Insulation inside. Do-it-yourself correct wall insulation from inside a private house in several ways. Correct internal wall insulation in a house or apartment

According to all building laws, wall insulation from the inside in a private house is not entirely correct, or rather, nonsense. The dew point shifts, the surface begins to get wet, and a fungus develops. It is correct to insulate on the outside, but what if this is impossible?

Cons of internal thermal insulation

Insulating the walls of a private house from the inside can entail many problems, and the appearance of a banal fungus is one of them. In addition, condensate vapors at a certain moment will find a way out, soaking drywall through and through, bringing wooden lining and other finishing walls to rot.

When deciding on internal wall insulation, it is important to understand what a dew point is. This is the contact of warm and cold air. At this moment, condensation appears. With a wall not insulated from the inside, the dew point is in its thickness (and this is correct according to building codes). External insulation shifts it closer to the street (even better), and insulation from the inside, on the contrary, drives it into the living space. Often it turns out to be from the inside, on the border of the wall and the insulation, or in the insulation itself. And this is fraught with the above-described consequences.

According to building codes, the vapor permeability of the materials that make up the walls of a private house should be distributed in such a way that there is a vapor-proof insulation inside the dwelling, and vapor-permeable from the street side. In the middle, the vapor permeability of the material should be greater than the inner one and less than the outer one.

Now let's imagine the vapor permeability of mineral wool - a popular "breathing" insulation for interior work in a private house. Minvata passes steam well, while brick or concrete walls let it pass through, but poorly. The result is an accumulation of moisture on the border with the insulation, a wall that is constantly weeping and gaining moisture, and besides, it is not insulated from the outside. Ultimately, the lifespan of a home insulated in this way is greatly reduced by the multiple freeze / thaw cycles.

The meaning of insulation is to isolate freezing walls from the effects of cold air, and it is impossible to achieve this with insulation from the inside. But, when it is cold in a private house, all methods are good. Consider the popular insulation options.

Important. Be sure to correctly calculate the insulation for the internal thermal insulation of the walls. It is possible that the walls themselves are thick enough not to let cold air into the room. If so, check if the ceiling in the house is insulated well enough, as up to 40% of the heat can go through it.

Wall insulation from the inside: materials

If the insulation of the walls in the house from the inside is done correctly, but the temperature in the room is still uncomfortable, you should think about where the precious heat goes. The most likely option is a ceiling. In his favor, it can also be said that the attic very often turns out to be not insulated, not to mention the roof.

As insulation for the ceiling of a private house, it is worth considering:

penoplex;
mineral wool;
expanded clay;
ecowool;
polyurethane foam.

In all cases, except for insulation with polyurethane foam, waterproofing is laid on the attic lags free of dust and dirt. Insulation is placed or filled into the niches between them. Mineral wool, expanded clay and ecowool necessarily require a second layer of high-quality waterproofing. Penoplex, due to its extremely low vapor permeability, does not need it. From above, you can lay a rough floor and equip a room for storing the equipment you need on the farm.

For polyurethane foam, you just need to clean the attic from debris and dust and call specialists. When the insulation hardens, it will be possible to lay a finishing floor on top. To insulate the ceiling of a private house with ecowool, you will also need to call the masters and preliminary cleaning the attic. When all the niches between the lags are blown out with insulation, you can start laying a sub-floor made of boards or plywood.

Aerated concrete slabs and / or rolled foil insulation are suitable as insulation of the ceiling from the inside. Aerated concrete slabs are glued to the prepared (leveled) ceiling with foam glue. The joints between them are closed with a sealant. After the glue dries, the insulated surface needs to be plastered and whitewashed, or choose another finish.

Roll foil insulation can be used as additional insulation for aerated concrete slabs or as an independent insulation of the ceiling, which is already thermally insulated from the attic. For such a material, the ideal evenness of the ceiling is not needed. It is better to purchase a self-adhesive insulation. It will need to be glued to the ceiling. Then install the crate with a timber thickness of at least 3 centimeters. And already on it, mount the topcoat, for example, a suspended ceiling made of plasterboard. Other options are also possible.

Internal insulation of a house is an undesirable process. It is not recommended to carry out work on your own without consulting with specialists. They will help you calculate the required thickness of the insulation for the inner walls, tell you how to install it correctly and what measures to take so that the insulation from the inside does not have to be redone.

