Internal insulation of the apartment. How to insulate walls from the inside and is it necessary ...

Millions of people who live in apartments know first hand how cold they can be in winter. The operation of central heating is far from ideal, and autonomous heating is not cheap (both installation and the increasing costs of utilities in this case).

In order to improve the microclimate in the room with, as well as to avoid the appearance of mold (which is also a common problem), it is important to insulate the apartment.

And first of all, a person most often decides to make it from the inside, and insulating only the walls is both easier and cheaper, and you can do it yourself without resorting to the help (paid, of course) of specialists.

1 On the relevance and effectiveness of internal insulation

Initially, the issue of the overall effectiveness of the work from the inside should be considered. It should be noted right away that such (internal) insulation is always and everywhere (at home, in an apartment, in a garage, in a bathhouse, and so on) will be less effective than external. The bottom line is that the cold will still penetrate inside the room - since concrete (or brick) is not a significant barrier for it.

If the insulation is located only inside the apartment, it can even become harmful to the house: the dew point will shift and condensation will form on the surface of the walls. As a result, under the insulation, the walls will become overgrown with mold, which a person will not even see.

Thus, we can draw the following conclusion: if it is not possible to insulate the wall of the house from the outside, it is not always safe for the structure itself to perform work from the inside. Moreover, the exterior finish does not have to be extremely effective - even a small layer of heat and waterproofing will already be useful and will be able to prevent dew point shift.

Internal wall insulation will allow you to create a kind of “thermos” inside the apartment: the heat will be “locked” in the room and will not be able to go outside. This, by the way, is relevant not only for external walls - if the apartment next door is cold - the partition adjacent to it can also be insulated. Understanding the need for work is easy: just put your hand on this wall. We felt a noticeable cold - which means that warming is relevant.

It is recommended that you especially take care of wall insulation for those who live in a corner apartment - the rooms located on the corner of the house are the coldest, and the humidity in them is often high. Moreover, insulation from the inside in them should be performed only after insulation has been made from the outside - otherwise mold and fungus will appear on the surface very, very quickly.

In addition to protecting apartments from cold and moisture, the installation of insulation is also good because the sound insulation of the room is significantly improved. This is very important for residents of large cities, especially for those who live nearby:

• industrial zone;
• construction sites;
• roads, railways;
• crowded places (markets, shopping centers, stadiums);
• garages;
• airports.

In such cases, soundproofing is no less an issue than insulation. Moreover, modern insulation usually combines these qualities - finishing the wall of the house at the same time both insulates the structure and reduces the noise level in the room both.

1.1 Why is it important to insulate walls?

Most often, in apartments, only one “side” of the structure is insulated - the walls. In most cases, this is quite enough to significantly improve the microclimate in the room.

Residents of the extreme (first and last) floors can think about the insulation of the floor and ceiling. If your floor and ceiling border on the neighboring apartment, their thermal insulation is not a mandatory issue, unless you want to achieve the best possible result.

It is not very important to carry out the insulation of these surfaces inside the apartments for the following reasons:

1. Thermal insulation “takes away” at least 5 (and most often more) cm of free space. With an apartment ceiling height of 2.30 (on average) m, an extra 5-15 cm will be noticeable.
2. The floor of the apartment is unlikely to be cold, since the heat will rise from the neighbors living under you.
3. Insulation of the floor will create a difference in the height of the surface, which is not always convenient.
4. Floor insulation is a much more complicated procedure than wall insulation, and not every person can do it with their own hands.

Work on the insulation of the ceiling inside the apartments is more relevant than the insulation of the floor - due to the fact that the heated air always rises. In the absence of an effective "barrier" (which is the insulation), it will freely leave the room, "heating" the floor to your neighbors from above. So if your walls are already insulated, and the temperature of the house is still not comfortable enough, you can also think about finishing the ceiling with.

