How to waterproof a bathroom under tiles. Materials and technologies for waterproofing bathroom floors under tiles. The process itself is simple, but requires great care

The bathroom is one of the most complex rooms from a technical point of view. This is where the majority are located engineering communications, they must be provided with unhindered access to carry out regulatory and repair work. In addition, these communications create increased risks of unpleasant situations.

The optimal flooring for bathrooms is ceramic tiles. She has excellent performance characteristics, its use makes it possible to obtain not only beautiful and wear-resistant, but also waterproof coatings. Today on the building materials market there are big choice compositions for waterproofing, they all have excellent physical properties and reliability. But only under one condition – the application technology will be strictly observed.

Table. Which waterproofing materials can be used in bathrooms.

Name of waterproofing	Brief description and properties
	They are airtight coatings, most often used under cement-sand or concrete screeds. These types of waterproofing include polyethylene film. Depending on the characteristics of the material, hot or cold methods can be used for waterproofing.
	Universal use, widely used for waterproofing both horizontal and vertical surfaces. They are produced on the basis of polymers or modified bitumen, and may have additional additives to improve physical characteristics.
	For bathrooms, under tiles are rarely used. They contain polymers that can withstand significant linear vibrations.

General requirements for waterproofing bathroom floors under tiles

Modern construction technologies involve a wide range of applications for waterproofing materials. But professionals advise using them very carefully; sometimes the harmful effects dominate the positive ones. What should you pay attention to when making your final decision?

The bathroom is a room with the most difficult operating conditions. High humidity has an extremely negative effect on all building materials and architectural structural elements. Ceramic tiles are most often used to finish bathroom floors. This material is absolutely moisture-tight; if the installation technology is followed, additional waterproofing is not required. Modern grouts for tile joints are characterized by the same properties. Conclusion - if you laid the tiles correctly and carefully sealed the seams between the tiles, then this is quite enough for normal waterproofing. Why is it still recommended to use it?

To minimize the consequences of emergency water breakthroughs. There are many water pipes, connections, seals, etc. in the bathroom. Each of them can unexpectedly fail, resulting in excessive leaks. Only general waterproofing can save the situation for a while. To do this, the floor in the bathroom must be lower than the floor in the hallway. If this requirement is not met, then flooding of adjacent rooms is inevitable and no amount of waterproofing will help.
While using the bathroom, tiles are sometimes damaged mechanically. Cracks in the tiles allow water to pass through, and this can cause it to penetrate into the base flooring. Optimal solution– timely replacement of damaged tiles. But not in all cases this can be done in the shortest possible time; for the period before replacement, the tightness of the floor is ensured by waterproofing.

This is what current officials recommend doing. regulations. In practice, waterproofing is often used everywhere for only one purpose - to increase the estimated cost of construction. Developers should be aware that applying waterproofing under bathroom tiles without meeting prerequisites is ineffective in terms of protecting structures from moisture. The application of various mastics to the base is not the initial stage, but the final operation in a whole complex of special construction measures to protect structures from moisture penetration.

Step-by-step instructions for applying waterproofing

Before applying waterproofing it is necessary to carry out preparatory work, thereby significantly increasing quality and reliability. As initial data, we take into account that the floor level in the bathroom is lower than the floor level of the adjacent rooms. The screed is made taking into account the requirements of building codes and regulations. For waterproofing, modern cement-based mastic will be used. This material meets existing requirements in all respects.

Step 1. Preparing the base. Very important point, you should not try to save time and do waterproofing immediately on an unprepared foundation.

Important! Before sealing cracks, they should be moistened generously with water. Use a household spray bottle or an ordinary brush for this.

Step 2. Carefully read the instructions for using waterproofing. Prepare your tools. You will need a container for the material, a roller and a brush, a mounting knife, and a drill with a mixing attachment. It is recommended to work with gloves.

Step 3. Proceed to treat the corners and outlets of sewer pipes, if any, in the floor. We have already mentioned that these places require the closest attention. To seal the catch, you need to use elastic tape for the seams. The width of the tape, depending on the manufacturer, is approximately 10 cm, the material is sold in rolls 2–2.5 m long. The tape is made on the basis plastic mesh, this is used when plastering vertical surfaces. A waterproof gasket made of polymers or synthetic rubber is glued to the mesh. Thanks to the use of modern technologies, it is possible to obtain a durable and flexible material with fairly high elasticity. Such indicators allow the elastic tape to compensate for possible surface vibrations without compromising its integrity, which is very important when waterproofing a bathroom under floor tiles.

The tape must be glued in this order.

Measure the distance between opposite walls, make room for hems in the corners. The size of the hem on each side must be at least ten centimeters. Use ordinary scissors or a mounting knife to cut off the excess.

Practical advice! Try to use a whole piece of tape on each wall. Plan your cutting to minimize unproductive material waste. Remember that each additional joint on the tape increases the likelihood of leaks.

When preparing the material, maintain the proportions of water and dry ingredients. You should always pour water into the container first, and then add the dry mixture to it. It is recommended to mix with a drill with a mixing attachment at low speeds; at high speeds, air bubbles are formed. The first mixing time is at least five minutes; this is the only way to ensure the complete disappearance of lumps. After the first stirring, the mixture should sit for 10–15 minutes, then use the mixer again. Apply the mastic very carefully, do not leave any gaps. The length of the prepared area depends on two factors - the drying speed of the mastic and the professional skills of the performer. The first data is indicated on the packaging, and the second is determined by the practical experience of the master.

On a flat surface, fold the tape in half. This is done in order to facilitate its installation in the abutment corner. Apply the tape to the fresh mastic and press firmly into the solution. Be sure to straighten out folds and sharp bends. Don’t forget to make transitions from one wall to another in the corners. Along the edges of the tape there are mesh strips free of fillers; the waterproofing material should appear through them.
After the tape is laid along the entire length of one wall, apply a second layer of waterproofing to it. The rubberized or polymer strip may not close the second time, but this is not a mandatory requirement.

Step 4. Proceed with applying the first layer of waterproofing coating. This can be done with a wide spatula or a hard-bristled brush. The main condition is that the mastic should not only cover the entire surface without gaps, but also rub into it as strongly as possible.

Practical advice! Each manufacturer indicates on the packaging the rate of material consumption per one square meter. As practice shows, actual consumption increases by about 15–20%, keep this in mind when purchasing mastic. Do not allow interruptions in work due to a lack of material; this situation has an extremely negative impact on the quality of waterproofing.