Every year, utility bills are growing, especially for heating and electricity, and the rooms are still cold, even when the batteries are hot. The best and most effective solution to the problems of keeping warm is the insulation of the walls of the apartments outside or inside the premises.

It can be difficult to implement external insulation in practice if:

Useful information:

the facade of the building has an expensive finish;
the apartment is adjacent to unheated technical premises;
the building in which you live is an architectural monument, and it is not possible to obtain a work permit;
the building is multi-storey, the insulation of the wall of one apartment spoils the design of the facade of the entire building;
insulation must be carried out with the entire riser, but this is not always realistic due to the financial capabilities of individual residents;
attraction of construction companies requires significant cash injections.

For the preservation of heat, it is necessary to take care of the tightness of the doorway, etc. A simple way to create a comfortable microclimate in an apartment: in the summer heat, the desired coolness, and in the winter cold, warmth is to insulate the walls of the apartment rooms from the inside. We will find out how to choose the right insulation in a wide range of products offered.

The choice of insulation for an apartment

The work of insulating apartments from the inside is difficult and time-consuming. Experts do not have a common opinion and recommendations on wall insulation, although there are many developments and proposals, but in one thing they are the same - for a good result it is necessary to purchase high-quality material and properly prepare the wall surface.

Wall surface preparation. The walls need to be leveled. If the new building and the wall is brick, it is necessary, if it is concrete, it is enough to level it with a putty. If we decide to insulate the walls of the apartment in which we live, we need to clean them of wallpaper, paint, remove nails, dowels from the surface, and cover the chips and grooves with alabaster, if there are protruding irregularities to beat off. In the presence of fungus or mold, we clean it with an emery cloth, and wash and dry the walls, putty the surface, if there are significant irregularities, we will plaster.
Site preparation. When preparing the wall, we remove the plinth and floor covering, baguette so that nothing interferes with the installation of foam plates. Primer a dry wall with a brush or spray, you can use an anti-fungal primer. Experts recommend laying a waterproofing material between the PPS plates and the wall, then moisture will not get on the insulation.
Styrofoam laying. After completely leveling and drying the wall surface, we begin to lay the foam, starting from the corner, from the floor. We press the insulation tightly to the surface and drill a hole exactly in the center with a 5 cm deepening into the wall, drive in fasteners - an umbrella, and then a dowel so that the cap does not protrude on the surface of the sheet. We carefully fix the foam plate in 5-6 places. And so we carefully press each sheet to the wall and to each other, we provide a tight and monolithic fastening. If gaps have formed, they can be removed with polyurethane foam.
Nowadays, more and more often, glue is used to fix the foam, which is applied to the wall with a comb.
We seal the seams between the foam sheets. We apply glue to all seams, and on top we apply a reinforced tape, so that it becomes a single whole with the foam surface and does not appear in the form of irregularities and folds. To obtain the desired effect, we tighten it and press it with a spatula against the foam and press it into the adhesive mixture. We also coat the caps of the fastening elements with glue. It is impossible for gaps to remain, they become "cold bridges" and nullify all the work.
We lay the vapor barrier material. After the surface becomes dry at the seams, it is necessary to cover the insulation with a special material. To do this, we apply a mesh (film) over the foam, which protects it from moisture coming from inside the room. On top of the seams covered with a reinforced mesh, we apply glue along its width and apply a vapor barrier material, sink it into the glue with a spatula, and so on, each row with a slight overlap. After the wall is covered with a mesh, we smooth out irregularities with sandpaper or a special grinding tool.
Bottom line. Before us is a flat wall, which can be decorated at your discretion.

Thermal insulation of apartment walls with underfloor heating mats

This method of insulation is used extremely rarely and can easily be called experimental. If the walls are very cold, this is a great option to preserve and increase the heat in the room, although the consumption of electricity increases.
The work is carried out in several stages:

we attach a mat ready for use on the wall and turn it on in extreme cold;
warm up the wall until the condensation formed due to temperature differences disappears;
we insulate with heat-insulating material to the required thickness.
the wall is dry, you can start finishing.

