High-quality insulation and decoration of the front of the house guarantee significant savings in thermal energy, which is especially important in the context of a constant rise in the price of energy resources. In addition, the complex implementation of the work makes the house more attractive from an aesthetic point of view. There are different methods of insulating and decorating buildings, but a wet facade is considered the most modern: the technology of this finishing method is described in detail in this article.

Thermal insulation of facades with a wet methodoutside or inside: features of choice

Traditional building materials used for the construction of walls, such as bricks, wall and concrete blocks, are characterized by increased strength and a fairly long service life. At the same time, they do not have a high level of thermal insulation, and therefore a significant part of the thermal energy simply evaporates through the walls. In order to prevent this undesirable process, the walls are insulated.

Insulation can be both internal and external. At the same time, the amount of material, the amount of work and the very organization of the process inside the house are more profitable and cheaper. At the same time, there are a number of serious arguments in favor of insulating the house from the outside.

Outdoor methods, which include insulating a wet facade, assume the presence of a so-called dew point - this is an area where condensation is released in conditions of temperature changes both in the middle of the room and outside. If the insulation is attached to the inside of the load-bearing wall, there is a high probability of condensation, which leads to increased humidity in the room. Therefore, this method of thermal insulation is less functional and even hazardous to health, since fungi and mold appear on the walls against the background of dampness.

With external thermal insulation, the level of thermal resistance or thermal inertia of the walls increases significantly. In other words, a building insulated from the outside retains heat for a longer time with a significant decrease in temperature outside and heats up slowly in the summer heat.

With external insulation of a house, a wet facade eliminates all kinds of cold bridges, through which, in most cases, the main heat loss occurs in the case of arranging internal thermal insulation.

What is a wet facade:technology features

The external method of insulating facades has its own classification. Distinguish between dry and wet technologies. The first option, in turn, includes prefabricated or hinged facades. The main material used in this technology is vinyl or metal siding. The wet facade system is considered to be more practical, highly efficient, economical and visually attractive.

Important! A distinctive feature of a wet facade is its multi-layer design, where each individual layer plays its own important role in the process of insulation and decoration. For the full implementation of functions, preference should be given only to high-quality materials.

Using the wet technique allows you to get not only good quality insulation, but also a beautiful home decor. An important condition is the use of high-quality special solutions. The final stage is the process of plastering and painting - these are the key components of the beautiful appearance of the building.

Wet façade technology involves creating a multi-layered cake on the outside. The layers are fixed to the wall by applying special adhesive solutions, mastics and plaster, which are dissolved in ordinary water. Hence the name - wet facade. The work involves adherence to a clear order of priority in the application of layers: primer, adhesive mixture, thermal insulation boards, additional gluing, mesh reinforcement, plastering and painting.

Each phase involving the use of the wet method, be it sizing, plastering or painting, must be carried out at a temperature above +5 ° C. Not only the quality of work and the degree of thermal insulation, but also the service life of decorative insulation depend on the sequence of work, materials and compliance with the conditions. Otherwise, the facade will soon begin to crack and collapse.

Wet facade: pros and consoutdoor insulation technology

Wet insulation technology has a number of undeniable advantages and a number of disadvantages. The advantages include:

• a high degree of decorativeness and attractiveness of the facade;
• the lightness of the heat-insulating layer, which allows the technology to be applied on buildings with a weak foundation;
• reliable thermal insulation that retains heat in the house for a long time on the principle of a thermos and excludes the appearance of "cold bridges";
• additional protection of the house from destructive atmospheric influences (moisture, freezing, wind);
• reliable sound and vibration isolation;
• durability (a facade made using wet technology can last up to 40 years);

• eliminates the appearance of condensation and, as a result, dampness in the house, which is due to the "breathing" external plaster;
• the cost of a wet facade is acceptable, especially in comparison with other methods of insulation;
• technology does not "steal" usable space in the room.

Speaking about the pros, we should also mention the disadvantages that this methodology has:

• work should be done under optimal temperature conditions outside (if the temperature is below +5 ° C, then it is almost impossible to achieve the desired result);
• each layer requires a certain time to dry, so unforeseen precipitation can negatively affect the quality of insulation in the end;
• the ingress of dust and dirt during work also negatively affects the result, therefore the surface should be protected from the wind.

Helpful advice! Insulation of the building with a wet facade should not be carried out during the rains. Therefore, it is better to plan installation in the spring or summer, when much less precipitation falls.

Wet facade technology: step by step instructions

Based on the above advantages and disadvantages, the conclusion suggests itself that this technology allows you to create high-quality thermal insulation with minimal financial investment. The main principle is a clear step-by-step in the application of all layers. The work execution technology includes three or four stages of the formation of a wet facade. Photos clearly demonstrate this. Each of the layers fulfills its functional purpose.

Plaster layer	Main works	Function performed
Adhesive or preparatory	Substrate preparation, installation of fasteners and glue priming	Determines the degree of reliability of the fastening of the future structure
Heat insulating	Fastening insulation boards with glue and dowels	Provides a degree of insulation of the walls of the building
Reinforcing	Includes installation of reinforcing mesh	Ensures the strength and reliability of the structure and serves as the basis for the final finishing layer
Decorative	Application of decorative plaster in a variety of ways and painting	Protects insulation boards from weathering and provides the outer beauty of walls

All stages perform a number of important functions that ensure the overall reliability, strength and durability of the structure, therefore each of them requires a responsible approach and detailed study.

Wet facade: installation technologypreparatory phase

Before starting work on insulation, you should take care of preparing the basic base. To this end, the walls are thoroughly cleaned and all defects are eliminated. It is necessary to cover the cracks with mortar and level the surface. If the surface is heavily soiled, it is recommended to use detergents.

Next, the surface is tested for strength. To do this, small pieces of insulation are glued to the wall. If they hold securely and do not break into pieces, then you can proceed with the installation. If they easily come off along with the top layer of the wall, then you should clean it up again.

After complete preparation of the wall, a primer is applied to it. And after drying - a layer of glue. If the surface of the house consists of a material with increased absorbency, then the soil layer should be more solid. Better to apply it twice. It is recommended to remove old plaster from window and door slopes in advance.

At the preparatory stage, you should take care of installing the profile strip. The basement profile will help to evenly distribute the load from the thermal insulation boards and protect the lower row of insulation from moisture.

Helpful advice! A smooth course of the process can be provided by a special set for facade insulation, sold in hardware stores. Ceresite adhesive mixture for wet façade has proven itself well.

The profile is mounted at a level of approximately 35-40 cm from the ground with a three-millimeter gap between the planks placed horizontally, in case temperature expansion occurs. The profile is attached directly to dowels or self-tapping screws. Their number depends on the density and weight of the selected material for thermal insulation. Most often they are placed at a distance of 15-20 cm from each other.

Insulation stage for a wet facade: work sequence

Installation of a heat-insulating layer is one of the main stages, since it is a fastening of insulation plates. The process itself requires adherence to a clear sequence and a number of rules.