Step 5. After applying the first layer, you need to give it time to set. Most materials require 6-12 hours. Specific parameters depend on the thickness of the mastic, humidity and temperature in the room, the presence natural ventilation. Before applying the second layer, you need to check the hardness of the first. The mastic must be able to easily withstand the weight of a person; deflections and dents are not allowed. If the mastic is not hard enough, then it is strictly forbidden to begin applying the second layer.

It is better to make the movements of the brush during the second application perpendicular to the first, due to this the tightness of the base under the tile is improved. Laying of tiles can begin no earlier than 24 hours after completion of waterproofing work. Tile laying is carried out on all known technology and has no differences.

Waterproofing under the slab with polyurethane mastics

In terms of quality, the materials are not much different from those previously described based on cement, but there are certain nuances in the application technology. Polyurethane mastics create seamless coatings, have universal use and meet the requirements of regulations for the installation of floors in rooms with high humidity. The preparation of the screed surface is the same as for other types of waterproofing. Further work is performed according to this algorithm.

Step 1. Surface primer. A special two-component primer is used. Pour the contents of the small container into a large container and mix the ingredients thoroughly. The drill should have minimum speed and stir until the solution becomes completely homogeneous.

Practical advice! If there are cracks or critical irregularities on the surface of the screed, they can be repaired with a primer. Pour part of the material into a separate container and add dry sifted sand until a thick consistency is obtained. The resulting solution has high mechanical strength and at the same time does not allow water to pass through.

The repair composition is applied to the surface with a spatula; after completion of work to eliminate surface defects, the areas must dry for at least two hours.

Step 2. Pour the primer onto the floor and rub it evenly into the cement-sand screed. The layer thickness is approximately 0.2 mm, divide the bathroom into zones, start finishing the floor from the outer wall and gradually move towards the exit. Do not forget to prime the walls around the perimeter of the bath; the height of the coating should be several centimeters higher than the width of the elastic tape for the seams.

Step 3. Thoroughly mix the polymer waterproofing agent and begin applying it to the coating. It is recommended to work with a roller and brush. Using a roller, smooth areas of the screed are finished, and with a brush, joints and other hard-to-reach places are coated. The consumption of the first layer is up to 700 g/m2, but these figures may vary depending on the specific brand of waterproofing and the actual characteristics of the screed. If your consumption is higher, it’s okay, you need to be wary; if the consumption is much less than recommended, this means that the layer thickness does not correspond to the recommended values.

Step 4. After the first layer has dried, you can begin to finish the surface a second time. The technological break is 4–6 hours, specific values depend on the manufacturer and initial conditions. Prepare the material for use and apply it using the same technology. Some well-known manufacturers produce the same waterproofing material in different colors. Due to this, quality control of coatings is significantly simplified. The first layer is most often black, and the second is any light color. This contrast makes it possible to control not only the gaps of the second coating, but also its thickness. If the black color does not show through, everything is fine. If black color is noticeable in some areas, then it is necessary to increase the thickness of the second layer.

Step 5. Until the second layer of mastic has hardened, it should be sprinkled with dry sifted sand. Sand consumption is 1.5–2.0 kg/m2, fraction size is 0.3–0.8 mm. There is no need to embed sand into mastic.

Step 6. Give time for the mastic to completely polymerize and remove any loose sand from the surface with a broom. The presence of glued sand on the surface of the mastic significantly increases the adhesion coefficient of the coating with tile adhesive. We recommend using this technology in all cases where tile adhesive has direct contact with polymer bases.

Prices for popular types of polyurethane mastic

polyurethane mastic

Probably every person in his life has come across such a concept as repair. It can be either major throughout the entire house or apartment, or cosmetic, when minor changes are made to the finishing of the ceiling, walls or floor. But if the renovation concerns the bathroom, then in this case it is better to resort to a major option and do everything conscientiously, since this room is most susceptible to negative influences external conditions.

There is always high humidity, strong temperature changes, water, which often gets on all surfaces of the bathroom, and the formation of condensation. Poor or incorrect repairs can cause many problems. Therefore, to avoid them, it is recommended to complete waterproofing premises before starting finishing.

Peculiarities

Moisture tends to penetrate everywhere, even into the smallest holes and cracks. And waterproofing serves precisely to prevent such penetration. In the complete absence of a waterproofing layer, mold and mildew may appear, which will lead to a deterioration in the appearance of the finish, its destruction and may even cause various diseases from the residents.

It is best to carry out comprehensive waterproofing of the room - from floor to ceiling. A waterproofed ceiling will prevent water from entering and even flooding from neighbors above. Waterproofing the floor will help save neighbors below from flooding. Treatment of the walls is necessary to protect them from moisture getting under the finishing, fungal compounds do not appear there and the walls do not begin to crack. The cracks that appear in the walls of the bathroom allow cold air to enter, which negatively affects the decoration of the room, as well as the health of the residents of the apartment or house.

Thus, the walls must be protected from moisture, if not completely, then at least where water periodically falls on them.

The following parameters are optimal:

50 cm from both sides of the sink, as well as up from it;
0.5 meters on the sides of the bath, up preferably to the entire height of the wall.

Corners and baseboards are also very vulnerable places in the bathroom. Therefore, when waterproofing the floor, it is necessary to simultaneously cover the walls. The optimal distance would be 30 cm. Also, special care must be taken to waterproof the communication lines.

Kinds

Today there are many types and methods of waterproofing both external and internal parts of premises. In order to choose the right materials for waterproofing a bathroom, you must first thoroughly study all possible materials, and today there are many of them.

The following types can be distinguished:

coating waterproofing;
lining, which includes roll, film and bitumen;
impregnating;
special types of plaster;
waterproof paints;
special rubber-based compounds.

All of the above options are good for resisting water in such a room. But it is necessary to take into account that plastic film cannot be used. It does not allow steam to pass through, which often accumulates in the room, so it will become ineffective and can harm the decoration of the room.

The junctions between floors and walls, bathtubs and walls require careful attention. Special cords, harnesses, and tapes work well here. They are made from special compounds that prevent microorganisms and bacteria from appearing. They are very durable.

It should be noted that if the house is built from wood concrete slabs, then waterproofing the bathroom is simply necessary. Arbolite is a material that has very low moisture resistance. Therefore, mold and mildew very often form on it, and it can also begin to self-destruct. In this it is very similar to a tree.

Several types of materials are suitable for waterproofing this type of room:

Mastics with the addition of polymers and bitumen. They are easy to apply and highly effective. They are very durable. This material is universal in nature and is suitable for the most different rooms. Therefore, it is very popular and in demand.
Impregnating compositions. Must be applied with a roller or brush as they are liquid. They are convenient to use, durable, and also strengthen the building material itself.