Applying warm plaster

Modern construction is developing at lightning speed. It is difficult to follow new creative innovations in the technology of indoor insulation from the inside. What was progressive yesterday seems to be labor-intensive, complex and of less quality today. This applies to the insulation of apartments using the warm plaster method; relatively recently, this method was very popular. It is worth mentioning this option, maybe someone, due to certain circumstances, will be interested in it. The whole point is with a layer of 100 mm, so that it holds, we do the work in three stages:

Liquid plaster is "sprayed" on the wall with a layer of 10 mm, filling all cracks, recesses, cracks in the surface.
After the first layer has dried, apply the base layer 60 mm and dry thoroughly as well.
Finishing layer - 5 mm trowel.

The process is laborious, it takes a lot of time and effort to dry each layer, professional skills are required in order to complete the work.

We provide effective ventilation of the room insulated from the inside

Proper ventilation is essential for the health of both the home and the occupants. Thermal insulation of an apartment often leads to a violation of certain ventilation conditions in the apartment. That is, it is important to ensure the temperature, humidity, speed of air flow. If the balance is disturbed, then on the walls, and due to a lack of oxygen, residents will suffer from headaches and weakness.

Natural ventilation has a number of disadvantages: heat loss in winter, in summer it is impossible to carry out normal air conditioning, noise, dust. To create an optimal microclimate, forced ventilation using duct fans is required. Their start can be blocked by turning on the lighting. All ventilation grilles must be opened for better air exchange.

Daily airing of the rooms will not hurt either.

Warming of apartments is carried out in a complex with insulation of the floor (especially the first floor), ceiling or roof (important if the room is located on the last floor), doors, windows.

Zapin

If the house or apartment is cold and uncomfortable in frosts, and you continue to pay huge sums for heating, then you should think about whether there is a reason why the heat is not retained inside the premises. The simplest assumption is that the heat escapes through the walls.

But internal insulation is usually carried out only in extreme cases, for example, when the authorities impose a ban on changing the facade. If there is a seam between buildings behind the wall, then external thermal insulation will also be impossible. Sometimes this approach cannot be implemented when there is an elevator shaft or an unheated room behind the wall, to which there is no access.

Features of insulation from the inside

If you are faced with the question of how to insulate the walls of a brick house from the inside, then you should remember that the main problem in carrying out such work is the fact that the wall can begin to freeze even more. This leads to a shift in the dew point when moisture begins to condense, moving to the surface of the wall. Condensation causes dampness, which destroys materials and the finishing layer. All this contributes to the deterioration of the thermal insulation properties of the insulation, and the heat loss in this case turns out to be even higher, and high humidity is also added to this problem.

It is the brick walls that are subject to greater destruction. In order to avoid this, you should choose heaters, the vapor permeability of which is minimal, and there is no moisture absorption. During installation, there should be no joints and seams between the canvases through which condensed moisture could penetrate into the premises. These criteria do not fit:

liquid ceramics;
mineral wool;
drywall;
cork covering;
warm plaster.

The latter option can be used only at the final stage. Moisture-absorbing fibrous and vapor-permeable materials are not suitable for thermal insulation of walls from the inside. It is better to refuse expanded polystyrene, because with it it is rather difficult to achieve proper joining of the material with the walls without using a solution. The joints between the canvases will play an important role in reducing the tightness.

What to consider before starting insulation

Before insulating the wall from the inside with your own hands, you must make sure that it is as dry as possible. The insulation should have a minimum vapor permeability and high moisture resistance. The wall must be protected with hydro and vapor barrier. The insulation layer should not have cracks, joints and gaps.

If you want to insulate the walls in an apartment from the inside in a panel house, then one of the best solutions is the construction of another wall inside the room. It should fit tightly with the outer one or be separated from it by an air gap. Sometimes a layer of thermal insulation is placed between these surfaces, which acts as a buffer. But such measures reduce the usable area of the premises to 7 m 3.

Material selection

Before starting work, you should ask yourself how to insulate the walls of the house from the inside. For example, polyurethane foam allows you to create a moisture-resistant barrier with high thermal insulation properties. The problem can only be expressed in the method of application. Initially, the material is a foamed liquid that hardens quickly. To form a flat base and sufficient thickness, formwork should be installed, filling the internal space with parts. Using wireframes will not work. Elements of such a system made of metal or wood can also become sources of moisture.

After the formation of the surface of the insulating layer, it is necessary to install water and vapor protection. For this, a plastic wrap is used, which is fixed to adjacent walls, floor and ceiling using slats. Bonding is carried out with mastic or sealant.