1.2 About the pros and cons of internal insulation

Compared to the outside, the work inside the panel house has a number of differences - both positive and negative. Let's take a look at the advantages of this method:

• you can insulate the wall with your own hands, without the use of climbing equipment;
• work can be carried out at any time of the year (whereas outside it is possible to insulate the surface only in warm, dry and calm weather);
• if necessary, the insulation can be dismantled / repaired at any time.

The disadvantages of warming apartments from the inside have already been mentioned above, but just in case, we will compile a specific list of them:

• reduction of free space indoors;
• low efficiency in the absence of external insulation;
• the need to completely redo the repair in the room (whereas the insulation, mounted outside, does not require the dismantling of finishing materials in the house).

2 About material selection

Internal heat and sound insulation can be performed using several technologies. The selected insulation distinguishes them from each other (or rather, its type). It can be:

1. Sheet materials: foam plastic, extruded polystyrene foam (EPS), mineral wool boards.
2. Roll materials: mineral wool, polyethylene foam.
3. Sprayed (liquid) materials: expanded polyurethane foam (PPU), .

However, each heater from the list above has a number of features - so we will consider them separately.

2.1 Use of foam and extruded polystyrene foam (EPS)

These materials can be combined into one category, since the differences between them are insignificant, and consist only in a number of characteristics that will practically not affect the efficiency of the work. Let's give a brief description of these insulators: light slabs of white (styrofoam) or orange (EPS) granules in which air is enclosed.

They are supplied in the form of plates of various sizes (most often - in the range of about 1 x 2 m) and with different thicknesses - the efficiency depends on it: the thicker the layer, the warmer it will be in the room.

Of the disadvantages of insulation with Penoplex (EPPS brand) or foam, the following points can be distinguished:

• the presence of joints between the sheets (and each joint is an extra chance for the penetration of cold and moisture);
• sound insulation when using the material is far from ideal (except when using a layer 10+ cm thick);
• the need to level the surface to a perfectly even level.

Separately, it should be said about such a minus as a significant reduction in space in the room. The insulation layer can be at least 5 cm (and this is just the insulation itself), the loss of which will be noticeable, especially when you consider that most apartments already have a small area.

Now let's consider what exactly needs to be done in order to insulate the surface with Penoplex (styrofoam) with your own hands:

1. The surface is cleaned from finishing materials to the “bare” wall, even removed.
2. The evenness of the surface is checked - for this, a level is used. In the presence of serious differences, bulges, depressions, they should be eliminated using plaster.
3. The surface is inspected for cracks and holes. If present, they should be eliminated using plaster.
4. Sheets of material are cut into more convenient parts (however, not too small - the optimal size is about 1 x 1.5 m).
5. The resulting segments are "trying on" to the wall.
6. The segments are adjusted.
7. The adhesive mixture is being prepared.
8. The mixture is evenly distributed on the surface of the insulation.
9. The segment is pressed tightly against the wall, starting from the bottom corner.
10. To fix the material, you can additionally fix it with dowels (optimally - 5 pieces: 4 in the corners, 10-15 cm from the edge, and 1 in the center).

At the same time, be careful: the dowels should not damage the wiring and should not be too long - if the partition is too thin.

Thereafter:

1. The installation of insulation continues, moving sideways.
2. Each next row is stacked with an offset relative to the previous one.
3. After the installation of all segments and the complete drying of the mixture, the joints are smeared with plaster / mounting foam / sealed with construction tape.
4. A vapor barrier film is glued (optional, but desirable).

2.2 Work steps when using foam (video)

2.3 Application of mineral wool (plates and rolls)

This material is not well suited for this type of work. Now they choose it extremely rarely, mainly - chasing cheapness. According to its characteristics, it is close to polystyrene, but the properties of mineral wool make it a less relevant option. The list of disadvantages is as follows:

• the material is prone to moisture accumulation;
• the material crumples and cakes like;
• crumbling cotton wool is harmful to human health (especially if children or allergy sufferers live in the house);
• sound insulation - no better than that of polystyrene (or even worse);
• increased complexity during operation (it is especially difficult to insulate the surface with a mineral wool roll);
• joints between segments.