Membrane materials. Membranes should be selected very carefully, as they come in many varieties. You need to buy only those options that are designed for indoor waterproofing. Moreover, it is better to prefer not to dense species, since such films are more elastic.
Expanding cement. This material is capable of filling cracks, crevices and holes in any coating, as it tends to expand during the hardening process.
Latex coating. Necessary when finishing surfaces with aqua panels. Helps maintain waterproofing results.

Coating and impregnating compounds are very suitable for waterproofing under tiles. They are easy to apply yourself, without the help of professionals, which will help save money.

IN Lately Finishing panels are gaining popularity that do not allow water to pass through. They are also called aquapanels; they are based on synthetic latex, as well as waterproofing membranes. They are very convenient to use. And they will last for decades. Probably the only drawback of such a waterproofing material is its rather high cost.

Manufacturers

There are many waterproofing manufacturers on the Russian construction market. Among the most popular are the following:

TechnoNIKOL Corporation– a domestic company that produces various types of waterproofing materials;
Aquamast company engaged in production and supply bitumen waterproofing;

"Gidroizol" also has a wide range of waterproofing products;
"Grida" specializes in the production of bitumen waterproofing;
Ceresit can offer the buyer a wide range of quality products;
Knauf is also a well-known company in Russia that produces various types of waterproofing materials.

The choice of companies and their products is very large. The main thing is to decide what materials will be needed for the installation of waterproofing systems.

How to choose?

By by and large, in order to carry out all the work in this room, you can choose any existing materials. The choice may be determined by the preferences of the owner, the funds that he is willing to spend on this event and the service life of this material. This is important due to the fact that such material may deteriorate earlier than the finishing. Then the presence of waterproofing will become useless.

It is good to waterproof a floor under a concrete screed using rolled materials. Coating waterproofing materials are easier to use, but no less high quality. They also work well with penetrating waterproofing. A coating compound must be applied under the concrete screed, and a penetrating compound must be applied on top of it. This type of insulation will prevent any water leakage.

It should be added that the composition of materials applied by coating may include the following substances:

water-based (with the addition of acrylic);
bitumen-rubber;
bitumen-polymer;
cement-polymer;
polyurethane;
bituminous.

Various types of fillers are often added to bitumen-based mixtures to make them flexible. Also, mastics have good adhesion, which allows them to be used on any materials.

The use of such materials also has disadvantages:

do not tolerate large temperature changes; chips and cracks may appear on the coating;
subject to biological corrosion;
During work they emit a pungent odor that lingers in the room for a long time.

Bitumen mastics waterproof flooring well; their cost is low, but they can be used for about six years.

If we are talking about polymer materials, then they have practically no disadvantages. And among the advantages are the ease of laying the material both on open surfaces and in hard to reach places.

There is also plaster mixture, consisting of gypsum, cement and various polymers. To her positive qualities It can be attributed to the fact that she is not afraid of temperature fluctuations. Applying such waterproofing is also not difficult. To do this, you can use a brush or roller. It is necessary to take into account that during processing the joints are covered with sealant tape.

Tapered waterproofing is very effective, but its installation will be much more difficult.

The most common variants can be identified:

roofing felt;
isoplast;
ecoflex;
hydroisol;
mostoplast.

The strengths of adhesive waterproofing include the following:

it tolerates temperature changes well;
is very durable;
has a good elastic structure.

Pasting materials There are two types depending on the method of their installation:

installed using glue;
have a self-adhesive backing.

For the former, bitumen-based mastics can be used as glue. Self-adhesive ones already have a sticky layer, which is most often also made of identical mastic.

Before you start waterproofing your bathroom, you need to:

Decide on the location of all plumbing fixtures and household appliances, that is, everything that will be connected to the water supply.
When selecting waterproofing materials, you must immediately take into account the building materials on which they will be applied, and whether there will be a heated floor in the room.

If the apartment is located in a new building with a rough renovation, then the walls are most likely covered gypsum plaster. Before starting work, her white upper layer must be removed, for example using a sander.
It is necessary to especially highlight those places where the bathtub, toilet, sink and shower will be located; the areas around them must be waterproofed first of all.
If the surfaces have large unevenness, then first they need to be sheathed with sheets of plasterboard or tongue-and-groove slabs, which are laid on a frame base.
When waterproofing wooden walls, it is best to use plastic liquid rubber or rolled materials; in addition, the wood must be treated with special antiseptics.

How to do it yourself?

It is quite possible to waterproof a bathroom yourself. You just need to pick suitable option waterproofing, understand the installation, which will depend on its type, and follow all the manufacturer’s recommendations.

Before starting work, you must completely vacate the room., take out all the garbage, clean the floors, walls and ceiling of old finishing materials. Next, the prepared surfaces must be treated with an antiseptic solution. You can do it yourself. To do this you will need water, ammonia and medical alcohol.

First of all, it is necessary to apply waterproofing to the walls. During work, be sure to use a protective mask and ventilate the room.

After treating all surfaces, you need to ventilate the room well and dry it. This will take at least a day. During this time, you need to ensure that dust, debris and moisture do not get there.

Only after the layer has dried well can you begin to decorate the room.

When doing all the work yourself, you can combine roll materials and bitumen mastic for greater efficiency.

- Tools

Before you start installing waterproofing in the bathroom, it is better to prepare materials and tools for the upcoming work:

waterproofing material;
construction hair dryer;
putty knife;

level;
reinforcing mesh;
plaster;
gun with silicone;
necessary finishing materials;
stationery knife;
waterproofing strands for finishing the seams of the room.

Considering the properties of the room and the method of installing waterproofing, it may be necessary Sander or even a heat gun.

When applying the first layer of coating waterproofing, it is better to use a comb spatula, which allows you to create a uniform thickness of the coating.

Painting waterproofing is best done with a pneumatic spray gun. With its help, the speed of work will significantly increase, there will be no gaps on the surface, and all micropores of the walls or floor will be better filled.

Before applying plaster waterproofing, it is necessary to thoroughly prepare the room to ensure that there is no debris, even the smallest. To do this you should use a vacuum cleaner high power, which will remove even the finest dust from the surface.

- Work order

Waterproofing work can be done in three ways:

Fastening

Deposition

This method requires a gas burner or a heat gun. But since it is dangerous to use a gas burner in enclosed spaces, it is better to choose a heat gun, this is a safer option. This method is also not very common, since not everyone has a heat gun.

