Many home craftsmen and professional companies are increasingly using so-called wet facades to decorate their homes. What it is, you need to know before you think about whether it’s worth applying for an update external walls this technology at home. Wet facade it is equipped with the use of a heat insulator, in the role of which extruded polystyrene foam or other material with qualities is used that will give the system strength and resistance to external influences.

Description

Wet facade, as its name implies, involves the use of a wet method of applying external finishing. That is why any façade that uses an adhesive composition or a wet mixture can be called wet.

Semi-liquid adhesive compositions can also be used in the work, which are quite possible to purchase in finished form. You can buy it already ready mixture or one that involves additional dissolution before starting work.

wet type

The wet facade must contain three main layers, one of which is heat-insulating, fixed to the rough surface with glue. As a rule, a polymer cement solution is used as an adhesive composition. Among its positive features one can highlight high-quality adhesion to the load-bearing surface and any type of insulation. Polystyrene foam can be used as insulation. But it is also used; for carrying out this kind of work it is necessary to purchase it in the form of rigid slabs.

A wet facade assumes the presence of another layer, which acts as base material. It is based on a rigid layer designed to protect the thermal insulation from external mechanical influences. Exactly on base layer and fastening is done decorative covering. Traditionally it is customary to use it in tandem with reinforcing mesh. In the vast majority of cases, the solution is based on fiberglass with impregnation, which protects against alkali.

If you have chosen a wet facade, the installation technology assumes that it also contains an external decorative coating. The most popular material is textured plaster. It is quite easy to apply and has a low cost. In addition, it is also valuable that it does not affect the walls and façade of the building with its weight, since its mass is insignificant.

Advantages of a wet facade

If you are interested in wet facades, what they are, you need to find out more. It is worth paying attention to the positive features of this finishing method. Among the most important, as already mentioned, is cost. So, if you do the work yourself, then square meter finishing will cost approximately 300-800 rubles, the final price will be affected by the cost of the plaster and thermal insulation used in the work. Another advantage is the fairly extensive color scheme. This also applies to invoice solutions. But if there is a need to change the color, the surface can be painted in any shade.

Installation of a wet facade requires the presence of insulating material, which allows you to obtain practical finishing with thermal insulation characteristics. If you are just starting to build a house and know that the facade will be finished wet method, then you can save on work, because the walls will then be insulated. And you can really save on the building materials themselves, since the thickness of the walls can be such that it is enough to ensure strength.

When considering wet facades, what they are, it is imperative to understand and take into account that such systems have little weight, despite their multi-layer nature. This indicates the possibility of thermally insulating a capital building with stone walls. Frame houses that are installed on a columnar or strip foundation can also be improved in this way. Due to the fact that the insulation will be reinforced outside the living space, effective area buildings will remain unchanged.

Dew point offset

When you consider wet facades, what they are is important to understand. After all, if you do not take into account all the features of such a system, then you can make your choice in favor of a less profitable and not so attractive solution for your home.

It is also important to take into account that the location of the insulation outside the external walls is very advisable, because this allows you to move the dew point beyond the main walls. Whereas if thermal insulation is made with inside premises, you will have to think about combating the resulting condensation and moisture from outside sealing material. All these circumstances indicate that a wet facade, work on which will be done independently, does not imply problems associated with the formation of fungus and mold on the walls.

Disadvantages of a wet facade

It must be remembered that everything has its drawbacks, and the façade arrangement system is no exception. wet technology. Such work can only be done in the warm season. In addition, bad weather can also prevent the continuation of work, which can delay the completion of the process for some time. If this requirement is not taken into account, then the surface of the façade will remain dirty spots. In addition, the approximate service life of a wet facade does not exceed 30 years, which is significantly less compared to other types of external wall construction.

During operation, storage duration original form walls can be shortened, this can be affected by temperature changes. Thus, if there is a large difference between their values, this fact can greatly affect the durability of the facade.

wet facade

A wet facade, the installation technology of which requires the use of several layers, may involve the use of not only adhesive mixtures. If there is a need to reduce the cost of work, then you can use less expensive analogues, however, when purchasing, it is important to take into account that the adhesive composition must have certain characteristics, among them excellent steam permeability, as well as resistance to frost and external influences. The adhesive mixture can not only strengthen the material, but also level the surface.