It is impossible to single out tangible advantages compared to other materials, except, perhaps, for cheapness and the lack of the need for a perfectly flat surface. And even then the difference in cost, compared with the same foam, will be minimal.

Consider the steps that will allow you to insulate the wall using this material with your own hands:

1. The surface is cleaned from finishing materials to the "bare" wall.
2. The surface is checked for holes, cracks. If available, they are covered with plaster.
3. The material is cut into segments of a size convenient for installation.
4. The framing is being installed.
5. The material is placed between the rails.
6. Additionally, the material is fastened with dowels.
7. A vapor barrier film is glued on top of the rails.
8. Further finishing work is in progress.

2.4 Application of polyethylene foam

Of the existing heaters, this option is great for insulating apartments in a panel house from the inside. It is a rigid roll of material, on one side of which there is a foil layer, on the other - foamed polyethylene.

With its help, sound insulation is also performed - in this regard, the material surpasses the above options. Its significant advantage is the thickness: a few millimeters (4-5) of Penofol are equal in efficiency to several centimeters (3-4) of foam. Thus, it will minimally hide the space in the room.

In addition, the foil side (facing inside the apartments) enhances the “thermos effect”, shielding (reflecting) heat and not letting it out of the room. Yes, and in terms of work, it is ten times easier than both polystyrene and mineral wool - it can be used to insulate the wall of a corner (or any other) apartment simply and quickly.

2.5

At the same time, its use does not require leveling the surface and creating a multilayer "pie".

The steps are:

1. Surface - cleaned of dirt, old finishing materials.
2. Cracks and holes (if any) are sealed with plaster.
3. The material is glued to the surface with a special adhesive.

That's all - this is where the process of warming the apartments of the panel building ends, and you can proceed to further finishing.

2.6 Work steps when using polyethylene foam (video)

2.7 Application of expanded polyurethane foam (PUF)

In terms of efficiency, this material ranks first in the list of modern insulators. It has the best quality characteristics and is practically devoid of flaws. The advantages of PPU spraying technology include:

• lack of joints;
• absolute moisture resistance;
• small layer thickness with high efficiency (where 5-10 cm of foam or mineral wool is required, 2-3 cm of polyurethane foam can be used, and the result will be better);
• high coating speed (for 1 work shift - 8 hours - you can process about 100 "squares" of the surface, that is, all the outer walls in any of the average apartments).

Its use is especially relevant for a corner room - since the corners themselves very often create a problem during insulation, and it is not always possible to isolate them correctly and efficiently even by specialists. PPU is used to insulate apartments both from the inside and outside.

Of the minuses of such isolation of apartments, the following factors can be distinguished:

• relatively high cost;
• the impossibility of doing it yourself (this requires a special installation).

The stages of work when using the technology are as follows:

1. Surface - cleaned of old materials.
2. Cracks and holes are sealed with plaster (however, when using PPU, this item is not indispensable).
3. PPU is prepared (from two components that are mixed right on the spot, in the installation tank).
4. The material is sprayed onto the wall.

The material, which is a liquid suspension, solidifies in a few seconds upon contact with air, and a dense monolithic crust is formed on the wall surface, tightly glued to the surface.

If the windows are closed, the battery regulator is set to the maximum, but the apartment is still cold - first of all, you need to deal with the management company. They are obliged to provide a microclimate (temperature, humidity and other parameters) in accordance with sanitary and operational standards. If the water parameters in the batteries meet the standards, it means that the apartment has too much heat loss. However, such proceedings can last for weeks and months, and the rooms are already cold. A home master who knows how to handle tools is quite capable of solving the problem of cold in an apartment on his own.