By gluing

Usage this option installation of waterproofing is more acceptable for doing it yourself, in this case optional equipment not necessary at all. To fix the material, you need to apply bitumen-based mastic to the surface. It is worth considering that this method also involves additional moisture protection.

When performing work on waterproofing the floor There is a certain order for their implementation, regardless of the materials used:

base primer;
waterproofing layer;
screed;
flooring.

Before applying the waterproofing materials themselves, it is necessary to prime the surface to achieve good adhesion. You can choose any deep-penetrating primer. After it has completely dried, you can proceed to installing the waterproofing.

Paint-type waterproofing – inexpensive and effective method protection of concrete floors. The thickness of the layer of such insulation is about two millimeters, but it is better to apply it in two layers. With such waterproofing it is possible to use polymer varnishes and paints, liquid rubber.

During installation, you should adhere to the following technology:

clean the room and dry it well;
level the surface, seal cracks, if any;
strictly following the instructions, prepare the material, it is better to do this in small batches;

It is better to carry out painting work zonally, using either a brush or a roller;
only after one layer has completely dried can you move on to the next;
it is necessary to waterproof the entire floor and cover part of the wall (about 20 cm);
after complete treatment of the room, you need to wait for the materials to dry;
then you can proceed to pouring the screed and laying facing materials, For example, ceramic tiles.

Pasted waterproofing is universal, as it is suitable for any type of premises. Can be mounted both cold and hot. It just depends on the type of material being installed.

This is done as follows:

mastic must be applied to the measured area so that it matches the size of the sheet of waterproofing material;
the material is carefully placed on the coated area so that there are no folds or bubbles, and the fit is very tight;
make an overlap of up to 20 cm on the walls.
when moving to the next section, it is necessary to overlap the sheet material one on top of the other by about 15 cm;
to obtain more durable waterproofing, it is possible to lay another layer, laying it perpendicular to the first;
After all the waterproofing has completely dried, you can begin installing the screed and tiling the floors.

Waterproofing by coating is a very durable type of insulation due to the fact that it contains cement, sand, chemical and polymer components. It can be either one-component or two-component.

Two-component coating waterproofing is very strong and durable, but requires great care during the work process. The prepared composition must be applied within certain period specified by the manufacturer, after which it will lose its properties. When choosing such waterproofing, you must carefully study the instructions for use, since not all mixtures can be used indoors. Such compositions fill all holes well, even the smallest ones, and also have good penetrating properties.

Stages of work:

Before starting work, you need to make sure that the floor is clean and free of stains.
For more quality implementation When working in the corners of the room, you can equip special roundings using concrete mortar.
The entire floor must be covered with a primer solution and wait until it dries.
Next you need to prepare a solution. Depending on how you apply it, it can be different: when working with a brush - liquid, when working with a spatula - thick. But be sure to follow the manufacturer's instructions.

The mixture should sit for at least five minutes. After this, you need to stir it well again and make sure that it has a uniform consistency.
It is better to apply waterproofing in two to three layers with a thickness of at least two millimeters.
It is necessary to apply waterproofing tape to the corners; it will provide more complete protection.
After applying all layers, it is necessary to wet the surface well. Without it, polymerization of the composition will not proceed well.
This waterproofing takes at least two days to dry.
Next, unlike previous methods, you can immediately begin laying ceramic tiles. There is no need to make a layer of cement screed.

Plaster waterproofing is a less effective type of protection, so today it is used less and less.

To apply it you need:

first of all, you need to mix the solution: sand is mixed with cement at a ratio of two to one;
sprinkle the floor dry cement mixture, pour water and stir - this will increase adhesion;
then you can start laying the solution; it is necessary to monitor its level using beacons;
after completing the work, you need to let the waterproofing layer dry thoroughly;
after drying, you can begin to form the concrete screed;
The final stage will be laying ceramic tiles.

Waterproofing with aqua panels. Aquapanels are a very high-quality modern material for waterproofing bathrooms. They are also well suited for protecting room walls.

When working with them, you must strictly follow the instructions:

cover the surfaces of the room with aqua panels;
special synthetic latex is applied to them;
a special waterproofing mesh must be glued to the joints;
the joints of the aquapanels are covered with the same waterproofing mesh;
Next, you need to apply synthetic latex to the remaining areas, since it has a bright blue color, this allows you not to miss any areas;
After the material has completely dried, you can begin finishing work.

In addition to the materials already mentioned, there are also ultra-modern ones that are also worth mentioning.

Waterproofing using liquid rubber is made of bitumen with polymer additives, giving it greater resistance to external factors. To prepare the solution, you need to mix it with calcium chloride and water. The solution turns out to be liquid, so it is possible to apply it using a spray bottle.

Although it is possible to apply a solution of different consistency, so this can be done using different methods:

by pouring method, obtaining an even and smooth coating;
spraying method - with this method, filling occurs more deeply and efficiently;
painting technology using painting tools.

Despite all the advantages, this material has a number of disadvantages that are also worth mentioning:

its service life is short - up to five years;
the solution is incompatible with brick surfaces and contributes to their destruction;
has a fragile coating that must be coated;
The filling process must occur very quickly.

Perhaps waterproofing the walls will require a little more attention. For them, mixtures based on cement-polymer materials are best suited. It is better not to use bitumen, as it is a rather heavy material; it can lie poorly, roll off, and even peel off over time. Corners and communication pipes require special attention. It is better to further insulate them with cuffs.

After applying the waterproofing layer to the walls, it is better to also apply a layer of primer. Waterproofing a bathroom on wooden walls and floors.

This issue needs to be considered in detail, since this building material has a number of features:

wood is very sensitive to humidity and high temperature changes;
it happens that it is not possible to ventilate the room;
wood is a mobile building material, so cement-based waterproofing will not work.

IN wooden house it is necessary to use plastic waterproofing materials or roll ones. Before starting work, the wood must be treated with an antiseptic, then:

you need to make sure the surface is clean and avoid oily stains;
then sand the surface well;
the boards are impregnated with an antiseptic solution;
then water-repellent OSB boards, all gaps are puttied;
applied next layer waterproofing;
Only after all layers have completely dried can you begin finishing.

Walls wooden house in the bathroom it is good to waterproof using moisture-resistant plasterboard, roll materials, for example, aluminum foil:

fix aluminum foil It’s better to start from the bottom row;
it is necessary to ensure that it lies flat, without bulges or folds;
joints can be treated with waterproofing tape or tape;
after this, you need to form a frame to secure sheets of drywall from slats cut from metal or wood;
Now you can move on to attaching moisture-resistant drywall;
After completion of all work, tiling of the walls should begin.