The “wet facade” system, as mentioned above, can be based on slabs mineral wool or expanded polystyrene. If we compare, the first option has excellent thermal insulation qualities, are especially good. But today many people refuse fiberglass, since it is not so strong, which makes it vulnerable.

Technical characteristics of the thermal insulation layer

If you decide to choose a wet facade for arranging it, then you need to purchase one that has a tensile strength of 15 kPa or higher. If you use a material that does not have such impressive strength, then the facade will not endure wind loads.

As for density, it should vary between 130-180 kg/m3. This requirement must be taken into account to ensure that the layers of plaster do not crumble. This material must also have alkali resistance, which is equal to 12.5 pH or higher. This requirement is due to the fact that an alkaline reaction occurs between the materials, which can damage the thermal insulation. The thickness of the slabs is also important. The difference between them should not be more than 3 mm. This is necessary to ensure that the facade is aesthetically pleasing. Water absorption of the material should not exceed 1.5% of the volume of insulation.

Characteristics of the polystyrene foam layer

If you are installing a wet façade, it is important to choose the right materials. So, if the insulation layer is based on polystyrene foam, then certain requirements are imposed on it in terms of strength, which cannot be less than 100 kPa. As for density, this figure can vary from 15 to 25 kg/m3. It is also important here Smooth surface, deviation is allowed no more than 0.5%.

Characteristics of the plaster layer and external coating

It is important to take into account that the plaster layer must also meet certain characteristics. Thus, the density of the layer should be in the range from 145 to 200 g/m2, while the thickness should be approximately 3-5 mm.

It is important to choose for the decorative layer the right material, which must necessarily have increased vapor permeability characteristics. But it is recommended to choose a density equivalent to 1.6 g/m3. If you comply with all these requirements when choosing a material, then the wet facade will meet all the characteristics quality system, which will last for as long as necessary.

The “wet facade” finish today continues to be popular for the reason that the house looks very presentable after the work, and the costs do not break the owners’ pockets.

It is a simpler technology for exterior finishing than the so-called “wet facade”.
Working with a wet facade is more difficult, but the result is worth it. What to pay attention to and how to make the facade beautiful and warm - read in this article.

Wet facade: materials, technology, features

Wet facade is called so because a significant part of the work involves the use of solutions. Finishing layer, in particular, it is applied with mixtures, the composition and characteristics of which make it possible to create colorful solutions that are unique in texture. For façade insulation they are used classic materials. Let's start with their choice.

Choice of insulation

When creating a wet facade, foam or mineral wool is used. The foam must be marked PSBS-25-F(the letter “F” means facade, and the number 25 is the weight of one cubic meter, that is, this is the density of the material). Well, if you are going to use cotton wool, take it with a density of 80 -100 kg per cubic meter and also only that which is marked as suitable for insulating a wet facade.

What is better - polystyrene foam or mineral wool?

The first difference noticeable to everyone is the price. Polystyrene foam is approximately 2-2.5 times cheaper than mineral wool. The next plus is the ease of working with this material, because it can be cut at any angle, sanded and created any planes, with protrusions and cornices.
Mineral wool also has advantages. The first is the ability to attach it to rounded walls. Another plus, and the most significant one, is vapor permeability, and in this it is significantly superior to foam. In addition, cotton wool is an excellent soundproofing material.

Vapor permeability is a very important factor. Insulation should not only keep the house warm, it should also provide evaporation excess moisture from the walls. If the facade does not provide proper moisture drainage, the walls will freeze, which will lead to rapid wear and tear of both the building itself and its facade.
Online calculators allow you to calculate required thickness walls and insulation in the facade. And although they won’t clarify everything completely, you will receive an approximate figure on which you will rely in a conversation with the contractor and will not allow yourself to be deceived.

Let's give an example. You live in the Moscow region, in a house made of foam block with walls 20 cm thick, which needs to be insulated. If you add 10cm of polystyrene foam, the wall will be very warm, but condensation will probably accumulate between the foam block and the insulation.

Let's add another 10 cm and we get warm wall, at which the dew point will go into the insulation.

A similar calculation with mineral wool shows that it will give a similar result even with a 10-centimeter layer. Considering more easy installation and to gain in price (you will need twice as much polystyrene foam as cotton wool, there is no saving), it is better to choose mineral wool.

Stages of work

The plan is simple:

1. The insulation is attached to the wall.
2. A base reinforcing layer is created on the insulation.
3. Decorative coating is applied.

As a result, we get a fur coat like this:
*
Now, let's take a closer look at each of the stages.

