Cement waterproofing provides protection various designs from exposure to 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. Exist different types 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 treated structure 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: foundation protection, 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 comply 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 protective covering should be moisturized 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. The main purpose of the cement-sand mixture is to protect 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 the foundation, ground floors, for the formation of 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.
- 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 to be high resistance to tensile and tearing 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 contains 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:
- If the base is old, it is repaired: the top layer is removed, cleaned, and leveled using special mixtures.
- Before applying cement compositions, the surface is moistened.
- When the excess moisture has evaporated and the enclosed structure is slightly moistened, waterproofing is applied.
- A spatula or special equipment is used to spray the mixture.
- 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.
- 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 and 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.
All structural elements of a house or apartment require reliable protection from high humidity. Why is waterproofing needed?
In a room located above a damp basement, moisture destroys the concrete of the floors. High humidity causes mold to grow in wooden coverings and rotting begins. IN multi-storey buildings on the middle floors, when moisture penetrates through cracks at the joints of the floor, carpet, laminate, parquet, bamboo lose their original appearance and become unusable.
Waterproofing the first floor of a private house that does not have a basement or floor in the country house will extend the life of the building. Water vapor rising from the ground can be acidic or alkaline.
Interacting with concrete, moisture can destroy it completely in a few years. Waterproofing the floor will help you avoid such problems in your home, increase the safety of its operation, and improve comfortable living conditions.
Materials
Depending on the purpose, conditions of use of the room, the condition of the subfloor, and financial costs, various materials are used for waterproofing, which protect it from destruction. All types of waterproofing comprise two main groups - for external and internal work.
According to the main composition of the water-repellent component:
- bitumen – based on mineral components;
- polymer;
- bitumen-polymer.
Based on the method of application to surfaces, the main types are distinguished:
- roll;
- film;
- penetrating;
- membrane;
- painting;
- pasting;
- coating;
- powder;
- plastering.
Roll and self-adhesive waterproofing
They have become widespread for waterproofing floors in apartments and private houses. Roofing felt is still used for waterproofing today, along with roofing felt and glass roofing felt. Cardboard or fiberglass impregnated with a mixture of bitumen and basalt chips. They can be laid to protect foundations, roofs, and floors from moisture. Modern waterproofing materials have additional thermal insulation properties.
Roll waterproofing - membrane (geomembrane). There is a lock at the junction. Additionally, gluing is performed.
Rolled waterproofing materials come in two types: floating and self-adhesive. Floating materials are durable and inexpensive. Their disadvantage: the waterproofing must be installed using a gasoline or gas burner; when heated, they emit an unpleasant odor and harmful smoke. The method is quite suitable for use at the dacha with your own hands when waterproofing the subfloor. Laying roofing felt during waterproofing work requires the installation of an additional screed.
Self-adhesive waterproofing is installed quickly and is easily attached to the base. Which side to lay the self-adhesive material is indicated in the attached instructions. For waterproofing, self-adhesive film made of polyvinyl chloride, polyethylene, and polypropylene is used. Usually pvc film used to create a dry or cement-concrete screed for a concrete floor. Working with self-adhesive film does not take much time.
Penetrating waterproofing
used as the main or additional measure concrete floor protection. Includes subgroups:
- Concreting – increases the density and strength of the material. Placed as an additive to create a reinforcing layer.
- Cement-polymer - used for treating concrete, wood, and brick floors. Polymer waterproofing has high adhesion to the surface, is easy to use, and environmentally friendly. Waterproofing the subfloor can be done with cement-polymer mastic laid on a reinforcing mesh - you get a waterproofing layer and a screed at the same time.
- Cement inorganic waterproofing is used to treat concrete floors.
Ceramic tiles can be easily laid on a layer of penetrating waterproofing. 
Mastics
plastic adhesive solutions based on bitumen, liquid rubber, polymers, resins, plasticizers, and other additives. Mastic solutions are of hot or cold type. Floor waterproofing mastic is used to create a waterproof layer and treat joints in the bathroom, toilet, kitchen, bathhouse, and swimming pool. Mastic displaces rolled materials, since, unlike them, it does not have unpleasant odor, does not form seams that could cause water leakage.
