How to insulate the facade of a brick house from the outside?

Hello, dear friends! I think even experts will agree with me if I call brick the best building material. It can withstand heavy loads, has a long service life, and is also non-flammable. But brick, or rather masonry made from it, does not provide proper insulation. The thing is that the products have high thermal conductivity. That’s why today we’re talking about insulating a brick wall from the outside.

It is through additional insulation that this disadvantage can be minimized.

Before applying this or that type of insulation, as well as starting work, you need to study the possible options. And then choose what suits your façade.

Different thermal insulation materials are suitable for different cases. So insulating a brick wall is a serious and important issue that requires detailed consideration.

We insulate the facade of a brick house

In order for a brick house to be warm even in severe frosts, the width of the masonry must be more than one meter.
If we recall old churches and manorial palaces, the walls in them were made thick precisely in order to improve thermal insulation. After all, the brick itself is a fairly “cold” material. Considering that the cost of a brick house with thick walls these days will be unrealistically high, the only salvation is to install insulation on the outside of the building.

Of course, the house can be insulated from the inside, but then two problems will arise at once: firstly, the usable area of the rooms will decrease, and secondly, condensation will invariably form between the insulation and the wall, which will have a detrimental effect on the microclimate in the room.

Therefore, installing external insulation is completely justified, especially since there are plenty of opportunities for this these days. How to insulate a brick house from the outside?

Why is external thermal insulation better?

There are three ways to insulate a brick house. The first is insulation from the outside, the second is from the inside, the third is in-wall thermal insulation (well method). And if the latter is implemented only at the stage of wall construction, then the first two can be used after completion of construction. Which insulation option should I choose? The internal method has its advantages:

Work is carried out at any time of the year.
The insulation will not be negatively influenced by the external environment.

However, this method of insulation also has a lot of disadvantages, for example, a reduction in usable space by exactly the thickness of the insulation and finishing. The dew point begins to shift into the wall, and the insulation becomes less effective. In addition, the surface will constantly be covered with condensation. The result is dampness and mold. But insulating the brick wall of the structure from the outside will allow you to avoid these disadvantages. Advantages of this method:

The walls on the outside are protected from weathering and will last longer. It is better to replace the insulation after tens of years than to replace the main walls.
After insulation, the building can be transformed using any finishing facing material: block house, siding, facing brick, decorative panels, lining.
The wall will not freeze, the dew point will shift, so there will be no dampness or condensation in the room
Thermal insulation is more effective.
The insulation (if it emits harmful substances) is located outside and will not affect the health of the residents in any way.

Practice shows that this is the best choice for private homes. But so that the work is not in vain, it is important to find out how to properly insulate a private brick house from the outside.

Choosing insulation options

A popular type of insulation for the outside of a brick house is extruded polystyrene foam with low thermal conductivity properties, which is easy to install even on your own. However, insulation has a significant disadvantage - after its use, the walls no longer “breathe” and do not allow moisture to pass through.

Options for insulating brick walls

Some homeowners prefer mineral wool or fiberglass to polystyrene foam, which have the necessary “breathing” properties and are perfect for siding and plaster, but are afraid of moisture. Let's take a closer look at how insulation of a brick facade is done from different materials.

Insulation of masonry with polystyrene foam

The process of installing polystyrene foam on a brick wall

Thermal insulation with polystyrene foam does not require professional training, so the owner of the house can do the work on his own if he has time and an assistant. This is a lightweight and inexpensive insulation for exterior use, which is attached under siding or other cladding to protect walls from freezing.

The outer surface is pre-cleaned, leveled and a layer of primer is applied. The panels are attached to the walls using glue or dowels. When plastering, a reinforcing mesh is glued to the insulation and a layer of primer is applied. When finishing with tiles or siding, this work need not be carried out.

Insulation with Penoplex

Penoplex is a very popular material for thermal insulation and facades of brick walls.

The building material “Penoplex” is so popular among the population due to its strength, moisture resistance and low thermal conductivity that its name has truly become a household name. The cladding scheme and working tools are identical to the use of foam sheets:

cleaning the wall from dirt;
surface leveling;
brickwork primer;
insulation of window slopes.