Applying glue to the surface of the board. The glue solution is distributed along the perimeter of the material in a wide strip, stepping back from the edge of about 3 cm. In the middle, the glue is distributed pointwise. The main thing is that more than 40% of the slab area is covered with the adhesive mixture. If lamellar mats serve as a heat-insulating layer, then the adhesive solution must be applied over the entire surface.

Laying slabs... Insulation technology for a wet facade implies the installation of insulation "in a run" by analogy with brickwork. In this case, the tiles should be tightly pressed against each other and against the wall. Any glue that has leaked out must be removed immediately. The laying process takes place from the bottom up, starting from the basement profile. It will take 3-4 days for the glue to dry completely.

Fastening plates with dowels... At the next stage, the thermal insulation layer should be additionally fixed with dowels. Their length should be selected based on the thickness of the insulation layer, glue solution and a margin for deepening into the wall. If the degree of insulation density for a wet facade is high, then 5 cm is enough for a recess, for porous materials this figure should reach 8-9 cm. For 1 m² of surface, 7 to 15 dowels are needed. Their number depends on the density of the insulation boards, the diameter of the fasteners and the height of the insulation.

Even before installing the dowel, a nest is prepared under it. If properly fastened, the pressure sleeves will be placed close to the insulation.

Wet facade: technologylaying the reinforcing layer

A reinforced base is necessary to ensure a reliable level of adhesion of decorative plaster over insulation. For this purpose, a special mesh is attached to an adhesive base, sinking it into the middle. Installation of the reinforcing layer begins at least two days after the application of the heat-insulating layer.

Helpful advice! For reinforcement, it is recommended to use an alkaline-resistant fiberglass mesh with a durable coating. Otherwise, after a year, the reinforcing layer will begin to collapse, and the plaster will simply crumble.

First, the mesh is attached to the corner slopes in the openings of windows and doors, as well as at the joints of vertical slopes and lintels. Next, they move on to the corners of the building outside, and finally to the rest of the sections.

Related article:

The choice of the type of insulation. Features of materials, their advantages and disadvantages. The main stages of the installation of insulation.

The process itself is the application of a layer of special glue. Then a special reinforcing fiberglass mesh is gradually carefully sunk into it. It is laid with an overlap, which ensures the formation of a reliable reinforced base. Excess material is cut off. The total thickness of the reinforcing layer should be a maximum of 6 mm, while the mesh itself is located two millimeters from the surface of the insulation.

When creating a wet facade on buildings with increased loads or on basements, it is necessary to use a reinforced armor mesh that can withstand higher loads. It is the reinforcing layer that plays an important role in the strength of the entire structure. It provides wall resistance to atmospheric and mechanical influences. It is equally important that the mesh resists the alkaline effects of aggressive components contained in the plaster solution.

Wet facade plaster:decorative layer application technology

The finishing layer plays a double role, as it is responsible for the external attractiveness of the walls and at the same time serves to protect the thermal insulation layer from external negative influences. In this case, the plaster must have a certain porosity in order to allow excess condensation to pass through, providing "breathing" to the wall.

Decorative finishing is the final phase in the installation process, carried out using the wet facade technology. The plaster is applied only after the reinforcing layer has completely dried. To do this, you will have to wait about a week. Moreover, in addition to high decorative qualities, the plastered surface must meet a number of requirements:

• have a high degree of vapor permeability;
• be resistant to atmospheric influences in the form of rain, snow, fog and other precipitation, as well as to the influence of direct sunlight;
• have a high resistance to mechanical damage.

In order for the plaster to easily lay on the insulation, the plates must fit snugly together. The permissible error is a maximum of 3 mm. Otherwise, the next two layers will not be able to mask the flaws, which will affect the appearance of the entire structure. You will either have to apply a very thick layer of plaster, or put up with irregularities. This fact indicates that it is necessary to select high quality materials, as well as to use a special plaster mixture - for outdoor use.

Helpful advice! Compliance with the temperature regime affects the quality of work and the durability of the plaster service. As in the case of fixing the boards, the working mixture should be applied at a temperature of at least +5 ° C. The maximum indicator is +30 ° С, since excessive exposure to sunlight can negatively affect the quality of the plaster.

Species variety of plaster finishing wet facade

The finishing stage in the complex of works on the creation of the facade by the wet method is the application of a plaster layer. To organize the heat-insulating layer, a variety of decorative finishing techniques are used, the main ones will be discussed below.

Mineral plaster. The material is a binder mixture based on Portland cement. The main advantage of this type of coating is its high level of strength and vapor permeability. This type of finish is resistant to moisture, does not get damp and does not deteriorate. The next advantage is the affordable price. The disadvantages include a narrow selection of colors.

Silicate plaster is a kind of mineral, as it contains. Well suited for decorating aerated concrete and foam block walls, as well as for use as part of the wet facade technology, since it has a high level of vapor permeability. However, it should be borne in mind that before applying it, you will definitely need to cover the surface with a layer of a special primer.

Acrylic plaster is based on resin in the form of an aqueous dispersion. The positive qualities of the material are elasticity and a high degree of adhesion to different surfaces. To avoid cracking, the acrylic is applied in a thin layer on a reinforced fiberglass mesh treated with a sealant.

Silicone plaster has a number of unique properties, it is very flexible and viscous. Even if the building collapses, the wall covered with a silicone layer will not crack. This finish is available in a wide range of colors and is self-cleaning. Thus, the wall itself, under the influence of precipitation, will be cleared of dust and dirt.

The basis of a wet facade: materials for work

Having considered in detail all the stages of work, a novice master will be able to assess his strength in terms of an independent device of a wet facade with insulation. If a positive decision is made, then you should take care of the availability of a full arsenal of materials and tools. The list below will allow you to take into account all the details. So, this technology assumes the presence of basic materials:

1. Thermal insulation boards as a base material require a special approach in the selection. It is necessary to calculate in advance the thickness of the plates, on which the degree of thermal insulation depends, and to study the characteristics of different heaters.
2. The basement profile is selected taking into account the width and thickness of the selected insulation boards. The number is calculated based on the size of the building.
3. The mesh for the wet facade, which serves to strengthen the entire structure, is most often a roll of fiberglass. For heavily loaded buildings, more reliable grids are used.
4. Wet facade adhesive is used to fix the slabs. They select it in accordance with the selected insulation.
5. Decorative plaster is applied at the final stage. You can use ready-made formulations.

Helpful advice! In the choice of materials for the manufacture of a wet facade, first of all, they are guided by the qualities and characteristics of the selected insulation. For example, mineral wool glue is not suitable for fixing foam boards and vice versa.

Additional materials for creating a wet facade with your own hands

The above list of materials is considered basic, but far from exhaustive. If you do not take care of purchasing a complete set before making a wet facade, then a number of inconveniences and difficulties may arise in the process of project implementation.

The primer is applied at the preparatory stage in order to ensure better adhesion of the slabs to the wall. The type of primer is selected in accordance with the type of decorative plaster.