What can be done outside and inside

Before rushing to buy materials and start destroying the finish, it would be nice to understand in what ways precious heat leaves the rooms in a panel or brick house. There are several such ways:

• External walls - up to 50%.
• Walls of adjacent apartments - 5-10%.
• Gender - up to 10% (, can reach up to 20%).
• Ceiling - up to 10% (especially on the top floor, it can reach up to 25% there).
• Glazed balcony or loggia - up to 10%.
• Windows, doors, ventilation - 5-15%.

Heat leaves the home in two ways:

• Warm air escapes with drafts through leaks in doors, windows and walls.
• Heat leaves the apartment by heat transfer through building structures that do not provide sufficient thermal insulation.

Is it possible to determine in what ways the heat leaves, in folk ways? Yes, the most popular methods are:

• Light a candle and slowly drive it near corners, windows, doors. Where the tongue of flame will fluctuate, there is an air flow. The direction of the flame can be determined from the deflection of the flame.
• Moisten your fingertips (there is the most sensitive skin) and drive them like a candle. The movement of air will feel like cold.

These methods are of high quality and very inaccurate. It is much more reliable to use devices that measure temperature remotely. The simplest of these is the pyrometer. It measures the temperature at a specific point on the surface. Having made several dozen measurements, for example, on an external wall, you can find the coldest point.

A thermal imager is even more convenient. It gives a picture of the entire surface at once and in the infrared range, zones of high temperatures are marked on the screen in more red tones, lower ones in blue. By pointing the thermal imager at the wall, you can immediately see where the heat goes. But such devices are very expensive, it is better to rent them for the duration of the inspection of the apartment.

The corner apartments on the last and first floors are deservedly considered the coldest. They have up to 3 planes in contact with cold space.

Features of warming the apartment

There are two fundamentally different ways to insulate an apartment:

• from within;
• outside.

Each of them has its own advantages and disadvantages.

How to insulate an apartment from the outside

In terms of overall efficiency, the external method is significantly superior to the internal one. Its main advantages are the following:

• Higher quality thermal insulation.
• The best microclimate after warming (not only temperature, but also humidity).
• The area and volume of the apartment is not reduced.
• The condensation zone (dew point) is taken out of the living quarters on the facade or in the thickness of the outer walls.
• The service life of wall structures is increased.

Insulation from the outside with foam sheets for plaster

The disadvantages of the external method are the following circumstances:

• It is necessary to coordinate with the operating organization and architectural supervision authorities.
• Independent performance of such work is very dangerous and is also prohibited by regulations.

For external insulation, it is necessary to involve an organization that has a license to work at height. Formally, the owner can carry out thermal insulation on the ground floor on his own, in practice, regulatory organizations are trying their best to prevent this.

How to make an apartment warmer from the inside

There are not many advantages to this method. The main ones are the following:

• The cost of materials and labor is much less.
• The complexity of the work and the qualifications of the workers are also lower.
• Work can be done by hand, without waiting for approval. Sometimes, especially if there is a small child in the apartment, this is a decisive factor. Literally: in the morning they decided, in the evening they already insulated.

Insulation from the inside with basalt wool along metal guides

The internal method has much more disadvantages and risks, it is much more difficult to properly perform internal insulation and not harm your apartment and residents.

Installing insulation inside creates the following problems:

• The dew point moves inward. You will have to take special measures for waterproofing and removing condensate.
• If this is not done, the increased humidity in the rooms will lead to the formation of mold and mildew. This can make finding people impossible.
• The wall ceases to receive heat from the dwelling and freezes through.
• The moisture contained in it freezes and thaws, this reduces the life of the wall.
• At the joints of the insulated wall, floor and ceiling, so-called "cold bridges" are formed.
• Internal thermal insulation reduces the area and volume of rooms, thereby reducing the quality of housing.
• Many insulating materials are not recommended for use in residential areas. They can emit unpleasant or even harmful fumes. When burned, toxic substances may be formed.