In order to properly waterproof a bathroom with your own hands, you can use the following tips:

it is necessary to select the right waterproofing materials;
identify areas that are most susceptible to moisture ingress;
before starting work, it is necessary to prepare the surface well, clean it by about 2-3 millimeters;
All pipes must be fitted with special seals;

pay great attention to the joints of walls and floors, as well as corners;
when waterproofing the floor, it is necessary to cover about 20 cm of the wall;
laminated waterproofing is at risk of ruptures, so it is better to strengthen it with a concrete screed;
When making a solution from any dry mixtures, it is better to first pour in water, and then gradually add the dry component, this will prevent the appearance of lumps. It is also better to use an electric mixer to achieve a smooth consistency;

at self-production there is no need to immediately make a large amount of the mixture, otherwise the stagnant residue will lose its qualities and properties;
during waterproofing work, it is necessary to exclude the presence of drafts, as well as direct exposure to sunlight;
As for wooden houses, even with good waterproofing in bathrooms, it is better to monitor the possible accumulation of water on surfaces and wipe it dry as quickly as possible;

in the process of waterproofing the floor, you have to work on your knees, so you can build a stand from a board and soft rags so as not to damage the waterproofing and for ease of work;
It is better to treat pipes and sewers with a waterproofing solution at least twice and very carefully;
when applying several layers of waterproofing, you need to lay them in different directions;
You can use a gas burner to glue waterproofing sheets together.

To summarize, we can say that waterproofing a bathroom in an apartment or house is a very important step in the renovation process, and it is better not to ignore it. You can do waterproofing yourself, as this process is not so complicated. It is possible to select any materials that correspond to the surfaces of the room, the preferences of the owner, as well as the planned costs.

Before you start work, it is important to prepare the room well, and also study all the instructions and recommendations specified by the manufacturer. If they are followed correctly, as well as following useful tips, you can independently install high-quality waterproofing for your bathroom, which will last for many years.

The technology for laying tiles in the bathroom provides for preliminary protection of building structures from moisture.

For such tasks, manufacturers offer a range of materials.

Their strong and weak sides we will look at in this article, the topic of which is waterproofing a bathroom under tiles: which is better?

Ceramic tile cladding made according to all the rules does not allow water to pass through. But since it is not monolithic, the probability of depressurization is quite high. Moisture penetrates under the coating for a number of reasons:

finishing technology has been violated;
cheap low-quality grout was used;
due to mechanical impact, it crumbled in places or microcracks appeared in it;
a leak has occurred at communication points, corners or other vulnerable areas.

In an apartment building, if there is no waterproofing on the floor, due to a flood, you will have to make repairs not only for yourself, but also for the neighbors below. But minor leaks are also dangerous.

Waterproofing a bathroom under tiles

A small amount of water is enough for mold spores to germinate and fungus to develop. These microorganisms deal a double whammy:

poison the air with spores and toxic secretions, causing negative impact on the health of residents;
use mineral compounds from building material, as a result of which it is destroyed.

Even if laying tiles in the bathroom is entrusted to an experienced and conscientious craftsman, preliminary waterproofing of building structures is necessary.

Types of materials

Waterproofing materials are available in various designs:

polymer membranes and films;
rolled bitumen materials;
mastics;
polymer plasters;
penetrating compounds.

Each of them has characteristic advantages and disadvantages.

option for using waterproofing in a bathroom under tiles in a room renovation

Polymer films and membranes

The thickness of the films is 0.2 mm. They are made from polyethylene or polypropylene.

The membranes are thicker: from 0.8 to 2 mm. They are made from polyvinyl chloride or synthetic rubbers EPDM and EPDM.

Films and membranes are glued using mastics; some are equipped with an adhesive layer covered with celluloid film.

The advantage of these materials is the significant size of the panels: the width of the roll can reach 15 m, length - 60 m. This allows you to create a seamless waterproofing coating even in the most spacious bathroom.

Rolled materials based on bitumen

The addition of polymers provides the following advantages:

service life increases;
it becomes possible to install by fusing method.

Instead of low-strength cardboard, a rot-resistant base is used: polyester, fiberglass or fiberglass.

Many materials are produced using this technology:

bikrost;
rubemast;
stekloizol;
fiberglass, etc.

The common everyday name for all is euroroofing felt. The rolls are narrow - 1 m wide.

Mastics

Divided into 4 varieties:

Polymers based on MS polymers: butyl rubber, etc. The most durable and environmentally friendly: do not contain bitumen and solvent. Disadvantage: high cost.
Bitumen and bitumen-polymer (with the addition of latex, crumb rubber, polyurethane and other polymers). They are cheaper, but less durable and contain solvents (they release harmful substances).
Polymer based on acrylic. Cheap and short-lived.
Epoxy.

The latter are intended for outdoor use, so they are not suitable for the bathroom.

Polymer plasters

Manufactured from non-shrinking or expanding cement with the addition of latex, other polymers or epoxy resin, bitumen emulsions and pastes. The sealing components are ferric chloride, sodium aluminate, and calcium nitrate.

Penetrating compounds

They are absorbed by a porous surface and act inside the pores. Penetrating waterproofing is divided into two types:

penetrating compounds: clog pores;
water repellents: leave the pores open, but wet their walls, eliminating the capillary effect.

Concrete coated with a water-repellent agent remains vapor-permeable; such insulation does not protect against direct exposure to water. It is used for treating walls outside.

For tiled floors

When pipelines break or accidentally splash, water collects on the floor, which is why the most reliable waterproofing materials are laid here, and in several layers. These are films and bitumen-polymer roll materials.

For walls under tiles

On vertical surfaces, the adhesion of the waterproofing material is primarily taken into account.

The adhesiveness of films and membranes is low, so they are not suitable for tiling. Coating (most often), plastering and penetrating compounds are used - they are characterized by high adhesion.

According to the direction, waterproofing materials under tiles are prescribed for walls and floors.

Application technology

Thorough knowledge of material application technology - required condition effective and durable waterproofing. If installed incorrectly, it will not provide protection from moisture, regardless of quality and reliability. Let's consider methods for installing the listed types of waterproofing.

Welded rolled materials

When heated, the bottom layer of the deposited bitumen-polymer material softens and becomes sticky. A couple of days before the start of work, the rolls are rolled out so that the panels can rest. If there is no free space, they are rewound so that the material bends in the other direction.

Installation procedure:

The floor surface is cleaned of dust and treated with a bitumen primer (primer).
The roll is rolled out on the floor and placed in the correct position. Try it on, trim it and twist it from both sides towards the middle so that you get two rolls.
Heat the bottom surface of one roll with a burner until it becomes plastic and gradually unwind it, pressing the material to the floor and rolling it with a roller.
The second roll is fused in the same way.
The next panel is laid with an overlap of 10 cm.

Weldable roll material

The floor is waterproofed by extending onto the walls to a height of 30 cm. Two types of burners are used:

gas;
gasoline (blowtorch).

Gas equipment is more convenient, but due to the risk of explosion, it requires skillful handling. For a beginner, it is better to use a blowtorch.

Overheating of the material leads to a deterioration in its quality, so exposure to flame should be moderate. Convenient materials that, upon reaching optimal temperature a pattern appears on the surface.

Coating

Coating waterproofing includes mastics and polymer plasters.

The mastic is applied in the following order:

Remains of the old finish are knocked off the surface to be treated and dust is removed.
Then it is primed. The primer differs from the main coating only in consistency - it is more liquid. This allows it to penetrate into the smallest pores and microcracks, thereby improving adhesion.
In accordance with the instructions, the main composition is prepared if it is supplied in two-component form. The period during which the mixture must be applied (survival time) is limited, so it is prepared immediately before application and in a volume that the master is guaranteed to have time to use during this period. “Life time” is indicated on the packaging.
Apply coating waterproofing to the surface. Two methods are used: manual ( liquid formulations applied with a brush or roller, pasty - with a spatula) and machine (sprayers, blowers, etc. are used).
The corners are glued with a mesh with a waterproof coating.
Apply the second and subsequent layers, capturing the mesh glued into the corners. Multilayer installation increases the reliability of the coating and is almost always used. The time for applying the next layer differs for different mastics. Some require waiting for the previous layer to dry and harden, others require only partial setting, and others are applied immediately. If the instructions are not followed, the quality of the waterproofing will suffer.

Coating insulation

MS polymer mastics can be applied to a dry surface without a primer.

Polymer plasters are applied like a regular cement-sand mortar: using a trowel, a trowel and a float. The layer thickness is 2.5-3 cm. In areas large area machine application is used - shotcrete.

The solution is moistened within 20 days after application. It is important to carefully study the instructions: some varieties must be moistened 12 hours after installation.

Pasting

Some polymer films, membranes and bitumen-polymer materials are equipped with an adhesive layer covered with a film.

This makes the installation technology extremely simple:

The surface cleared of dust is primed.
Roll out the roll and place it in the correct position, trim it. Then roll it up again.
Removing the film from the adhesive layer, gradually roll out the material, pressing it to the floor and rolling it with a roller.

Glue the second panel in the same way, maintaining an overlap of 10 cm.

Impregnation

Penetrating waterproofing is applied as follows:

Concrete or plaster is moistened. Water acts as a reagent: it forms, with the main component of the impregnation, crystalline hydrate - a solid substance that closes the pores in the solution.
Impregnation is applied to the surface with a paintbrush.
After waiting for the composition to begin to set, it is moistened and a second layer is applied.

For 20 days, the treated surface is periodically moistened or covered. plastic film, limiting moisture loss.

Which waterproofing under tiles is better to choose for a bathroom?

For work in residential premises, materials that do not emit harmful substances. Bitumen mastics containing a solvent and bitumen-polymer built-up materials that emit a pungent odor are not classified as such. Self-adhesive rubber membranes (PVC analogues emit harmful vinyl chloride gas) and mastics based on MS polymers that do not contain bitumen and solvent are more environmentally friendly.

Also for interior works Suitable coating waterproofing based on cement with the addition of polymers.

Review of popular waterproofing materials

The following materials received high ratings from users:

Mapegum WPS. Coating composition for interior work.
Ceresit CR 65. Cement-polymer composition.
Toiler TR 500. Cement-polymer mixture.
MasterGood. Polymer mastic without solvent.
Osmoseal. Penetrating waterproofing from Index (Italy).
Nanodefense. Water-based mastic from the company Kerakoll (Italy).
Hydroflex. Mastic from the company Litokol Italy (Italy).
“Ivsil Vodostop” and “Glims Vodostop”. Cement-polymer coating waterproofing.

Price

Mapegum WPS, 5 kg – 2240 rub.
Ceresit CR 65, 25 kg – 1040 rub.
Toiler TR 500, 3 kg – 420 rub.
MasterGood, 14 kg – 2600 rub.
Osmoseal, 25 kg – 3800 rub.
Nanodefens, 15 kg – 1900 rub.
Hidroflex, 5 kg – 5300 rub.
“Ivsil Vodostop”, 20 kg – 504 rub.
“Glims Waterstop”, 20 kg – 1150 rub.

Waterproofing is the most important stage of finishing work in the bathroom. A waterproof barrier will protect building structures from exposure to moisture and the development of mold when tile seams are depressurized and will prevent water from entering the underlying rooms during flooding. After familiarizing yourself with the recommendations outlined, choosing and laying the material will not be difficult.

The bathroom is a room with high humidity, where, in the absence of good ventilation, condensation constantly accumulates. The moisture that remains on the tiles leads to the formation of fungus and mold in the joints between the tiles. In this case, high-quality waterproofing protection is a fundamental factor in long-lasting repairs and a guarantee that in the event of an accidental leak, the rooms below will not be flooded. Therefore, everyone who is planning to decorate a bathroom thinks about the question of what is best to choose for waterproofing a bathroom under tiles.

The lining of the walls and floors in the bathroom is constantly tested for stability in Everyday life. Temperature fluctuations, splashes, accidentally spilled water - all this negatively affects appearance And operational properties coverings. Through the joints, moisture seeps under the tiles, accumulates under the tiles and in places where communications are laid, creating favorable conditions for the proliferation of pathogenic microorganisms.

Waterproofing serves as reliable protection for the walls and floor of the bathroom from excessive humidity and its consequences. In addition to the fact that a high-quality water barrier ensures the durability of the finish and preserves its aesthetic appearance, it also reduces the risk of pipe leaks and flooding of neighbors below.

Waterproofing must be laid along the entire perimeter of the floor, extending onto the walls at least 10-20 cm. Wall waterproofing is needed in those places where the suite, bathtub, washbasin, shower and other plumbing fixtures are located. In this case, sections of the wall should be covered at least half a meter in each direction from furniture and plumbing. In addition, experts recommend waterproofing the plumbing cabinet to avoid water supply and sewerage leaks.

Types of materials for waterproofing

The modern market offers various waterproofing materials, which differ in method of application and composition. All materials for moisture protection of walls and floors in the bathroom can be divided into coating mixtures and rolls for pasting.

Materials for coating are available in the form of a dry mixture and granules, with a paste-like consistency or in a ready-made state. The following types of such compositions are distinguished:

Bitumen-polymer mass. It is supplied ready for use, stretches and recovers well, is resistant to thermal changes and the influence of aggressive chemical components, has no pungent odors and is safe to use. This material is used to insulate the bathroom floor before covering it with a thin screed.
Liquid waterproofing (bitumen-latex). It is considered one of the most affordable ways to provide a bathroom water barrier; it forms a monolithic moisture-proof layer without joints or connecting seams. On top liquid waterproofing It is recommended to make a thin screed and then lay the tiles.
Cement-polymer mixture. The composition sets quickly and is ideal for waterproofing walls and floors before cladding. This material must be applied using a paint brush to a well-treated and primed base.
Acrylic enamel. The most budget-friendly and simplest option for waterproofing a bathroom. This composition is not durable and quickly begins to crack, so experts do not recommend using it.

Rolled waterproofing is made on the basis of fiberglass and polyester fabric, the bottom is covered with an adhesive composition for tight adhesion to the surface, and a special substance is applied to the top part, which ensures high adhesion to tile adhesive.

Before laying the material, it is necessary to clean and level the surface; small differences of up to 2 mm are allowed. The advantages of roll waterproofing are its affordable price and efficiency of repair work, since the material does not require breaks to dry.

Features of coating and adhesive waterproofing

Coating waterproofing of the floor and walls in the bathroom is carried out by applying a plastic material, the thickness of which can be from 1 mm to several centimeters. The main advantage of such protection is the formation of a seamless elastic coating, as well as the possibility of application to any surface. It is best to use coating compounds in cases where subsequent filling of the screed is required.

On a note! One of the most optimal options in terms of price and quality ratio is bitumen mastic. For a layer of waterproofing 2 mm thick per 1 square meter, about 3.5 kg of material will be required.

For horizontal bases, it is recommended to use bitumen and bitumen-polymer mixtures with modifiers to increase strength. The diluted bitumen and mastic are poured onto the floor and spread evenly with a rubber spatula. On the surface of the walls, the composition is applied with a brush or roller in two layers.

The adhesive waterproofing must be overlapped to obtain sealed seams. The main difficulty is to correctly calculate the amount of material and cut it. Laying and leveling the canvases is also a very labor-intensive process; in addition, after cutting, the material must lie down and straighten out within 24 hours.

Installation of a hydraulic barrier: when and how to do it?

Before starting renovation work in the bathroom, many people wonder when to carry out waterproofing - before or after the screed. Each of these solutions is acceptable and has its own advantages and disadvantages. It is recommended to fill the concrete floor with a screed after covering it with waterproofing material. This method will provide the most even surface, high adhesive characteristics of the base, and, accordingly, good adhesion to tile adhesive. For these purposes, it is better to use bitumen, bitumen-polymer and bitumen-latex compositions, as well as waterproofing in rolls.

Some finishers install a water barrier on top of the screed, explaining that if there is a leak, concrete base will be reliably protected from moisture penetration. This technology has its place, but there is no guarantee that tiles glued to waterproofing with a thin layer of glue will last a long time and retain their aesthetic appearance. However, if you choose this method, then preference should be given to cement-polymer materials and roll waterproofing.

Waterproofing over the screed is made with cement-polymer materials

There is another option for arranging waterproofing - combined method, which involves two layers of screed: under the waterproofing and on top of it. Such protection will cost many times more and take longer, but the result will be the most effective and reliable.

Wall and floor waterproofing technology

After preparing the base and dismantling the old screed, the following activities are performed:

it is required to prime the cleaned base and leave until completely dry;
using beacons, pull out a screed more than 3 cm thick, into which the sickle mesh is embedded;
after a few days, clean the base from dirt and prime it with two layers;
Apply the selected coating mixture to the corner joints of the walls and floor, let it dry and stick waterproof tape to these areas;
Apply waterproofing along the entire perimeter of the floor with an overlap of at least 20 cm on the walls;
apply three layers in this way, with each layer drying well;
treat the last layer with concrete contact to enhance adhesion to the glue;
a day later, fill the floor with a second screed with a layer of about 1.5 cm;
Cover the base with primer, let it dry and begin finishing.

For waterproofing walls, it is best to use cement-polymer mixtures. Before distributing the moisture-proofing composition, the walls must be covered with two layers of primer, paying attention to the corners and areas where communications and pipes enter. The corners should be taped with special tape, and protective sleeves should be placed on the pipes. Use a brush or roller to coat the walls with waterproofing, and after drying, cover them with concrete contact. To provide high quality cladding, it is recommended to stick a reinforcing mesh onto the moisture-proof mixture.

Anton Tsugunov

Reading time: 5 minutes

The bathroom has the most difficult microclimate: constant dampness and heat. This contributes to the appearance of mold and mildew on surfaces. It also often happens that water in considerable quantities gets onto the entire surface of the floor. To avoid flooding your neighbors, it is necessary to waterproof the bathroom floor under the tiles. It is also necessary to protect other surfaces in the room from excessive dampness, since moisture is also detrimental to wall coverings.

Why is waterproofing needed?

Often during construction and renovation they skip the waterproofing step for the bathroom and immediately start laying tiles. This is a very common mistake. Some do this out of ignorance, some believe that moisture will not be able to seep through the tiles and seams, and some simply do not know how to protect the floor and walls under the tiles from moisture.

However, it is worth remembering the old folk wisdom: water will find a hole everywhere. It will seep through cracks and chips invisible to the eye, settle in the most inaccessible places, and will slowly but surely cause harm. Waterproofing will avoid many troubles.

Waterproofing will prevent water from destroying porous base materials (concrete, foam blocks, cement particle boards, gypsum fiber sheets etc.).
Waterproofing a wooden floor in a bathroom requires special attention, since this material is more susceptible to dampness than others: it molds, rots, and quickly becomes unusable.
It will significantly extend the service life of the walls and floors of the bathroom.
Will prevent.
Will allow you to keep finishing materials in their original form longer.
If for any reason there is a flood in the apartment, the water will not be able to pass to the neighbors below - it will be stopped by waterproofing.
A healthier microclimate is created in the bathroom.

