How to properly insulate a brick wall from the outside. Insulation of a brick house from the inside is effective

01.06.2018

Ever since childhood, when our parents read the fairy tale "Three Little Pigs" to us, we understood that a brick house is the most reliable, and no wolf can blow it away.

Brick walls - this is strength, tested by time, and therefore no troubles in a brick house will be terrible. However, brick, like everything else, has disadvantages - walls made of it must be carefully insulated, since it weakly restrains heat.

Let's tell you a little theory. For example, walls that lie in one layer 40-60 cm thick made of bricks or ceramic blocks can keep the heat level in the house 2-3 times worse than necessary for comfortable living. So that's it.

What should we do now? The answer is very simple - we will insulate the walls with our own hands.

Internal insulation of a brick wall

First, let's take a look at what the internal insulation of brick walls is. First, you need to waterproof our wall with Ondurin vapor barrier film. Then we need to put insulation on the wall and again cover it with a vapor barrier film.

External insulation of a brick wall

External wall insulation is much better from a professional point of view. At the very least, we will win by preserving the area of \u200b\u200bour house, as well as not complicating our life during the insulation work. After all, any repair work is dust, dirt and nerves.

However, these are not the only reasons. For example, the moisture that is formed daily from the air in the room goes into the walls, and in the wall there is a transition from heat to cold. Thus, the dew point will form in our room, which means that we will have to freeze quite strongly in winter. Why do we need this? That's right, we don't need this, which means that we will insulate the brick wall outside the house.

Which insulation is best for the house

In order to properly insulate the walls brick house, there are dozens of heaters. The highest quality insulation is considered to be expanded polystyrene (gas-filled material) and mineral wool. If your finances are tight enough, you can use regular foam.

Let's summarize the insulation:

styrofoam;
expanded polystyrene;
mineral wool.

The most important thing is that heaters will not prevent you from cladding with siding or wood, since all such heaters are placed in the gap after the wall, before cladding.

How to insulate a brick house

Insulation of walls with mineral wool is mainly due to the fact that, unlike expanded polystyrene, it does not burn.
Insulation of walls with expanded polystyrene is mainly if the situation with finances is rather tight.
Insulating walls with foam is the cheapest method, but it retains heat worse.

Answer the question of how to insulate a brick house yourself, based on our recommendations. By and large, it all depends on how much you are willing to spend on the thermal insulation of your home.

Now some statistics. People who live in private houses, cottages and summer cottages believe that by insulating with foam, we doom ourselves to the fact that in the summer it will be unbearably hot in the house. But is it? Now we will deal with you.

Let's look at the properties of the insulation, they consist in the fact that in winter it must retain heat, and in summer, respectively, cold. Let us draw your attention to the fact that modern heaters are able to remove moisture from the house without absorbing it.

Our ancestors also knew that 40% of thermal energy is spent on heating the room, but why do we need extra spending? We will avoid them by high-quality wall insulation.

The whole point of thermal insulation materials is that they are able to increase the thickness of a brick wall. So feel free to insulate, in the end you still save!

How to insulate a brick wall from the outside

In order to make the correct insulation of a brick wall from the outside with your own hands, you need to start with the correct installation of the insulation. Let's imagine that we will be laying siding.

First of all, we make lathing with wooden slats along the entire wall of the house. We will fix them in the range of thirty centimeters from each other. We select the thickness of the slats corresponding to the thickness of the insulation. Then we put mineral wool between them.

In order to avoid the contraction of moisture by the insulation during rain, we need to lay a film that will not allow moisture to penetrate into the room.

Now, to protect the house from the wind, we need to put a protective film on top of everything that we put, which will protect our room from the gusty wind. That's it, now with the help of a stapler we fix the film and insulation with slats, and from above we carry out the crate, to which we will fix the siding.

In case a decision is made to insulate the house with expanded polystyrene, then purchase TEPLEX. This material differs from polystyrene in that it does not support combustion, is not toxic, and has very good sound insulation parameters.