The composition for plastering the protective and reinforced layers is applied directly to the insulation, although it is often confused with decorative plaster. These are different compositions - and this should be taken into account. One of the main differences is the higher price of finishing plaster.

The paint is intended for wall decoration and serves as a certain protection against atmospheric influences. Do not neglect this material and save on it.

A necessary component is mushroom-shaped dowels. It would seem a trifle, but without them reliable fixation of the plates will not be ensured. Therefore, you should take care of purchasing them in advance.

The dowels for fixing the plinth are a separate element, very important even at the preparatory stage. The length of the dowel-nails depends on the material of the wall where the profile is attached. In the process of mounting the base, you should also take care of the presence of special elements for connection at bends and corners.

In order to purchase a complete set, manufacturers offer complex systems, which already include all the necessary materials and tools for creating a wet facade. At the same time, not every set takes into account the individual needs of the owners, and therefore, when buying such sets, you need to be careful.

Tools required for wall insulation with a wet facade

The list of tools for performing work on wet facade technology should include almost the entire arsenal of an experienced builder and a number of special devices that will greatly facilitate and speed up the process. In particular, you will need:

• a square required for marking right angles and 45 ° angles;
• building level, designed to determine the degree of deviation of parts from surfaces in the horizontal or vertical direction;
• tape measure for measuring the length and width of various materials;
• locksmith's hammer, designed to work with different materials;
• fine-toothed saw for cutting Styrofoam materials;
• construction mixer for mixing dry building mixtures of sand, plaster, glue, putty;
• rollers for priming at different stages and for painting the finishing layer of decorative plaster;
• Swiss trowels used to cover the surface with different mixtures and to smooth them;
• trowel with teeth, used for pasting and fixing by the method of "embedding" of the reinforcing layer;

• a simple plastic trowel for applying putty and plastering compounds;
• trowel for easy mixing of the solution;
• spatulas and trowels of various sizes;
• cutter for deepening the dowels when fixing the slabs to the wall;
• sealant gun.

Helpful advice! The acquisition of tools should be taken care of at the preparatory stage. This list is maximum and extensive, but it is possible that additional tools may be needed during the work.

Insulation for a wet facade: variety of materials and features of choice

Facade heaters are divided into two large groups - products from expanded polystyrene and mineral wool. Foam materials are lightweight, quick to install and have a high level of thermal protection. The main drawback of the material is its flammability. Mineral wool for a wet facade costs an order of magnitude more, while being more reliable in terms of its performance. Plates made of this material do not burn, have a high level of vapor permeability.

The density of mineral wool for a wet facade must be at least 150 kg / m³, and the tensile strength must be at least 15 kPa. It is recommended to give preference to the choice of basalt fiber slabs. As for the foam, for insulation work, you should choose a material of special purpose with low flammability. Experts do not advise in this area to use extruded polystyrene foam, which has low vapor-permeable characteristics and has poor adhesion to the adhesive solution.

Different types of insulation boards are used in different conditions. The choice is guided by the physical and chemical characteristics of the insulation, based on its specific purpose. Moreover, each group of insulation has its own classification.

Minvata for a wet facade: materials for manufacturing and their advantages

So, mineral wool slabs are the best suited for facades. This advantage is due to a number of specific positive characteristics:

• durability;

• fire resistance;
• excellent vapor permeability;
• high level of heat and sound insulation;
• resistance to chemical and biological substances;
• environmental friendliness;
• ease of installation.

In addition, certain types of cotton wool, in particular products based on phenolic binders, are distinguished by a high level of moisture resistance. The most preferred are diabase slabs or basalt wool slabs for wet façades. The price of such a heater is much higher than other analogues, but this is the case when they pay for the quality.

Since the strength of mineral wool should start from 15 kPa, and the material itself should not react with plaster, the use of fiberglass plates in this area is impractical. This is due to the fact that such mineral wool is easily destroyed in an alkaline environment and does not have sufficient tensile strength.

Fiberglass boards will begin to crumble under the influence of alkalis, which are contained in the reinforced base layer and the adhesive solution. The average pH of these materials is 12.5. The corresponding reaction does not begin immediately, but after a couple of years. Destruction is especially intense under the influence of strong winds. Thus, very quickly, a wet fiberglass facade will become unusable.

Additional qualities as criteria for choosing mineral insulation for a wet facade

An important indicator in the selection of thermal insulation boards is the moisture absorption coefficient. It is desirable that its level be at around 15%, since moisture absorbed into the material will lead to its inevitable deformation and adversely affect thermal conductivity. Slabs with a high degree of moisture absorption do not provide the required level of solidity of the facade. As a result, such a structure will not last more than two years.

Helpful advice! The density index of mineral wool of a wet facade should range from 150 to 180 kg / m³. Otherwise, the process of applying the finishing layer becomes more complicated and there is a risk of delamination of the entire thermal insulation coating of the facade.

The technology of a wet facade for mineral wool involves the selection of slabs in such a way that the degree of vapor permeability from the first (preparatory) to the last (decorative) layer gradually increases. Compliance with this requirement will provide favorable conditions and prevent condensation in the middle of the structure. In the climatic conditions of Russia, most of the time throughout the year, the temperature indicators inside houses are much higher than outside. These conditions greatly increase the likelihood of condensation occurring.

Wet foam facade: material features and requirements for its choice

Another group of heaters has a certain list of positive qualities, the main raw material for which is expanded polystyrene. It should be noted here:

• low cost;
• lightness of the material;
• high thermal and sound insulation;
• vapor permeability;
• environmental friendliness;
• ease of installation.

The list of disadvantages of foam boards significantly exceeds the similar characteristics of mineral wool. The main disadvantage is the flammability of the material. In order to eliminate this defect, manufacturers treat the insulation with special chemical agents - fire retardants. Thus, even in the event of a fire, the spread of fire will be stopped, that is, the flame can extinguish itself.

Fire safety is also ensured by special inserts made of non-combustible materials, in particular, mineral wool. The use of this method has led to the emergence of a separate composite material.

Among other disadvantages of the material is the low degree of biosecurity. Insects and even rodents can settle in the foam. Also, expanded polystyrene plates are more fragile, which creates certain problems during the installation process, and less wear-resistant in operation.

Requirements for polystyrene foam plates for a wet facade: price and quality

Before buying a material for a wet facade made of expanded polystyrene, you should study its characteristics and compliance with all requirements. It must have a tensile strength of at least 100 kPa and a density between 15 and 25 kg / m³.

Helpful advice! The choice of material in accordance with all the requirements for it and its correct installation, with strict adherence to the technology of installing a wet facade for insulation, guarantee its service life for 20-30 years. Repair of the decorative layer will have to be done a little more often, but the costs will be much less.

