If your heating bills in winter cause you to have a panic attack, and the walls of your house are constantly “sweating”, it means that some miscalculations were made during construction, and it’s time to think about insulation. This is not a simple or cheap task, which is why it is so important to carefully select materials.
In this article we will tell you how to insulate the walls of a house from the inside, and compare several popular types of insulation to make it easier for you to make your choice.
Before you move on to choosing how to insulate the walls from the inside of the house, you need to clearly understand what qualities these materials should have. To one degree or another, all insulation materials have the same set of quality characteristics, but the difficulty of choice lies in the fact that different materials have them in different proportions.
So, let's figure out what qualities must be present in insulation:
Many people suffer from the cold in their apartments and are thinking about how to insulate the walls. You can do this business at any time, and even if you have to major renovation, then, as they say, God himself commanded. By insulating houses from the inside, we can protect them from frost in winter, as well as from excessive humidity when it starts to rain. The main criterion for such work is still considered thermal protection. Today there are materials and technologies that will help you do the work yourself. If the insulation inside the room is carried out efficiently, then heating costs become minimal.
The walls suffer the most corner apartments high-rise buildings and private houses. Having decided to take care of your apartment or house, you need to get acquainted with the peculiarities of the work, find out technological nuances. We’ll talk about how to insulate walls from the inside in a private house.
For creating comfortable conditions residence (heat preservation, getting rid of damp, moldy surfaces), the walls of houses can be insulated both from the inside and outside, from the facade. It is considered the most effective internal insulation. Especially:
When taking care of insulating your home from the inside, you need to choose the right materials that are vapor-tight. The work must correspond special technology, otherwise, instead of insulating a private house or apartment in a high-rise building, you will become the culprit of its destruction: mold will appear due to condensation. The fact is that dew point may form- an increase in humidity in the room when the heating season begins leads to the appearance of droplets on the walls in places where joints and seams are not insulated.
If you have to insulate walls from the inside, you will have to take care of the choice of material. There are special requirements for thermal insulation materials:
Exactly these Construction Materials and are used if you need to do internal insulation.
If you decide to insulate a private house from the inside with your own hands, try to learn more about the installation features. In addition to printed articles and Internet materials, you can use video tutorials that show in detail all the steps for installing insulation as wireframe methods, and frameless. Interested home owners can clearly track all stages of the work.
In the case where there are no special construction skills, it is best to carry out the work contact specialized companies, otherwise you will have to redo everything, and this will be additional material costs. Specialists carry out insulation work efficiently, quickly, following technology.
You can insulate the walls with mineral wool. It is used most often, although ideal option you can’t name such material. The point is that after some time mineral wool begins to absorb moisture, so it is impossible to avoid the appearance of damp places. When working with this material, you should do everything according to the instructions, not forgetting to process the joints. In addition, the walls themselves and the insulation must first be impregnated with antifungal compounds. Only in this way can the operation of the insulation be extended for ten years.
Before insulation with mineral wool, install it on the wall metal carcass. Plates are installed in the resulting cells, which must be compacted. The surface must be covered with plasterboard. When choosing mineral wool, do not forget that effective area apartments will decrease.
Expanded polystyrene in Lately is gaining popularity as insulation. This material has:
Penoplex, another name for expanded polystyrene foam, is an excellent material because it:
The inside of the house can be lined with foam plastic. Its installation does not require the installation of a frame. Material produced in the form of panels, which are simply glued directly to the wall. As an adhesive composition, you can use the one that is usually used to glue ceramic tiles.
Glue is applied to the polystyrene foam, then, pressing slightly, mesh metal reinforcement is installed. The overlap must be at least 15 centimeters. This layer is then plastered or painted, then wallpaper is pasted. Can be used when finishing ceramic or tiles.
Are you tired of freezing in winter and have you decided to start insulating your apartment or private house? Please note that the choice of insulation will directly depend on what material the walls themselves are made of.
Carry out insulation inside the house, following special rules. High-quality insulation You can do it yourself if you listen to the advice of experts. First of all, this concerns the walls. When preparing them, you need to perform the following types works:
When preparing the surface, a number of certain preparatory work, which require a special careful approach:
If you decide to create comfortable conditions in your private home yourself, it will cost much less than services specialized companies. On average, you will have to pay 450 rubles or more per square meter of insulation. The cost of a square will depend on what insulation material you used and what additional work had to be done before installing the insulation.