Styrofoam, of course, is also a good insulation, especially when it comes to price, then buy it. If you want to know our opinion, then we believe that it is better to spend a little more money on the insulation of brick walls with expanded polystyrene, since the advantage of this material is obvious.

And so, let's go to insulate

We start by making putty on all sheets of insulation. You need to spread all the sheets in turn, and over their entire area. We use construction adhesive cement. Then we take the sheets and press them tightly against our wall and tap them with a mallet.

Now, while the glue is still fresh, take the Styrofoam sheets and drill through them in all four corners and in the middle. Then, in the holes drilled in the wall, we insert special chops, and we hammer in the umbrellas, making indentations so that they do not crawl out beyond the thickness of the foam.

After 24 hours, a plastic mesh is laid on the foam and covered with a thin layer of cement. This is done to protect the foam from the harmful effects of sunlight. If you plan to lay siding on top of the foam, then wood blocks must be laid between the siding sheets.

Lathing material

In order to make a crate with your own hands, you can buy a 40x20 piece of coniferous wood. As for the insulation, we can say that it exists in two types: basalt and fiberglass based.

Basalt based insulation:

ROCKWOOL stone wool,
TECHNOLIGHT plates,
Stone wool PAROC (Euroclass A1),
Mineral wool insulation Isolite.

Fiberglass insulation:

Mineral wool isover,
Mineral wool knauf,
Ursa mineral wool,
Isoroc mineral wool.

For diffusion membrane use:

waterproofing material Yutavek 115/85
waterproofing material Tyvek Soft / Solid.

Be sure to lay vinyl siding brands on top of the insulation:

Variform (USA),
Vytec (Canada),
Royal (Poland),
Tecos (Belgium),
Georgia Pacific (USA).

In order to secure the siding with high quality, you will need sharp self-tapping screws for fastening sheets with a press washer or their equivalent. So that is all! Now, proceed with the insulation of the brick walls of your house.

You can also watch a video on how to insulate brick walls:

How to properly insulate brick wall from the inside, we will look at it in detail today. After all, this option of insulation is quite common. True, it should be said that in some cases it will not work.

How to insulate a brick wall from the inside, which materials should be used, we will consider below. Also in the video in this article and in the photo you can see the most difficult moments of this work.

Isolating building partitions is a task that has great importance in the intention of retaining heat in living rooms.

These works can be performed both inside the residential complex and outside:

Street insulation is used at some points, if the house is perennial and needs finishing, covering or foundations, or from blocks and wood are applicable. Outside insulation is preferred as it is solid and easier to work with than inside. Having carried out such insulation, the room inside will not become smaller in area, does not need an auxiliary ventilation hatch and does not form a "greenhouse" inside the house.
If the room was erected the other day, the walls are lined with not cheap and attractive bricks, or the outer covering of the house is not allowed due to the preservation of the architectural appearance of the building, then it is preferable to apply insulation from the inside (see).
In addition, indoor insulation is carried out in the event that it is not possible to carry out such actions from the outside of only one wall in a multi-year house with many apartments, but does not correspond to the current requirements for heat protection. It is then necessary to insulate the entire building from the outside to retain heat, because exceptional insulation will not provide much benefit.

Attention: Do not forget that conducting insulation in the middle reduces the area, but at the same time makes up for other advantages of this method.

The internal insulation of the room is not so expensive compared to the external one, besides, certain permissions are not required to carry out these actions, and it is also not necessary to call professionals of this kind of work.
If it is decided to make thermal insulation in the middle of the room, then you should take into account other kinds of problems that may appear at the time of work.

Features of brick walls

Brick walls differ from walls made of concrete floors and wood, in their peculiar features:

At first, both hollow and solid bricks can be used on the walls. This greatly affects the heat conductivity of a brick wall, the location of this result between wood 0.2 W / (m.K) and concrete 1.5 W / (m.K) and forms 0.4 W / (m.K).
Secondly, the laying of bricks can be continuous or atmospheric recess (masonry well). The corpulence of the wall varies with the type of masonry itself and the application of the brick discharge, which changes the use of parameters and the desired completeness of the insulation cover.