High-quality material can be determined even by external data. Insulation granules should adhere as closely as possible to each other and have approximately the same size. Otherwise, such foam will bring a maximum of problems, starting with the installation process and ending with direct operation. Low-quality coarse-grained material absorbs an increased amount of moisture, which, in turn, entails its deformation and leads to a loss of thermal insulation qualities and early destruction of the facade

The shape of the polystyrene foam insulation boards must be the same as that of a regular rectangle. The error is allowed no more than 2 mm per 1 m. Differences in the thickness of the insulation can be a maximum of 1 mm, and the deviation on the surface of the front plane should not exceed 0.5%. Otherwise, it is impossible to insulate the facade of the house without defects. A wet facade from the outside will have low aesthetic characteristics, and its service life will be reduced several times.

Consumption of materials for arranging a wet facade: photos of private houses

As for other types of construction work, the consumption of materials is approximately based on the required amount per 1m² of the finished wet facade. Insulating a house from the outside involves the following costs:

• primer will need about 250 milliliters per 1 m²;
• adhesive solution for fixing heat-insulating plates is spent at the rate of 10 kg per 1 m²;
• the consumption of the insulation itself with a plate thickness of at least 5 cm corresponds to the area to be insulated;
• dowels for fixing the plates will need about 5 pieces per 1 m²;
• the netting for the wet facade is consumed at the rate of 1.3 m² per 1 m²;
• plaster for the leveling layer should be purchased based on the needs of 0.3 kg per 1 m²;

• the consumption of primer for the finishing layer is approximately 0.3 kg per 1m²;
• finished decorative plaster will need about 3 kg per 1 m².

In order to correctly calculate the required amount of materials, you need to follow the instructions on the packaging of the material, and it is better to purchase ready-made kits. The Ceresit wet façade system has proven itself in this market segment. Facade insulation technology using mineral wool slabs presupposes the use of the Ceresit WM brand.

For thermal insulation using foam technology, the Ceresit wet facade is labeled VWS. Plates for thermal insulation are treated with an adhesive and fixed to the wall, a special protective layer with a reinforced fiberglass mesh is applied on top. The system of the corresponding brand contains all the necessary materials.

Components of the price of a wet facade device per m2

The price of the finished wet facade includes the total cost of preparatory, installation and decorative work. The main costs are for materials based on their cost per 1 m² for a blank wall.

Important! The main component of the total cost of a wet facade is the price of insulation, which depends on its type, density and mineral additives.

The total cost of the finished system is the total cost of the constituent components:

• adhesive mixture for fixing insulation;
• plastering solution for the base;
• mixtures for decorative plaster;
• fiberglass mesh for the reinforced layer;
• dowels and other fasteners;
• two types of primer;
• thermal insulation boards.

Ready-made systems usually do not include the cost of additional and optional parts, various profiles and auxiliary fasteners. Also, not all manufacturers offer thermal insulation materials in the complex. In this case, you should keep in mind the average cost of insulation. For example, the average price of mineral wool for a 10 cm thick wet facade is about 650 rubles. for 1 m². The cost of expanded polystyrene for the same indicators – about 250 rubles

Thus, the price of a wet facade per m² with mineral wool slabs will be about 1200 rubles. A thermal insulation system made of expanded polystyrene will cost much less - about 750 rubles. for 1 m².

Arrangement of a wet facade: the cost of work form² to order

The total costs of installing insulation and decorating it include payment for the services of craftsmen or contractors. This is if the work is not done independently. The total price ranges from 1,000 to 2,500 rubles per square meter. It all depends on the total amount of work, the type of materials and the way the finished wall is decorated. The main components and the average price for installing a wet facade are shown in the table below:

Type of work performed	Cost, rub / m2
Installation and dismantling of scaffolding for construction	130 – 150
Surface priming for deep penetration	60 – 90
Fastening the insulation with adhesive and leveling the wall	370 – 450
Installation of a reinforcing layer with a base plaster layer and flush embedding	330 – 370
Wall priming using quartz sand	65 – 75
Various types of decorative plastering	240 – 350
Stone decoration on the facade plinth	870 – 920

The wide range of prices for wet plastering of the facade is justified by the varying degrees of complexity of the decorating process. The list may also include additional work, for example, the installation of decorative elements. Their cost is calculated separately and depends on the complexity.

Additional factors affecting the cost of wet facade work

The above services and their cost are not constant. The list can be much longer, and the price increases due to the appearance of additional costs. The final price per m² of a turnkey wet facade depends on a number of additional factors. In particular, you should consider:

• initial appearance and structure of the facade;

• the presence of flaws and damage;
• the level of complexity of the work performed;
• the total number of openings for doors and windows, as well as their location;
• quality characteristics of materials and their quantity;
• total amount of work.

Helpful advice! The cost calculation is made individually for each specific case. Sometimes, even with an identical list of works and the same processing area, the price can differ significantly.

Therefore, the final cost includes additional costs. For example, labor-intensive work at high altitudes will require the installation of auxiliary assembly scaffolding. The cost of their rental depends on the height and duration of use. It should also be borne in mind that high-rise work is much more expensive, since it requires special skills and the organization of insurance. The pricing is influenced by the costs associated with delivery and the features of individual facades.

The installation of a wet system will cost an order of magnitude less than the arrangement, but its further operation will cost more. The wet facade technology is usually used to insulate private houses, and the ventilated one is used to decorate larger buildings. What this is connected with, we will consider below.

Ventilated facades: pricedictated by quality

Speaking about the scope of application of the wet facade method, it is worth mentioning such a feature as limited resistance to the effects of temperature extremes. Based on many years of research, the European Association of Plaster Type Thermal Insulation Systems has come to the conclusion that the wet facade technology is not appropriate in all climatic conditions.

Even the most reliable and expensive materials, installation in compliance with all requirements does not give a long-term guarantee of service in the conditions of the inland climate of temperate latitudes, which prevails in a significant part of the territory of Russia. The scientists of the association took grapes, or rather not the plant itself, but the cycle of its maturation, as the starting point for the application of the wet facade system. That is, in an area where climatic conditions allow the maturation of at least one of its varieties, the use of technology is advisable.

In conditions of constant rains and high humidity, for example, in close proximity to the sea, the use of this technology is undesirable. This is due to the poor moisture resistance of this type of facade. If the wall will be exposed to frequent mechanical stress, then the installation of a wet facade is also not recommended.

Based on the listed contraindications, an alternative plaster-type facade technology was invented in the form of a hinged thermal insulation system with an air gap. Simply put - a ventilated facade. What are the similarities, differences and advantages of this type of building insulation - we will figure it out further.

Helpful advice! You can check the quality of thermal insulation under a ventilated and wet facade using a thermal imager. Warm tones in the photo show heat loss, and dark tones show the heat resistance of the walls.

Comparative characteristics of ventilated and wet facades: photos of houses and buildings

The curtain system differs from the plaster system in that when installing a wet facade, plaster is applied directly to the thermal insulation layer. A ventilated facade involves the installation of a fiber cement facade panel at a certain distance from the insulation, which creates the necessary protection against atmospheric precipitation. In addition, due to the protective screen, excess moisture that appears behind the facade panel can evaporate through the air opening.