After successful completion of the preliminary work, the Penoplex elements are installed in a checkerboard pattern. Polyurethane foam is used to seal tile joints. As a rule, siding or “wet facade” is used as a facing material, which will be discussed below.

Insulation of facade under siding

Siding is a convenient and common material for cladding insulated walls.

Finishing the facade with siding is affordable and easy to install. Both mineral wool and foam boards can be used for siding. It will protect the heat insulator from ultraviolet radiation and external influences. In addition, this building material is able to withstand mechanical loads and is resistant to winds and precipitation. And there is nothing to say about the variety of colors and textures - every buyer will find first-class siding in the stores to suit his taste and budget.

The sheets are attached in a vertical position to a strong wooden frame in increments of 30 cm. When using fiberglass and cotton wool to protect against moisture, the insulating layer is covered with a vapor barrier film. When using foam plastic panels, the masonry does not need additional moisture protection - this insulation does not absorb moisture.

Advice. To improve ventilation, experts recommend putting 2-3 cm thick bars on the insulation so that an air gap is formed between the panels and the insulation.

Insulation with thermal panels

Thermal panels are an effective cladding material that does not require additional finishing

Thermal panels can be an ideal building material for those who want to save their energy by combining the installation of thermal insulation and fastening of the cladding. This is an environmentally friendly and environmentally friendly type of finish, which, according to manufacturers, can last in the sun and cold for 50 years.

Insulation of the facade of a brick house with thermal panels is carried out in 2 ways:

with a flat outer surface, the panels are attached to the facade without preliminary preparation of the walls;
If the top layer is uneven, the thermal panels treated with sealant are assembled according to a mosaic pattern.

Fastening the panels with dowels and nails begins from the bottom corner of the building. After completing the work, the surface is cleaned, treated with a primer and, if necessary, a coat of paint is applied.

"Wet facade" technology

The next popular technology for insulating a brick house from the outside is called “wet facade” due to wet treatment of walls during thermal insulation.

The “wet facade” system and its design

layer of thermal insulation. The insulation (cotton wool, polystyrene foam, etc.) is attached to the adhesive mixture and fixed with dowels;
layer of reinforcement. The mesh protects from weather conditions, increases strength, and increases the load-bearing capacity of the wall for applying decor;
finishing layer. Decorative facade plaster of any texture and color is applied on top of the reinforcing mesh.

Choice of insulation

When talking about insulating a brick wall from the outside, what kind of material will be used plays a big role.

Some people take penoplex, others prefer mineral wool, as well as basalt wool. There are those who consider ordinary foam insulation to be the best solution.

This is not to say that in the case of brickwork there is a wide selection of insulators. In fact, the following insulation is used under facing bricks.

Mineral wool
. The most common insulation for brickwork, as well as other building materials. Retains heat well. But it loses its properties when exposed to water and moisture. Therefore it is better suited for internal insulation. Mineral wool is fibrous, does not burn, and is environmentally friendly. Effectively absorbs noise. Fits into the frame. Available in roll, mat and slab form;
Styrofoam
. This is foamed polystyrene. Produced in the form of slabs. In fact, these are cells filled with gas. Thermal conductivity is low. Good protection from noise. The material is light in weight;
Expanded polystyrene
. Advanced foam. Improved strength and lack of moisture absorption stand out against the background of foam plastic. The disadvantage is the higher price;
Warm plaster
. Just do not confuse it with liquid insulation. In our case it does not fit. Warm plaster consists of cement, lime, plasticizers, as well as expanded clay and expanded polystyrene granules. In terms of thermal conductivity, it is slightly inferior to competitors. But it is not afraid of bacteria, moisture, allows steam to pass through and does not burn. The density is high, which creates a load on the foundation. It is not recommended to make a layer thicker than 5 cm.

You need to choose between the proposed options based on personal preferences, the time allocated for work, as well as financial capabilities.

Polyurethane foam (PPU)

In recent years, liquid gas-filled polyurethane foam has begun to be in high demand. This is a unique innovative insulation that stands out from other insulating materials with its advantages:

low thermal conductivity – 0.028 W/(m•K), which makes it possible to apply a thin layer of thermal insulation with high heat-saving characteristics to the walls of the facade;
complete waterproofness, which is achieved due to the special structure of closed-porous cells filled with carbon dioxide. It does not require the creation of a steam or heat insulation layer; polyurethane foam acts as a full-fledged waterproofing;
lightness – does not burden the façade structure;
practicality - does not require preparatory work when spraying; it is enough to remove dust and dirt from the walls;
high speed of insulation work - a team of 3 people can cover up to 500 m2 of surface with insulation in one shift;
fire safety - polyurethane foam does not support combustion;
environmental friendliness;
high mechanical strength - you can walk on the frozen layer of polyurethane foam;
inertness to aggressive substances - acids, alkalis, oils, etc.

If you have a question about how to insulate the floor in a brick house, use polyurethane foam. This material can be sprayed onto other surfaces made of wood, concrete, metal, etc. 100% adhesion of polyurethane foam provides a durable and dense coating without seams, joints, or cracks. Therefore, cold bridges when using polyurethane foam are practically absent, in contrast to roll and slab insulating materials (foam plastic, mineral wool, etc.).

After spraying polyurethane foam onto the walls, it is covered with reinforcing screed and finished with finishing materials.

Polyurethane foam can be used to insulate the walls of a brick house from the inside or outside - it is a universal material suitable for thermal insulation of a wide variety of surfaces. Its minimum service life is 30 years. The advantages of sprayed polyurethane foam over other insulation materials are obvious; they have made this material the most popular for thermal insulation of various buildings and structures. Therefore, when deciding how to properly insulate a brick house from the outside, pay attention to polyurethane foam - the best among modern effective heat-insulating materials.

Laying three-layer walls

Laying a wall with insulation is carried out in several stages.

Laying the interior wall. It is produced using the same technologies as laying a conventional load-bearing wall made of solid bricks or building blocks. Depending on the minimum winter temperatures, it can be 1 or 1.5 bricks thick.
External wall masonry with cladding. It is carried out in such a way that there is a gap between it and the inner wall necessary for laying or backfilling the insulation - a well. 2 walls can be connected to each other either by connections made of anchor bolts and reinforcement, or by brick ligation, carried out at certain intervals.
Waterproofing is needed to protect the insulation from moisture, since it is impossible to completely prevent moisture from entering through the brick.
The wells are filled with backfill insulation when the walls reach a height of 0.8 - 1 m. Sheet and roll insulation is attached to the inner wall using mushroom dowels with a wide plastic cap, after which it is covered with external facing masonry.

For the construction of a waterproofing layer, it is not recommended to use “blind” materials, such as roofing felt. This will eliminate the possibility of free gas exchange between the external environment and the interior of the house. In the external wall, ventilation ducts should be left every 0.5 - 1 m - vertical joints between the bricks that are not filled with mortar.

Three-layer brickwork allows you to solve many problems that arise when using housing in winter. The process of constructing such walls is shown in the video below.

Mineral wool thermal insulation technology

Insulation of a brick house is carried out in two ways:

creation of a ventilated facade;
“wet facade”, gluing slabs to walls.

Mineral wool is optimally suited for the first method, which involves creating a sheathing and a multi-layer cake with vapor and waterproofing.

The surface of the walls is covered with a sheathing made of timber treated with an antiseptic compound or a metal profile. The guides are placed in increments less than the width of the insulation by 2 cm. This will allow the material to be laid more tightly.
Mineral wool is placed between the bars and covered with a waterproofing sheet.
The film is attached to the sheathing with a stapler.
Thin slats are placed on top of the moisture protection, which will provide an air gap between the insulation and the cladding.
The siding is attached to the slats.

Basalt wool slabs are strong enough to be installed without a frame. Correct installation of insulation begins with screwing a horizontal metal profile at the bottom, which will keep the material from sliding. The plates are fixed with special glue and dowels with a wide head. Each row begins with an offset. After finishing all surfaces of the facade, a mesh is laid on the mineral wool and a layer of plaster is applied.

Under plaster

This process is distinguished by its ease, but it also requires accuracy. Insulation is carried out according to the following plan:

Remove various contaminants from the wall surface and treat it with a primer.
The heat insulator under the plaster is installed using glue and dowels. They press the sheet tightly and do not allow it to move, even if the glue loses its properties.
Reinforce the insulation using plaster mesh. Thanks to this, you can give the surface additional reliability. Then apply a special reinforcing solution. Thanks to it, high density is achieved.
Finally, apply final plaster to the surface. You can learn how to apply it from the instructions provided by the manufacturer.

It may also be useful for you to learn about how floor insulation occurs in a wooden house.

Insulation of a brick building with polystyrene foam

Quite often you hear that polystyrene foam and polystyrene foam are the same material. However, this statement is completely false. The fact is that polystyrene foam and expanded polystyrene are indeed made from the same raw materials, but the methods of their production are different. Polystyrene foam is produced using a “dry” method; the granules are treated with steam for reliable “adhesion”. Expanded polystyrene is produced by extrusion, when granules are melted to form a homogeneous material. In terms of strength, density and soundproofing, polystyrene foam is several times superior to polystyrene foam. This insulation is convenient to install under vinyl siding and other materials for finishing the facade. In general, the process is practically no different from attaching foam plastic. Its installation for insulating walls with your own hands is carried out as follows:

Thermal insulation of brick walls with foam plastic

This technique is called a wet facade. The sequence of layers was described above. There are some peculiarities: it is important to wait for the glue to dry before proceeding with subsequent work. You need to fix the foam slabs from the bottom, moving up, one row at a time. The next row is done with a bandage so that the joints do not coincide.

After the brick walls are completely covered, it is important to immediately begin reinforcing the mesh by embedding the mesh in the adhesive solution. After all, if you leave polystyrene foam unprotected in the sun, it will begin to turn yellow and lose its properties. It’s also better not to delay with decorative finishing.

Important ! The gaps between the plates are filled with polyurethane foam, after which it is cut off.

Laying bricks with insulation will make the house warm, quiet and cozy. Heating costs are reduced several times. Having done everything correctly, there is no doubt that repairs will be required in a few years.

Insulation technology with extruded polystyrene foam

If you use this material, you need to:

Assess the condition of the surfaces, if necessary, eliminate defects and clean them from contamination.

Prime the wall to increase the adhesion of glue and brick.

Secure the starting profile around the perimeter of the facade (don't forget about the laser level).

Prepare an adhesive solution.

Apply glue to the sheet.

Moderately press the material against the wall, controlling possible unevenness using a long strip or rule.

Secure with dowels with caps.

Lay the rows in a checkerboard pattern. If you notice that gaps have formed between the sheets, fill them with polyurethane foam.

Stages of internal insulation of a house

First you need to apply plaster to the brickwork, if there is none. Clean and prepare the walls - remove old wallpaper and paint, fill cracks in the walls if there are any, remove unevenness and be sure to apply a deep penetration primer with antiseptic additives against fungus. Apply leveling putty and primer. Carefully dilute the glue strictly according to the attached instructions for gluing polystyrene foam. Apply the glue to the wall in an even layer, then go over it with a comb spatula. Glue the slabs exactly to the wall in horizontal rows, pressing them tightly to the surface so as not to deviate from the leveled area of the walls. Additional fastening to the wall with dowels is not necessary. The slab must be laid very carefully and tightly to avoid the formation of cracks. If you are going to finish with simple plaster, you will need to putty the panels, first sealing the joints.

Then reinforce the fiberglass reinforced mesh with a special mixture on top of the foam, apply the first layer of plaster, and after drying, a decorative one. If you want to attach drywall to the foam, then before gluing, mark the wall in increments of 40-60 cm, install fastening brackets to secure the frame. Having glued the foam panels to the wall, you need to attach a frame for mounting drywall, screwing self-tapping screws into the frame, and then putty the joints and fastenings. This coating is ready for painting or wallpapering.

You can insulate brick walls with mineral wool, which has excellent thermal insulation characteristics, is inexpensive and is easy to install.

But there are negative aspects: you will have to put plaster under this layer, and this is labor-intensive. You can, of course, skip this process and immediately start laying glass wool. To do this, you need to cover the entire wall using slats, the gap between which should be less than the width of the roll of insulating material.

Then you can begin installing the insulating material. If there is no plaster, another layer of cotton wool is added. The last layer is a vapor barrier material - foil, which is also attached with slats.