Note: Previously provided average heat conductivity data. Thermal conductivity parameters can change in different directions, this is from the applicable types of timber and raw materials for manufacture. Thus, concrete to which expanded clay was added conducts heat 0.66 W / (m.K), solid silicate brick 0.7 W / (m.K), and pine wood 0.09 W / (m.K). It is necessary to have information from what the walls are built and their thickness before starting to insulate the walls of the room.

Regarding the masonry method, it should be noted that in the case of continuous laying, the material is distributed over the entire space of the wall or from one or both sides. The layer is directly related to the thickness of the wall: a small layer is needed on a thick wall.
If the masonry is "well-shaped" then the material is placed in the middle of the wall, in the middle of the brick. This direction is called in-wall insulation. This method can guarantee an auxiliary insulation of heat by the atmospheric layer between the outer and inner walls, but if a thermal insulating substance is used, the loss of heat will be minimal.

The main problem of thermal insulation

Do-it-yourself insulation of brick walls from the inside should be carried out according to the technology, because in this matter the condensate that appears between the wall and the applied insulation plays an important role.

Attention: If the actions were not carried out properly, then the manifestation of moisture will be visible after a short period of time. The resulting condensation will damage not only the insulation, but everything decoration Materials which were used in the processing of the room.

First, moisture penetrating into the insulation reduces its quality as an insulator at times.
Secondly, humidity is the culprit for moldiness or penicillus, which has a very bad effect on the activity of the entire insulation structure, as well as on the well-being of people and animals in the house.
In the end, dampness, settling on the surface in the middle of the room, accompanies the destruction of substances, thereby undermining the quality of insulation, but the building itself will not stand for a long time.

For the correct installation of the insulation and the correct determination of the level of its attachment, it will be necessary to make the necessary calculations.

The calculation is done in two ways: first of all, the dew point is determined. When placed on the wall, you will never have problems with the level of placement of the insulation. If it is in insulation or on outside walls, then internal insulation is simply impossible.
To insulate the room from the middle, a variety of building materials are used. More preferred options are the use of polystyrene, expanded polystyrene, plaster, mineral wool (see). Sometimes cork panels, concrete platforms with intended heat-insulating fillers, etc. are used.

Let's look at how to insulate a brick wall from the inside in more detail and go through the main materials.

Applicable materials

Let's take a look at the most used materials today:

Styrofoam or expanded polystyrene for insulation

Generally available, widespread and proven insulation of the room. Foamed polystyrene foam (polystyrene, expanded polystyrene, penoplex) is often used as insulation for walls from the inside, and brickwork is also included here.

In addition to a small heat conduction, it serves as a partial absorption of sounds. At the same time, the price of the material is not high, it is easy to assemble, without being a professional it is possible to carry out the installation with your own hands.

The only downside is that a lot of space is required for the foam. If there are no problems with the size of the area, then keeping heat with foam is an excellent option.

The time-tested method is the insulation of brick walls with plaster mortar.

One of the not complicated methods of insulation, moreover, quite economical, as well as polystyrene, at the same time takes a lot of time and is "untidy".
Internal insulation activities are carried out as follows. An assembly mesh is stretched onto the wall surface, which is covered with plaster several times.

Mineral wool insulation

Serving as a non-conductor, mineral wool is known from a good side, and is energetically used for insulation both from the middle of the room and from the outside.

It is a natural product made from silica or basalt. In order for cotton wool to effectively reject moisture, it must be doused with the intended hydrophobic substances, so it can be used in an atmosphere of high moisture content. Brick walls are insulated with wadding of solid or semi-solid slabs.
The use of mineral wool as an insulator is also due to the fact that before starting work with wool there is no need to level the surface of the walls, as in the case of foam.
Tightly adhering to the outside, it fills all the recesses. Information about the degrees of the room and the vicinity of the location will help to determine the thickness of the insulating material, but it should not be less than 10 cm.The insulator is commercially available in the form of plates (100x60 cm), as well as in rolls, length 9 m, width 50-120 cm , density 80-150 kg / m3.