Thus, the ventilated facade has an additional, in comparison with the wet method, number of functions and provides:

• additional protection against moisture, as well as sound insulation;
• the highest degree of protection against ignition;
• coolness in the room during the summer, which allows you to save on air conditioners;
• elimination of flaws on the wall in the form of irregularities and curvatures;
• ease and speed of installation;
• a wide range of design options;
• additional thermal insulation, which is facilitated by the presence of an air cushion.

In addition, the fiber cement coating does not require additional maintenance and repair of the decorative layer after several years. The hinged structure can serve for several decades without intervention.

When solving the dilemma of which facade to choose, you can be guided by the following recommendations. A wet facade is advisable when you need to minimize the cost of finishing the building and minimize the load on the walls. In this way, you can design perfectly flat walls without observing special requirements for the strength and durability of the facade.

The curtain cladding, in turn, compensates for the unevenness of the wall and helps to hide any defects. Installation of the ventilation façade can be carried out at any time of the year, even at subzero temperatures.

Areas of application for wet façade and ventilated façades

The scope of application of ventilated facades is much wider. They are used for insulating private houses, finishing multi-storey new buildings and public buildings. The most widely used for decorating shops, cafes, shopping and entertainment centers and other public and commercial institutions.

Important! Wet facades are used for thermal insulation of low-rise buildings and utility rooms, as well as, if necessary, to save on insulation. As a budget option, this method is also applicable in the energy saving system of state institutions and public buildings.

Various materials are used in the cladding of ventilated facades, in particular:

• porcelain stoneware plates;
• panels made of aluminum and composite;
• fiber cement;
• laminate boards manufactured under high pressure.

The main advantages of a porcelain stoneware facade are its durability, varied colors and high aesthetic characteristics. But such material is quite expensive. The price of aluminum composite panels is more affordable. The material itself is universal, and thanks to a wide range of colors and structures, it allows the most daring fantasies of an architect to come true.

Fiber cement is a material imitating stone, resistant to moisture and sun. Differs in ease of installation and open mounting type. It is most often used for cladding residential buildings. Laminate panels are a new material that has various colors, textures, is resistant to weathering and fire, it is lightweight, durable and environmentally friendly. In addition, it is cheaper than porcelain stoneware counterparts.

Mineral wool wet facade technology: instructions, useful tips and secrets of the masters

If, after considering all kinds of insulation options, the choice was made in favor of a wet facade using mineral wool slabs, and it was decided to do the work independently, then it is necessary to take into account a number of secrets of the masters.

It's worth starting with the choice of material. So, on the Internet and in special literature, you can find a recommendation regarding the replacement of mineral wool with fiberglass. This is a misconception, since over time, fiberglass plates begin to sag under vibration influences, and so-called cold paths form in the insulation layer.

To achieve the maximum thermal insulation effect, it is worth taking care of not only insulation of the facade, but also of the floor and ceiling. In particular, this applies to apartments above unheated rooms or on upper floors.

Provided the correct choice of material and strict adherence to the instructions, the warranty life of the facade can reach half a century. Additional protection of the finishing layer of plaster will be provided by coating with a special paint, which will also extend its service life. For this purpose, it is worth using a water-based paint with acrylic, silicone or silicate admixtures. Its color variety includes over a thousand shades.

Helpful advice! During painting, you should look into the design and estimate documentation, where the original color of the building is indicated - the new shade must match it.

Conditions for successful insulation using the technology of installing a wet facade: video recommendations

Thermal insulation using wet technology should take place under conditions of complete protection from frost and precipitation. If the work does not require delay and its completion takes place in unfavorable conditions, then you should take care of the construction of special scaffolding and cover them with a dense film, which will provide temporary protection from wind and moisture and create a small thermal circuit.

Before starting work on the installation of a wet facade, it is necessary to tightly close all accesses to the interior of the room from the side of windows and doors. It is better to complete all internal rough work in the house before the start of insulation. On the outside wall, a number of fixtures and brackets should be placed in advance that will hold the air conditioners, cameras, ebb or downpipes.

It is necessary to work with adhesive solutions in the shade or in case of increased cloudiness, excluding as much as possible sunlight exposure to the mixture. The distance between the thermal insulation boards and the reinforcing mesh must be at least 2 mm, which allows the glue to be cast.

For the overall strength of the multi-layer structure, it takes several days for each layer to dry. Haste in this case is unacceptable. The performance characteristics of decorative plaster depend on the working conditions. Optimal prerequisites are temperatures above 5 ° С, increased cloudiness, dry calm weather.

For plaster, it is necessary to select only materials for outdoor work that can fully withstand negative influences. The upper plaster layer must have a high level of thermal conductivity and moisture resistance, be durable and resistant to mechanical, chemical and weathering.

House insulation wet facade: summarizing

The wet facade technology, although inferior in a number of performance characteristics to the ventilated facade, is the leader among the existing insulation methods. Its advantages lie in the use of modern high-quality heat-insulating materials, the service life of some of them can reach half a century. A special exterior finish with high aesthetic characteristics not only guarantees the external beauty of modern residential buildings, but also makes this technology acceptable for the restoration of architectural landmarks.

To achieve the best result, you need to trust the work of certified firms, as well as use high-quality materials from manufacturers who have proven themselves in the construction market. To prevent the occurrence of chemical reactions, it should be noted that the individual components must be compatible with each other. Each subsequent layer must have an increased level of vapor permeability in relation to the previous one. Do not forget about the strength and density of materials and their compliance with fire and environmental requirements.

The design is designed to provide a high degree of sound protection in two directions (both inside and outside the house). The quality of materials affects the longer service life of not only the insulation layer, but also the whole house, protecting the walls from precipitation and mechanical damage. The facade covers the main structure from the effects of wind, frost, pollution, ultraviolet radiation and humidity.

In conclusion, it should be noted that the use of various options for decorative plaster in the wet facade system, finishing elements and color design makes it possible to implement various style ideas on the outside of the building, which cannot be done using other methods of insulation, for example, ventilated facade technology.

The wet method gained popularity due to the minimum number of cold bridges that can be found in other finishing methods. But this factor is not considered the main advantage of the method. By giving preference to a wet facade, you can forget that condensation, due to temperature fluctuations, will accumulate on the walls in the room. To understand how to make a wet facade with your own hands, you should familiarize yourself with the step-by-step installation technology.

Preparatory work

First of all, it is very important to give a correct assessment of the base on which the technological layers will be applied.

1. The walls are cleaned of dirt and tested for adhesion, load-bearing properties and characteristics.
2. If there are damaged areas on the surface of the old finish, they are replaced. Uneven areas are leveled with a plaster.
3. The facade, which is finished with absorbent material, must be carefully primed.
4. Remove old plaster from doors and slopes.

The next stage includes the installation and installation of the profile strip. As a result of the installation of this structure, an even distribution of the load from the thermal insulation plates that are installed next will occur.

Another function of the structure is considered to be the moisture protection of the lower row of thermal insulation plates.

To perform profile mounts, you must adhere to the following nuances.