The thicker the layer of internal insulation, the more the wall freezes and the further the condensation zone moves inward

How to insulate a corner apartment

An unpleasant feature of corner apartments is that two wall surfaces are external at once. Installing additional sections of radiators does not always help. The coldest spot will be the corner between the two outer walls. With poorly made seams between the panels, it will definitely freeze, no matter how hot the batteries are. Conscientious developers pay special attention to the thermal insulation of corner apartments.

How to insulate a cold corner in an apartment from the inside? First you need to check the condition of the fillet weld. In inexpensive or older homes, the seams may be in poor condition. Heat leakage through the seams is determined by a thermal imager.

It is impossible to repair interpanel seams on your own - it is necessary to force the operating organization to carry out this repair. It consists in dismantling the seams (in other words, they are opened from the outside with a perforator), laying (or spraying) a new insulation and applying a new layer of plaster.

If the repair of the seams did not give the desired effect and it is still cool in the corner rooms, you will have to insist on external wall insulation.

Warming on wooden rails

Choice of material and tool

There are many brands of heaters of several main types on the modern market:

• Mineral wool. Basalt, glass and slag.
• Styrofoam.
• Polyurethane foam.
• Ecowool.
• Bulk materials. (When insulating apartments, they are practically not used)

When choosing a material, you need to compare the available alternatives according to the following parameters:

• Thermal conductivity. The lower the better.
• Moisture absorption coefficient. Materials with lower values ​​work more efficiently.
• Breathability. Smaller values ​​also mean better thermal insulation.
• Fire resistance class. Indicates the fire safety of the material.
• Life time.
• Composition. It is better to choose materials without harmful components.
• What is the price. The last but one of the most important features.

The most popular materials have the following characteristics.

Basalt wool

Produced from volcanic rocks, the structure consists of short fibers of great rigidity. Supplied in mats. It has a high density, special attention must be paid to the strength of fastening the mats to the wall.

The material is completely non-combustible, slows down the spread of fire. Does not contain harmful substances. It does not form them either during operation or in case of fire.

Installation of basalt wool

glass wool

It is made from waste products and broken glass. Its structure is formed by long elastic fibers. Supplied in rectangular mats and rolls. It has a lower density and greater elasticity than basalt wool.

It is also fireproof, does not form harmful substances.

A major disadvantage is the reduction in thermal insulation characteristics when wet.

Cutting glass wool

Styrofoam

Expanded polystyrene is often referred to as Styrofoam. The material has good thermal insulation properties, easy to install on rigid structures.

The main disadvantage of the material is that it burns well, and with the release of substances harmful to health. Styrofoam is also very brittle and not resistant to tensile and compressive loads, it easily crumbles. Extruded polystyrene foam is devoid of this drawback.

Installation of foam on the adhesive composition

polyurethane foam

This foamed plastic, also called penoizol, has excellent thermal insulation properties. It is sprayed liquid, foams and solidifies on the insulated surface in an even continuous layer without seams and without joints that cause heat loss.

It has excellent moisture resistance, zero hygroscopicity and vapor permeability. A significant disadvantage is the high cost of equipment for spraying.

Polyurethane foam spraying

Ecowool

A new heat insulator on the Russian construction market is made of cellulose fiber impregnated with boric acid and sodium triborate.

The material is the most environmentally friendly, does not burn and does not form any harmful substances. It is also sprayed onto vertical surfaces, wetted with a water-adhesive composition.

The equipment is cheaper than for spraying polyurethane foam, but also seems to be expensive.

Auxiliary materials and tools

In addition to the insulation itself, additional materials will be required:

• vapor barrier membrane and double-sided adhesive tape for gluing its canvases.
• External cladding: plaster or ventilated facade made of plastic or porcelain stoneware.
• Internal lining - moisture resistant drywall, wallpaper.
• Means that prevent the development of mold and fungus
• Lathing of wooden slats or metal profiles
• Fasteners.