Internal wall insulation options

It is worth remembering that the insulation of internal surfaces with a heat-insulating layer is the last option for insulation that requires attention only if it is not possible to make insulation from the outside.

Attention: Ignorance or recklessness in this matter can aggravate rather than improve living conditions.

Wireframe method

The first option is quite complicated and not everyone can do it with their own hands. Most professionals recommend insulating the walls from the inside using a metal frame on which drywall is attached.

The material (for example, slabs of mineral wool) lies in the middle of the base and surface. A paraprotective membrane is placed on top of the base and insulator, which forms an airtight layer. The membrane protects the coating from moisture.
In the middle of the thermal insulation structure and in the finishing cavity, it is required to leave a distance of a couple of centimeters for ventilation. This gap will provide a second base built on top of the first. As a result, a structure comes out of more than one layer, consisting of two bases, an insulator, a paraprotective membrane and drywall or other sources of coverage.

Insulation without frame

The second option for mounting heat insulation is much easier and more profitable. It is suggested to use it when you need to act quickly, but there is not enough finance.

So:

The walls are cleaned of the finishing backing because the insulator will adhere to the adhesive directly on the wall. Foam plastic plays the role of a heat-insulating substance. Polyfoam is not an expensive and profitable insulator (see).
First, you need to plaster the surfaces, then, when dry, putty the walls. After the putty has dried, lay a waterproofing layer to protect it from moisture. If the foam gets wet, it loses its capacity as a heat insulator.
Glue is used on the wall itself in large quantities. The polystyrene is hermetically pressed against the wall, walk with a roller for full pressing. On top of the insulator, the installation of interior decoration is carried out.
This method is only used when specialized surface insulation cannot be done. Styrofoam slabs must be laid one by one, without gaps.
After gluing the foam, you need to make a vapor barrier. This is a prerequisite when such work is carried out on the internal surfaces. Next, the installation of the vapor barrier is completed, the walls are finished.

We insulate with plaster

Brick walls are allowed to be insulated with a plaster mixture.

It happens as follows:

Initially, a fabric or metal grid must be applied to the surface. The plaster mixture must be at least three coats.
The first layer is made by spraying and rubbing so that the mixture can get into all holes and gaps that are present.
This procedure requires a thin cement mix. For this action, use a paint brush and a tenacious brush.
The layer thickness should not exceed 5 millimeters. The next layer is a primer. This is the most significant thermal insulation layer; it must be applied gradually with a spatula. The soil thickness is 50 millimeters.

Attention: It is necessary to apply the primer little by little, so that it does not crumble without bearing its weight.

Wall insulation with mineral wool

Basically, this is how the brick walls of the bath are insulated from the inside. This material does not cause problems in the work, if necessary, it can bend and "break", which in turn is not available to the foam.

The only requirement is that cotton wool is not cut with scissors, because when you press it down, it loses its purpose. The procedure for carrying out work on thermal insulation with mineral wool is much similar to the installation of thermal insulation using foam.

Mineral wool must be introduced into the area among the blocks in such a way that there are no gaps between the slabs. First, the waterproofing is installed, then the fittings are assembled for the heat-insulating layer, the vapor barrier is attached in the same way to the blocks.

Attention: Surfaces for cotton wool are preferable to plaster. It is allowed not to plaster, but to create a frame of wooden blocks on a brick wall, and put insulation between them, but then you need to use a thicker insulation. Note: Preferably use a sharp knife or saw to cut. When trimming the parameters of the plates, it is required not to cut in 2 cm, leave a margin so that the insulator fits tightly in the right places.

Thermal insulation of a brick wall with mineral wool from the middle, as in the case of foam, requires a frame, which will later be covered with sheets of gypsum plasterboard, or something else.
The frame is the same as for polystyrene; insulation is also placed in it at the level of the grate. So that cotton wool does not lose its properties, do not ram it. You can also use a frame from a metal profile.
It is necessary to fasten the wall profiles 60 cm apart, so that a layer of drywall, 120 cm wide, covers 2 parts without divisions. Above is a layer of waterproofing.
After that, each part is filled with cotton wool in two layers, according to the size of the insulation. A vapor barrier is placed on the cotton wool with a foil sided in the middle of the room. Both insulators are attached to the frame.
Further, the base is hidden by plasterboard or other raw materials that develop the design of your environment.