It should be noted that interior work for home insulation are not always justified. It is better, of course, to do this outside the building. But if its implementation is impossible for various reasons, then the standards fully allow wall insulation during internal space houses.
Of course, for the sake of comfort and warmth will have to sacrifice square meters , since insulation materials “eat up” part of the area due to their volume. But, as they say, it is better to live in a slightly smaller house than in a cold and damp one.
Maybe, modern technologies will soon make it possible to make houses warm, preserving space and at the same time eliminating condensation. For now, it is the technologies and materials listed above that make it possible to solve existing problems with heat conservation in a private home.
During the construction of private houses, many mistakes are made, due to which the walls become cold in winter, and funds for heating have to be lost. Installation helps resolve the issue. proper insulation. For installation, you need to know how to insulate the walls of a house from the inside and select the necessary materials.
Insulation can be placed both outside and inside the house. The home will become much more comfortable: about 30% more heat will be retained in the room, which would have gone outside.
Before starting work, you should familiarize yourself with certain disadvantages of insulation inside the house:
Due to the listed disadvantages, it is recommended to use insulation inside the house when it is not possible to implement other options.
Before choosing how to insulate a house from the inside, you must complete preparatory activities. This includes items:
Wooden beams are dried according to certain rules, microscopic cracks appear and are visible to the human eye, which must be removed. Sealants, resins, etc. are used for sealing. Assembly is widespread. If a synthetic sealant is purchased, there should be no acrylic substance.
When using silicone compounds, it is important to purchase a substance with a high degree of frost resistance. Any mixture is introduced to the maximum depth into the cracks; as soon as it hardens, the application areas are leveled. Polyurethane foam used in places where there will be cladding.
Wood shavings are mixed with an adhesive composition. The gap is cleaned in advance, and the prepared composition is poured into it. After drying, sanding is required for leveling. This method can be used to seal small cracks.
A budget option is to use tow, moss, and other similar compounds. When using them, it is important to treat the cracks with an antiseptic solution and a mixture to eliminate fungus and mold. If the walls are wooden, the joints are sealed only with such mixtures. To prevent the cracks that can grow in the wood from increasing, you need to constantly inspect the beams.
If a private house made of wood, wooden materials are used. Metal elements can be installed if the walls are covered with moisture-resistant plasterboard. Activities are carried out in a certain sequence. First, markings are applied to install the sheathing.
Its width is selected taking into account the width of the insulation. You need to subtract 3-4 mm from the figure. Insulation elements must be installed against the sheathing. This action is not necessary for all types of materials.
To make the corners of the room even, you need this action. The height of the beam 50x100 mm is chosen equal to the height of the room. A small beam is secured to the edge with self-tapping screws large timber to make a right angle. The steps are repeated for each corner.
For the sheathing, boards are prepared that are installed vertically. After they are secured, the correct installation is checked with a level. The sheathing is installed first in the corners, moving towards the center.
Use polymer films for this; a foiled surface is possible. Fastening is done using a stapler. Definitely overlap. The joints are sealed with tape. Actions are performed over the entire insulated surface.
It is attached to the sheathing; there should be room for ventilation. Roofing felt is most often used. It helps to get dry walls and prevents condensation.
Important! Any wooden elements, installed to insulate a house, must be impregnated with compounds against mold and mildew.
Each insulation material has special properties. To choose the right composition that has all the required parameters, it is worth familiarizing yourself with the features of each of them. One of the popular materials is extruded polystyrene foam. It is dense, has a thickness of 20-40 mm. It is attached to the wall using adhesive mixtures. Then the surface is treated with plaster, you can glue wallpaper directly on top.
Insulation using expanded polystyrene is carried out in the following sequence:
You can glue wallpaper on top of the fixed material. If finishing is required, reinforcement with fiberglass mesh using glue is necessary.
This material is most often used for external wall insulation. Can also be used inside the home. Its advantages are well preserved heat, noise absorption. During the production process, the products are treated with mixtures against insects and rodents. Temperature changes do not render the insulation unusable. To cut into pieces, you can use any suitable tools, there are no restrictions.
To secure fiberboard to the walls, nails longer than 3.5 cm are enough. It is advisable to drive them in in a checkerboard pattern. One sheet is pierced with approximately 16 nails. After additional treatment with plaster, you can cover the surface with wallpaper, lay wires, making the required channels. Using of this material there is a possibility of condensation.