Types of waterproofing

The variety of moisture-protecting materials is quite large. It is difficult to say unequivocally which is better for use or for the shower: you need to take into account many subtleties and nuances. However, everyone can find a waterproof material that suits their needs and wallet size. There are several main ways to waterproof a bathroom:

Coloring. Bituminous and polymer-based mastics are applied to the walls and floors with a brush or roller. The result is a flat surface with no joints or seams. If you try hard, you can achieve almost perfect smoothness. To this type waterproofing was quite reliable, it was necessary to apply mastic in several layers.

Coating. In this case, a special mixture is prepared from a solution of sand, cement and special additives for waterproofing, which is applied to the surface with a spatula or trowel. Often the same mixture is used instead of a concrete floor screed, since it can also be laid in a fairly thick layer, which allows you to hide all the bumps and irregularities.
Pasting. With this option, roll or sheet materials are used. They can be built-up or self-adhesive: they are heated with a torch or the protective layer is removed from the adhesive base and the material is pressed to the surface. Externally, such waterproofing resembles roofing materials: roofing felt, bikrost, etc. Bitumen or fiberglass is used as a base. As a result, after pasting, the floor in combination with the lower part of the walls resembles a trough.
Filling. From special mixture a solution is prepared, which includes materials such as liquid glass or concrete with additives that make it moisture-proof. Then the resulting waterproofing is poured and sealed over the bathroom floor. The result is a monolithic layer, without seams or joints.
The use of waterproofing compounds that penetrate into the material and change its structure. They are applied with a spray or brush, as a result of which the treated material acquires moisture-repellent properties.

Spraying. In this case, a special moisture-resistant composition based on polymers or rubber is sprayed onto the walls and floor. Some time after application, it hardens and turns into a dense film that reliably protects against moisture penetration.

Each of the presented waterproofing methods has its own characteristics, which are suitable or not suitable for certain operating conditions. Their characteristics will affect the possibility of use in a particular case, so it is worth taking a closer look at each of the methods of waterproofing a bathroom under tiles. Then it will be easier to decide what is better in this or that case.

Coloring

A universal method of waterproofing, equally suitable for both walls and bathroom floors; if desired, it can even be used for the ceiling. One of the simplest methods. The work is carried out in the following order:

The mastic is diluted with a special solvent to the consistency of thick paint.
Apply the first layer of waterproofing to the floor and walls (at least 20 cm from the level of the future baseboard), as well as to “wet areas” (shower stall, washbasin, bathtub, near risers, etc.) and 50 cm around them.
Dry the 1st layer.
Apply the second layer perpendicular to the 1st layer. It is very important to carefully ensure that there are no omissions.
Sprinkle the still wet mastic with fine sand to improve the adhesion of the tile adhesive.
After drying, sweep away excess powder. Now you can start laying the tiles.

Pasting

Waterproofing a bathroom under tiles should be done using modern materials: they are easy to work with, they protect the surface well and last a long time, for decades. Cover the room as follows:

The material is rolled out on the floor, allowed to rest and straighten.
Cut the waterproofing roll into strips. In this case, it is taken into account that the material should be placed on the walls by 20–30 cm, and the strips should be overlapped by 10–15 cm.
The surface to be treated is coated with bitumen or mastic made on its basis.
Lay out the cut strips.
The sheets and mastic are heated with a burner. The rubber becomes plastic, and the mastic becomes sticky.
Place the material and slam down if necessary. At the same time, it is taken into account that joints or seams in the corners are unacceptable.
All connections are additionally coated with mastic. The waterproofing is ready.

Coating

Coating waterproofing is one of the simplest, safest, and therefore popular types. He reminds me a lot ordinary plaster. The working solution is prepared in a similar way: buy ready mix, consisting of sand, cement and polymer additives (usually sold in paper bags, packaged in 5, 10, 15 or 25 kg) and mixed in a certain proportion with water. The prepared waterproofing solution is applied to the walls with a spatula and “coated” them. The mixture tightly plugs the smallest pores and cracks in concrete and fiberboard. The solution can be applied to the bathroom floor, walls and even the ceiling.

The putty dries within a day, i.e. the next day you can start laying the tiles, since in this case it is not necessary concrete screed for the floor. However, when working, it is necessary to remember that the viability of the solution is short, it sets in just a few minutes, so all work must be done quickly.

Which waterproofing is better?

It is difficult to say unequivocally which waterproofing under tiles will be optimal in a given case. For greater clarity, you can compare all the methods of waterproofing walls and floors under tiles in the bathroom.

Type of waterproofing	Positive sides	Negative sides
Coloring	· takes up little space, does not reduce the volume of the room; · speed; · low cost of materials; · versatility; · the layer is smooth and thin, but without joints	· fragility; · substances with a pungent odor are used for dilution; there is a risk of toxic poisoning when applied; · For some time after applying the waterproofing, toxic fumes are released; · cannot be used indoors with " warm floors»; fragility (easily damaged)
Coating	· versatility; · strength and durability; · no additional concrete screed required; · high level adhesion to glue; · it can be used to smooth out small bumps and holes on the floor and walls	· the area of the room decreases, slightly; · short pot life of the solution, all operations for applying waterproofing must be performed quickly
Pasting	· thin layer; · reliability; · waterproofing does not reduce the size of the room; · versatility	· additional equipment (burner) is required; · if handled carelessly, the sheets may tear; · can only be installed in well-ventilated areas where gas will not accumulate; · weakness– seams, they require additional reinforcement; Can be torn or scratched when laying tiles
Fill	· very durable and reliable waterproofing; · ideal waterproofing of floors under tiles; · no concrete screed required; Can even out all floor imperfections	· the floor level rises significantly; · reducing the area of the room; This waterproofing is used only for floors
Waterproofing composition	· ease of application of waterproofing; · high speed of work; Can be used on walls, i.e. where water does not stagnate	· low efficiency (compared to other waterproofing methods); · the material is not suitable for floors
Sputtering	· thin and durable protective layer; · the dimensions of the room do not change; · the material reliably holds water	· requires careful handling and accuracy when laying tiles, since the resulting film can be torn; · it is not possible to apply it in all rooms; · special equipment required

As you can see, each material has its own specifics. This must be taken into account when choosing.

What else should you pay attention to when choosing a waterproofing method?

In addition to the specifics of materials, a number of factors and parameters need to be taken into account:

Features of the room, so not all methods of waterproofing can be used in small rooms.
Wall and floor material: concrete, fiberglass board, GVLV, wood or others.
In some cases, it is impossible to raise the floor even a centimeter, then pouring and putty will not work.