Polyurethane foam is characterized by low strength and density. This indicates that subsequent finishing and plastering will not be possible. To do this, it is necessary to erect plasterboard walls, which are erected on a frame and fixed on the adjacent wall, floor and ceiling. at the same time, it will be located at the junction of the polyurethane foam and the wall or in the thickness of the thermal insulation.

Insulation with a double wall

If you want to insulate a wall in an apartment from the inside, then you can use the Double Wall technology. The warm floor will act as a thermal barrier. Heating elements are installed on the wall surface. Heating can be turned on only in severe frosts in order to warm up the inner surface of the wall and shift the dew point.

For the normal decoration of the room, a second wall of plasterboard or brick is installed. Insulation is mounted on the false wall from the side of the opening. This option will save in severe frosts and exclude destruction, as well as the formation of dampness. But you will spend huge amounts of money on electricity. This is due to the fact that you will heat not only the volume of air in the room, but also the street.

Using penoplex

If you still have not decided how to insulate the walls of the house from the inside, then you can use expanded polystyrene or expanded polystyrene foam. For the reason that it does not meet the characteristics for carrying out such work, it is necessary to pay special attention to the installation work. The material consists of smooth sheets of dense material. During the installation process, joints will certainly form between them. It will not be possible to get rid of them completely, so a layer of sealant will have to be applied to the ends.

The technology of applying the solution with separate cakes should be abandoned. This is due to the fact that as a result, air chambers are formed, where condensation accumulates. In this case, water finds slots for entering the room. The only option would be to apply glue to the entire sheet and tight adhesion of the material to the wall throughout the entire area. Before applying the solution, it is necessary to use a needle roller, which is used to process the surface of the material. This will ensure the best penetration of the solution. This is especially true for the version with penoplex.

This method of fixing will require leveling the wall. It is impossible to use ordinary cement-sand mortar. It is better to use a mixture that forms a waterproof layer. The use of anchors should also be discarded. This is due to the fact that in the places of their installation, leaking transitions will form.

If you plan to use the mesh reinforcement method and will apply plaster over the foam, then the structure should be reinforced with profiles that are located between the insulation sheets and are fixed from above and below to the floor and ceiling.

The order of work

If you decide to insulate the wall in the apartment from the inside, then after choosing a specific method of carrying out the work, you must bring the surface to perfect condition. For this, the old coating is removed from the base in the form of cladding, decorative elements, paint and wallpaper. The plaster is also removed. You should see a concrete slab or brickwork.

The surface should be cleaned of dust and dirt using a broom and a vacuum cleaner. Particular attention should be paid to places where the walls were especially damp. Before insulating the wall from the inside, it should be treated with an antiseptic and covered with a primer. After each operation, the base is left to dry.

It should be primed with a compound with deep penetration. If you plan to use foam or heating elements, then the wall is plastered and leveled. You can use water repellents in this process, ready-made mixtures for decorating pools and bathrooms. In this case, the method of plastering using beacons is suitable. The technology is relevant if the size of the differences is more than 10 mm.

The plaster layer should dry within a few days. Only in this way will the material acquire normal strength. This process should not be accelerated with heaters. The surface of the plaster is primed again. This step should be omitted when it comes to concrete walls that are flat. In the case of them, you can seal the joints with a moisture-resistant solution, mastic or sealant.

Warming process

Quite often, home craftsmen are faced with the question of how to insulate the wall from the inside. The technology will be different in each case. Some of the nuances have been described above. After the installation of the thermal insulation layer, a drying period follows. Only then can you proceed with the installation of the second wall, where the finishing layer will be applied, like tiles, wallpaper, paint or cork.

For the installation of gypsum plasterboards, you must form a frame. The slabs will be attached to the ceiling, floor and walls. A gap of 5 cm should be left between the thermal insulation and the wall. If you want to use high density polystyrene foam, you can limit yourself to applying reinforcing mesh and plastering. But the durability and result will depend on the quality of the foam installation. The joints between the sheets are necessarily coated with a sealant, and the canvases are fixed on an evenly thin layer of mortar.

Thermal insulation of a corner apartment with mineral wool

If you are among those who wondered how to insulate a corner wall from the inside, then you can use mineral wool as a material for work. It consists of natural fibers, is environmentally friendly and is made from rocks by melting them. The sheets of this thermal insulation have low weight, excellent sound insulation and low thermal conductivity. Mineral wool is ready to serve for quite a long time, and is installed on the wall between the guides made of metal profiles or wood bars.