Polyurethane foam initially has the appearance of a foamed liquid, so it is difficult to work with it on flat surfaces to form a layer of the required thickness; it is more often used for thermal insulation of rounded surfaces such as roof slopes. The main advantage is maximum penetration into the wall, which makes it possible to achieve maximum thermal insulation. Polyurethane foam is more often used to insulate external walls; having made a frame with a solid wall, it is simply poured inside.

Insulation thickness for brick walls

External insulation of the facade of a brick house depends on 3 important factors:

From the shape of the brick (solid or hollow brick). The thermal conductivity of products is in the range of 0.4 - 0.9 W/(m*K). It influences the required thermal protection performance.
Depending on the type of building material. Brick can be ordinary, stove, silicate, etc.). Different types have different insulation needs. Double silicate brick has the lowest thermal conductivity, so for such structures the thermal insulation layer will be minimal.
Bricklaying method (solid or with an air pocket). The thickness of the floors and the operational features of the walls depend on this indicator. If the walls were constructed using solid masonry, insulation must be laid on both the outer and inner sides of the wall. If we are dealing with the well method, it is necessary to insulate the walls only from the inside.

How to apply warm plaster to walls?

Working with insulating plaster will take time, especially if you lack painting skills. To properly prepare the solution, the mixture is diluted according to the instructions.

Brick walls are cleaned and protruding parts are removed. The surface is primed with a penetrating compound.
A plaster mesh and beacons are attached to create a common plane.
The prepared solution is applied to the walls. The thickness of the layer depends on climatic conditions, but it should not exceed 5 cm.
You can create various decorative textures on the finished surface.

The insulation materials considered can be used in any region; the thickness of effective thermal insulation is calculated according to local climatic characteristics.

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We insulate the walls of the house from the inside and outside

The masonry looks no less colorful than any decor. It can decorate not only the facade, but also the interior, designed in both classical and modern styles. The material has high porosity. The air in its voids heats up and cools down more slowly than a solid body. This reduces the thermal conductivity of the enclosing structure. However, with a small masonry thickness, additional measures will be required to create comfortable conditions.

Protection is more effective from the outside, but sometimes you have to install it from the inside.

The coating under the cladding is a cake consisting of two main layers. The outer one is made of waterproofing materials. They protect the porous structure of mineral wool or expanded polystyrene from getting wet. If moisture gets inside, it will lead to the formation of fungi and mold. In addition, by filling voids, it displaces air from them, which leads to a significant increase in heat loss. To prevent this from happening during storage, the packaging should never be opened. For storage it is better to use dry heated rooms.

Requirements and types of insulation

The construction of a brick wall with insulation is an important and rather complex task. Regardless of the type of insulation, each of them must meet the appropriate requirements.

Firstly, resistance to deformation. This is a fairly significant factor, since under the influence of natural factors, the insulation can change its structure, which will not have a productive effect on the integrity of the structure and its properties.

The next criterion for good insulation is excellent moisture resistance. Although insulation is carried out inside the structure, this does not mean that moisture cannot enter it. Often this fact leads to very negative consequences, thus destroying the material. The thermal insulation properties of the entire structure are lost.

As for the installation of this or that material, this factor also plays a significant role. For example, attaching penoplex to a brick wall is not much different from the same technology to polystyrene foam. But the first one has improved properties, which makes it much more effective.

How to insulate brick walls outside

Insulation for external thermal insulation of a house made of any material must meet a number of parameters, including:

light weight;
ease of installation;
high physical and mechanical properties;
affordable price.

Let's consider the most popular materials that meet these parameters and are most often used for insulation.

Insulation of a brick house with polystyrene foam

Foam plastic is one of the most affordable and popular materials, which for a long time was the only slab insulation on the Russian market. The advantages of polystyrene foam include the following parameters:

Price. Polystyrene foam is the cheapest and most accessible insulation material. Its price is several times lower than its closest competitors.
Ease of installation. Polyfoam is very light, so it is easy to install, lay and fasten.
High thermal insulation properties. Convection heat transfer takes place in a single cell; heat transfer along the walls of the cells is insignificant due to their small thickness.