• The installation of the profile is carried out at a height of 0.4 m from the ground level. In this case, it is important to leave a small gap between the strips of 3 mm, located horizontally. This is necessary in case of thermal expansion.
• Dowels and self-tapping screws are used to fasten the profile. Their number is influenced by the mass of the thermal insulation material used. Often, one step takes no more than 20 cm. To install the profile at the joints of the corners, you can use the corner profile.

Insulation for a wet facade is mineral wool or expanded polystyrene plates. The material is fixed with a special adhesive. From the edge of the insulation (plate), you need to retreat about 3 cm and apply an adhesive composition around the perimeter with a wide strip. The space in the middle of the slab is filled with glue pointwise. The exception is lamellar mats, the surface of which is completely covered with an adhesive solution.

In the process of installing a wet facade, builders use a razor-sharp method of laying slabs. Plates need to be pressed not only to the wall surface, but also to adjacent tiles. It is important to remove any glue that comes out quickly. Insulation is placed in rows, starting from the basement profile, moving up from the bottom row.

A few days later, after the adhesive has dried, the thermal insulation needs additional reinforcement with expansion dowels. In this case, the length of the dowels is taken into account, which depends on the thickness of the insulation, adhesive solution and the coating that was previously on the facade.

Also, do not forget about deepening the dowels into the wall.

• Basically, for solid walls, the depth of deepening can fluctuate within 5‒6 cm. Porous walls require a depth of 9 cm.
• Considering the mass of the insulation layer, its thickness, the height of the plates and the diameter of the insulation, 5 to 15 pieces will be needed per square meter of surface. dowels. Before attaching the dowel, a hole is drilled under it. The pressure sleeves must be positioned flush with the insulation layer.

How to make a reinforcement layer

Having completed the fastening of the thermal insulation, you can start installing the reinforcing layer only after a few days.

First of all, attention is paid to the corner bevels of windows and doors, as well as the joints of vertical bevels, taking into account the lintels. They also process the outer corners of the structure, after which they begin to process the flat surface of the walls.

To understand how to make your own reinforcing layer, you can read the recommendations of specialists.

• An adhesive composition is applied to the heat-insulating layer, into which a special reinforcing mesh made of fiberglass is embedded.
• A covering layer identical in quality and composition is applied to the surface of the reinforcing mesh.
• The result should be a layer that is no more than 6 mm thick. And the mesh of the layer should be at least 3 mm from the surface.

We carry out plastering at home

You need to wait until the reinforcing layer dries well. Drying time depends on the season and temperature. It should be noted that facade plaster is moisture-resistant, vapor-permeable, and highly resistant to atmospheric extremes and climatic conditions. But the quality of work is influenced by the conditions in which the work was performed. It is best to install a wet facade at a temperature that ranges from + 6ºC to + 32ºC. The presence of a shadow is also important. If the work is done on the sunny side, you can create it artificially.

You should not proceed with the installation in strong winds and atmospheric precipitation.

The nuances of arranging the basement

Regarding the basement floor, some installation features should be noted:

• Before starting work, it is necessary to waterproof the basement section of the wall, as well as the territory of the site that is adjacent to it.
• When choosing a heater, it is important to give preference to a material that has a reduced percentage of moisture permeability.
• Dowels are used to strengthen the thermal insulation slabs only at a certain height, which is 0.3 m from the ground surface.
• For basement walls, it is important to perform reinforcement in two layers.
• The area around the walls and the basement floor itself should be covered with ceramic or special facade slabs, which are based on natural stone. An alternative can be mosaic plaster, or the facade can be simply painted.
• Finishing is carried out after the facade insulation work has been completed, the roof, windows and doors have been installed, the electrical cable has been installed, and the house has passed the stage of complete shrinkage.

Video

Read the instructions for installing a plaster (wet) facade:

This video shows how the corners of the decorative elements of a wet façade are reinforced:

Photo

Is a generalized name for all finishing works in which liquid or viscous adhesive mixtures are used to fix the facing material.

In this case, it does not matter what kind of glue the installation was carried out - ready-made purchased or mixed immediately before use. The most common type of wet facade technique is decorative plaster, which recently is often done simultaneously with insulation. In this technology, the insulating material is also attached by means of adhesive solutions.

The main advantage of a wet facade is the minimized number of cold bridges and the removal of the dew point outside the room, due to which condensation does not form inside the building.

This is not the only advantage of choosing a wet facade finish. What else does this technology have to offer? Let's consider:

1. Installation of a wet facade is not a difficult job. It can be made by any craftsman, even once who has worked with plaster.
2. The cost of materials for this technology is low. If you choose polystyrene as insulation and slightly bother over the plaster, then you can invest in 300-600 rubles per square meter of finishing.
3. Devices of a wet facade for insulation allow to reduce the thickness of the outer walls and save on construction.
4. This finish does not burden the facade walls, therefore it can be used for any type of foundation and wall material.
5. Since the insulation is mounted outside the building, it does not take away valuable centimeters from the living space.
6. This method is not limited to the decorative solution of the facade: thanks to the facade plaster, you can make the most different texture and color of the walls, and if the plaster mixture is white, then you can additionally paint it using the most diverse palette of facade paints. The wet method also involves the use of ceramic tiles and artificial stone, the variations of which are difficult to count.

Installation features

The installation of a wet facade insulation system must take place under certain climatic conditions and with a careful selection of materials, otherwise neither the decoration nor the thermal insulation will be able to serve for a long time.

Be sure to consider that:

1. Wet finishing can only be done during the warm season. This is due to the fact that it is impossible to work with cement slurries at low temperatures. According to the norms, if the temperature drops to +5 and below, then the work is postponed "until better times", or an insulating canopy is created that is able to maintain the optimum temperature.
2. Rainy weather is also not suitable for installing the system. If you do not want to get a finish with spots and stains as a result, then it is better to transfer the insulation and cladding until clear sunny days appear.
3. Decorative plaster can last about 30 years if the climate in your area does not have dramatic changes in seasonal and daytime temperatures. The sharper the differences, the faster the decorative layer is destroyed.

This technology is so simple that it is almost impossible to make mistakes during installation. But the quality of the finish can be greatly affected by the wrong selection of materials.

Choice of plaster

Wet facade installation technologies of which allow the use of different types of decorative plaster, which to one degree or another correspond to the technological process:

• Mineral is a budget plaster that has good vapor permeability and low moisture absorption. The price fluctuates due to the presence of additives in the composition of different costs, but still be at the level of available ones.
• Silicate - with good vapor permeability. Due to poor adhesion, it cannot be used without a special primer.
• Silicone: elasticity, vapor permeability, good adhesive make this plaster almost ideal if it were low cost.
• Acrylic: despite its excellent moisture resistance, this plaster has a significant disadvantage - low vapor permeability, which makes it unsuitable for some types of wet facade systems.

One of the most economical options for the effects of decorative plaster is bark beetle, but it is not as easy to apply as it seems at first glance.

Which insulation is better for technology

For a wet facade system, only tiled insulation can be used in order to end up with a reliable, uniform thermal insulation and decorative layer.

That is, he chooses among mineral wool and expanded polystyrene heat insulators. When selecting, we pay attention to the following qualities of insulation for a wet facade:

• Water vapor permeability;
• Moisture absorption;
• Density.

Water vapor permeability should not be low. It is desirable that it gradually increase from the inside to the outside. Condensation can then be avoided right in the middle of the wet facade insulation system. Excess moisture has a destructive effect on thermal insulation and finishing. For the same reason, it is impossible to take insulation materials with high moisture absorption for work.

Therefore, among mineral wool slabs, we stop at basalt or diabase ones. Stone wool is quite moisture resistant and has excellent vapor permeability, but its density should not be lower than 90 kg / m2, otherwise there will be difficulties and the insulation may stratify after a few years. The permissible density of mineral wool slabs for plastering is 180 kg / m2.

Attention! Thermal insulation of facades with mineral wool slabs "on wet" categorically prohibits the use of acrylic plasters.

Polyfoam and extruded polystyrene foam practically do not absorb moisture, and at low density they are also convenient for applying plasters. But they work preferably with, since it has at least some vapor permeability, and extruded polystyrene foam simply does not.

Foam plastics benefit from stone wool not only in terms of density, but also in terms of thermal conductivity: a 50 mm thick expanded polystyrene board has the same thermal insulation qualities as a 110 mm thick wadded board.

There is and is a slight advantage of basalt fiber in terms of vapor permeability, then it is overshadowed by the difference in price between the first and second options. It is precisely because of the availability and good compliance with the wet facade technology that polystyrene is more often chosen for work.

Attention! Adhesive mixtures for the installation of mineral wool boards and foam plastic differ in composition. Therefore, for each insulation, a glue that is suitable for its characteristics is taken.

We do the finishing "wet" facade in stages

1. The device of a wet facade begins with the preparation of the facade surface: cleaning from dirt, leveling the walls and filling cracks with a putty or adhesive mixture, a primer.
2. Then follows the installation of the basement profile with self-tapping screws on the upper level of the basement. The basement itself is rarely insulated. To highlight the basement of the building, cladding is made with artificial or natural stone.
3. Insulation is carried out from the bottom up, starting from the level of the basement profile. An adhesive solution is applied to the slabs: along the edges - in a continuous layer, in the middle - by the dot method. Additional fastening is carried out with disc dowels after 3 days, given for the glue setting.
4. This is followed by a reinforcing layer: an adhesive solution is applied, into which a strong one is pressed. Special reinforcing corners are attached at the corners. This is the penultimate stage of finishing the wet facade. The technology requires a break of about 3–7 days for the reinforcing layer to set, after which you can start applying the decor.
5. Decorative plaster is applied strictly according to the manufacturer's instructions. If painting is required, then it is made in two layers, alternating vertical and horizontal application. In this case, the paint layer will come out uniform, without any transitions in tonality.

The video below shows the “wet facade” insulation technology.

If it is planned to install a heater under a tile or artificial stone, then waterproofing of this area is additionally carried out.

When the term “wet facade” is mentioned, the image of a facade abundantly soaked in water immediately appears in the imagination. But in fact, this method of finishing, of course, has nothing to do with such an association.

This phrase is just one of the attributes of figurative folk speech and cannot be found in textbooks. The question "what is a wet facade?" will be disclosed in detail in the material below.

What it is?

It is the latest building technique used as a decoration and thermal insulation method for the exterior walls of a house.

This name stuck to her for a reason the use of liquid or semi-liquid adhesive solutions when installing materials that are part of the finishing coating.

Technology provides protection for living quarters from the occurrence of the dew point, which, as a result of the construction of a wet facade, is carried out.

Even with significant abrupt changes and contrast of external and internal temperatures the occurrence of condensation in the room will be completely excluded.

Advantages and disadvantages

The main advantage of using this technology is combination of decoration and thermal insulation functions.

To this you can also add more a number of positive points:

Now for the disadvantages:

• the main disadvantage is that insulation work cannot be performed at an air temperature below 5 ° C, in case of extreme need, when insulating in a cold period, heat guns and scaffolding covered with polyethylene should be used;
• it is not necessary to carry out installation work at high air humidity - a "wet facade" does not tolerate such conditions;
• the plastered surface needs to be protected from the wind, since dust and dirt settling on a fresh finish can significantly damage the appearance of the coating.

When choosing a material you can be guided by four main criteria:

1. Price. In this regard, polystyrene wins, as it is a cheaper material.
2. Water vapor permeability. This property is inherent in mineral wool, which allows the walls of the house to "breathe". Styrofoam does not have this quality.
3. The complexity of the work. Foam is easiest to work with due to the higher rigidity of the material.
4. Fire hazard. Foam plates are flammable, therefore they need to be treated with fire retardants. Basalt wool does not burn and is able to withstand temperatures up to 1000 degrees.

Do-it-yourself installation of a wet facade "Ceresit" for insulation

Ceresit system("Ceresit") is built on the basis of materials from the well-known manufacturer of the same name, which include a primer, putty and plaster.

This approach allows you to achieve high level of thermal conductivity and waterproofing. The installation of the system consists of several stages, which are worth considering in detail.

Wall preparation

When carrying out this procedure all flaws on the wall are eliminated... Cracks need to be repaired with a solution, after which the surface is cleaned of contamination.

Further check the surface for strength... This can be done with pieces of styrofoam that are glued to the wall in different places. If the glued pieces are difficult to come off after the glue has completely dried, then the surface is ready for further work and can be treated with a primer.

Plinth profile installation

This procedure is necessary so that the thermal insulation material does not slip during installation. The profile is fixed at the border of the facade and the base and must be installed in a strictly horizontal position.

Fixed to the wall with dowels... After that, you can start laying the insulation.

Installation of mineral wool

Mineral wool slabs are mounted on the wall with glue. Material placement starts from the corner at home. One side of the board is lubricated around the perimeter with a layer of adhesive mixture about 10 cm wide. The glue is also applied to the middle of the material, but pointwise.

Plates are stacked end-to-end (see photo), excess adhesive is removed... The seams between the slabs of each row must not match.

At the end of the installation of the insulation you need to give the glue three days to dry, after which you should additionally secure the material with dowels "fungi".

Reinforcing mesh laying

Reinforcing mesh serves as the basis for the next layer of the facade and provides a high-quality hitch.

To perform this procedure correctly you should adhere to the following rules:

• the layer must be at least 0.5 cm thick;
• the composition of the reinforcing layer should include two adhesive layers, between which the mesh is laid;
• lay the mesh and apply the second layer of glue before the first layer dries;
• the hardened surface is covered with two layers of soil.

Finishing

After complete drying of the reinforcing layer (3-7 days) decorative coating is applied.

The thin-layer putty is applied evenly with a half-tape, which is held at an angle.

The applied mixture is additionally smoothed. Dried plaster after half an hour processed with a plastic float, giving the surface the desired texture.

This procedure is the final step in the construction of a wet façade.

Wet facade device: video instruction.