Before insulation with mineral wool begins, it is required mandatory installation battens. Thermal insulation characteristics the composition is high, easy to install, and has a long service life. It is important to secure the material between the boards so that there are not even the slightest gaps left. For more secure fastening, you can use dowels.
The composition is laid from the bottom of the walls, moving upward. To ensure a higher sealing density, the edges are pressed down and trampled. You need to lay it in an even layer, without kinks. You can do several layers. After installation, the vapor barrier layer is installed.
Glass wool should be laid using protective equipment.It crumbles, glass particles can damage the respiratory tract, so you need a respirator. It is important to install protective structures after laying the insulation. You can use fiberboard.
The answer to the question whether it is possible to insulate a house from the inside and with what cannot be called unambiguous. The process is carried out in one sequence, but the selection of materials and wall features will be individual. Ecowool is a natural insulation material. It is made entirely of paper (cellulose). It contains antiprenes and boric acid, not capable of releasing harmful volatile compounds.
Advantages of the material:
Cons of ecowool:
When figuring out how and with what to insulate a house from the inside, it is important to analyze the pros and cons of each insulation. Such insulation materials have a number of advantages that are not available in other materials.
Among positive qualities highlight:
There are materials on sale that are covered with foil on one or both sides. There are no restrictions on use: you can insulate not only the walls, but also the ceiling and floor. To prevent heat from leaving the house when heating with radiators, polyethylene insulation is installed between them and the wall. It is important to leave about 2 cm of free space.
| Izover | Rockwool | Expanded polystyrene | Ecowool | Foam concrete | Polystyrene concrete | Mineral wool | Expanded clay | MPB - basalt mats | |
|---|---|---|---|---|---|---|---|---|---|
| Thermal conductivity W/m°C | 0,048 | 0,045 | 0,039 | 0,038 | 0,18 | 0,13 | 0,038 | 0,18 | 0,045 |
| Required layer thickness | 253 mm | 233 mm | 200 mm | 200 mm | 550 mm | 300 mm | 200 mm | 950 mm | 240 mm |
| Condensate | Forms, needs a vapor barrier | Forms, needs a vapor barrier | Not formed | Forms, needs a vapor barrier | Forms, needs a vapor barrier | Not formed | Forms, needs a vapor barrier | 10,1 | 8,16 | 7,18 | 9 | 302,5 | 135 | 9,1 | 4,75 | 4,8 |
| Ecological cleanliness | Phenolic binder | Phenolic binder | Styrofoam granules | Wood fiber | Modifying additives | Styrofoam granules | Phenolic binder | Clay | Phenolic binder |
| Fire safety | Does not burn, but binders do burn, combustion products are toxic | At 80 degrees Celsius releases toxic substances | Inflammable, combustion products are harmless | Does not burn | Does not burn | Does not burn | Does not burn, but binders do burn, combustion products are toxic | ||
| Biostability | Rodents won't start | Rodents won't start | Rodents won't start | Rodents won't start | Rodents won't start | Rodents won't start | Rodents won't start | Rodents won't start | Rodents won't start |
| Approximate cost per 1 m2 | 230 rub. | 490 rub. | 280 rub. | 235 rub. | 227 rub. | 1200 rub. | 430 rub. | 807 rub. | 350 rub. |
For each type of wall there are specifics on how to insulate a house from the inside. For frame houses it is necessary to first check their condition. If defects are found, they must be eliminated before insulation work begins. The first step is to remove from the walls foreign objects and clean the surface. It is important to eliminate any gaps present on the surface. This is done using polyurethane foam.
If the walls are damp, they must be dried with a hair dryer. A waterproofing layer is installed. It is worth cutting it in advance into strips that will be equal to the size of the walls of the house. Next, the material is attached to the surface. Thermal insulation is installed and secured between the pre-installed sheathing. To increase the efficiency of insulation, you can lay the insulation as tightly as possible, if its structure allows.
Do not confuse how to insulate a house inside with methods of external insulation. Work should begin by installing the sheathing. It is fixed on load-bearing walls. It is worth using timber for this purpose. Metallic profile should be used only if the cladding is made using moisture-resistant plasterboard. To make even corners, it is necessary to prepare corner posts, for which a beam with a section of 50x100 mm is used. In height they are equal to the height of the room.
The walls must be pre-treated with special compounds that prevent burning and rotting of the material. Next, the bars are installed at a distance of 50 cm, and the process of fixing the sheathing is considered complete. Afterwards the insulating material is attached. The most popular is mineral wool. The material is adjusted to size, the width must exceed the distance between the vertical wooden structures by a couple of centimeters.