Tools are needed ordinary, for general construction work. You will need:

• perforator or impact drill;
• construction knife;
• hacksaw;
• Bulgarian;
• screwdriver;
• tape measure, level, square.

To apply protective compounds, you will need an airbrush or roller.

Description of the process of warming with your own hands

The process of insulation varies depending on the type of insulation and material.

How to insulate your apartment from the outside if the heating is bad

The most popular for external insulation is foam. The sequence of actions is as follows:

• Calculate the area of ​​insulation and the thickness of the material. Purchase it.
• Based on the amount of insulation, purchase glue, fiberglass mesh, mounting metal profile, dish-shaped dowels.
• Fix the metal profile, maintaining the level.
• Glue the insulation boards to the wall.
• Fasten with dish-shaped dowels at the rate of 4-5 per panel.
• In cold regions, the foam is glued in two layers with overlap.
• Seal joints and cracks with mounting foam.
• Apply a thin layer of glue to the foam, press and roll the mounting grid with a rubber roller.
• After the glue has dried, prime and plaster the surface.
• Instead of plaster, you can use facade paint.

Scheme of external insulation

Independently, such work can be carried out only on the first floor. Above, you will have to involve a specialized construction organization.

How to insulate a cold room from the inside of the apartment with your own hands

The sequence of actions will be as follows:

• Calculate the amount of insulation.
• Purchase it and the appropriate quantities of a vapor barrier membrane, metal profile guides, fasteners, primer, plaster or moisture-resistant drywall.
• Remove the remnants of old wallpaper or paint from the wall to the concrete.

Scheme of internal insulation

• Impregnate the wall and adjacent surfaces with an anti-mold compound
• Fix the upper and lower start and finish profile. Attach vertical guides to them in increments of 60 cm.
• Lay mineral wool slabs between the wall and the profile.
• Fix the plates with dish-shaped dowels.
• Stretch the film of the vapor barrier membrane, securing it with double-sided tape. The joints between the sheets of the membrane also need to be glued with adhesive tape.
• Attach sheets of moisture-resistant drywall to the vertical guides.
• Putty it, prime it, then paint or stick wallpaper.

Placement of basalt wool slabs along metal profile guides

All joints of the side walls, ceiling and floor with an external wall must be covered with silicone sealant or foam glass.

Follow-up work after insulation

External insulation will not require any additional work. In the case of internal insulation, it will be necessary to periodically check the condition of the insulation and vapor barrier - whether condensate accumulates behind the drywall. If it is found, you will have to take care of the ventilation of the space between the drywall and the insulation. If mold is found behind the drywall, the insulation will have to be disassembled and re-treated with anti-mold reagents.

The actual problem of most apartment owners is how to insulate the walls. The heating season starts in September and ends in mid-May, but it often gets cold because of the flimsy construction of the house.

How to insulate the walls in the apartment from the inside under the wallpaper

A common material for interior wall decoration is wallpaper. There is a huge assortment on the market: with different ornaments and patterns, liquid and paper, non-woven and vinyl. But what kind of insulation to use for this material?

Is it possible to insulate the walls inside the apartment under the wallpaper

Recently, the trend to insulate the walls of the house has gained wide popularity. It is not always possible to make insulation from the outside, but from the inside it is possible at any time. There is a wide range of functional heaters on the construction market. The advantages of such materials:

• prevent the occurrence of fungi and dampness on the walls;
• big savings on heating in cold weather;
• protect walls from condensation;
• level the surface for wallpapering, eliminate roughness and unevenness;
• additional soundproofing;
• long service life.

The advantage of insulation under the wallpaper is that the work is easy to do on your own, it saves money.

What materials can be used for internal insulation

The main types of insulation for wallpaper:

1. Plaster mortar with thermal insulation properties. They have several types of filler:

• based on sawdust. Environmentally friendly, but not suitable for rooms with a high level of moisture (balcony, bathroom);
• from polystyrene foam. Excellent noise suppression and thermal insulation. But not resistant to fire and flammable;
• in the form of perlite or vermiculite (mineral base). Fireproof, but not moisture resistant;
• foam glass.