Insulation of a brick wall from the inside is not difficult, but responsible. The instruction will help you to do everything correctly and avoid mistakes.

Brick houses remain the most popular in modern construction. However, a brick wall needs an extra one to maintain an optimal temperature in the house, and so that heating bills do not horrify its residents.

Insulation of brick walls photo

Before starting work on insulation, you need to decide what material will be used for this. The choice of insulation depends on the method of insulation (in-wall, external or internal), as well as on the characteristics of the material, such as:

Thermal conductivity;
The ability to "breathe" (pass humid air);
Water absorption;
Density, mass;
Flammability degree;
Soundproofing characteristics;
Environmental friendliness;
The complexity of the application.

Now more specifically about the materials.

Insulation of a brick house outside with polyurethane foam is carried out after the preliminary installation of a wooden or metal frame. Also, the material can be used to insulate walls and indoors.

How to properly insulate a brick wall?

Above it was mentioned about three methods of thermal insulation, we will consider each of them in more detail.

Wall insulation of brick walls. This type of work is possible only at the stage of building a house.

The scheme of insulation of brick and foam concrete walls

First, the outer wall is laid out to a height of one and a half meters, metal rods are inserted into the seams of each 5-6 rows. After that, a tile or sheet heat-insulating material (mineral wool, expanded polystyrene) is installed and the inner wall is laid out. Thus, insulation is carried out to the top simultaneously with the construction of the wall.

If expanded clay is used for thermal insulation, then both walls are laid out at a height of up to 1.5 m, the distance between which should be about 15 cm, after which this gap is filled with expanded clay. So continue to the very top.

Insulation of the house outside.

When insulating a house from the outside, it is necessary to insulate not only the walls, but also the basement with the foundation. To begin with, the outer part of the building needs thorough cleaning, after which you can start finishing.

Thermal insulation with extruded polystyrene foam or foam begins with leveling the walls with plaster and subsequent priming. Then the insulation is attached to the wall using dowels or glue. It is necessary to arrange the sheets from the bottom up, placing them in a checkerboard pattern, so the structure will be more stable. After that, the wall must be reinforced with a fiberglass mesh and plaster applied to it. After drying, the wall is ready for decorative finishing.
Mounting ventilated facade... A layer of vapor barrier material is attached to the wall, then the frame is mounted. Next, mineral wool is placed in the frame, and waterproofing is placed on top. All insulating materials are fixed to the wall with dowels. Outside, such a facade is usually sheathed with siding.
Application "Warm" plaster is considered the simplest and cheapest way of insulation. First, the cleaned wall must be primed and a reinforcing mesh attached to it. Then warm plaster is applied. After it is completely dry, decorative finishing: painting, laying tiles, applying decorative plaster.

The basement and foundation are insulated in the same way as walls.

How to insulate a brick wall from the inside?

How to insulate a brick wall from the inside. Example and diagram

Typically, such work is carried out using "warm" plaster, cork, mineral wool, extruded polystyrene foam, polystyrene foam, polyurethane foam.

First of all, the work surface must be cleaned and primed. If there are noticeable irregularities, they must be pre-treated with plaster. After complete drying, a frame is attached to the wall, into which it will be laid, and in the case of polyurethane foam, an insulating material is applied. From above, the structure can be covered with plasterboard and plastered. After drying, carry out a decorative finish.

"Warm" plaster inside the house is applied in the same way as for external insulation.

Insulation of brick walls from the inside with polystyrene or expanded polystyrene is not recommended due to their toxicity and high degree of flammability.

To avoid saturation of the insulation with moisture, it must be laid with a compacted (expanded polystyrene) or foil (penofol) side from the wall, i.e. towards the room.