Attaching the insulation

Here are three basics high-quality installation insulation:

1. The bottom layer of insulation rests on a metal profile that encircles the perimeter of the building.
2. The insulation is glued to the wall with cement or polyurethane based glue;
3. Dowels with “fungi” “insure” the adhesive joint, pressing the insulation to the wall.

Builders and installers often neglect metal profile, because of its high cost, plus it needs to be closed somehow at the end. But this point cannot be omitted. The wall may “slide”.

Glue

The adhesive is chosen according to the type of wall. For block or brick masonry, use glue on cement based prepared from a dry mixture. Polyurethane glue can be applied to a perfectly flat, plastered or tiled surface. It reminds polyurethane foam and is applied using a special gun from a cylinder.
Cement adhesive is good for uneven surfaces, since it allows you to smooth out various irregularities, it is suitable for working with both cotton wool and foam plastic. And polyurethane is only for foam.

Dowels

Dowels can also be expensive and bad. It is better to buy dowels with stainless steel cores; cheap plastic ones do not fix securely. To attach to a frame wall, you can use cheap ones, but they will need modification (you cut off the stem of the “mushroom” and insert a long self-tapping screw into the “head”). It's better to buy a good one right away.

A dowel with a metal rod looks like this:

Before you begin attaching the insulation, clean the wall and prime it. Be sure to follow the directions on the glue package.

Before attaching mineral wool mats to the wall, they need to be primed and allowed to dry, but foam plastic can be glued immediately.

Regardless of which insulation you choose, drive the dowels until completely dry adhesive layer, wait a day. This way you can make sure that all the insulation is stuck and will not damage adhesive layer when attaching “fungi”.
When installing insulation on frame walls With the help of foam glue, you don’t need to wait a whole day. Just apply the insulation and immediately secure it with a dowel. Upon completion of installation, check the level of the coating. Sand any protruding parts as necessary.

Creating a Base Layer

A wet façade can last for many years, or it may begin to crack after the second winter. This is largely due to proper preparation base layer, and it, in turn, depends on the quality of the materials you use. Therefore, buy only the best best glue and reinforcing fiberglass mesh - it is from these two components that the base layer is created.
The mesh can be different, usually taken with a density of 160-185 g per square meter. Be sure to pay attention to the label - it states that this mesh is intended for facades and is alkali-resistant. Resistance to alkaline environment extremely important, since cement adhesive can destroy the mesh. If there is no marking, place a piece of mesh in the solution laundry soap. Poor quality will begin to creep apart within a few hours.

To create a reinforcing layer, you will need a notched trowel - use it to apply glue to the insulation and press a section of the mesh into it. Then level with a flat spatula and move on to the next section. Make sure that the surface is as smooth as possible. Stripes from the edges of the spatula are removed with sandpaper the next day after drying.

If you still decide to save money on a metal profile, be sure to place the edge of the mesh under the bottom of the insulation. To do this, before attaching the bottom layer of insulation, glue the edge of the reinforcing mesh to the wall, then lay the insulation, then wrap the mesh over the insulation and glue it to it.
This can be seen more clearly by looking at the image:

IN summer time protect the wall by creating a shelter from the sun and water. This is necessary, since the glue for the reinforcing layer in the heat will dry faster than necessary, which will make working with it very labor-intensive. Well, rain is dangerous for the layer while it is drying.

After the base coat has dried and sanded, apply primer. It can be silicate or acrylic, depending on the type of finishing coating.

Finish coating

The easiest way to cover the facade water-based paint , moreover, it can be applied directly to the reinforcing layer; it can be applied after priming it with it, diluted with water.

Can be used cement-based mineral plaster. It allows moisture to pass through well, preventing it from accumulating inside the walls and insulation, is inexpensive and is prepared from a dry mixture. It can be used anywhere, the only exception being frame houses. After drying, the plaster can be given any color; it itself is light. To give the surface a certain texture, use the filler suggested by the manufacturer. For example, here are designs in the style of “bark beetle” and “fur coat”.

For mineral plaster, you can use two types of primer - silicate or “concrete contact”.

If you have frame house– use acrylic plaster, which withstands wall deformation and vibration. Acrylic plaster is elastic and also has excellent water repellent properties. It is painted directly before use in any desired color, although if you want to paint it after application, please do so, and an acrylic primer with quartz sand is used as a primer for such plaster.

You can also use silicate plaster– it has all the advantages of acrylic and good vapor permeability.

More advanced option - silicone and silicate-silicone, which, among other things, are also self-cleaning (at least that’s what the manufacturer says).

Fillers for creating texture, used in acrylic, silicate and silicate-silicone plasters, are small pieces of granite 1-3 mm in size. Thanks to such pieces, the surface will look like an orange peel, but if after application you go over it with a special roller or grater, you will get a unique texture.

Well, in conclusion, we’ll tell you about the most expensive plasters - mosaic. Binder composition in this case, transparent resins are used, and the texture filler is colored stone chips, which should be selected by color. When the plaster hardens, it will turn into a glass-like surface that is easy to clean and has a wonderful appearance. Its disadvantage is the high price, and not everyone can afford to decorate the entire facade with such material. Such plaster is used not only in exterior decoration, but also in the internal.

We hope you now know everything to prepare for a meeting with a “wet facade”. Have a beautiful home!

Even at the design stage of a building for various purposes, it is necessary to resolve a number of issues. Therefore, when it comes to exterior finishing, it is necessary to decide on the choice: a wet façade or a ventilated one. To do this, you need to understand the features of each option.

Pros and cons of a wet facade

Finishing the facade using “wet” technology consists of the following stages:

1. Installation of insulation, which is attached to outer part buildings using a special adhesive composition. Additionally, the material is also fixed with dowels. Options thermal insulation material there may be several: polystyrene foam, mineral wool (pressed), polystyrene foam.
2. Reinforcement, for which fine mesh and adhesive composition are used.
3. Finishing using plaster mixtures. For example, cement, decorative, textured.

The listed levels of finishing are gradually applied to the façade, ultimately forming a durable structure. In addition, the wet facade also has a number of other advantages:

• fire safety, due to the fact that the plaster and glue used are not susceptible to fire and become protection for the lower thermal insulation layer;
• small weight;
• simplicity of finishing work.

The disadvantage of façade finishing made using “wet” technology is the high cost of the materials used. In addition, the work will require a perfectly flat surface. In the absence of this, the cost of finishing increases, since the walls will have to be leveled during the process.

Pros and cons of a ventilated façade

A ventilated facade is a structure that is installed on the surface using specially designed guide profiles and brackets. Due to the use of a large number of building elements (anchors, profiles), the work will require a person with skills in this area. No adhesives are used here for fastening; everything is fixed mechanically.

In general, the technology for installing a ventilated facade is as follows:

1. Brackets are fixed on the facade surface.
2. Thermal insulation material is being installed, for fastening which disc-shaped dowels are used. Mineral wool slabs, which are characterized by good vapor permeability, are usually used as thermal insulation.
3. A film is laid on top of the thermal insulation layer.
4. Next, the guide profiles of the horizontal and vertical type, serving as the basis for laying the final decorative layer. Panels made of fireproof plastic, galvanized metal or porcelain stoneware can be used here.

The positive qualities of a ventilated facade include:

• the ability to mask all wall irregularities and other defects;
• good level of thermal insulation and sound insulation;
• long service life.

It is worth paying attention to the fact that a ventilated facade will be fireproof only if only mineral materials. The use of polystyrene foam or expanded polystyrene is not recommended due to its high flammability.

The disadvantages of a ventilated facade include the fact that when using high-quality materials, the cost of finishing as a whole will be very high. And it is better to trust the work only to qualified specialists. This will also require additional costs.

So it’s still better to choose

The choice of a ventilated facade or a wet facade depends on many factors. It is believed that the first option has an advantage due to the presence of space between the finishing itself and the insulation, which allows free circulation air flow and removal of moisture and condensation. Hence the name “ventilated facades”.

But this system may not be suitable for every building. This is due to the significant mass of the cladding, especially if the issue concerns porcelain stoneware slabs. Here it is necessary to take into account bearing capacity building walls. The most suitable finishing is for walls made of concrete.

Conclusion

Both ventilated and wet facades have their pros and cons. Before making a choice, you need to study them and choose the option that will satisfy your requirements and expectations. It is important that the finish is strong, durable and aesthetically pleasing, and everything else depends on the preferences of the owner.

Today, thermal insulation of residential buildings is very important aspect, taking into account the almost daily rise in prices for heating resources. And one of the common methods of external insulation is a wet facade.