Plaster dissolve requires further finishing with putty.

1. Cork is eco-friendly and safe. This type is durable, has sound insulation, heat insulation, hides wall defects. Minus - the price is above average.
2. Rolled - Polyfoam, is made of foamed polyethylene foam. On the one hand, the material does not have an additional coating, and from the outside it is covered with special durable paper. This allows you to glue different types of wallpaper, even heavy ones.

Made in the form of a roll. There is a view with a foil reinforced coating on one side.

Keeps the climate in the room, is not affected by moisture and mechanical damage. Has a long service life.

1. Less commonly used extruded polystyrene foam. But before mounting on the wall, the surfaces must be leveled.

Sometimes drywall is used for these purposes, but the installation of such a finish requires additional room space, and the installation itself is time-consuming.

There are special warm wallpapers on sale, they consist of several layers: oilcloth, foil and spunbond. But this type is not easy to glue, because they are heavy, and the range of colors is poor.

Cork insulation will hide the unevenness and roughness of the wall.

What materials cannot be used

Relatively recently, a popular method of thermal insulation was to cover the walls with polystyrene foam (expanded polystyrene).

Due to its low cost, the material is often used to this day for facades, ceilings and other surfaces. However, it has huge disadvantages and is not suitable for upholstery under wallpaper:

• wallpaper pasted on foam plastic is easily subjected to mechanical impact and come off. This is due to the fact that the material does not have the necessary rigidity;
• to obtain the desired level of insulation, you will need a layer of foam at least five centimeters thick. Such a design will not stand out aesthetically;
• in the subsequent repair of the room, you will have to remove not only the wallpaper, but also the insulation itself. It will not be possible to remove the finishing material without damage;
• one of the important reasons why foam cannot be used is flammability. According to the rules, during installation, it must be insulated with another non-combustible layer.

In order for the heat-insulating material to meet the stated requirements, it is necessary to choose its type correctly, taking into account the condition of the walls and the type of wallpaper. Recommendations:

• roll-type heaters have additional functions: they level the surface, have soundproofing and vapor barrier qualities, and wallpaper can be glued on them several times;
• when buying, read reviews about the manufacturer and the technical qualities of the product;
• consult with the seller before choosing, specify the characteristics of the material;
• cork insulation costs on average from 900 to 6 thousand rubles, while roll insulation is in the region of 900-1000 rubles apiece. Prices vary depending on the company.

High-quality Polyfoam is elastic, does not tear and has no smell. If the material does not have these characteristics, then this indicates poor quality.

How to insulate inside the wall with your own hands with rolled insulation

A common insulation is rolled. Do-it-yourself installation technique:

1. The surface of the wall must be prepared: cleaned of the old coating, sanded bumps and cracks.
2. Prime and wait for complete drying. Sometimes a repeat of the procedure is required if the wall has large roughness.
3. Then measure the required amount of roll insulation, be sure to leave a small gap. Cut into equal pieces.
4. Prepare the adhesive solution strictly according to the instructions. Some types of Polyphoma are self-adhesive.
5. Next, you need to stick the insulation, almost the same as wallpaper. It is important to smooth and eliminate air bubbles.
6. The last step is to seal all the joints with masking tape.

After completion of work, you need to wait for some time, usually from one to three days. This is indicated in the instructions. Then you can do further finishing.

When installing the insulation, there should be no drafts in the apartment, the permissible humidity is not more than 50%.

Making repairs in the apartment, you should definitely pay attention to the issue of maintaining heat. Modern materials have great functionality, the main thing is to choose the right one and consult with experts. The most popular are rolled and cork insulation. Following the advice, the material is easy to install by yourself.