Materials with high vapor permeability after laying are covered with a vapor barrier film or thin foam foam.

Summary

In addition to the fact that in the cold season, due to thermal insulation, there is no heat loss, in hot weather hot air does not penetrate into the room, which means that it helps to maintain a comfortable temperature in the house all year round.

Warming your own home is not very difficult, and almost everyone can do it. Only a few theoretical knowledge and skillful hands are required.

Details about insulation and thermal insulation materials, as well as many other useful information about construction, can be found in subsequent publications.

How to properly insulate a brick house from the inside? We will formulate the basic principles of brick wall insulation and try to select the optimal materials for thermal insulation work.

A bit of theory

To understand how to properly insulate a brick wall from the inside, let's start with a small lyrical digression.

Builders, on the basis of vast experience of work (including thermal insulation), have long formulated two principles that must be followed when choosing wall materials and schemes for their insulation.

Vapor permeability

In the case of a dwelling, it should increase from the inside of the wall to the outside. Why? The fact is that in a residential building in the cold season, the humidity is noticeably higher than on the street.

There are two reasons for this:

In the process of life, the inhabitants of the house inevitably saturate the air in it with water vapor. Breathing, cooking, damp cleaning, dish washing, and laundry all lead to humidification. At the same time, air exchange is limited by ventilation capabilities: the windows are closed in winter.
Let's remember physics. Warm air can hold more moisture than cold air. It is the precipitation of excess moisture in the form of condensation during air cooling that leads to sweating of the windows and dampness in the corners of the outer walls.

Along with ventilation, water vapor continuously leaves the house right through the wall material. In the case when the outer layers of the wall have a higher vapor permeability, steam does not stay in the wall; but if the outer layers create a barrier, the wall begins to damp.

The vapor permeability of bricks is one of the lowest among building materials... Any inner finish or insulation layer should be even less permeable to moisture.

Insulation location

Ideally, walls should be insulated from the outside. What is the instruction related to?

With the location of the point where steam begins to condense as it cools.

In the case of a non-insulated wall, the dew point is located directly in the thickness of the brickwork. Building bricks will damp and rapidly disintegrate.

In the photo there is a double sand-lime brick M 150. The material from which it is made is afraid of high humidity and is not intended for high mechanical loads.
If the wall is insulated from the inside, the point with the temperature at which the steam condenses (the so-called dew point) will be on the inside of the brick wall, behind the insulation. The price of this is dampness, mold and puddles of condensation on the floor.

And only with external insulation with a vapor-permeable material, the entire capital wall will be warmed up; in this case, the steam will freely pass through its thickness, without causing excessive moisture.

Meanwhile in the real world
Unfortunately, not everywhere and not always everything can be done in accordance with the theory. In some cases, external insulation is impossible.
There are many reasons.
The house is an architectural monument. Its facade should retain its original appearance.

This is the top floor of a brick multi-storey building, and you do not have a tower of sufficient height at your disposal.

There is too little space separating the wall above from the neighbor's house, from which it is simply impossible to carry out thermal insulation work.

Be that as it may, we are dealing with the fact: it is impossible to insulate outside. How to insulate walls in a brick house from the inside?
Let's call on common sense to help. The main problem that we will face in the case of internal thermal insulation is the condensation of water vapor in those places where it is highly undesirable, and its consequences. The obvious conclusion - we just need to hermetically cut off the wall (and taking into account the vapor permeability of the insulation - and it too) from the room.
There are two ways.
When choosing how to insulate a brick wall from the inside, we may prefer an insulating material with extremely low vapor permeability. Among the popular heaters, two of these are offhand remembered: penofol (foil insulation based on expanded polyethylene) and extruded polystyrene foam with a compacted surface on one side.

Please note: the foil side of the penofol and the denser surface of the expanded polystyrene insulation should face towards the warm room. In this case, we will avoid the saturation of the insulation with steam.

Insulation with arbitrary vapor permeability can be protected from the side of the room with a vapor-impermeable film. In this case, the vapor barrier will have to be given just paranoid attention: not a single gap for moisture should remain. The strips of the protective film are fastened with an overlap, the seams are glued.