What is a wet facade

A series of works on insulation and exterior finishing using liquid or semi-liquid mixtures containing adhesives in combination is called a wet facade. This type of finish can be used with various insulation materials. This complex of works received this name due to the fact that during the finishing process one has to deal with many solutions.

This type of finishing consists of a certain number of layers, which together provide thermal insulation and an aesthetic appearance to the building:

Layers. They are components of this type of finish. The facade structure consists of three layers:

1. Thermal insulation. Polystyrene foam or expanded polystyrene is used as insulation, which is attached to the wall of the building with glue in the form of a polymer-cement mortar. Dry adhesive mixtures have good adhesion to most building surfaces.
2. Base. It is laid after a layer of thermal insulation. Consists of fiberglass mesh and reinforcing glue. This layer protects the insulation from mechanical damage and atmospheric influences on him.
3. The final layer in the form decorative finishing or fur coats. The purpose of this layer is to give the building aesthetically pleasing. For final finishing, dry mixtures of plaster are used.

Advantages and disadvantages

This type of building cladding has the following advantages:

1. Relatively low cost of necessary materials.
2. Large selection of colors and shades of finishing mixtures.
3. Simple finishing process.
4. Long service life.
5. High degree of heat and sound insulation.
6. Reduces the level of wall freezing and the formation of various fungi on them.

In addition to the advantages of this finish, there are also disadvantages:

1. Finishing can only be done in warm and dry weather.
2. Vulnerability of insulation to rodents.

The service life of such cladding is approximately thirty years. The lifespan of the finish is determined by temperature changes in the region. The larger they are, respectively, the shorter its service life.

Wet façade installation technology

It is not difficult to finish a building if you know the technology of laying layers.

Installation of a wet facade consists of the following steps:

1. Priming the wall.
2. Laying insulation.
3. Wall reinforcement.
4. Applying the final layer of plaster.

Also, finishing work should be done in warm, dry weather. In order to ensure that the laid material does not swell and does not lag behind the wall, you must strictly adhere to the laying technology.

Step-by-step instruction

In order to accurately and efficiently lay the finishing layers, you must adhere to the following instructions:

1. Preparing the walls of the house. Before you start priming the walls, you need to clean it from dust and dirt. You also need to eliminate wall defects, such as chips and cracks, by covering them with putty. After the walls of the building are prepared, it can be primed. The wall is primed, generously covering its entire surface with a regular paint brush.
2. Glue some insulation. The dry adhesive mixture is mixed with water according to the instructions on the package. Apply the prepared adhesive solution in lines along the edges of the insulation sheet and dots in the middle. After applying the glue, the sheet is applied to the wall and pressed lightly. To securely fix the insulation to the wall, it is additionally fixed with fungal dowels, installing them along the edges of the sheet and one in the middle.
3. Reinforcing layer. After the entire area of ​​the walls is covered with insulation, the reinforcing layer is laid. The mixture is applied to the surface of the heat-insulating sheet in the form of an adhesive solution and, using a wide spatula, is leveled in an even layer along the wall. A fiberglass mesh is placed on the freshly applied adhesive solution and smoothed with a spatula. Reinforcement allows you to protect the insulation from mechanical damage and atmospheric influences. It should also be remembered that the mesh must be laid with an overlap of at least 5 centimeters. After applying the reinforcing layer, the walls must be primed again.
4. Decorative plaster. The final stage of finishing the building with a wet facade. Plaster is applied to the prepared and level wall. The color and type of plaster can be absolutely any at the request of the building owner.

Today, of all types of plaster, the following three are considered the most popular:

Bark beetle Refers to decorative plasters after application it can be baptized. Visually it looks like a flat surface with numerous slots, which resembles the bark of a tree. Apply to the wall with a spatula using longitudinal movements from bottom to top and vice versa.

Fur coat. Enough old look finishes, but no less popular than many new ones. With help plaster mixture make a liquid solution, which is subsequently applied to the wall in the form of small drops. It is applied to the wall surface using a special machine (organ organ) or a broom. Also to give color shade If desired, you can add colored pigments to the solution. Then the fur coat will not have grey colour, and the shade of the added pigment.

Plaster for painting. The walls of the building are leveled with finishing plaster, after which they are painted with emulsion paint in the desired color. The only difficulty with this type of finishing is getting the walls perfectly straight so that when applying paint, all the unevenness will be visible.

For a high-quality wet facade, it is not enough to carry out all the steps described above, since the quality of the materials from which it is made plays an important role in such finishing.