How to insulate a wall from the inside? This question is quite relevant for residents of corner apartments. When installing mineral wool on walls, you must take care of waterproofing. This is important, because a moist heat insulator loses its properties. Before starting the installation, the walls are covered with a moisture-proof film. You can make the frame from wooden slats, the distance between which will be equal to the width of the insulation plate. It is necessary to subtract about 2 cm from this value.

After laying the mineral wool, a layer of vapor barrier or superdiffusion membrane is next covered. Rails are packed on the guides, which will create an air gap, which is necessary for moisture to evaporate from the superdiffusion membrane. Plasterboard or plywood is stuffed onto the slats. It is better to work with mineral wool with glasses and gloves, as well as a respirator.

Insulation of a corner apartment with foam

If you are worried about how to insulate a wall in a corner apartment from the inside, then for this you can also use foam. It is more common because it is easy to install and its cost is affordable. For an apartment, you can purchase polystyrene foam, which contains substances that prevent ignition. Before laying the slabs, liquid waterproofing is applied to the leveled wall. Tile adhesive should be applied to the insulation sheets. A comb-type trowel acts as a tool for this.

After filling the entire area of the wall, a mounting mesh is glued on top, which is covered with putty. Once it is dry, the surface can be wallpaper or painted. Before insulating a wall from the inside, you should think about what material to use. If you use polystyrene or penoplex, then fungus and mold can form between the moisture-proof layer and the wall. This also applies to foil-clad penofol. This is due to the fact that the wall in a panel or brick house stops breathing, and in conditions of a cold circuit and access to moisture, it begins to become covered with condensation.

Warming with drywall

If you want to decide how to insulate a brick wall from the inside, you can use a technology that involves the use of drywall. This method is quick and easy. A distance of 3 cm should be maintained from the rough surface to the front base.With an increase in this space, more insulation will fit into the voids of the structure. This method is great for large rooms, because the wall thickens during the installation of thermal insulation.

The process begins with the installation of a frame made of metal profiles. They are removed from the wall by 2 cm. The frame must be made of a galvanized profile. A tape is glued to the base of the elements to isolate the surface from the plaster. This will protect the drywall from the cold that is transmitted through the metal profile. Mineral wool is laid in the cavity of the frame, and the layer between the wall and drywall will also become a heater.

The next step is to install drywall. When insulating rooms with high humidity, you should not save money - it is better to purchase a moisture-resistant material. At the final stage, the panels are finished with wallpaper.

Thermal insulation in a panel house

How to insulate a panel wall from the inside is a pressing question that interests many apartment owners. For work, you can use plaster. If we are talking about brickwork, then you can cope with the work in a short time. The material is laid in three layers, each of which dries well.

At the first stage, the composition is applied by spraying. This will fill in any irregularities and crevices. In this case, the thickness does not exceed 10 mm. The main stage is the application of a primer layer 5 cm thick. The effectiveness of thermal insulation will depend on the quality of this stage.

If you want to know how to insulate a wall in a panel house from the inside, you can use polystyrene foam. Even a beginner can handle its installation. But mineral wool, although it is an excellent option, takes up more space. It has one important advantage, which is that in the process of fixing the material does not need a prepared layer of plaster.

Insulation of the walls of an apartment may be required in multi-apartment panel buildings, since it is in them that the greatest problems are observed due to the small thickness of the partitions. If the walls do not protect the premises well from frost, then the load on the internal heating system increases, as well as utility bills, an unfavorable microclimate arises.

Rules and main disadvantages of wall insulation from the inside

Internal insulation, in comparison with external insulation, has a number of disadvantages that you need to be aware of before starting work on the installation of thermal insulation. Due to the location of the insulation on the inside of the apartment, the wall does not accumulate heat and it will not be possible to completely avoid heat loss, in any case, they will be up to 15%. Also, when insulating from the inside, the "dew point" will be located between the installed thermal insulator and the wall. Therefore, condensation can accumulate on the wall, which can cause fungus and mold to appear in the rooms.

Correctly in an apartment from the inside is much more difficult than from the outside, and the admission of even minor mistakes during installation work will lead to the fact that the wall will still freeze through, due to which construction, facing and thermal insulation materials will be subject to increased wear and tear.

To prevent the appearance of condensation on the walls, it is necessary to install a high-quality vapor barrier, it is she who protects the insulation from moisture and significantly prolongs its service.

For work, we need a high-quality vapor barrier film and waterproof construction tape (to seal the seams of the vapor barrier to be installed). Materials with low vapor permeability should be used as thermal insulation. It is very important that the vapor permeability of the insulation is lower than that of concrete walls. This will allow moisture to evaporate outside and not inside the apartment.

When installing the vapor barrier and insulation material, they should be very carefully coated with glue and tightly fixed on the wall so that there are no cavities between them. Before installation work, the walls should be primed with special compounds that protect the surfaces from fungus and mold. They also help to improve the adhesion of the materials to be mounted.

It is also recommended to provide high-quality ventilation in an insulated apartment. Standard natural ventilation is unlikely to be enough, therefore you need to either install a forced air circulation system or equip window frames with special valves through which fresh air will enter the rooms.

It is extremely important to correctly calculate the required thickness of the installed thermal insulator. The thickness of the insulation should correspond to the wall material and climatic conditions in the region. If the insulator layer is too small, it will not be able to reliably protect the apartment and its residents from the cold. During installation, special attention should be paid to the joints of the slabs, here there is a high probability of the occurrence of "cold bridges".

Can mineral wool be used for thermal insulation?

Mineral wool retains heat well and is able to "breathe", that is, let air pass through, however, due to temperature changes, this property can negatively affect the microclimate of the room and cause condensation to appear on the walls.

To prevent this from happening, it is necessary to choose high density materials. Mineral wool is not as dense as expanded polystyrene and urethane foam, therefore experts recommend either abandoning such insulation, or buying only those mineral wool slabs that have the highest possible density, comparable to the characteristics of foam.

Before installing the mineral wool, it is necessary to install a high-quality vapor barrier. If an insufficiently reliable waterproofing material is selected, or it is installed with violations, over time, a fungus will appear under the facing layer, to combat which it will be necessary to carry out complex and costly repair work.

Expanded polystyrene - advantages and installation rules

Polyfoam, polystyrene foam and polystyrene foam are much better suited for installation on concrete walls than mineral wool. They have all the necessary characteristics to provide a comfortable microclimate in the apartment. The most important advantage of expanded polystyrene lies in its low thermal conductivity, but it also has other positive qualities that make it possible to use it for installation on walls inside:

1. Light weight, smooth surface. These characteristics allow you to perform installation work with minimal labor costs and securely fix the material on the wall with glue.
2. Possibility of pre-processing. Before installation, polystyrene foam can be cut with an ordinary construction knife.
3. Strength. Expanded polystyrene can withstand strong tensile loads and even significant compression, which is very important, given the high loads on the thermal insulator with strong temperature drops and shrinkage of building structures.

Even the cheapest extruded polystyrene foam almost does not absorb moisture, which means that during its installation, you can refuse to install a vapor barrier layer. To insulate the joints of the slabs during repair, it is enough to seal them with polyurethane foam. Foam can also be used when installing expanded polystyrene boards on walls. When expanding, it fills all the gaps between the installed insulation and the surfaces to be treated, making the fastening reliable and completely sealed. Modern extruded polystyrene boards have spikes and grooves that simplify their installation.

For fixing the foam, you can use not only glue, but also special fasteners in the form of fungi. After placing the panels on the wall, they are drilled through and driven through the holes of the fasteners into the walls. This mount is very reliable and can be used in concrete and brick houses. After completion of the installation, all cracks and joints in the boards must be sealed. A variety of cladding materials can be mounted on top of the thermal insulation, including plaster and drywall sheets.

When choosing expanded polystyrene for insulation, it is necessary to take into account not only the advantages of this material, but also its disadvantages. For example, expanded polystyrene is not capable of providing high-quality sound insulation in rooms, in addition, it is highly flammable and can emit substances hazardous to humans when burning.

Internal thermal insulation with polyurethane foam

Polyurethane foam - polyurethane foam, foamed polymer, which is sprayed for insulation using special equipment. For the installation of such a heat insulator, a wooden crate is installed on the wall, which acts as support guides for the sprayed material, and it is also used for further installation of the cladding.

The main advantage of polyurethane foam is that when spraying it fills in all the irregularities, cracks and joints in the walls, creates an airtight, seamless surface that adheres tightly to the wall without voids and cavities. In other words, the installation of polyurethane foam completely protects the apartment from "cold bridges" and from the possibility of condensation.

Polyurethane foam is a moisture resistant material with low thermal conductivity characteristics. When installing it, it is not at all necessary to cover the walls with layers of hydro and vapor barrier. With its help, it is very easy and quick to insulate any walls, however, it is impossible to perform such work without specialized equipment, which is the main disadvantage of this method of insulation.

It is impossible to create a heat-insulating wall covering from polyurethane foam with your own hands; you will have to seek help from professionals who are well familiar with the insulation procedure and who have the necessary technical means to perform such work. Some companies are engaged in renting equipment for processing walls with polyurethane foam, this is an excellent opportunity for self-insulation, requiring much less financial costs than purchasing expensive equipment.

Cork is an unconventional remedy for dealing with cold walls

Cork is an insulation material produced in the form of cork slabs and rolls. It is environmentally friendly and completely safe for users, which is very important for the decoration of living rooms. Thanks to the excellent technical characteristics of cork, it can simultaneously insulate an apartment, provide it with high-quality sound insulation, and also increase the attractiveness of the interior walls.

Cork insulation can only be installed on perfectly flat surfaces, therefore, before installation, the walls should be prepared for repair. First, you need to completely remove the old facing materials from the surfaces, and then cover the walls with a primer with an antiseptic that can protect the room from biological contamination - fungus and mold.

Further, the walls are leveled. For this, plaster or drywall sheets are used. When leveling with drywall, use waterproof glue and polyurethane foam so that after installing the boards between them and the wall, there are no voids or cavities left. After fixing the drywall sheets on the wall, they should be additionally fixed with plastic fasteners such as "fungus" or anchors.

When the plasterboard or plaster base is dry, you can proceed with the installation of cork insulation. Sheets of natural wood or pieces of rolled material are carefully coated with special glue, after which they are tightly applied to the base. Cork insulation is also a full-fledged facing material that does not require subsequent finishing.

In addition to ease of installation and visual appeal, the positive characteristics of cork materials include the fact that they are thin. That is, the installation of insulation will not greatly reduce the area of the rooms to be faced, which is very important for small city apartments.

Penofol - polyethylene foam to improve the performance of the apartment

Penofol is polyethylene foam, the thickness of which is from 2 to 10 mm, which is sold in rolls. On the one hand, this material has a foil coating that reflects heat into the interior of the lined rooms. Before installing penofol, the surface of the walls must be prepared in exactly the same way as for the installation of cork cladding, after which you can fix the material with construction tape.

Penofol must be installed in such a way that its foil side faces the room. Such installation will turn the room into a kind of thermos that perfectly retains heat. Penofol strips for installation must be cut into lengths along the height of the room. The stripes must be installed like wallpaper - butt-to-end. The joints are additionally glued with special tape, which also has a foil surface.

Penofol is a high-quality insulation of an apartment, which can be done by hand, but heavy facing materials cannot be attached to it. For further finishing the walls of a cold apartment, it is necessary to install a wooden or profile crate over the foam layer layer, on which gypsum plasterboards can be attached. Drywall is covered with plaster, wallpaper or paint.

When installing drywall sheets, it is necessary to leave small gaps (about 5 mm), which will ensure good air circulation and prevent the formation of condensation and moisture accumulation on the insulation. Penofol is one of the best materials for thermal insulation, which can be used alone or together with other heaters, for example, with expanded polystyrene.

Professionals recommend carefully examining the walls in the apartment before installing any facing material. Only if no traces of mold are found on the surfaces, you can proceed with the installation work. If the walls are infected, they must first be cleaned and protected from the reappearance of the fungus, and only after that proceed to insulation.

Many people suffer from the cold in their apartments and are thinking about how to insulate the walls. This business can be dealt with at any time, and if major repairs are to be made, 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 moisture when it rains. Thermal protection is still considered the main criterion for such work. Today there are materials and technologies that will help you do the work yourself. If the insulation inside the premises is carried out efficiently, then the heating costs become minimal.

Walls in corner apartments of high-rise buildings and in private houses suffer the most. Having decided to take up your apartment or house, you need to get acquainted with the peculiarities of work, find out the technological nuances. We will talk about how to insulate the walls from the inside in a private house.

We insulate houses from the inside

To create comfortable living conditions (keeping warm, getting rid of damp, moldy surfaces), the walls of houses can be insulated both from the inside and from the outside, from the side of the facade. Internal insulation is considered to be the most effective. Especially:

Taking care of the insulation of the house from the inside, it is necessary to choose the right materials that are vapor-tight. The work must comply with special technology, otherwise, instead of insulating a private house or apartment in a high-rise building, you will become the culprit for 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 those places where the joints and seams are not insulated.

How to choose the right insulation material for the walls?

If you have to deal with the insulation of the walls from the inside, you will have to take care of the choice of material. Special requirements are imposed on thermal insulation materials:

expanded polystyrene and mineral wool;
polyurethane foam and ecowool;
penoplex.

It is these building materials that are used if you need to do internal insulation.

If you decide to do the insulation of 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, which show in detail all the steps for installing insulation, both frame methods and frameless ones. Interested home owners can visually track all stages of the work.

In the event that there are no special construction skills, it is best to do the work contact specialized companies, otherwise you will have to redo everything, and this is additional material costs. Specialists carry out insulation work efficiently, quickly, observing the technology.

Mineral wool applications

You can insulate the walls with mineral wool. It is used most often, although this material cannot be called ideal. The fact is that after a while mineral wool begins to absorb moisture therefore it is not possible 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 by ten years.

Before insulation with mineral wool, a metal frame is mounted on the wall. 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 the useful area of the apartment will decrease.

We insulate the walls from the inside using expanded polystyrene

Expanded polystyrene has recently been gaining popularity as a heater. This material has:

low specific gravity;
minimum thickness, therefore installation does not require the installation of a frame;
room humidity does not affect the quality of the material;
fixed polystyrene foam with construction glue. You can also use dowels or liquid nails... But first, the joint areas are treated with polyurethane foam.

Penoplex is an environmentally friendly material for insulation

Penoplex, another name for expanded polystyrene foam, is an excellent material because it:

Styrofoam as insulation

The house can be upholstered from the inside with foam. Installation of the frame is not required for its installation. Material produced in the form of panels, which are simply glued directly to the wall. As an adhesive, you can take the one with which ceramic tiles are usually glued.

Glue is applied to the foam, then, by slightly pressing in, a mesh metal reinforcement is installed. The overlap must be at least 15 centimeters. This layer is then plastered or painted, then wallpaper is glued. Can be used when finishing with ceramic or tile.

The choice of insulation depends on the material of the walls.

Tired of freezing in winter and 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.

If the wall is made of brick, then foam, expanded polystyrene and mineral wool will work more efficiently in this case.
Walls, which are based on foam blocks, are usually insulated with foam, expanded polystyrene or expanded polystyrene.
In wooden houses, it is effective to use foam and polystyrene foam when insulating internal walls.
If the house is made of concrete, then each owner has the right to choose the material that he likes best, since there are no restrictions on the choice of insulation.
For insulation of log houses it is better to use ecowool, although you will have to install not only a vapor barrier, but also a crate.

Insulate the interior of your home by following special rules. High-quality insulation can be done with your own hands, if you heed the advice of experts. This primarily concerns the walls. When preparing them, you need to perform the following types of work:

Using a building hair dryer, spotlights, infrared lamps, air heaters, thoroughly dry the walls.
Check the integrity of the insulating materials, if there is damage, then they should be repaired. Such work is very important to protect the surface from dampness and steam.
All seams that form between the floor slabs, as well as the thermal insulation layer, must be processed.

When preparing the surface, a number of certain preparatory works are performed, which require a special careful approach:

How much does it cost to insulate a house inside?

If you decide to start creating comfortable conditions in your private house with your own hands, then it will cost much less than the services of 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 kind of insulation material you used and what additional work had to be done before installing the insulation.

It should be noted that internal work on house insulation is not always justified. Better, of course, to do this outside the building. But if its implementation is impossible for various reasons, then the standards fully allow for wall insulation in the inner space of houses.

Of course, for the sake of comfort and warmth have to sacrifice square meters, as insulation materials "eat up" part of the area due to their volumes. But, as they say, it is better to live in a slightly smaller house than in cold and damp conditions.

Perhaps modern technology will soon make it possible to make homes warm, saving space and at the same time eliminating condensation. So far, it is the above technologies and materials that make it possible to solve existing problems with keeping heat in a private house.