February 26, 2018
Specialization: facade decoration, interior decoration, construction of summer cottages, garages. The experience of an amateur gardener and gardener. He also has experience in repairing cars and motorcycles. Hobbies: playing guitar and much more, for which there is not enough time :)

Wall decoration using the "wet facade" technology is very simple on the one hand, but on the other, it contains a lot of important subtleties. Therefore, I suggest that you familiarize yourself with all the nuances of its device. This information will help you insulate the building with high quality.

What is a wet facade

A wet facade is called the decoration of the outer walls on top of the insulation. The name itself implies the use of liquid finishing materials, which include wet plaster. The latter is a dry mixture that requires mixing with water before use.

The wet facade cake consists of several layers:

• Insulation. It is also glued to the walls with a wet method, i.e. using liquid glue. True, the plates are additionally fixed with special disc dowels;
• Reinforcement layer. It is a layer of glue several millimeters thick, which is reinforced with fiberglass mesh. The glue functions as a rough plaster;

• Decorative layer... It is a decorative plaster that provides the surface of the walls with a specific texture and texture. Paint is applied over the plaster layer, unless, of course, the plaster itself is tinted.

Thermal insulation using this technology does not require large financial costs, since wet finishing materials are cheaper than panels or, for example, facing bricks. At the same time, the installation is simple and fast enough.

Choosing thermal insulation

For the installation of a wet facade, a dense and durable slab insulation is required, since it has to perform a load-bearing function - to withstand the wind load, as well as the load from the plaster layer. In addition, the insulation must withstand shock loads, since it is protected only by a thin layer of glue and a reinforcing mesh.

Therefore, only the following thermal insulation materials can be used:

• Styrofoam (expanded polystyrene). It can be said to be a classic material for a wet facade, as it is inexpensive and effective. True, only slabs with a density of at least 25 kg / m3 are suitable for these purposes;

• Mineral wool. Another popular material that is fire resistant, environmentally friendly and vapor permeable. Mineral wool must have a density of at least 125 kg / m3

You can also use extruded polystyrene foam. It is stronger and more durable than foam, but has poor adhesion. For a long time it was believed that walls should not be insulated with this material for wet finishing.

However, the problem of poor adhesion was solved by mechanical treatment of the surface with sandpaper or a float. Some manufacturers produce boards with an initially rough surface.

Installation technology

Materials (edit)

In addition to insulation, the following materials should be prepared:

• Adhesive for thermal insulation boards;
• Disc dowels - the length should be 4-5 cm more than the thickness of the insulation;
• Primer;
• Reinforcing fiberglass mesh;
• Plaster corners;
• Starting bar;
• Decorative plaster;
• Facade paint.

The thickness of the insulating layer must be at least 5-7 centimeters. To achieve the best effect, it is advisable to glue boards with a thickness of 10 cm.

Preparing the walls

A wet façade requires high-quality surface preparation. This operation is performed like this:

Illustrations	Actions
	Dismantling of attachments. Dismantle all elements on the facade surface that may interfere with the installation of the insulation - window sills, cornices, antennas, etc.
	Removing plaster. If the walls are covered with plaster that has begun to flake off and fall off, it must be removed.
	Padding: Shake the facade primer and pour into a flat container; Apply the primer to the wall surface in a thin layer with a brush, roller or spray; Wait for the surface to dry and repeat the procedure.

Insulation installation

Now you can start installing the insulation. Step-by-step instructions for performing this operation look like this:

Illustrations	Actions
	Installation of the starting plate. Along the perimeter of the building, it is necessary to fix the basement profile, from which the installation of the insulation begins. Use dowels to fix the profile. In the process of fastening the profile, be sure to make sure that it does not deviate from the horizontal.
	Glue preparation: Pour room temperature water into the bucket; Gradually pour the adhesive into a bucket and mix with a mixer; Bring the glue to a doughy consistency.
	Bonding boards of the first row: Apply glue to the board. If the quality of the walls allows, cover the entire surface of the insulation with a thin layer of glue using a trowel. If the walls are uneven, apply the glue in lumps; Insert the slab into the starter bar, press it against the wall and align with the vertical using a level; Apply glue to the second board, position it against the first and glue. Thus, glue over the entire first row.
	Installation of subsequent rows. Start with half of the slab for the second row to offset the vertical joints. Also, tie the slabs in the corner. If the slab of the first row was flush with the wall, then the slab of the second row should protrude at a distance equal to the thickness of the insulation. Thus, cover all walls with insulation.
	Pasting of openings. Cover the openings with insulation 1-2 cm thick.
	Installation of dowels: Use a puncher and drill a hole through the insulation to the depth of the dowel plus 5-10 mm; Insert the poppet sleeve into the hole; Drive the provided nail into the sleeve. Finish it so that the head of the sleeve goes into the foam by a few millimeters. Install dowels at the corners of each plate, as well as one dowel in the center. Plates located on the slopes do not need to be fastened with dowels. The installation of the dowels can only be done after the glue has completely hardened.

Preparation for reinforcement

Before proceeding with the finishing, you must complete the following steps:

Illustrations	Actions
	Surface leveling: Apply a level and rule to the surface of the walls; Rub the irregularities with a special float.
	Insulation of cracks. Blow out the cracks with glue foam or fill in with scraps of insulation.
	Bonding corners. Glue the perforated aluminum corners around the perimeter of the openings and on all outside corners. For gluing the corners, an adhesive mixture is used, with which insulation plates are glued.

If it is possible to reinforce with foam without priming, then before reinforcing extruded polystyrene foam, the surface must be coated with an adhesive primer.

Reinforcement

Rough finishing of the walls pasted over with insulation is carried out as follows:

Illustrations	Actions
	Reinforcement of openings: Cut the reinforcement mesh according to the dimensions of the slopes, taking into account the curvature at the corners (about 10 cm); Cover the slope surface with glue using a trowel or trowel; Attach mesh; Iron the mesh with a spatula so that it is completely covered with glue; Thus, reinforce all slopes; After the surface has hardened, apply another layer of glue about 2-3 mm thick. To make the glue fit better on the mineral wool and not roll, slightly moisten the surface with a sprayer.
	Wall reinforcement: Reinforce the walls in the same way as the slopes - first apply glue, then glue the mesh. Be sure to provide overlap and curl at the corners; After the surface has hardened, apply another layer of glue.

Decorative plastering

Now you can proceed to the final stage - decorative plaster:

Illustrations	Actions
	Padding. Cover the facade with soil as described above, i.e. in two passes.
	Decorative plaster application: Mix the mixture with water according to the instructions on the package; Apply the coating in a thin layer using a trowel; When the decorative plaster begins to harden, trowel it down with a trowel.
	Painting. If the plaster is not tinted, paint it as follows: Prepare the paint - stir and pour into a flat container; Use a facade roller and apply a thin layer of paint; Wait for the coating to dry and apply a second coat of paint.

This completes the installation of the wet facade.

Output

Now you are familiar with the technology of installing a wet facade and you can insulate your home on your own. And if you have any difficulties, write comments, and I will be happy to help with advice.