Useful video

High heating costs and the unwillingness of the owner of the house to insulate the structure of the building from the outside, force residents to look for other solutions. One of them is the insulation of the apartment from the inside, thereby reducing the usable space. We offer a way to insulate an apartment from the inside using insulating boards with glass wool and Multipor mineral boards.

Warming the apartment from the inside - what you need to know

You will learn:

• what factors should be taken into account when designing and implementing thermal insulation inside the dwelling;
• how to properly install thermal insulation from the inside;
• properties and application of insulating boards.

For apartment users, comfort and low heating bills are most important, and therefore, if there is no solution to insulate the building from the outside, the only solution is to insulate the external walls of the apartment from the inside. However, you should be aware that, according to the laws of building physics, insulation from the inside is not quite the best solution. When installing insulation on an internal wall, several important factors should be considered:

1. In the case of wall insulation from the inside, it will not help to avoid temperature bridges.
2. The outer wall (solid brick walls) on the cold side of the barrier is exposed to moisture, which can cause water to freeze in the cracks in the wall.
3. Internal insulation must be carefully thought out and implemented, and installed only in the freezing parts of the wall.

How to insulate an apartment from the inside - step by step instructions

Before proceeding with the thermal insulation of the walls, you must remove all elements, such as wall-mounted radiators, that should not be under the insulation layer. For good thermal insulation and simple and quick installation, for wall insulation, it is better to use sheet glass wool or mineral wool, laid in a frame of profiles and covered with drywall sheets.

In case of internal thermal insulation, windows should also be replaced, (if they require replacement) choosing a model with better insulation parameters.

The first step is to install the wall profiles. The photo shows a finished wall for laying wall heat-insulating boards.

Use vapor barrier layers over the profiles. To avoid problems with fixing drywall in the corner, the main wall is sheathed first, after which the corner frame profile is mounted.

To avoid cooling of the corners, install the insulation perpendicular to the insulated wall.

Leave a margin of vapor barrier in the corner to connect it to the corner frame insulation.

The corner part of the wall should be insulated from 60 to 100 cm in length. In addition, the floor and ceiling must be insulated with a vapor barrier.

Tightly cover the frame of the profile and mineral wool with a vapor barrier, making overlaps on the ceiling, floor and walls. Use double-sided adhesive tape to seal the vapor barrier to the wall and floor.

To insulate a building from the inside, energy-saving mineral wool insulation with a thermal conductivity coefficient of 0.030 W/(mx°C) is recommended, which has more than 20% greater insulating power compared to other materials used in construction and intended for use in areas requiring a thin layer isolation.

Wall insulation with Multipor mineral boards

Multipor is a cellular insulating material made from sand, lime and water. This is an environmentally friendly material, prevents the formation of mold, its thermal conductivity is 0.045 W / (mx ° C).

Preparation and isolation of the wall surface

Before starting work, thoroughly clean the surface of the walls from the remnants of old plaster and paint. The floor should be covered with a film and fixed to the wall with electrical tape. A damper tape is laid on the film along the perimeter of the angle between the wall and the floor.

Preparation of the solution for application to the surface of the block

Prepare the solution by adding the appropriate amount of water according to the instructions, and then mix with a mixer until the consistency of thick sour cream.

The finished solution is distributed over the entire surface of the block using a notched trowel.

Fixing the block to the wall

When properly applied, the mortar should have a thickness of approximately 8-10 mm over the entire surface of the block.

Carefully press the block against the wall, moving it close to the previous block. Check with a level that the blocks are fixed evenly.

Avoid vertical and horizontal seams flush with the edge of the corner.

Insulate part of the ceiling to avoid thermal bridges

If you have the last floor, then the ceiling should also be insulated. In the event that you have a cold corner, then we warm it 60-100 cm from the corner.

Alignment and finishing of walls

These plates are easy to grind, you can easily remove any irregularities.

Install perforated corners on all slopes using crack protection mesh. Also draw a grid over the entire area of ​​the blocks.