrees of viscosity - from liquid to paste.

For appointments

Polymer waterproofing has a wide range of applications, which is due to the variety of materials and their universal characteristics. Manufacturers are striving to expand product lines by producing mixtures for various purposes. Some of them are used for roofing works, others - to protect the foundation from groundwater, others - for the floor, etc. Also, depending on the purpose, mastics and sealants are distinguished. The first are intended for large-scale work, the second - for sealing cracks, seams and other areas of local violation of the hydraulic barrier.

In the form of component composition

In terms of composition, polymer waterproofing is represented by two large groups - materials based on bitumen and cement. The most commonly used additives are polyurethane, acrylic, epoxy resins, rubber, and mineral components. With their help, mixtures are given the necessary properties: plasticity, fluidity, frost resistance, the ability to quickly harden, etc.

In the form of application methods

The technology for installing elastic polymer waterproofing depends on the consistency of the solution. Viscous compositions are applied with a spatula, semi-liquid and liquid - with a brush or roller, as well as by spraying. Depending on the scale of the work, the experience of the craftsman and the availability of professional equipment, manual or mechanized methods are used.

It is also important to take into account the peculiarities of preparing the mixture. One-component polymer insulation is ready for application; two-component compounds are mixed in the proportion recommended by the manufacturer. Polymer cement mixtures are supplied in powder form, which must be diluted with water.

Where is polymer waterproofing used?

Elastic polymer insulation is often used to protect roofs.

Polymer-based waterproofing is used almost everywhere in cases where it is necessary to protect structures from the destructive effects of moisture. The main area of ​​application of materials is construction. They serve to protect the above-ground and underground parts of buildings:

• roofs;
• walls (inside and outside);
• foundations;
• basements and ground floors;
• rooms with high levels of humidity (bathrooms, toilets);
• balconies and loggias.

Also, with the help of elastic polymer waterproofing, garages, parking lots, swimming pools, reservoirs, bridges, roads, and hydraulic structures are protected.

Existing application methods

When choosing an application technique, first of all, the volume of work is taken into account. In private construction and renovation, they usually deal with small areas. To install polymer insulation in this case, you need the simplest tools - a paint brush or roller. The viscous composition is applied with a construction spatula. These works can be performed independently, without the involvement of professional labor.

Liquid insulation is applied by spraying.

In industrial construction, as a rule, a mechanized installation method is used. Liquid mixtures are sprayed airless using a pump unit.

Technology of applying polymer waterproofing

Elastic polymer waterproofing is generally easy to use, but to obtain a high-quality result, you must strictly follow the technology. The process can be divided into several stages.

• Selection of material. In this case, it is necessary to take into account the properties of the treated surface, the technical condition of structures, operating conditions, factors external environment. Often, professional advice is needed for proper selection.
• Calculation required quantity mixtures based on consumption data and insulated area.
• Surface preparation.
• Preparation of the solution, if necessary according to the technology.
• Application of the composition.

When working with some materials, you need to wait until the waterproofing fully develops its properties.

Material selection

When selecting a material, you should focus not only on its characteristics, but also on the manufacturer. The important criterion here is the ratio of price and quality. If the budget is not limited, it is recommended to pay attention to the products of well-known brands that have long established themselves in the Russian market. Bitumen-polymer mastics are produced under the brands TechnoNikol, Bitumast, Ecomast. Among the cement mixtures, the products of the brands Ceresit, Osnovit, Lakhta, Mapei are well known. Among epoxy-based materials, it is worth mentioning Masterseal from BASF and the more affordable domestic brand Blokada.

Calculate the solution consumption used

Polymer insulation is applied in a thin layer.

The calculation of the material depends on its consistency. Liquid waterproofing based on a polymer is applied in a thin layer, so a smaller amount of solution is required to achieve the desired result. The exact data is indicated by the manufacturer on the packaging, but the average consumption is 1 kg per 1 m2 of surface. This implies that the material is applied in one layer with a thickness of no more than 2 mm.

Preparatory work

Before applying elastic polymer waterproofing, you need to carefully prepare the base: the quality of adhesion of the material to the surface depends on this. The work is carried out in stages:

• the base is cleaned of debris and dust;
• remove irregularities, protrusions, sagging concrete, smooth out sharp corners;
• if necessary, the surface is leveled with cement mortar;
• remove dust again;
• apply a primer or primer.

Spraying waterproofing

An airless spraying unit is used to apply insulation.

Elastic polymer waterproofing is applied using an airless spray system. Contact with air is unacceptable, since this will cause the mixture to harden prematurely. Although it is possible to rent a pump, it is best to leave the spraying job to those who know how to handle it. Moreover, some materials are demanding when choosing equipment, and not every installation is suitable for their application.

Before spraying polymer waterproofing, weak areas of the surface are reinforced. These are primarily corners, joints and junctions of structures. Geotextiles are used for reinforcement.

Two-component polymer waterproofing is mixed during the application process. Containers with compounds are connected to pumping unit. When spraying, make sure that the contents of both tanks are used evenly.