Necessary materials

To make a wet facade, you will need to purchase the following materials:

1. Thermal insulation material. As a rule, C-30 grade foam or polystyrene foam of the same density is used. The insulation is supplied in sheets measuring 1x0.5 meters. Can also be used for thermal insulation stone wool, which also comes in sheets.
2. Mushroom dowels. Necessary for mechanical fixation of thermal insulation sheets. You need to buy dowels at the rate of 5-8 pieces per sheet of insulation.
3. Fiberglass mesh.
4. Base profile for corners. Necessary for alignment internal corners buildings, as well as external. Also, this profile prevents corners from crumbling cracks, etc.
5. Priming deep penetration. Used to prevent the development of mold and mildew under the insulation.
6. Adhesive mixture. Required amount must be calculated based on the total area of ​​the walls of the building, taking into account reinforcement.
7. Plaster. The required quantity is calculated at the rate of 6 kg per 2 square meters.
8. Emulsion paint. Necessary if the building will be plastered for painting.

Also, in addition to the material, for comfortable work you will need a set of spatulas, a trowel and a level (level).

Insulation for wet facades

The following materials can be used as thermal insulation material for external insulation of a building:

It has a relatively low cost and has high heat and soundproofing properties. Produced in the form of sheets 1x0.5 meters. It also has different densities, the higher it is, the lower the degree of freezing of the insulation. The disadvantages of this thermal insulation material are its high sensitivity to rodents and low vapor permeability.

Expanded polystyrene. It has the same characteristics as polystyrene foam, but is much more expensive.

Stone wool. It has good vapor permeability and does not harbor rodents. It is produced in sheets and mounted on the wall with mushroom dowels. The disadvantages of such insulation include its price, which is quite high.

As practice shows, most people choose foam plastic as external insulation, since it technical properties do not differ much from other thermal insulation materials, and the price is much lower.

Estimated cost and reviews

The cost of finishing a building depends on the price range of the material; the higher it is, the larger the estimate for finishing the building. If you use materials in the middle price category, then finishing a wet facade will cost approximately 1,200 rubles per square meter of wall, provided that all work is carried out with your own hands. If you hire workers for finishing works, then the cost of the estimate will increase by approximately 800 rubles per square meter.

Wet facade technology is relatively new and has not yet had time to prove itself with negative side. Of course, if you do not take into account cases where, due to non-compliance with installation technology or the use of cheap and low-quality materials, peeling of layers and swelling from the wall occurred.

Frame house. But for exterior work, in addition to the traditional design with lathing and a ventilated gap, only one technology is used. It's about about the “wet” facade. It got its name because technological features installation

Features of a wet facade

The final finishing of a wet façade is a “pie” made of several materials, sequentially laid on wall cladding or DSP. IN general view it looks like this:

• a layer of adhesive composition on the base;
• thermal insulation material;
• glue;
• reinforcing mesh;
• glue;
• facade plaster;
• paint (if necessary).

All these Construction Materials easy to use, so you can handle the installation of the facade on your own.

But is it worth choosing this option? exterior finishing For frame house? Assessing the advantages and disadvantages will help answer this question.

Advantages and disadvantages of technology

A wet facade is fundamentally different from a ventilated one. This applies not only to the structure of the wall “pie”, but also to its operational properties.

To the advantages of technology can be attributed:

• Effective heat saving by minimizing the number of “cold bridges”. In a ventilated structure they are formed a large number of sheathing fasteners.
• Saving money and time.
• Aesthetic appearance of the house.
• Additional insulation, high-quality sound and vapor insulation of walls.
• Reducing the load on the foundation.

There are also disadvantages to insulating the façade using the wet method. They are related to the conditions for laying materials and applying adhesives. So, permissible temperature air during operation, the temperature should not be lower than +5 °C, and the humidity should be no more than 40%.

If these conditions are not met, there is a high probability that the glue and plaster will dry unevenly. This will negatively affect the quality of the final coating and its service life.

Materials for wet facade

The competent installation of a wet facade using insulation, the technology of which is quite simple, is largely based on making the right choice materials.

Polystyrene foam or mineral wool in the form of rigid slabs are used as insulation. They prevent the formation of condensation and retain heat well.

Wherein polystyrene foam loses to mineral wool in terms of environmental friendliness and flammability, but surpasses it in ease of use, price, and durability. It is also not subject to shrinkage during the use of the house.