Water-repellent materials
For waterproofing, liquid water-repellent materials can be laid. The composition of the group includes primers, varnishes, paints, impregnations.
Powder materials
for protection against moisture, they are represented by a variety of dry mixtures based on cement, glue, binders, and plasticizers.
Immediately before use, add the dry mixture to the water so that the solution is ready for use. Powder mixtures are used to create flooring concrete screeds, waterproof layer of the floor of basements, swimming pools. It all depends on the chosen material.
Execution technologies
When applying waterproofing, it is important to follow the rule - in places where the floor meets the walls, the waterproofing layer must be raised to a height of at least 30 cm.
Application of liquid waterproofing. Liquid waterproofing for floors, depending on the composition and viscosity of the material, is divided into cast and impregnating.
Polymers and bitumen compositions
Casting – application of polymer or bitumen solutions, which, when hardened, form an even waterproof film. Bitumen solutions are heated to a temperature of 130 - 140 ° C, poured onto a clean floor and leveled with a wide spatula.
This method is used to treat continuous bases before pouring the screed. Waterproofing can be laid in several layers, between which a metal reinforcing mesh or reinforced fiberglass is placed; The thickness of the waterproof film can be 5–15 cm. The base of the floor is impregnated with waterproofing material.
Surface coating involves working with heated bitumen-polymer mastics, cold polymer, rubber-epoxy mastics. Coating waterproofing based on oxidized bitumen is produced with the inclusion of an organic solvent and various fillers. 
Used as additives crumb rubber, plasticizer, latex, which significantly increases the elasticity of the coating and prevents it from cracking. Bitumen-polymer mastics are characterized by high adhesion. Laying waterproofing under a concrete floor with reinforcing fiber significantly increases its strength and abrasion resistance.
A special primer applied before applying the mastic increases the bond of the waterproofing layer with concrete base. Mastic can be sold complete with a primer; they have a common main component. The main advantages of coating materials are cost-effectiveness and ease of application.
Coloring
How to waterproof a floor by painting? Painting is used for floors along joists, for wood or concrete coverings. Polymer or bitumen varnish is used. Depending on the consistency of the composition, it is applied to the surface with a spatula, roller, or paint brush. The layer with this treatment is 2 - 3 mm thick and additionally performs the functions of anti-corrosion and anti-fungal protection. The service life of such protection is 5 years.
Pasting materials
Self-adhesive roll-on waterproofing option
How to properly waterproof a floor using adhesive materials? This method involves laying rolls and sheets of moisture-resistant materials in layers on a previously cleaned and primed base floor.
Types of adhesive waterproofing:
- Conventional flooring on a surface under a cement or dry screed, under a wooden rough covering with a joint or independent method of fastening.
- Fusing rolled material onto the floor gas burner. The method is fire hazardous and requires skills and strict adherence to fire safety rules.
- Gluing using special adhesives and mastics. Many types of modern film waterproofing have an adhesive layer, which greatly simplifies their installation. Melting temperature of mastic on bitumen- polymer based select 20 - 25° above the most high temperature air of this room.
All types of lining materials react to shear, and therefore they are used to protect rigid structures made of brick, concrete, and reinforced concrete from high humidity. This type of waterproofing is also used for wooden subfloors.
Plaster
A simple, environmentally friendly method using various dry cement-based mixtures with the inclusion of binding mineral and polymer additives. The solution fills well any unevenness, cracks, or crevices of the treated surface. The mixture is applied with a spatula or brush.
Mastic and plaster
Mastic for waterproofing floors. Features of working with mastic and plaster.
After applying the self-leveling material, the floor must be in a calm state for the composition to polymerize. The mastic is applied in several layers - in this case, each subsequent layer is applied perpendicular to the previous one after it has completely dried.