The polymer base used in coating waterproofing

Viscous polymer materials are not suitable for spraying; they are applied in another way. Such elastic waterproofing is called coating. Its installation is carried out manually, without the use of special equipment.

When using dry cement powder, the solution is prepared immediately before application in an amount no greater than can be consumed in one hour.

Conclusion

Polymer waterproofing is an effective and durable protection of any surfaces from moisture. Depending on the properties of the base, materials based on cement or bitumen are chosen. Before using the composition, carefully read the instructions.

Cement waterproofing provides protection for various structures from moisture. Materials of this group are often used due to many advantages. Proper mixing of components ensures high reliability and increases the service life of the coating. There are different types of cement-based mixtures. When choosing, their composition and properties are taken into account.

Peculiarities

Waterproofing mixtures are used to protect various surfaces from water: floors, walls and ceilings, seams, etc. Cement-based materials have become widespread. This is due to its reasonable price and relatively simple use.

Although cement absorbs some moisture, mixtures containing this component provide high protection against water. At the same time, there are no contradictions in properties, since in the manufacture of cement-based waterproofing, special additives are used that repeatedly improve the characteristics of the material.

For waterproofing surfaces, compositions containing prestressing cement are used. It is distinguished by increased strength and resistance to cracking. Compared to other brands, this cement absorbs moisture minimally. The use of hydrophobic additives and plasticizers helps to increase resistance to water and enhance reliability by increasing the plasticity of the mixture.

Waterproofing is applied in a layer of significant thickness, due to which the structure being treated is better protected. The principle of application is similar to the method of using plaster mixtures. Thanks to the waterproofing layer, condensation does not form, which gradually destroys the structure and cladding. As a result, the fenced surfaces retain their attractiveness longer and also last a long time.

Advantages and disadvantages

Positive traits:

• wide range of applications: protection of foundations, fencing of single-story and multi-story buildings, waterproofing of swimming pools and tanks in contact with water, preparation for cladding of bathrooms, balconies, application to structures that are exposed to a significant load of water under pressure, when premises are flooded;
• high degree of protection from moisture, cement-based waterproofing can be used in any conditions, even the most difficult;
• simple principle of application;
• the possibility of application to a moistened surface, which is due to the presence of cement in the composition, the adhesion of which only increases if the humidity of the enclosed surface is first increased;
• providing protection against corrosion;
• no chemical reaction upon contact with aggressive media;
• resistance to low temperatures;
• vapor permeability;
• absence of harmful components.

Such mixtures have few disadvantages. They note the possibility of application only to structures that have already gained strength. In addition, cement-based waterproofing materials provide a high degree of protection, provided that several layers of material are applied to the enclosed structure.

Varieties by composition

When choosing, take into account the type of components and the structure of the mixture. The material is selected taking into account the intended purpose of the enclosed structure and operating conditions. Waterproofing must correspond to the temperature conditions at which it will be applied and serve in the future. Violation of this condition will lead to the gradual destruction of the protective layer.

Cement-sand waterproofing

The composition is produced in the form of a dry mixture. This is the simplest type of waterproofing in terms of properties, which is due to the use of cement as the main component. The mixture is quite hard; during the drying process, the protective coating should be moistened frequently - up to 3 times a day for 2 weeks.

For application, it is recommended to use the method of spraying the composition using special equipment. Main special purpose cement-sand mixture— protection of the monolithic foundation of objects. If you plan to apply waterproofing yourself, you need to add special additives to increase the density of the composition. Without them, the service life of the waterproofing will be shortened, and the coating will not perform its functions.

The mixture is applied sequentially several times. When the work is completed, it is recommended to protect the enclosed structure from possible damage while it dries.

However, the surface of the waterproofing layer can still be deformed. In this case, moisture evaporates unevenly, which leads to a change in volume with different intensities.

With added latex

This composition ensures the plasticity of the material. Latex increases the resistance of waterproofing to cracking. The material withstands the effects of temperature changes and low values ​​of this parameter much better. As a result, the cement mixture resembles liquid rubber in appearance and properties. After applying the material, an impermeable coating is obtained that reliably protects the enclosed structure from moisture.

You can add latex to the cement mixture yourself, observing the proportions. However, it is much easier to use a ready-made mixture.

Mandatory conditions when working with such material:

• using the shotcrete or spraying method on a surface that has previously been carefully prepared;
• the mixture should be hot.

The result is a seamless coating that does not allow moisture to pass through, does not crack, is resistant to mechanical stress and lasts a long time, and also withstands high temperatures.

With liquid glass

This component is added to the cement mixture, which improves the properties of the rigid cement-sand mortar. Most often, the material is used to protect foundations, basement floors, and to form fire-resistant coatings.

Advantages of compositions based on liquid glass:

• protection from high temperatures;
• high adhesion;
• manifestation of antiseptic properties;
• absence of toxic components in the composition.