Three-layer brickwork with insulation

Thermal insulating panels are used here. The insulation is attached to the brick wall using anchors. They are pre-mounted into the wall. To prevent the formation of condensation, it is necessary to create a vapor barrier. It is a masonry made of facing bricks; stone can also be used.

It’s not bad if the brick wall with insulation has a small gap. In this case, this will allow the insulation itself to dry and prevent the formation of condensation. With this method, the internal load-bearing wall is first built. The insulation material is mounted on anchors built into the wall.

This method requires flexible connections with clamps. They are necessary to bind the insulation panels to the wall and thus create an air layer. Stainless steel washers are perfect as fasteners. The main disadvantage of this method is its high labor intensity.

1Features and purpose

It is mandatory to insulate brick houses. This applies to all people whose winter temperatures can drop below -15 degrees Celsius. In such conditions, the walls quickly freeze, absorbing the cold inside and releasing it into the room.

At the same time, the process of temperature exchange between the room and the wall will take place constantly, which helps to lower the temperature throughout the house with thermal insulation materials.

Of course, you can raise the temperature using conventional internal heaters. But electricity and gas are expensive now.

Using them to excessively warm up the room and combat low temperatures will only lead to a disproportionate waste of resources. In simple terms, you will be wasting resources. After all, such a situation could have been avoided.

For example, if you insulate a house with mineral wool, use polystyrene foam, Penoplex or any other material, then its internal temperature in winter, even without preheating, will increase by several degrees.

The insulation here will play the role of a kind of barrier to low temperatures. Due to its extremely low thermal conductivity, this material practically does not exchange temperatures, and therefore does not allow structures near it to cool.

Inside the house, with the exterior insulation of a wooden house using penoplex, the desired temperature will be maintained longer, since the walls are protected by insulation, and excessive heat consumption through their area will also be avoided.

As you can see, insulating walls or partitions between rooms can significantly increase the temperature inside the house, making living in it more comfortable, and the costs of life support acceptable.

Installation of foam insulation on external walls

In Europe, for example, almost all houses are insulated without fail, since this helps to save energy resources, which means it works both for the individual and for the entire state.

If we talk about cottages, then insulation of a brick house from the outside is most often used here, since it is the outer walls that give off heat the most, and if they are overheated, they “warm the street.”

If we are considering situational buildings or specialized buildings, then it may be more rational to insulate the internal walls or the space between the walls. For example, insulating a brick bathhouse from the inside is considered a more effective way to keep it warm.

While external insulation organizes processes in a different way. In this case, the internal temperature of the bath will also be equalized by the temperature of the walls, which also need to be warmed up, and this is a big minus.

In the traditional version, it is quite possible to insulate a house or cottage with siding with insulation, even with your own hands. Moreover, all the work is done with our own hands, from the beginning of marking and purchasing materials to finishing.

A wide variety of insulation materials can be used in the work: use mineral wool, install Penoplex or polystyrene foam, fill in penoizol, etc. Which one is better is up to you to decide.

If you follow the standard scheme, then insulating a brick house from the outside involves installing thermal insulation along the outer wall, and then finishing it with plaster.

But there is another interesting scheme.

This is the so-called three-layer wall. In such a wall there is space between the blocks of the outer and inner rows, which is approximately equal to the width of one block. Insulation is installed in this space.

You can use, as in the previous case, almost all samples. Unless it makes much sense to install Penoplex between blocks, since it has unique technical characteristics.

Considering that the space between the rows must be filled completely, it is best to use penoizol. This is a foamed thermal insulation material that is applied according to the principle of polyurethane foam.

Penoizol is poured into the opening between the blocks

Brickwork with insulation for the internal insulation of a country house is a unique alternative to standard solutions and can help you out in a situation where circumstances develop in a certain way.

But from a construction point of view, you can only work with it if you have planned insulation between the walls at the stage of design or construction of the foundation. Otherwise, it will be too late to perform such manipulations. And the labor costs for their implementation will increase exponentially.

As you yourself understand, you will not be able to do such work with your own hands. Unless you are building a house entirely on your own.

What mistakes can be made during the work process and how to avoid them?