Please note: when choosing slab insulation, its thickness is important. It is calculated based on climatic conditions and the insulating characteristics of frame walls.

To reinforce the wet facade, alkali-resistant fiberglass mesh is used.

The best option for fixing foam plastic is foam adhesive in balloons. It is also called liquid foam. It sets quickly, does not allow heat to pass through, and is resistant to moisture. The only disadvantages include the high price.

An alternative is universal facade adhesive in dry form. For better adhesion, it is sealed with a primer of the same brand. But it is better to fix mineral wool with a special reinforcing glue.

Installation of a wet facade on a frame house

Installation of a wet facade of a frame house involves the sequential performance of a series of works, taking into account the characteristics of the materials used. If you don't want to invite outside experts, make sure you have several reliable assistants.

Preparatory work stage

Wet façade – good decision for a frame house being built from scratch. The wall cladding, which is the basis for laying insulation, has a smooth and clean surface. It doesn't even need to be primed. However, some preparatory work still needed.

To glue the insulation layer, the surfaces of the base and walls are clearly demarcated. This is done using a special L-shaped profile. The short side (perforated) is attached to the wall with dowels, maintaining a pitch of 300 mm. Long side serves as a support and limiter for thermal insulation boards, therefore should not be less than their thickness.

Please note: during installation the profile is aligned horizontally using a building level.

Instructions for laying insulation

With the exception of a few points, the technology for installing a wet facade using foam plastic and mineral wool is the same.

The fundamental difference lies in the application of the adhesive composition. Adhesive foam is applied to the foam along the perimeter of the slabs, 20-30 mm away from the edges, and in the middle - pointwise. Reinforcing adhesive is applied to mineral wool slabs in a continuous layer using a notched trowel. A point distribution of the composition is unacceptable due to heavy weight insulation.

After applying the glue, the insulation board is pressed against the wall and tapped. First row placed close to the starting. Each subsequent one is fastened so that the joints between the slabs are “spaced apart”, by analogy with brickwork. In this case, the evenness of the rows is checked using a building level.

The foam sheets fit together quite tightly, but if gaps form somewhere, they can be covered up adhesive composition or fill with foam.

After the glue has completely dried, additional fixation of the insulation is performed using plastic disc-shaped dowels. Their length is equal to the thickness of the insulating material plus 55-60 mm.

Laying the reinforcing layer

Before installing the reinforcing mesh adhesive solution cover the dowel heads and building level check the evenness of the thermal insulation layer. After this, they begin to strengthen the corners.

Their surface is covered with a layer of glue, in which a fiberglass mesh and metal corner profile on top of it. Then the glue is evenly distributed over the surface of the insulation. Optimal thickness layer – 3 mm. Both a construction float and a wide spatula are suitable for the job.

A reinforcing mesh is placed on the adhesive layer in the direction from bottom to top. At the junction of the canvases, an overlap of 100-120 mm is made. All cells must be completely recessed into the glue, and any irregularities must be eliminated.

For finishing On the exterior walls, another layer of adhesive is applied on top of the fiberglass mesh. Its thickness should be 2-3 mm.

Finishing of the facade

You can also do the final finishing of a wet facade with plaster yourself. To do this, the base layer and adhesive layer are allowed to dry completely. Then a layer of primer is applied to it, which improves adhesion between the final and base coats.

After priming the wall also must dry. Depending on the solution used, this may take 5-8 hours.

Facade plaster can be purchased as ready solution, and in the form of a dry mixture that needs to be mixed with water. It is applied in a layer whose thickness is about 5 mm. The manufacturer reflects the nuances of working with a specific material in the instructions for use.

Designing wall openings is one of the most difficult stages of work. And here it is important to pay attention to the following:

• In order to fire safety along the perimeter of the openings, cuts are made of non-combustible mineral wool. They must have a width of at least 200 mm, and a thickness equal to the thickness of the main insulation.
• Holes are cut out in slabs of heat-insulating material equal to the perimeter of the openings along the slopes.
• Along the windows and doorways It is better not to glue the insulation, but to blow out the formed cracks with polyurethane foam.
• The joints of the insulating material must be at a distance of at least 150 mm from the slope.

Taking these nuances into account is the key to fire safety in your home and efficient drainage from its outer walls.

Thus, wet facade technology - good decision for those who want to economically insulate the external walls of the house without losing their aesthetics.

Video: technology and subtleties of installation