Complete waterproofing is ensured when the floor and walls are treated to a height of 10 - 15 cm. Cement-polymer mastics provide water protection and form a self-leveling surface. There is no need to fill the screed. A floor finishing coating is laid on top of the waterproofing.
Backfill materials
Backfill waterproofing is used to protect floors in wet areas. How to lay backfill material? Bulk components are poured into the pre-constructed formwork in an even layer.
Perlite sand, ash, mineral wool, and bentonite are used as fillers. Backfill hydraulic protection has a long service life, but its installation is a labor-intensive and expensive process.
Choice of premises
When choosing a material and method of waterproofing the floor, you need to take into account the individual characteristics of the room’s operation - humidity, the presence of a “warm floor” heating system, the presence of a toilet, a swimming pool.
Work must be carried out especially carefully at the dacha in the garage - a constant excess of moisture will lead to rotting of vehicles. Which waterproofing to choose to protect your garage floor?
The optimal solution is concrete. Waterproofing under a concrete floor - penetrating, impregnation, additives to concrete when preparing the solution. Immediately before pouring concrete, the soil is filled with bitumen; construction clay or rolled material - a geomembrane - are also used.
It is possible to use a combined method of waterproofing - lay the first layer with a roll coating, then seal all the joints that appear and apply a layer of mastic on top.
Preparing for work
Before starting waterproofing work, preliminary measures are taken with the subfloor:
- removal of old coating;
- thorough cleaning and drying of the rough surface;
- sealing cracks and cracked parts of the surface with waterproofing putty.
The main condition for the duration of operation and the effectiveness of preserving the floor from high humidity is right choice material, compliance with installation technology.
The greatest danger to many building materials is water and its evaporation, which accelerates their aging and destruction. To avoid this and extend the life of building materials and buildings made from them, waterproofing is widely used.
There is a wide variety of modern hydro insulating materials, each of which has its own characteristics. One of them, which has become widely known recently, is polymer waterproofing. In most cases, it is based on polyurethane, to which furan, phenol-formaldehyde, urea and other resins are added.
Features of polymer waterproofing:
The scope of application of such waterproofing is very wide. It is used to protect above-ground and underground buildings and structures, hydraulic installations, roofing and floor coverings, walls, foundations, etc.
Moreover, all polymer waterproofing is divided into several categories:
Directions for use
Consistency
It can be liquid or semi-liquid, and according to its component composition – cement-polymer or bitumen-polymer.
Purpose
The first contains Portland cement and synthetic resins, additives and fillers. The finished composition is a fairly plastic mass, similar to plasticine. One of the conditions for the durability of a waterproofing coating made of this material is the absence of particles of dust and debris (this must be carefully monitored during work).
The second is produced on the basis of oxidized bitumen with an organic solvent. In addition, various substances are added to the mixture to improve waterproofing characteristics. It is produced in the form of mastic, which is associated with some of the features of this waterproofing material. So, when drying, it forms an uneven surface, which must be covered on top with a screed (if the floor is insulated) or sheathed finishing material(on the walls).
Application of polymer waterproofing:
Most often, polymer waterproofing materials are used to treat dry surfaces, but there are also those that can be safely applied to wet ones.
However, most formulations are sold in dry form and must be prepared immediately before application. The main condition for this is maintaining the correct proportions and quickly applying the compositions, since the “lifetime” of many of them is only a few hours (and sometimes minutes).
In addition, polymer waterproofing is, as a rule, very toxic and fire hazardous. Therefore, when working with them, it is important to strictly follow safety rules. True, at present manufacturers are already producing practically harmless compounds that can be worked with in enclosed spaces.
Advantages of polymer waterproofing:
The indisputable advantages of this waterproofing material include the fact that it forms a continuous, seamless fabric with high water-repellent properties.
It is durable (warranty is 25 years, but in practice this period is much longer). At the same time, the waterproofing layer does not thin out over time, and remains as smooth and durable as just after application. By the way, the service life of a cement-polymer coating is much longer than a bitumen-polymer coating.