Some people violate the technology of installing the material and insulating a brick wall with it, and then complain that they spent so much money, but it is of little use. To prevent this from happening and to avoid blaming the consequences of mistakes on bad luck, you need to immediately take into account several points :

Before starting work, identify “cold bridges”, that is, areas through which high heat transfer will occur. You can use the service of a special company that, using a thermal imager, will quickly and with a 100% guarantee identify such places. Often, “cold bridges” appear at the junctions of materials or structural elements.
Select the correct material thickness. If the thickness is too small, then it will not be enough for high-quality insulation of the walls, as a result of which they will freeze. If it’s too big, you’ll end up with an overconsumption of material, and that’s all extra money.
Follow the work technology.
For example, reinforcing mesh should be fixed to the wall with a small amount of mortar, and not to a dry surface and then applied with glue. The reason is that this way the mesh will better adhere to the pores of the material and will not fall off during use.
It is better to additionally dowel the polystyrene foam instead of just placing it on glue. This makes it more likely that the material will last on the wall for many years.
Do not use low-quality, too cheap or expired materials and solutions, otherwise they may not have the required parameters, for example, in terms of fire safety and toxicity.
Correctly lay individual insulation elements. After completion of the work, the house should become like a thermos, not letting out heat from the inside and not letting in the cold from the outside. If you do not properly seal the seams between the floors and the joints between the elements, then cold and moisture will seep through them, and then dampness and destructive processes will appear.
Clean the brick wall thoroughly - remove dirt and prime it, otherwise air bubbles will form, the material will not adhere tightly to the wall and may fall off in the future.

If you are interested in how and with what you can insulate brick walls from the inside and outside, take a look at this section.

1.1Types of insulation, their differences

The modern construction industry offers a huge number of insulation materials to choose from, which can be used as you please. You can single out a few of the most important ones, but the decision itself will have to be made by you.

Only after assessing the specific situation and your capabilities can you really understand which one is best suited in each case. We will help you better understand the main nuances of using insulation, their properties and details.

For external insulation the following are most often used:

Polystyrene foam is the most common and popular material that is used for insulating facades almost everywhere. Some people say that you still won’t find anything better than polystyrene foam, but this is not true.

An example of installing mineral wool during wall construction

Of course, polystyrene foam has a lot of advantages. It is convenient, lightweight, perfectly protects the house from heat loss, and is quickly installed.

And its price is quite low. With such high-quality characteristics, polystyrene foam is cheaper than any other insulation. Isn't this an indicator of quality?

But polystyrene foam also has its disadvantages. For example, low strength and susceptibility to combustion.

The low strength of foam plays a disservice to it. But for wall insulation this indicator is not so critical. But the flammability of the slabs is already a big problem.

Remember that you are installing exterior walls. In the event of a fire, it is the façade that is the first to spread the fire across the floors. If the façade is on fire and there are no firefighters nearby, consider the house lost.

Penoplex is a type of polystyrene foam.

Essentially, it is improved polystyrene foam that has gone through an extrusion process. Penoplex has better characteristics, resists loads better and insulates the surface much better. But it costs more.

Also, Penoplex is not free from the disease of foam plastic - flammability.

Although Penoplex is still a little more practical in this regard, because it does not burn, but melts. Which is already a big plus. But still, Penoplex must be used carefully and with the correct preparation device.

Mineral wool especially does not need any introduction - these are slabs or rolls of basalt fibers that have excellent thermal insulation characteristics and can be installed with your own hands.

Mineral wool is more expensive than polystyrene foam, but it retains heat better, is completely environmentally friendly and allows the walls to breathe. In addition, mineral wool is a non-flammable material.

Its main drawback, as in the case of insulating a wooden house, is swelling during prolonged contact with water. And although most manufacturers have already learned to solve this problem, we still do not recommend using mineral wool in a bathhouse or other places with high humidity.

A little has already been said about penoizol above. After hardening, penoizol is very similar to polystyrene foam, but it also has differences. It does not burn in fire and, moreover, extinguishes it due to the expansion of its molecules.

Another thing is that penoizol can only be filled with professional equipment and it costs a fair amount.

Layout of mineral wool slabs to avoid the appearance of cold bridges

Glass wool is a type of mineral wool insulation, but in all its parameters it is inferior to standard basalt wool. Therefore, now it is practically not used in construction.