Possible solutions
Let's look at a couple of practical answers to the question of how to insulate a brick wall from the inside with your own hands.
Extruded polystyrene foam
This material has a high density. With a thickness of 20-40 millimeters, it can be glued directly to the walls. The surface facing the interior of the room can then be covered with wallpaper or covered with structural plaster.
Nuance: if you are deciding how to insulate a brick bath from the inside, it is better to forget about polymer insulation. At 80-100C, they decompose with the release of harmful substances.

How to insulate a brick house from the inside using EPS?
The walls are leveled and primed with antiseptic primer. It will serve as insurance against the appearance of the fungus.

For fixing the material, use ordinary tile adhesive or special cementitious foam adhesive. The material will not interfere with pre-rolling with a needle roller: the adhesion to the glue will slightly improve.

The glue is applied to the entire surface of the expanded polystyrene boards using a notched trowel; then the slabs are glued to the walls with minimal gaps with a spacing of the vertical seams between the rows.
Attention: disc dowels used for external insulation can be used in this case, but undesirable: they leave loopholes for steam in the insulation.

When the adhesive has set, the seams are filled with silicone sealant. Our goal is absolute vapor impermeability.

The surface is pasted over with wallpaper using an aqueous solution of PVA glue. If finishing with structural plaster is planned, the wall is reinforced with fiberglass mesh on the same glue; then the mesh is finished.

Styrofoam and mineral wool
You can also use a galvanized drywall profile.
The space between the bars is filled with heat-insulating material. It is set flat on the back. In the case of styrofoam, it doesn't hurt to foam the seams.

The insulation is carefully sewn up with a vapor barrier film or, even better, two to three millimeter foam foams. The material is attached to the bars with a stapler with overlapping strips; then all seams are carefully glued with construction tape.

A false wall of plasterboard is assembled on top of the crate, wall panels or lining.

Advice: how to insulate a brick bath from the inside? Mineral wool is used as a heater; vapor barrier is performed with dense foil glued with aluminum tape; then the wall is sewn up with linden clapboard.

Conclusion
As we found out, it is undesirable to insulate a brick house from the inside. However, if necessary, do it without negative consequences all the same it is possible (find out here,).
In the video presented in this article, you will find additional information on this topic. Good luck in construction!

While heating leaves much to be desired, making the microclimate inside the house uncomfortable, external factors constantly negatively affect the state of its structures. Therefore, it is important to insulate the walls of a brick house from the inside or outside.

To insulate a brick house from the inside to be effective, you need to know about an important factor, which we will talk about before considering the basic materials and technologies for insulating a brick house from the inside.

It is very important that it grows from layer to layer from the inner wall to the outer. This factor is very important because during the non-warm season in residential premises the humidity is significantly higher than outside. Everyone living in the house breathes, which means that the air is filled with moisture. Household processes from cleaning to cooking also play a role, as a result, the air is humidified, but does not go outside.

The warmer the air, the more moisture it can retain. So that the walls do not sweat, there is no condensation and dampness in the corners, it is important to correctly solve the issue of vapor permeability of the materials used in insulation. If the insulation of brick walls does not imply a vapor-permeable outer layer, the wall is guaranteed to be damp.

The location of a brick house from the inside is not the most effective type of insulation, since the ideal situation is when the house is insulated from the outside. If everything is not done correctly, the dew point will fall on the brick wall itself, which will accelerate the destruction of the structure, especially buildings made of silicate solid bricks, which are most afraid of moisture. If your house is built of exactly this, besides, protect the walls with roof canopies, but do not forget about the outflow of steam, which in this case becomes even more important!

Insulation of brick walls from the inside leads to the fact that the dew point is located directly behind the insulation, violation of technology is fraught with dampness and mold. External insulation, of course, will ensure that the entire wall is warmed up, steam is released outside, and there is no excess moisture.