Another advantage is that it is equally suitable for any structure - it can be easily applied even to complex and small, convex and concave elements. The type of surface on which the waterproofing is applied does not matter. It will go well with concrete, block, metal, wood and other types of coating.
Polymer waterproofing is not afraid of ultraviolet radiation, temperature changes, chemical effects of substances and mechanical damage (impacts, scratches, etc.).
It is also important that applying this material is quite simple. This does not require special qualifications or extensive experience. There is also a wide palette of colors.
The only drawback is most often the price of this type of waterproofing. However, as we know, the stingy has to pay more.
Rules for applying polymer waterproofing:
In order for waterproofing to fully demonstrate its advantages, it is necessary to first follow all the rules for its application.
Before starting waterproofing work, it is necessary to prepare the surface by removing all contaminants from it and eliminating unevenness. Some solutions and mastics also require preliminary wetting of the surface with water (these requirements, along with mixing proportions, should be indicated on the packaging). Only after all the preparatory work has been completed can you start mixing the ingredients.
It is necessary to coat the surface evenly, paying special attention to “wet” places (where the greatest exposure to steam or water is expected). After applying the first layer, you need to let the insulation dry and then repeat the procedure.
Polymer waterproofing video:
Waterproofing wet rooms is an important factor in a healthy and comfortable microclimate throughout the living space. This is a barrier to the penetration of moisture from bathrooms, showers and toilets - the most damp rooms in any apartment. Until recently, the most popular and frequently used waterproofing materials were those based on organic components - bitumen and bitumen-polymer mastics. However, modern polymer waterproofing is a much more “advanced” and high-tech material.
What should high-quality waterproofing be like, what criteria should it meet? Its main task is to prevent the penetration of moisture from one room to another. Moisture entering the thickness of the walls destroys brickwork and plaster layer, forms pockets of fungus and mold under wallpaper and putty, spoils appearance repairs and the mood of the owners. Therefore, you need to fight it with all available methods, but it is better to use materials specifically designed for this.
Based on the method of application, waterproofing materials have always been divided into roll and coating materials. The first ones are more difficult to install, and the result was not always reliable - this is already “yesterday”. Materials that are applied to the surface with a brush or roller are much more convenient and reliable. These include polymer-cement waterproofing.
This group of materials is produced on the basis of inorganic substances and has a number of advantages over traditional bitumen mastics.
The materials are produced by many manufacturers who patent their developments and technologies, but in general, cement-polymer waterproofing materials include the same components: Portland cement, fine sand, elasticizing polymer substances. One-component and two-component mixtures are available for sale. The former contain dispersion polymers in the form of powders (DPP), the latter contain aqueous polyacrylic dispersions as an elasticizer.
Ease of application is one of the advantages of polymer-cement waterproofing
Advantages of polymer-cement waterproofing materials
- Waterproofing compounds consist entirely of substances that are safe for health, so they can be used indoors for human habitation.
- Waterproofing based on inorganic materials has a significantly longer service life compared to bitumen. These materials have excellent adhesion to all materials used in construction - concrete, brick, wood, metal.
- Ease of application - cement-polymer waterproofing is applied to surfaces using a regular paint brush. This allows you to efficiently coat the slightest irregularities, since it is clearly visible where the composition was applied unevenly and there are “bald spots” in the layer of material. Repairing the coating is also very simple.
- The waterproofing layer completely blocks the path of water, while allowing water vapor to pass through - the wall “breathes”. This property prevents the formation of air bubbles under the membrane. The main feature of this material is the ability to apply it even to a damp wall; moreover, it is recommended to moisten the surfaces before starting work.
- The resulting layer has high plasticity and resistance to deformation, which eliminates its damage in the event of small cracks forming on the base.
The advantage of polymer-cement compositions is the possibility of application to wet surfaces
Step-by-step guide to moisture protection of a bathroom with polymer-cement compositions
Using this type of material, you can get excellent results. To do this, you must carefully follow the manufacturer's recommendations for applying cement-polymer waterproofing. In general, they are approximately the same, the differences can only be in the numbers - drying time of the layer, thickness, and in the method of preparing the material for work. Before starting work, it is necessary to mark those “wet” areas that will be subject to increased exposure to moisture - walls around the bathtub, washbasin, etc. Be sure to apply the coating to the lower part of all walls (25-30 cm) and the entire floor area.
“Wet” areas of the bathroom require particularly careful treatment.
- Preparation of the base (walls, floor) must be carried out with the utmost care. It is necessary to remove all debris and dirt, dried splashes of mortar. Irregularities are filled with plaster.
- Typically, the manufacturer indicates the need to wet surfaces before applying the composition. If there is such a remark, it is necessary to moisten the base using a regular spray bottle.
- Preparation of the material: mixing all components of the polymer-cement composition in the sequence specified by the manufacturer. The mixture should become homogeneous.
- The composition is applied to all marked surfaces using a hard brush in an even layer. Carefully ensure that there are no “mispaintings”. At the junction of walls and floors, as well as water supply pipes, sewer pipes or risers, it is necessary to lay a layer of construction mesh made of polypropylene, geotextile, etc. material. It is embedded in a layer of waterproofing material and lubricated well.
- The first layer is dried for the time specified in the manufacturer's instructions. It is better not to artificially reduce this period by drying with heat guns or hair dryers.
- Before applying the second layer of material, the surface is slightly wetted again (if recommended by the manufacturer). The second waterproofing layer is applied.
- The surface is dried according to the recommendations of the material supplier, after which it is ready for applying decorative finishing.
The joints between the walls and floor of the bathroom must be taped with waterproofing tape.
Features of polymer coating waterproofing
This group of materials also belongs to modern one-component coating compositions for “cutting off” moisture. They contain acrylic, epoxy or polyurethane resins, which give them very high ductility. Surfactants increase the adhesive properties of polymer compositions for waterproofing works. The resulting layer has high vapor permeability, it is very elastic, but durable, similar to rubber. This material is applied with a brush or roller, and the surface is pre-moistened.
Even though polymer waterproofing for a bathroom is not exposed to the aggressive influence of chemicals, it is nevertheless very resistant to such influences, so it is most often used for outdoor work - for waterproofing swimming pools, sewerage and treatment facilities, etc. Materials intended for indoor use can be made in a wide range color scheme, under the influence of ultraviolet radiation on the street they fade very quickly.
Indoors you can use polymer waterproofing of any color
General recommendations for the use of polymer waterproofing compounds
- When applying any materials, be it wallpaper, paint or waterproofing compounds, preparation of the base is very important. Mark areas on the walls that will be exposed to increased moisture. The lower part of the walls and the entire floor must also be waterproofed.
- The walls and floor must be well dusted, cleared of any build-up of mortar or plaster, and large potholes must be leveled. All debris is carefully removed. The surface must be dry.
- Concrete and metal surfaces are primed with special primers recommended by the manufacturer.
- The composition is applied as the first layer at temperatures above 0 ° C, the exact hardening time is indicated on the packaging by the manufacturer; this is necessary for polymerization of the applied composition. In places where the floor and walls meet, as well as the outlets of risers and pipes, it is advisable to lay a layer of geotextile or polypropylene construction mesh. The material is well coated and embedded in the waterproofing layer.
- After the first layer has hardened, the second one is applied. To make it more convenient to control the uniformity of application of the second layer, it is better to make it in a contrasting color. In places where the bottom layer is visible, after the second layer has hardened, you need to apply the mastic again.
- After the second layer has hardened, the surfaces are ready for decorative finishing.
Polymer waterproofing in the bathroom
In general, the process of applying modern waterproofing compounds is quite simple. However, as in any work, there are a number of subtleties that are familiar only to specialists. To keep your bathroom sparkling clean and the walls of neighboring rooms dry, invite professionals and let everyone do their job!