Mineral wool is secured using anchor bolts. You can lay it in a couple of layers, placing a film between them. Upon completion of installation of the material, 30x40 mm bars are installed. Sheathing is carried out, for example, with clapboard. If the named material is used, this will additionally insulate the home.
To create suitable conditions for a comfortable stay, mainly in panel houses mineral wool is used. In addition, you can use fiberboard or penofol. You can insulate the house from the inside with polyurethane foam. The first step in the insulation process is the removal of the old coating. A vacuum cleaner is often used to remove dirt.
The cleaned wall is treated with an antiseptic solution and primer. After each applied layer, the wall must be allowed to dry. Further uneven surfaces covered with plaster mortar, joints are coated with mastic or sealant.
The next stage is installing insulation. The material is installed according to the rules given above. These rules are slightly different for each lineup. The final stage is the final finishing.
Having figured out how to insulate the inside of a house, you can begin to study the insulation features of each type of wall. Brick dwellings are distinguished by their durability and strength. But the thermal conductivity of brick is high, heat goes outside quickly, compared, for example, with a dwelling made of timber.
To create comfortable temperature indoors, insulation is required. If we analyze the insulation process using mineral wool as an example, it is worth considering that the material cannot be left open. It will begin to emit dust, which is harmful to human health.
Picture 45. Insulation of a brick house.
It is necessary to waterproof the thermal insulation layer - materials usually easily absorb moisture. In this case, their properties are lost. To secure all the required layers, you first need to prime and plaster the walls. There is no point in making the surface flat - it will be covered with lathing. When the walls are completely dry, a layer of waterproofing is attached to them.
The sheathing is installed if the insulating material requires it. It can be secured with screws. The insulation is fixed. A vapor barrier layer is installed on top of it. You can cover the outer layer with plywood or drywall. The joints between the sheets are sealed with putty.
The rules on how best to insulate a house from the inside or outside should be sorted out in advance. Incorrect actions lead to rapid deterioration of the walls and retention of moisture in their surface. If the walls are not insulated, when there is dampness and sub-zero temperatures outside, they will distribute incoming moisture and cold over the entire surface. The insulation process helps save money on heating. Don't think that interior decoration walls are insulated. This is mistake.
Typical mistakes when insulating walls:
Important! When insulating with expanded polystyrene or other similar materials, you need to apply glue not pointwise, but over the entire surface. Condensation will form in the layers of the “thermal coat”.
At the end of the insulation process, the walls can sometimes freeze even more, but do not become warmer if gross mistakes. Many questions are asked regarding whether it is possible to insulate a house from the inside. From a technological point of view, it will be correct. This will keep the walls from freezing. At least 70% of the heat from the external walls of the building is retained. Therefore, carry out insulation work inside the building only if there is no other way out.
Both builders and manufacturers of insulation materials argue about whether it is possible to insulate houses from the inside, but everyone agrees that in most cases, walls will not be insulated from the inside. the best solution- if possible, it’s better to do it external thermal insulation Houses. However, if there is no choice, you should carefully study the features and rules for choosing and installing insulation so that the internal thermal insulation is effective, safe and durable. How to insulate the walls of a house from the inside and how to do it?
Indoor walls can be insulated only in cases where the façade of the building cannot be changed or outer surface there is no access to the wall. It is recommended to avoid insulating walls from inside the house because it has a number of significant disadvantages:
The most dangerous consequence internal thermal insulation becomes condensation inside the room, which leads to accelerated destruction of walls and damage finishing materials. This can be partially avoided by accurately calculating required thickness layer of insulation and choosing the right material. Thus, insulating a house from the inside is expensive and unsafe, but sometimes unavoidable.
If you still had to deal with internal thermal insulation, then before you figure out how to insulate the house from the inside, you need to understand whether negative consequences can be avoided. Dry walls inside the house can be ensured by protecting the area where the dew point forms from moisture.
To do this you need:
When insulating an apartment from the inside, it is very important to get rid of all possible cold bridges. They form at the joints of insulation slabs and in those places where the wall connects to ceilings and internal partitions. To improve the efficiency of insulation, it is necessary to lay thermal insulation material extending onto the internal walls, floor and ceiling.
It is not recommended to choose this material, since it will not be effective enough to insulate a wall in an apartment from the inside. However, cotton wool is the easiest to use and cheaper than other options, so they often resort to using it.
Vata exists in two versions:
If there is no other choice, it is better to use wool in the form of slabs - this insulation is denser and has better thermal resistance, does not settle over time. The rolled variety of cotton wool has too high a vapor permeability rate and absorbs moisture well, so the walls insulated with it will probably get wet. However, there is a possibility of moisture penetrating under the insulation when using slabs with a density of 75 kg/m3 or more. You can reduce the risk of condensation by using good vapor barrier material and installing the insulation correctly.
Insulation from the inside with mineral wool is carried out as follows:
Due to the nature of mineral wool, vapor barrier needs to be given Special attention when internal insulation of the walls of the house is carried out. You cannot use polyethylene film; you need a more effective vapor-tight multilayer membrane. TO wooden frame it can be attached with a stapler, always with an overlap; It is glued to the profile with double-sided tape.
The overlap when laying the membrane should be at least 100 mm, the joints should fall on the frame elements and be securely glued. The vapor barrier should extend to surfaces adjacent to the wall. The places where the membrane comes into contact with surfaces should be additionally sealed. Liquid sealant is applied to a wall, pipe or other structure, then a membrane is pressed to the junction; After the sealant has dried, the membrane is fixed with tape.
High-quality installation will reduce, but will not completely eliminate, the risk of condensation when using mineral wool. It is better to consider other, polymer, types of insulation for walls from the inside.
Expanded polystyrene, or foam plastic, is much better suited for insulating walls in an apartment from the inside. This is facilitated by the following characteristics:
Regular or extruded polystyrene foam of sufficient density, even with a relatively small thickness, will provide fairly effective thermal insulation of the room. It is recommended to choose it not only because of its ease of installation, but also because it can be used to insulate an apartment from the inside most effectively: it does not allow moisture to pass through, so condensation will not appear. The main thing is to properly glue the foam boards, sealing the joints and ensuring a tight fit to the wall.
When using expanded polystyrene for thermal insulation of residential premises, it is important to take into account some of its disadvantages. So, it practically does not protect against noise. In addition, when burned, it releases toxic compounds into the air. Another disadvantage is high cost EPS, but it is compensated by the fact that there is no need to lay a vapor barrier membrane, and you definitely won’t have to redo the thermal insulation due to the destruction of the insulation, as is the case with improper installation of stone wool.
Polystyrene insulation for walls inside an apartment should have a high density - 25–30 kg/m3. The density can be determined by the marking, which looks like “PSB-S-25”, where 25 means the desired parameter.
Installation of polystyrene foam boards on interior wall carried out as follows:
There is another installation method. At the long ends of the PPS slabs, grooves in the form of corners are selected. The two slabs are joined and the seam is sealed. Then it is inserted into the groove wooden plank. The resulting structure is fixed to the wall using self-tapping screws. This method is more convenient, since insulating the room in this case can be done faster and more economically. In addition, the boards can be used as a frame for attaching drywall.
There are also more modern insulation materials for walls from the inside - polyurethane foam, heat-insulating plaster, polyethylene foam and even ceramic-based thermal paint. Among them, only the first material is worthy of attention; other options are actually of little use for insulating an apartment from the inside. Polyurethane foam is ordinary foam, similar to mounting foam, which is applied to the surface to be insulated using a special sprayer.
The good thing about the material is that it reliably adheres to any surface, penetrates into all cracks, is monolithic and vapor-tight. It hardens quickly and does not form any cold bridges. However, polyurethane foam is quite expensive, and you won’t be able to work with it yourself.
Thus, if you need to insulate walls from the inside, it is best to use expanded polystyrene. This heat insulator has the most suitable characteristics, and installing it yourself is not difficult. If the insulation technology is followed, it will effectively protect the house from the cold.
Most of the built panel and brick houses did not provide for insulation of facades. Concrete and brick have high density and low thermal insulation properties. The consequence is cold walls and uncomfortable temperatures. There are several ways to insulate from the inside, the main thing is to avoid the appearance of dampness.
A cold wall is not the only drawback of panel or brick houses. Often dampness and accompanying fungus and mold appear on it. The best way struggle - insulating the wall from the outside (this is also a requirement of SNiP), but this is not always possible. Therefore we have to fight cold wall, insulating it from the inside. But there are pitfalls here.
Even if the cold wall was previously dry, when insulating it from the inside, dampness may appear. And the so-called dew point will be to blame.
The dew point is a conditional boundary at which the temperature of water vapor becomes equal to the temperature of condensation formation. It naturally appears during the cold season. With proper design of the house (taking into account the characteristics of the region), it is located approximately in the middle of the thickness of the facade made of a material of uniform density.
If insulation is carried out from the outside, the dew point shifts towards decreasing density (that is, towards the outer surface of the wall). When insulating from the inside, it moves inward, and condensation may appear on the surface of the main wall or inside the insulation.
And to assess the scale of possible damage, it is enough to say that as a result of the life activity of one person, about 4 liters of water evaporate per day (cooking, wet cleaning, personal hygiene, washing, etc.).
There are several ways to prevent condensation from appearing on an internally insulated wall:
PPU insulation meets all requirements for vapor barrier, water absorption and absence of seams. Therefore, even if there is a dew point inside the layer, it will remain “conditional”, since there is no condensation in vapor-tight materials. This results in a completely sealed thermal insulation layer from the room side.
The environmental friendliness of polyurethane foam after hardening meets the requirements for residential premises. Harmful fumes are present only when the components are mixed during the spraying process - after polymerization, the structure of the material remains stable.
Apply thermal insulation between the sheathing and sew up with moisture-resistant sheet materials(gypsum board, OSB or plywood). Essentially, it's like a large prefabricated sandwich panel.
The disadvantage of this method is the use of special equipment.
This is a relatively young thermal insulation material, the action of which is based on the use of two principles - the creation of a thin layer with high resistance to heat transfer and the reflection of heat towards the radiation source.
Of course, a thin thermal insulation layer cannot provide good thermal insulation- This is an auxiliary, but mandatory factor. Although it gives a fairly high effect - the wall becomes much “warmer” to the touch.
The main task of reducing heat loss is performed by microscopic ceramic spheres that reflect infrared radiation.
According to the manufacturers, the effect of a 1.5 mm layer can be compared with thermal insulation with 5 cm thick foam plastic or 6.5 cm mineral wool.
The application method is the same as for acrylic paint(the basis is the same). After polymerization, a dense and durable film is formed on the surface, and latex additives improve waterproofing properties.
Penofol is a combination of polyethylene foam and aluminum foil. This is a whole series of materials (including single-sided, double-sided, laminated, with an adhesive layer). Moreover, it can be used in combination with other thermal insulation materials, and independently. By the way, penofol is popular for insulating a bathhouse from the inside, and there is much more steam there than in an ordinary living room.
To insulate a cold wall, use penofol with one layer of foil (one-sided) and up to 5 mm thick.
In the case, as with liquid ceramics, the effect is achieved due to the low thermal conductivity of foamed polyethylene, as well as its low vapor permeability and high reflective properties of foil (up to 97%).
But unlike seamless coatings, complete sealing and prevention of cold bridges cannot be achieved. Consequently, condensation may form on the surface of the foil. Even the obligatory sealing of the joints with adhesive aluminum foil will still leave gaps inside between adjacent sheets.
The traditional method of combating the formation of condensation on foil is lathing with a ventilated gap between the penofol and the outer cladding.
Another version of foamed polyethylene, but already made in the form of a kind of wallpaper - there is a layer of paper on both sides. Polyfoam and is intended for gluing wallpaper onto it.
Of course, its thermal insulation properties are not as high as those of penofol, but to make cold wall warmer to the touch, they are quite enough.
In most cases, the insignificant thickness of the insulation does not lead to the dew point moving to the inner surface.
The disadvantage of this method is that only a dry wall is insulated.
Expanded polystyrene (or extruded polystyrene foam) is glued to the prepared and leveled wall. Both materials have very low water absorption (especially extruded polystyrene foam), so the formation of condensation in the insulation layer is excluded. The main danger is its appearance on the surface of the insulated wall.
Therefore, it is best to glue the sheets to special hydrophobic adhesive mixtures applied over the entire surface of the sheets. And to prevent the penetration of water vapor from the side of the room, treat the seams with sealant (you can also use polystyrene foam with a step or a tongue-and-groove connection).
Finishing can be done in two ways:
Mineral wool does not meet the requirements for vapor permeability and water absorption for insulation from the inside. But it can be used.
The main thing is to provide maximum protection from moist air from the room and ventilate water vapor from the insulation layer. That is, create a ventilated facade, but in the reverse order: wall, gap, vapor-permeable membrane, mineral wool, vapor barrier film, decorative cladding indoors.
It is necessary to create a false wall at a distance of 2-3 cm from the main wall. And to ventilate water vapor, make ventilation holes at the bottom and top.