Different ways to use:

• liquid glass is applied to seams, joints, cracks, this option is used as an auxiliary measure; after applying waterproofing of this type, roll material is also used;
• Liquid glass is used as the main component of a cement mixture intended for pouring a foundation.

Cement-polymer

The composition includes Portland cement, sand, plasticizers. Cement-polymer waterproofing has improved properties. The main advantage of this material is considered high stability to tensile and tensile loads. This is due to the formation of molecular bonds when combining polymer components and cement. As a result, the enclosed structure can withstand dynamic loads well and is resistant to cracking.

There are different types of polymer cement mixtures:

• waterproofing glue;
• waterproofing.

There are one- and two-component formulations. Moreover, the second option is more common. It consists of acrylic emulsion and microfiber. This material is used when there is a high risk of exposure to deformation loads (cracks of more than 1 mm are formed). In other cases, dry one-component mixtures can be used.

Types of compositions by method of application

The materials differ in structure and method of application. The choice is made taking into account the condition of the enclosed structure. Penetrating compounds are preferable for use on surfaces that are porous. Coating-type cement waterproofing, plaster and elastic coating mixture are applied to the surface. Selected species materials are intended only for repair of objects.

Coating

This is the most common mixture; it is used to protect various surfaces during construction and at the renovation stage: floors, walls, ceilings, balconies, bathrooms, foundations, water tanks. Coating waterproofing allows you to create an impermeable layer on the enclosed surface that thoroughly protects from water.

Used for a long period, fills the smallest cracks. This composition can be applied to surfaces made of different materials: drywall, metal, brick, wood, concrete, etc.

Elastic coating

This group includes materials containing plasticizers. These are auxiliary components that are used to increase the elasticity of the cement composition. This type of mixture is recommended to be used to protect surfaces of complex configurations that are prone to the formation of small spider-like cracks up to 0.5 mm wide.

The advantages of elastic waterproofing include increased strength. It is permissible to apply it on the surfaces of: swimming pool, terrace, balcony, water tank. It differs from classic coating-type waterproofing in its high price.

Plastering

This version of the material is susceptible to cracking, so it is not recommended to use it under increased dynamic loads. The surface of the enclosed structure should not be deformed, then a significant duration of waterproofing service is ensured. To improve the properties, it is allowed to add auxiliary components, for example, liquid glass. This type of material has the advantage of being able to level curved surfaces and at the same time provide protection from moisture.

Penetrating

Waterproofing of this type can only be used to protect structures made of concrete and reinforced concrete. This is due to the fact that the composition provides effectiveness provided that the enclosed surface is porous. Waterproofing penetrates into the structure of concrete, upon contact with moisture contained in such material, it crystallizes, clogging the pores.

This prevents the risk of moisture penetration. This composition is used when it is not possible to protect the outer surfaces of the structure using external waterproofing.

Repair compounds

They have a high drying speed. This type of material is recommended for filling seams and cracks. It can be used on different surfaces, including when restoring the foundation. The advantages of this mixture include the absence of shrinkage upon drying.

Water plug

The material is used when it is necessary to quickly restore the integrity of concrete pressure structures. Used for repairing objects made of stone, concrete, reinforced concrete. Available in dry form. Upon contact with water, when a deformed area in the thickness of a concrete or stone structure is blocked by the mixture, the cement composition instantly hardens, forming an impenetrable barrier to water. The advantage of the water plug is its high adhesion to the enclosed surface. It is used even if there is a leak.

Application technology

Instructions:

1. If the base is old, it is repaired: the top layer is removed, cleaned, and leveled using special mixtures.
2. Before applying cement compositions, the surface is moistened.
3. When the excess moisture has evaporated and the enclosed structure is slightly moistened, waterproofing is applied.
4. The work uses a spatula or special equipment to spray the mixture.
5. The material is applied several times. After the first layer is formed, you need to wait 2-3 days, during this period the surface is moistened.
6. For 3 days, until the first layer has dried, apply the next one, and then another. Cement based waterproofing should not be allowed to cover a dry surface.

Manufacturers

To purchase high-quality certified material, consider products from common brands. It should be taken into account that prices vary in Moscow and the regions.

Ceresit CR 65

This is a cement-based rigid waterproofing material. Application area:

• internal and external surfaces;
• structures buried in the soil;
• bath pool and other reservoirs;
• protection of walls, floors and ceilings in rooms with high humidity;
• waterproofing of hydraulic engineering and wastewater treatment facilities;
• protection of various objects from destruction and exposure to low temperatures.

On deformable objects, an elasticizer is added before using the mixture.

Bergauf Hydrostop

Waterproofing belongs to the group of coating-type materials. This is a one-component mixture, applied with a thickness of 1-5 mm. It gains strength after 28 days and is resistant to bending and compression loads. The composition can be used in conditions of high and low temperatures: -50…+70°C.

Cement NC

Tensile cement belongs to a separate group of materials, because it has a high linear expansion rate, does not shrink, and does not deform. This is the most durable substance, and also outperforms Portland cement in terms of moisture resistance. The material contains almost no pores, so it protects well from moisture.