But all of the above does not mean that it is impossible to insulate inside. There are many reasons why external insulation may not be possible. For example:

We cannot insulate architectural monuments outside.
The high-rise building, the upper floors are insulated, but there is no tower.
The neighboring walls are so close that there is no room for the external insulation to be done correctly.

These and other reasons force us to accept the fact that external insulation is impossible. And if you have chosen the internal option to insulate your house, you just need to understand well how to properly insulate a brick wall from the inside in order to be sure to comply with the technology. The most important principle of which is as follows: we should separate the wall and its insulation from the room, make them airtight.

And there are two solutions here:

Internal insulation with a material, the vapor permeability of which will be extremely low. Such can be considered penofol, which is a heater with a layer of foil applied to foamed polyethylene. Extruded polystyrene foam also has low vapor permeability if its surface is denser on one side. A prerequisite: both the foil side of the foam and that side of the extruded polystyrene foam, which is denser, must be laid towards the inner side.

Such a solution to the problem is also possible: the insulation of the walls from the inside should assume the presence of a vapor-tight film, which will be located on the inside of the housing and hermetically cut off the insulation from the inner wall. If you go this route, you should not leave a single tiny gap for moisture, be sure to overlap the vapor barrier film and carefully glue the seams

How it looks in practice

Now let's look at how to insulate a brick house from the inside, in practice.

If you chose expanded polystyrene, then your insulation is quite dense, 20-40 mm, and you can glue it directly onto the wall. The denser part looks inside the house, as you remember, and then it can be finished with a finish: glue the wallpaper, plaster it. By the way, if you are not insulating a house, but, for example, a bathhouse, but also made of bricks, extruded polystyrene foam, as well as other polymeric materials, will not work here, since with significant heating they will release toxic substances into the air.

Start the insulation of walls from the inside with the treatment of the walls: they must be leveled and primed with an antiseptic composition, which will ensure the absence of fungi on the wall. Armed with regular tile adhesive or foam adhesive, apply the adhesive to the slabs pre-rolled with a needle roller with a notched trowel to greatly improve adhesion. Glue the plates tightly to each other, make a vertical spacing between the seams of the rows. Wait for the glue to dry, then fill all the resulting joints with a silicone-based sealant. You must achieve maximum vapor tightness. You can paste over the resulting surface with wallpaper, for which an aqueous solution of PVA glue will be enough. But if you want structural plaster in the house from the inside, then you also need to reinforce the surface with fiberglass mesh, for which the same glue is suitable, and after the mesh has dried, proceed to decorative finishing.

You may have chosen Styrofoam. This is a more affordable option, so you should not discount it, many owners prefer it brick houses... The disadvantages of these materials for a brick house are high vapor permeability and low density. Therefore, competent installation is also very important here. And it is made by crate.

Therefore, before insulating a brick wall from the inside, first we take bars of the same thickness as the plate of your insulation. With a step not much narrower than a slab of insulating material, we erect a crate on the wall. We fill the resulting windows with insulation, it must be laid with a roll. If you decide to use Styrofoam, then take an extra measure of protection such as foaming the seams.

When the insulation is laid, a vapor-tight insulating film is placed on top. However, the most ideal protection for interior walls it will be if you instead use penofol 2-3 mm thick, fastening it with an overlap with a stapler. Be sure to cover the seam with construction tape.

At the end of the process of insulating a brick house from the inside with your own hands, you need to attach a fake drywall wall to the bars, you can also use lining or wall panels.

More briefly about materials

Styrofoam - a good choice, however, during installation you will get many seams, and each of them can become a cold bridge. Safe and effective insulation will be possible only with the absolute sealing of each of them, which in practice is not always possible to achieve with novice craftsmen.

Polyurethane foam is good for brick houses, but difficult to install, which is a significant disadvantage for many buyers. Mechanical instability can also be added to them, that is, the insulation requires additional protection. Extruded polystyrene foam is also great, you can do all the work yourself, the positive properties of the material cover its shortcomings.

As you can see, it is effectively possible to insulate the walls of a brick house from the inside, but if there is such an opportunity, it is better to carry out external insulation.

The video below shows in detail the entire process of wall insulation from the inside: