Insulated wallpaper. Warm wallpaper: features of selection and application. Features of insulation of internal walls

Features of choosing insulation for wallpaper

If you want to put wallpaper on top of the thermal insulation from the inside of the house, then you need to approach the choice of insulation used as carefully as possible, since not every material is suitable for this.

Natural cork insulation for wallpaper

This article will present insulation materials that are the best options for subsequent wallpapering. Their technical characteristics, as well as the technology for installing these materials, will be considered.

1 Is it possible to glue wallpaper over polystyrene foam?

The most popular insulation material was and remains polystyrene foam - ordinary polystyrene foam. Due to its minimal cost and good thermal insulation characteristics, this material is used everywhere - for insulating walls, facades, ceilings, floors, etc.

Of course, the rationality of using this insulation is difficult to dispute, but it is worth understanding that polystyrene foam is not the best choice for direct wallpapering.

Firstly, the surface of the foam does not have sufficient rigidity, as a result of which, even with minimal external influence (someone leaned against the wall, or the wall was caught by some object), the wallpaper will break through.

Secondly, since polystyrene foam, like Izover Optimal insulation, is a slab material, and for effective insulation from the inside of the walls you will need at least a 5-centimeter layer of insulation, the joints of the foam plastic after pasting will be very noticeable under the wallpaper.

Thirdly, when the time comes to redecorate the room, and you need to change the wallpaper, you will have to change the insulation along with it, since you will not be able to tear the wallpaper off the surface of the foam without damaging the latter.

And the last factor that prevents you from gluing wallpaper onto polystyrene foam is the issue of fire safety, since according to SNiPs, polystyrene foam must be insulated with a layer of non-flammable material.

If you want to insulate the walls from the inside of the house with polystyrene foam, then for subsequent wallpapering you can either cover the insulation with plasterboard, or cover the insulation with a reinforcing plaster composition using fiberglass plaster mesh. But for such a thing, sometimes it’s easier to buy polyurethane-based insulation in Kirov.

Plastering foam plastic using reinforcing mesh

Now let's talk about thermal insulation materials on which you can glue wallpaper without any additional preparation.
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1.1 Polyf

One of the easiest materials to use is polyf - roll insulation made from polyethylene foam.

On the side adjacent to the wall, polyfoam has no additional coating, but on the outside the material is covered with special high-density paper. The paper surface has good strength, which makes it possible to stick both regular and heavy vinyl wallpaper onto such insulation.

Poliform is manufactured in roll form. The insulation has the following dimensions: length – 14 m, width – 50 cm, thickness – 5 mm. The density of the material is 30 kg/m³.

Thermal insulation with polyfoam as well as insulation under siding. despite the small thickness of the material, it is quite effective, since the insulation has a minimum thermal conductivity coefficient, which is 0.03 W/μ, which is similar to a 12-centimeter brick wall, or 5-centimeter wood.

Due to its minimal thickness, Polyfom does not take up free space

Advantages of polyform in comparison with other insulation for walls under wallpaper:

Polyfom, in addition to insulation, significantly increases the sound insulation of walls. The noise reduction index of the material is about 30 dB, while it copes equally well with both impact noise and sound transmitted through the air;
Polyfom has a structure of closed cells, thanks to which polyfom is not prone to water absorption and steam diffusion. Insulating walls with penofom from the inside does not require additional vapor barrier and waterproofing;
Mechanical strength and resistance to deformation - the base of the polyfom is made of molecularly cross-linked polyethylene, which guarantees maximum strength of the material (with an external load of 2000 N/m², the elastic modulus of the polyfom is MPa);
The minimum weight (260 grams per 1 m²) and the high elasticity of the material make wall insulation with polyfoam extremely simple and problem-free;
Chemical inertness - none of the modern wallpaper adhesives will cause any harm to the polyphome (even glue for polypropylene and polyethylene);
Durability – microbiological resistance, together with mechanical strength and chemical inertness, guarantee a long service life of the polyfoam, which is about 50 years, without loss of the functional properties of the material.

The only disadvantage of polyfoam is the lack of fire resistance, but this is typical for all insulation materials made of foamed polymers.

Polyfom has a white thick paper coating

Installation of the polyfom is carried out in the following sequence:

The height of the walls is measured, and the polyfoam roll is cut into pieces of the required length;

Old wallpaper and a layer of damaged plaster are removed. All cracks, potholes and other defects found on the surface of the walls are filled with putty;

The wall is covered with a deep penetration primer. This may not be necessary, but the presence of a primer will significantly reduce the consumption of adhesive;

After the primer has dried, glue is evenly applied to the surface of the polyfoam and to the surface of the wall, after which the insulation is fixed to the wall. It is important that the temperature in the house is higher than +10, and the air humidity does not exceed 70%;

Polyfoam joints are taped with masking tape as materials for thermal insulation of the attic. after which the insulation is left for 72 hours, which is necessary for the material to dry. After the time has passed, the walls are covered with wallpaper.

1.2 Cork insulation

The only completely natural thermal insulation material that can be used for direct wallpapering is cork insulation.

The technical characteristics of cork insulation are as follows: thermal conductivity coefficient - 0.04 W/mk, density 100-130 kg/m³, flammability class - G3 (normally combustible material), nominal weight - 200 kg/m³.

Cork insulation 10 mm thick is usually used as an insulating backing for wallpaper.

Natural cork insulation for wallpaper

Cork insulation has the following advantages:

Environmental friendliness, and, as a result, complete safety for human health;
Durability;
Cork is a material that does not accumulate static charges;
Cork insulation does not harbor microorganisms; moreover, such insulation does not mold even in very damp indoor air;
Cork insulation, in addition to improving the temperature in the house, guarantees high-quality sound insulation of housing;
Cork backing for wallpaper allows you to hide defects and uneven walls.

According to reviews, natural cork insulation helps maintain optimal temperature conditions inside the house.

In winter, cork insulation allows, with similar heating of the house, to obtain a temperature 2-3 degrees higher than in an uninsulated building, and in summer, cork prevents the transfer of heat from the warmed walls to the air inside the room, as a result of which the building remains comfortably cool.

The only disadvantage of cork insulation is the cost, since natural material is an order of magnitude more expensive than artificial insulation.

The technology for insulating walls with cork insulation is as follows:

The surface is prepared - old wallpaper and granulated foam glass are removed. plaster, the wall is leveled with plaster, all cracks are sealed;

After the plaster has dried, the wall is covered with a deep penetration primer;

Cork insulation is cut into sections of suitable length;

According to the instructions, special glue for cork materials is diluted;

An adhesive composition is applied to the surface of the insulation and the wall with a roller, after which the thermal insulation is fixed to the wall. The insulation must be glued end-to-end;

The seams between the insulation sheets are sealed with adhesive;

If necessary, excess insulation should be trimmed with scissors. It is not recommended to use a knife, as it can tear the insulation that is wet from the glue.

Cork insulation structure

2 Reviews and opinions

Study the reviews of people who have experience using the insulation materials discussed in the article in order to make the right choice of thermal insulation materials for wallpapering.

Andrey, 35 years old, Rostov:

Having moved to a new apartment, I encountered the problem of mold on the walls, which the old owner of the home, having hidden the problem area with furniture, happily kept silent about. To solve this issue, we had to insulate the façade of the apartment with polystyrene foam, and glue the walls under the new wallpaper with polystyrene from the inside of the house.

I can only say positive things about this insulation - it is not expensive, easy to install, and effective. About four years after moving, I didn’t find any peeling on the wallpaper; it stuck firmly, like on a wall. At the same time, I forgot about the mold immediately after installing the polyphom.

Mikhail, 49 years old, Moscow:

When choosing a material for thermal insulation of walls from the inside of the house, I settled on cork insulation. My friends convinced me of the rationality of its use - from all my acquaintances who had experience working with cork insulation, I heard only positive reviews.

I did the insulation with my own hands, since the installation of roll insulation turned out to be relatively simple. In an insulated room, with constant heating, the temperature rose by almost 3 degrees. Overall, I was completely satisfied with the result.

2.1 Features of gluing insulation under wallpaper (video)
How to glue insulation under wallpaper

Insulation under wallpaper Pasting walls with roll insulation, features of insulation under wallpaper installation, its advantages, disadvantages and technology.

Features of thermal insulation

Advantages and disadvantages

Insulation technology

Preparing the base
Preparation of materials
Installation of the substrate

Wallpaper insulation is a special substrate designed to retain heat in a room, level the walls, insulate them heat and sound, as well as protect against mold, mildew and condensation. Installation of such material largely solves the problem of durability of the finishing coating of structures. We will tell you how to glue insulation under wallpaper on walls in this article.

Features of thermal insulation of walls using wallpaper backing

One of the types of wall insulation before wallpapering is roll insulation. It is performed using substrates about 8 mm thick, made on various bases:

Expanded polystyrene backing. This material is produced in the form of rolls. To fix it on the surface of the walls, glue or a mixture containing gypsum fine-grained plaster is used. Wallpaper is glued to such a substrate using a special polymer-cement glue. Expanded polystyrene insulation with an outer layer made of cardboard has the best adhesion to wallpaper. Insulating walls with this material is quite effective, since it is reliable, absorbs noise and vibration well, is resistant to humidity and mold, but its thermal insulation properties are somewhat lower than those of polyethylene substrates, which will be discussed further. Thermo-Tap insulation has good reviews. The size of its roll is 10x0.5 m, the price of 1 m 2 of material starts from 500 rubles.

Polyethylene foam backing. The foam material consists of welded cells filled with air and enclosed between layers of paper. Therefore, any special composition for attaching the substrate to the base is not required. Wallpaper glue is quite suitable for performing the entire range of work. This substrate has excellent adhesion to any type of surface. Today, this rolled material is the most popular option as thin thermal insulation for walls. Polif insulation for wallpaper is generally accepted. It goes on sale in rolls of 0.5x14 m, material thickness - 50 mm, density - 30 kg/m3. thermal conductivity - 0.039 W/m*K, sound absorption - up to 22 dB, price of a roll of Polif - 1200 rubles.

Cork backing. It is impeccable in terms of ecology, has excellent thermal insulation properties and absorbs sound well. Its presentable appearance eliminates the need for external wallpaper. However, the moisture resistance of such insulation leaves much to be desired, so the cork substrate is often impregnated with moisture-repellent compounds - wax, for example. For ease of fixation on the walls, the back side of the cork backing is impregnated with glue. The material is sold in rolls of 5 m2. The price of 1 m2 is 400 rubles. and more.

Backing combined with wallpaper. This material is wallpaper with insulation glued to the back side. For the production of such products, aluminum foil, synthetic fiber and the wallpaper itself are used. The installation costs of this insulation are minimal, but the material does not differ in variety.

Roll thermal insulation allows wallpaper to be repeatedly glued to its surface, and at the same time its characteristics remain unchanged. Substrates with a paper outer layer adhere tightly to the walls, while foil ones reflect heat well.

Insulation under wallpaper can only hide minor flaws in the walls. If it is not possible to level the surface before installing it, it would be better to use cork insulation. It can hide almost all flaws, but special glue is required to attach the cork material.

Advantages and disadvantages of insulation under wallpaper

Installing wall insulation under wallpaper has a number of undoubted advantages. Let us outline the main ones:

Insulation holds heat well in rooms adjacent to unheated enclosed spaces, such as a stairwell.

After installing such a covering, the sound insulation of the room increases, noises behind the walls become inaudible.

Insulation with a wallpaper backing is environmentally friendly insulation, since the material is intended specifically for work inside rooms and does not have any foreign odors or toxic emissions.

If the surface of the walls has small flaws in the form of bumps, stains, chips, they can always be hidden under soft and elastic wallpaper insulation. Its paper shell is guaranteed to protect the finish from stains and preserve its color and pattern.

The insulation is easily fixed to the surface with ordinary glue for heavy wallpaper and actively resists the formation of condensation. The material is easy to cut, lightweight and has good adhesion to many surfaces.

Due to the simple installation, roll insulation under the wallpaper can be applied independently, without involving unauthorized persons or specialists.

The disadvantage of thermal insulation is the flammability of the coating; it is afraid of open fire and supports its spread in the event of a fire. In addition, after a blow or strong pressure, dents may remain on the wallpaper with a backing.

When choosing roll insulation for wallpaper, you should take into account its technical properties, cost and the possibility of self-installation.

Technology of wall insulation under wallpaper

The process of installing a heat-insulating substrate is practically no different from conventional wallpapering of walls. The difference can only be in the composition of the adhesive. The work is carried out in stages and consists of preparing the surface and materials, priming the walls and sticking thermal insulation on them.

Preparing the base for installation of the substrate

Before gluing roll insulation under the wallpaper, it is necessary to remove old finishes, peeling plaster, dirt, protruding nails, fittings and other unnecessary parts from the walls. After cleaning, identified cracks and potholes should be sealed with cement mortar, and sagging mortar or concrete should be knocked off with a chisel.

Due to the fact that the insulating backing under the wallpaper smoothes out minor surface imperfections, there is no need to level it to perfection. But if there are differences on the walls of more than 5 mm, it is necessary to apply a thin layer of plaster on them.

After cleaning and leveling the surface, they should be primed. This stage of work is of particular importance: in addition to the fact that the primer layer exhibits antiseptic properties, it also increases adhesion between the wall and the thermal insulation substrate.

The work should be done with a roller or paint brush; all further actions are carried out only after the applied primer has dried. The time for drying it is indicated on the packaging of the material.

Preparation of materials for wall insulation under wallpaper

This stage of work consists of cutting the insulation under the wallpaper into sheets of the required size and stirring the adhesive composition. When selecting glue, you should focus on the type of insulating substrate and its weight. The best option would be to purchase an adhesive mixture with the addition of fine-grained gypsum putty or glue for heavy wallpaper.

To cut the insulation you will need a tape measure, a knife and a ruler. You should first measure the required height on the wall, and then roll out a roll of thermal insulation and cut it into sheets of the appropriate length.

The required number of rolls for insulating a room is calculated simply: you need to take the quotient of dividing the area of the walls of the room by the area of one rolled out roll of insulation. It is recommended to purchase the material with a small margin of 5-10% in case of trimming it at the junction of structures.

Before working with wallpaper insulation adhesive, you should study the instructions supplied with it, in which the manufacturer indicates the method of applying the composition, its drying time and area of application. It is recommended to use only a substance that is designed to work with a specific type of insulating substrate. Before applying to the surface, the adhesive composition must be thoroughly mixed.

Instructions for installing wallpaper underlay

When installing insulation on walls, the air and surface temperature should not be lower than +10°C, and environmental humidity should not exceed 70%. Before work, you should close the windows and doors of the room to avoid drafts; they are completely unacceptable.

Glue is applied using a roller and brush. It is necessary to evenly treat the base and the back side of the thermal insulation sheet with the composition, which, after soaking for 5 minutes, should be carefully applied to the wall in the right place according to the previously applied markings.

Installation of insulation sheets must be done vertically from top to bottom without gaps, joint to joint. To remove air from under the glued thermal insulation, the substrate must be rolled with a roller from the middle to the edges of the sheet. After securely fixing the canvases to the wall, their joints need to be taped with masking tape.

A day after completion of thermal insulation, the room can be ventilated. Wallpaper should be applied to the insulation only after it has completely dried, which takes 2-5 days.

Before pasting the walls with the finishing material, you should check the strength of the heat-insulating layer. To do this, a small section measuring 5x5 cm can be cut at the bottom of the wall.

How to glue the backing under the wallpaper - watch the video:

If you follow the technology of gluing insulation under wallpaper, you can save up to 20% of thermal energy. Rolled insulation is much more effective than wall hangings. In addition, warm wallpaper under the windowsills of your apartment will relieve you of cold bridges for a long time and will preserve the comfort of your home.

1 Is it possible to glue wallpaper over polystyrene foam?

Of course, the rationality of using this insulation is difficult to dispute, but it is worth understanding that polystyrene foam is not the best choice for direct wallpapering.

Secondly, since polystyrene foam is a slab material, and for effective insulation from the inside of the walls you will need at least a 5-centimeter layer of insulation, the joints of the foam plastic after pasting will be very noticeable under the wallpaper.

Now let's talk about thermal insulation materials on which you can glue wallpaper without any additional preparation.

1.1 Polyf

One of the easiest materials to use is polyf - roll insulation made from polyethylene foam.

Poliform is manufactured in roll form. The insulation has the following dimensions: length – 14 m, width – 50 cm, thickness – 5 mm. The density of the material is 30 kg/m³.

Thermal insulation with polyfoam, as well as, despite the small thickness of the material, is quite effective, since the insulation has a minimum thermal conductivity coefficient, which is 0.03 W/mk, which is similar to a 12-centimeter brick wall, or 5-centimeter wood.

Advantages of polyform in comparison with other insulation for walls under wallpaper:

Polyfom, in addition to insulation, significantly increases the sound insulation of walls. The noise reduction index of the material is about 30 dB, while it copes equally well with both impact noise and sound transmitted through the air;
Polyfom has a structure of closed cells, thanks to which polyfom is not prone to water absorption and steam diffusion. Insulating walls with penofom from the inside does not require additional vapor barrier and waterproofing;
Mechanical strength and resistance to deformation - the base of the polyfom is made of molecularly cross-linked polyethylene, which guarantees maximum strength of the material (with an external load of 2000 N/m², the elastic modulus of the polyfom is MPa);
The minimum weight (260 grams per 1 m²) and the high elasticity of the material make wall insulation with polyfoam extremely simple and problem-free;
Chemical inertness - none of the modern wallpaper adhesives will cause any harm to the polyphome (even);
Durability – microbiological resistance, together with mechanical strength and chemical inertness, guarantee a long service life of the polyfoam, which is about 50 years, without loss of the functional properties of the material.

The only disadvantage of polyfoam is the lack of fire resistance, but this is typical for all insulation materials made of foamed polymers.

Installation of the polyfom is carried out in the following sequence:

The height of the walls is measured, and the polyfoam roll is cut into pieces of the required length;
Old wallpaper and a layer of damaged plaster are removed. All cracks, potholes and other defects found on the surface of the walls are filled with putty;
The wall is covered with a deep penetration primer. This may not be necessary, but the presence of a primer will significantly reduce the consumption of adhesive;
After the primer has dried, glue is evenly applied to the surface of the polyfoam and to the surface of the wall, after which the insulation is fixed to the wall. It is important that the temperature in the house is higher than +10, and the air humidity does not exceed 70%;
The joints of the polyfoam are taped with masking tape like , after which the insulation is left for 72 hours, which is necessary for the material to dry. After the time has passed, the walls are covered with wallpaper.

1.2

The only completely natural thermal insulation material that can be used for direct wallpapering is cork insulation.

Cork insulation 10 mm thick is usually used as an insulating backing for wallpaper.

Cork insulation has the following advantages:

Environmental friendliness, and, as a result, complete safety for human health;
Durability;
Cork is a material that does not accumulate static charges;
Cork insulation does not harbor microorganisms; moreover, such insulation does not mold even in very damp indoor air;
Cork insulation, in addition to improving the temperature in the house, guarantees high-quality sound insulation of housing;
Cork backing for wallpaper allows you to hide defects and uneven walls.

According to reviews, natural cork insulation helps maintain optimal temperature conditions inside the house.

The only disadvantage of cork insulation is the cost, since natural material is an order of magnitude more expensive than artificial insulation.

The technology for insulating walls with cork insulation is as follows:

The surface is prepared - old wallpaper and plaster are removed, the wall is leveled with plaster, all cracks are sealed;
After the plaster has dried, the wall is covered with a deep penetration primer;
Cork insulation is cut into sections of suitable length;
According to the instructions, special glue for cork materials is diluted;
An adhesive composition is applied to the surface of the insulation and the wall with a roller, after which the thermal insulation is fixed to the wall. The insulation must be glued end-to-end;
The seams between the insulation sheets are sealed with adhesive;
If necessary, excess insulation should be trimmed with scissors. It is not recommended to use a knife, as it can tear the insulation that is wet from the glue.

Insulation for walls inside an apartment under wallpaper helps to increase the comfort of temperature conditions in winter or summer, which makes it possible to optimize heating and air conditioning costs. Thermal resistance works in both directions, and this type of repair in an already inhabited room, such as insulating the walls from the inside, allows you to achieve the desired result within a short time. Using specially developed materials, it is possible to perform thermal insulation work with virtually no loss of usable area of the room.

The main points of insulation under wallpaper

In an operating building that has the design thickness of the structures, additional thermal insulation of the outer wall in the apartment can be laid under the wallpaper without performing large capital works.

The materials can be used as reliable materials, and together they have several functions, which are distributed as follows:

energy saving;
soundproofing;
preventing the formation of moisture condensation on the finishing surface and, accordingly, the appearance of mold;
leveling (the foam layer elastically fits unevenness and hides minor differences);
repeated use (the guarantee for some types of such insulation is up to 50 years).

An example of a material that combines the listed functions in its characteristics is a polyph with a heat-reflecting layer (photo):

Despite the ease of installation using an adhesive composition, it also has an acceptable price in comparison with the economic effect obtained during the period of its operation.

Types of insulation

Depending on the size of the room and the degree of heat loss in winter, to insulate the walls of the house from the inside, you can use several, differing in the installation method and layer thickness. They are divided as follows:

Warm plaster. Dry building composition in the form of a plaster mixture with special fillers (perlite, vermiculite, foam glass, sawdust, fibers). Plastering work requires a lot of time and significant labor costs. The solution is applied in a layer up to 5 cm thick and will require a leveling procedure with gypsum or acrylic putty. It is quite suitable for insulating new walls that have not yet been plastered. The disadvantages of warm plaster include its high water absorption capacity. This means that she herself needs reliable protection from water vapor.
Plate materials. Insulation sheets are produced mainly from foamed polystyrene. Based on the cost of such materials, foam plastic is most often used for work inside the room. The thickness of the sheet varies from 2 to 10 cm, but usually no more than 5 cm is chosen. To obtain a full-fledged wall, it is laid in a wooden frame and covered with plasterboard. If a more economical gluing method is chosen, then such a surface should, if possible, be protected from mechanical influences. For this purpose, it is covered with a layer of plaster or furniture can be arranged so as to limit the possibility of access (especially by children) to the wall. It’s also not a good idea to hang heavy decorative items or paintings on polystyrene foam. It is possible to remove the old finishing coating from the surface of the foam plastic only by damaging the smooth plane of the slab, so the insulation itself will have to be changed. Another disadvantage of directly wallpapering polystyrene foam boards is the fire hazard of this material.
Roll insulation. They're called . Due to their small thickness (up to 2 cm), foamed polymers are not subject to residual deformation when compressed, but transfer the entire mechanical load to the load-bearing wall. As a last resort, the damaged fragment should simply be cut out and a new piece glued on.
Cork. A natural material, which, depending on the thickness, is produced in the form of rolls or individual slabs. If the budget for the repairs allows, then there are no questions about such home insulation under wallpaper. The technical characteristics of this material are acceptable in all respects in any living room.
Warm wallpaper. In this case, the heat-insulating layer is already applied to the finishing material sheet. The multilayer structure includes oilcloth, foil, and spunbond (covering material). The difficulty will lie not so much in the weight of the sheet, which needs to be carefully glued into place, but also in the ability to satisfy your aesthetic needs with the offered range of patterns and colors. You can glue any type of wallpaper you like onto a roll of insulating material mounted separately under the wallpaper.

The photo shows how to glue insulation under the wallpaper if you have to work with:

The thinnest, most durable, non-flammable heat-insulating materials for wall mounting are produced in a practical roll version. They can be covered on 2 sides with paper or have a foil layer to reflect infrared radiation. The paper adheres more firmly to the adhesive composition, and the foil provides an additional reinforcing effect.

Types of thin insulation

You should select roll insulation for walls under wallpaper for your apartment based on the technical characteristics of the material and the price rationality (sufficiency) of the chosen option.

For example, considering the physical and mechanical properties that penofol has, it is clear that the lower the ability to absorb water, the higher the requirements for moisture content in the material of the walls of the house - when gluing, sufficient adhesion may not occur (there is nowhere for moisture to be absorbed). The delamination resistance of the material is also not standardized for all brands (see table):

Ignorance of these nuances can lead to a decrease in the quality of installation work or unnecessary damage to expensive insulation.

Manufacturers use 2 main materials as polymer heat insulators:

expanded polystyrene;
polyethylene foam.

The polystyrene foam backing for wallpaper retains all the advantages known from the use of this material as a filler in plasters or slab versions. You need to glue the sheets to the wall using high-quality glue with high adhesion for dense materials. These properties are enhanced by adding finishing gypsum putty to the adhesive composition.

The polystyrene foam backing comes in one layer or pasted on one side with a sheet of paper for better adhesion to the base of the wallpaper.

Foamed polyethylene foam as a substrate is superior to polystyrene foam in many technical characteristics, which is why today it is the most popular type of insulation for wallpapering.

A sample of a roll version made of polyethylene foam - ecohit insulation - is shown in the photo:

The foam base is covered on both sides with paper, which allows you to confidently stick it to the wall and adhere well to both light paper sheets and heavy vinyl wallpaper for painting.

Polyph

One of the easiest insulating materials to install is considered to be polyf, which is made in roll form from polyethylene foam.

On one side, facing the outer wall, no additional coating is applied to the polypom. The front side of the material is covered with durable, high-density paper.

This surface makes it possible to glue wallpaper of any weight to the insulation already on the vertical base.

Thermal insulation with a density of 30 kg/m³ is available in standard rolls with the following dimensions:

length 14 m;
width 0.5m;
thickness 0.5 cm.

The thermal conductivity coefficient of polyform is 0.03 W/μ (12 cm of brickwork, 5 cm of wood). It can be successfully installed under siding and other cladding.

The joints of the canvases are sealed with tape to obtain a solid plane.

Full information on how to insulate walls inside a house using polyfoam is shown in this video:

Polyfoam is a soundproofing component in the construction of walls. Its noise reduction index is about 30 dB, equally successfully coping with shock vibrations and sounds coming through the air.

Cork

Cork insulation is the only completely natural insulation that can be used for direct wallpapering.

Technical characteristics of the plug:

thermal conductivity coefficient 0.04 W/μ;
density 100 - 130 kg/m³;
flammability class G3 (fast-extinguishing);
weight - 200 kg/m³.

For the insulating layer of the substrate on the wall under the wallpaper, as a rule, cork sheets 10 mm thick are taken.

The type of cork products for wall mounting is shown in the photo:

The main advantage of natural cork substrate over synthetic polymers is that it does not release toxic substances when exposed to an open flame or high temperatures.

The unique feature of the material is its honeycomb structure. Due to the fact that each cm³ of wood contains up to 40,000,000 cells filled with a gaseous mixture, cork materials demonstrate excellent thermal insulation characteristics and do not allow moisture and gaseous volatiles to pass through.

Do-it-yourself insulation for wallpapering

The materials can be used as a reliable heat insulator, and together they have several functions, which are distributed as follows:

energy saving;
soundproofing;
preventing the formation of moisture condensation on the finishing surface and, accordingly, the appearance of mold;
leveling (the foam layer elastically fits unevenness and hides minor differences);
repeated use (the guarantee for some types of such insulation is up to 50 years).

Practical and reliable insulation for wallpaper

An example of a material that combines the listed functions in its characteristics is a polyph with a heat-reflecting layer (photo):

Despite the ease of installation, which is carried out using an adhesive composition, such wall insulation also has an acceptable price in comparison with the economic effect obtained during the period of its operation.

Types of insulation

Depending on the size of the room and the degree of heat loss in winter, several types of heat insulators can be used to insulate the walls of a house from the inside, differing in the installation method and layer thickness. They are divided as follows:

Warm plaster. Dry building composition in the form of a plaster mixture with special fillers (perlite, vermiculite, foam glass, sawdust, fibers). Plastering work requires a lot of time and significant labor costs. The solution is applied in a layer up to 5 cm thick and will require a leveling procedure with gypsum or acrylic putty. It is quite suitable for insulating new walls that have not yet been plastered. The disadvantages of warm plaster include its high water absorption capacity. This means that she herself needs reliable protection from water vapor.
Plate materials. Insulation sheets are produced mainly from foamed polystyrene. Based on the cost of such materials, foam plastic is most often used for work inside the room. The thickness of the sheet varies from 2 to 10 cm, but usually no more than 5 cm is chosen. To obtain a full-fledged wall, it is laid in a wooden frame and covered with plasterboard. If a more economical gluing method is chosen, then such a surface should, if possible, be protected from mechanical influences. For this purpose, it is covered with a layer of plaster or furniture can be arranged so as to limit the possibility of access (especially by children) to the wall. It’s also not a good idea to hang heavy decorative items or paintings on polystyrene foam. It is possible to remove the old finishing coating from the surface of the foam plastic only by damaging the smooth plane of the slab, so the insulation itself will have to be changed. Another disadvantage of directly wallpapering polystyrene foam boards is the fire hazard of this material.
Roll insulation. They are called wallpaper backing. Due to their small thickness (up to 2 cm), foamed polymers are not subject to residual deformation when compressed, but transfer the entire mechanical load to the load-bearing wall. As a last resort, the damaged fragment should simply be cut out and a new piece glued on.
Cork. A natural material, which, depending on the thickness, is produced in the form of rolls or individual slabs. If the budget for the repairs allows, then there are no questions about such home insulation under wallpaper. The technical characteristics of this material are acceptable in all respects in any living room.
Warm wallpaper. In this case, the heat-insulating layer is already applied to the finishing material sheet. The multilayer structure includes oilcloth, foil, and spunbond (covering material). The difficulty will lie not so much in the weight of the sheet, which needs to be carefully glued into place, but also in the ability to satisfy your aesthetic needs with the offered range of patterns and colors. You can glue any type of wallpaper you like onto a roll of insulating material mounted separately under the wallpaper.

Installation of slabs with glue

The photo shows how to glue insulation under the wallpaper if you have to work with foam plastic:

The thinnest, most durable, non-flammable heat-insulating materials for wall mounting are produced in a practical roll version. They can be covered on 2 sides with paper or have a foil layer to reflect infrared radiation. The paper adheres more firmly to the adhesive composition, and the foil provides an additional reinforcing effect.

Types of thin insulation

You should select roll insulation for walls under wallpaper for your apartment based on the technical characteristics of the material and the price rationality (sufficiency) of the chosen option.

Ignorance of these nuances can lead to a decrease in the quality of installation work or unnecessary damage to expensive insulation.

Manufacturers use 2 main materials as polymer heat insulators:

expanded polystyrene;
polyethylene foam.

The polystyrene foam backing comes in one layer or pasted on one side with a sheet of paper for better adhesion to the base of the wallpaper.

Foamed polyethylene foam as a substrate is superior to polystyrene foam in many technical characteristics, which is why today it is the most popular type of insulation for wallpapering.

Easy to install eco hit

A sample of a roll version made of polyethylene foam - ecohit insulation - is shown in the photo:

The foam base is covered on both sides with paper, which allows you to confidently stick it to the wall and adhere well to both light paper sheets and heavy vinyl wallpaper for painting.

Polyph

One of the easiest insulating materials to install is considered to be polyf, which is made in roll form from polyethylene foam.

On one side, facing the outer wall, no additional coating is applied to the polypom. The front side of the material is covered with durable, high-density paper.

This surface makes it possible to glue wallpaper of any weight to the insulation already on the vertical base.

Thermal insulation with a density of 30 kg/m³ is available in standard rolls with the following dimensions:

length 14 m;
width 0.5m;
thickness 0.5 cm.

The thermal conductivity coefficient of polyform is 0.03 W/μ (12 cm of brickwork, 5 cm of wood). It can be successfully installed under siding and other cladding.

The joints of the canvases are sealed with tape to obtain a solid plane.

Full information on how to insulate walls inside a house using polyfoam is shown in this video:

Polyfoam is a soundproofing component in the construction of walls. Its noise reduction index is about 30 dB, equally successfully coping with shock vibrations and sounds coming through the air.

Cork

Cork insulation is the only completely natural insulation that can be used for direct wallpapering.

Technical characteristics of the plug:

thermal conductivity coefficient 0.04 W/μ;
density 100 - 130 kg/m³;
flammability class G3 (fast-extinguishing);
weight – 200 kg/m³.

Rolls of different thicknesses

For the insulating layer of the substrate on the wall under the wallpaper, as a rule, cork sheets 10 mm thick are taken.

The type of cork products for wall mounting is shown in the photo:

The main advantage of natural cork substrate over synthetic polymers is that it does not release toxic substances when exposed to an open flame or high temperatures.

Insulation under wallpaper for walls is a fairly new material, and most developers are almost unfamiliar with it. But I can tell you with all responsibility that this material will allow even an inexperienced person to efficiently insulate the base under the wallpaper with minimal time and effort. I will go over the workflow in great detail, and all you have to do is repeat all the steps to achieve a result that will be no worse than the professionals.

In the photo: this is the option we will consider in our review.

Workflow Description

To begin with, I’ll tell you about Polyfom insulation - the material is foamed polyethylene with a closed cell structure, which does not allow moisture to pass through and has good thermal insulation properties.

The thickness of the material is 5 mm, the outer sides are covered with special paper, so that after finishing the work you have a completely ready base for wallpapering.

This structure makes this material an ideal base for wallpaper.

The walls in an apartment, especially when it comes to panel houses, do not have high thermal insulation properties, so an additional layer of insulation is a prerequisite for high-quality repairs. In addition, Polifom has good soundproofing characteristics, which is also important. Let's figure out how to properly organize the workflow.

Step 1 - preliminary activities

Do-it-yourself wall preparation work begins long before gluing the insulation to the surface. Moreover, preliminary work will take much more time and effort than the main stage, but without it it is unlikely to achieve an excellent result. Therefore, I recommend following all the tips as carefully as possible so that each stage of the process is done in the best possible way.

First of all, you need to prepare all the required materials, their list is as follows:

Polyph	Naturally, you cannot do without this material; it is usually sold in rolls 50 cm wide and 14 meters long, but there may be other parameters; the price per square meter is about 180-200 rubles. It must be purchased with a reserve, since during the work, waste will inevitably be generated that cannot be used. Based on experience, I can say that a margin of 10% is quite enough if you do not have non-standard walls
Adhesive composition	To glue it with Polyf, we need glue, there is no need to look for some specialized option, the usual composition for heavy wallpaper will be enough. Its quantity depends on the area to be pasted and is calculated individually in each specific case.
Primer	The surface of the walls must be primed, otherwise your work will take twice as much glue, and in the end it will turn out that in some places the material has come off due to poor adhesion. Most often, deep penetration formulations are used, which are sold both in finished form and in the form of concentrates, which simplifies their transportation.
putty	The composition is necessary for preparing the walls; in all my time I have only once encountered a perfectly flat base, but it was specially prepared before the previous gluing of the walls. The amount of putty depends on the degree of unevenness, so it is unlikely that it will be possible to determine the exact amount

Universal adhesive compositions are also suitable for Polyfom

Now let’s figure out which tool is useful for doing the work; everything here is also quite simple:

For measurements, it is best to use a tape measure, and to control the plane, the ideal option would be a building level. For marking, it is good to have a construction pencil on hand; pens and other objects are not very suitable for this process;
The material is cut using a wallpaper or construction knife. It can be purchased at any hardware store; you also need to stock up on additional blades, since when used they tend to lose their sharpness or break;
For putty you need a container in which the composition will be mixed, as well as a wide and narrow spatula, with their help the mixture will be distributed over the surface and leveled. It is best to mix the putty with a drill or hammer drill with a special attachment called a mixer;

Some people find it more convenient to work with a trowel, but for inexperienced developers a spatula is still better

The primer is most often applied using a paintbrush or a long-haired roller. It all depends on the area to be applied; if there is a lot of work, then it is better to purchase a roller. Don’t forget to equip it with a special telescopic extension handle so that you can stand on the floor to process the entire wall from bottom to top, this will save you from having to carry chairs or a table;

The telescopic painting extension will significantly simplify the work process

Smoothing of the canvas is done using a special spatula, which allows you to quickly expel air bubbles and press the material to the surface. There are different configurations of the tool; when choosing, pay attention to the working part; it should be quite flexible so as not to damage the coating when smoothing.

The spatula allows you to smooth out the material much faster

Now let's figure out what needs to be done in preparation for work:

First of all, you need to take measurements of all the walls to calculate the surface area. This will allow you to accurately calculate the required amount of thermal insulation material and adhesive composition for it. Everything is simple here: the height and width are measured and the area of the openings that are in the room is taken away;

Write down all measurement results; memory may fail if there are a large number of numbers.

Then you need to check the plane using a level; it is important to figure out how smooth the surface is and how much putty work remains. Sometimes the condition of the walls is so deplorable that you have to re-plaster them, but we will not consider this option, since this is the topic of a separate review;
Before starting work, you need to free up space; if there is nowhere to take furniture and other objects, then move them to the middle and cover them with special polyethylene to avoid dust settling. It is best to work on a wide table, but, in extreme cases, you can do it on the floor, then you need to thoroughly wash a separate area of the required size.

Step 2 - surface preparation

Insulation of walls from the inside followed by wallpapering begins with preparatory measures aimed at leveling and strengthening the surface. The instructions for carrying out the work are as follows:

General workflow diagram for wall preparation

First of all, you need to remove old wallpaper or other coverings that were on the wall. If there are areas on the surface where the plaster does not hold very well or a booming sound is heard when tapping, then the coating should also be removed, it is important that subsequently there is no situation where individual areas begin to fall off;
If there are large cracks, significant unevenness and other similar defects on the wall, then the easiest way to repair them is with cement plaster or a cement-sand mortar prepared by yourself. Remember that such mixtures take a very long time to dry, so this work must be done in advance;
Next, putty is applied, if the walls are plastered, then the easiest way is to tighten the entire surface, if the base is generally flat, then you can putty individual areas. The work is very simple, the main thing is to carry it out carefully so that it does not turn out that instead of leveling, you have made several more irregularities that will need to be eliminated;

Leveling the surface - the process is not as complicated as it seems at first glance

After this, it is necessary to level the surface using sandpaper with P120 grain.. For convenience, the abrasive material is attached to a special block, but, in extreme cases, you can also use a piece of board to which the sandpaper is attached using ordinary pushpins. The work is quite simple, you need to eliminate all visible flaws and achieve a more or less even plane;

When sanding, a lot of dust is generated, so a respirator will not hurt

The primer for walls inside an apartment under wallpaper should penetrate deeply into the base and clog all small pores in order to reduce glue consumption and improve the adhesion of the composition. It is best to use acrylic-based compositions; read the instructions carefully before applying, as you may have a concentrate, or you may have a composition completely ready for use. Its application is carried out in one stage, making sure that there are no uncovered areas left on the surface.

The extension cord will help you quickly prime walls without climbing onto high places

The soil dries within a couple of hours, but if the humidity in the room is above average or the temperature is below 15 degrees, then it is better to wait about 6 hours.

Step 3 - gluing the insulation

The gluing technology is quite simple; you do not need special devices or extensive experience in this field to work. The workflow looks like this:

IN First of all, measurements are taken and the insulation is cut into pieces of the required length. At the same time, leave small gaps at the top and bottom, this will simplify the work process, and these places will still be covered later with a plinth. The material is 5 mm thick, so it is not very flexible, it is better for it to be positioned without interference; trimming it while gluing is not the best option;
Next, glue is prepared, the usual composition used for walls inside the house for wallpaper is suitable, the main thing is that it is intended for heavy materials. As an option, I can recommend using PVA glue; it also holds the material well and is especially well suited for rooms with high humidity; its advantage is that it is sold ready-made;

Any adhesive for heavy coatings is also suitable for Polyfom

Glue is applied to the surface of the prepared material using a paintbrush., so you can evenly distribute the composition; in extreme cases, a wide brush will do. Most often, after application you need to wait some time, all information is indicated on the packaging with the glue, so read it carefully before gluing;

The composition must be applied to the entire area, there should be no uncovered areas.

You can apply the composition to 2-3 canvases at once, while you do this, the required time will pass, and you will be able to glue several elements in a row at once, this significantly speeds up the work process.

Gluing Polyfom is done quite quickly and easily, this is due to the fact that the material is thick and therefore does not bulge or bend when pressed against the wall. The most important thing is to expel all air bubbles from under the insulation, for this you use a spatula, which you need to work in the direction from the middle of the canvas to the sides, the material unfolds gradually as it is glued or is pressed in its entirety if you are working with an assistant;

The working process is simple, just paste 1-2 sheets to fill your hand

Penof is glued end-to-end; it is important to align the ends as best as possible, which is very simple due to the large thickness of the material. Cutouts are made at the location of switches and junction boxes, try not to make them too large;
Drying of the glue can last from a day to four, it all depends on the composition used and the microclimate in the room. After this, the joints can be taped with masking tape for additional reliability.

After finishing the work, you get a completely flat base.

Wallpaper for walls for insulation can be anything; the base is excellent for all types of coatings and can withstand even the highest loads.

Conclusion

Rolled insulation under wallpaper is an excellent solution for any house or apartment; it is important to prepare the walls well and glue the material well. The video in this article will tell you additional information on the topic, and if anything is unclear to you, then write your questions in the comments below.

If you want to express gratitude, add a clarification or objection, or ask the author something - add a comment or say thank you!

Often in panel high-rise buildings the question of the need to insulate the apartment arises. This is especially true for corner apartments, in which three out of four walls are in contact with the external environment. Such walls quickly freeze and create certain problems in the form of dampness and mold in the apartment. Therefore, sometimes the only correct solution is to insulate the apartment internally.

Advantages and disadvantages of internal insulation
Basic requirements for insulation materials
Internal wall insulation with penoplex
Internal wall insulation with liquid insulation
Polyfom - a new word in insulation

Advantages and disadvantages of internal insulation

Internal wall insulation has a number of advantages and disadvantages. Let's start with the negative aspects of external insulation:

A layer of insulation laid on the inside of the wall steals space in the room, making it smaller.
When temperatures change from the outside of the wall to its inside surface, a so-called “dew point” is created, which, with internal insulation, can end up inside the insulation or between the insulation and the wall, which will entail the accumulation of condensation there and the development of mold colonies.
A wall insulated inside is not capable of accumulating heat, and therefore its level of heat loss is up to 15%.
If the basic rules for insulating an internal wall are violated, the entire wall will freeze, which over time will cause destructive processes in its thickness.

Of course, internal insulation has a lot of disadvantages, but they are covered by a number of advantages. For example, it is possible to do internal insulation with your own hands, but with external insulation you will need to hire outside workers, which will entail considerable expenses.

Those. internal insulation will allow you to save not only on materials, but also on work.

Basic requirements for insulation materials

Insulation for walls inside an apartment must meet certain safety requirements, the compliance of which will determine the health and well-being of household members.

These requirements include:

environmental friendliness;
non-flammability;
minimum coefficient of hygroscopicity and vapor permeability;
high adhesion properties.

In other words, thermal insulation should not release toxic substances into the environment, should not support combustion, should not absorb moisture and steam, and should also adhere well to the wall surface.

From the above, we can conclude that the usual mineral wool, cork and warm plaster cannot be used as a thermal insulation material for internal insulation. What materials should you use then? Let's talk about this further.

Internal wall insulation with penoplex

Penoplex is a modern relative of polystyrene foam, but has better thermal insulation characteristics. Compared to polystyrene foam, penoplex has a 1.5 times greater thermal insulation coefficient, which allows it to be used in sheets of smaller thickness.

Penoplex practically does not allow moisture and steam to pass through, and is also non-toxic, i.e. fully meets all the above requirements for internal insulation. In addition, this insulation is affordable.

Penoplex sheets are mounted to the wall using special glue, and the seams between the sheets are carefully sealed.

Internal wall insulation with liquid insulation

The modern building materials market has recently introduced a new type of insulation - liquid. In another way it is called “warm paint” or insulating paint.

This composition consists of microparticles suspended in an acrylic base, made of ceramic or polymer. The percentage of microparticles in the paint is up to 80%.
Thermal paint is applied to the wall using a brush, roller or spray gun. To improve the quality of thermal insulation, the wall is painted layer by layer, allowing each layer to dry.

The resulting coating has a high degree of adhesion and low coefficients of hydro- and vapor permeability.
The main advantage of this type of insulation is the absence of seams, as well as gaps between the insulation and the wall, and the insulation and wallpaper. This eliminates the possibility of the formation of “cold bridges”.

Polyfom - a new word in insulation

Polyfom is an insulation material made on the basis of polyethylene foam, a material with a system of closed pores, which provides a high degree of thermal insulation. This insulation is produced in rolls and has a sheet thickness of only 5 mm with a relative density of 30 kg/m3.

Polyethylene foam is covered on top with a thick layer of paper, which allows you to paste even heavy types of wallpaper over the insulation. However, in the building materials market, polypom occupies the position of insulating substrates for wallpaper.

The wallpaper underlay can reduce noise levels and improve thermal insulation.

Soundproofing underlay improves indoor living conditions by reducing noise levels in rooms.

From the text you will learn how to choose and how to glue the backing for the wallpaper.

Purpose of the base

Wallpaper bases have been used for a long time. About 30 years ago, old newspapers were used for this, and then they were replaced by special paper.

Modern bases for wallpaper are high-tech materials that can not only facilitate the process of wallpapering walls, but also perform the functions of insulation and sound insulation.

Wallpaper backing is a wall covering with insulating qualities.

Typically, wallpaper backings are made of polyethylene foam, lined with paper sheets on the back and front sides.

Instead of polyethylene foam, cork or non-woven fabric can be used to make the backing. The backings can be glued under any type of wallpaper.

This finishing material has the following advantages:

high strength - it is difficult to tear;
environmental safety;
prevents condensation;
serves as sound insulation.

The backing for the wallpaper is a soft roll finish, but despite this, it is highly durable.

There are reviews of the wallpaper backing that say it can withstand several re-pastings of wallpaper. The new ones are simply glued onto the old backing without removing it from the wall.

The material prevents the appearance of mold on the walls and ensures silence in the room. In addition, using a wallpaper backing, you can even out unevenness on the walls.

Professionals increasingly advise sticking wallpaper not on bare walls, but on substrates, since the level of sound insulation in modern apartments leaves much to be desired.

Despite the fact that wallpaper backings are a universal material with many advantages, they also have disadvantages:

not suitable for wet areas;
not suitable for thin wallpaper - in this case the backing may show through;
will not be able to isolate the room from extraneous sounds at high noise levels.

Installation of the substrate

How to glue the backing to the wall:

the surface is freed from wallpaper;
remove water-based paint or whitewash;
the recesses are leveled with putty or alabaster;
The wall is primed with PVA glue
24 hours before sticking, the backing is cut and allowed to rest on a flat surface.

When working with a non-woven backing, glue is applied not to it, but to the walls.

Tip: immediately remove excess glue from the joints with a napkin.

Pasting begins from the window and moves in a circle. At the junction of two walls, the sheets must be end-to-end - pasting the corner with one sheet with a bend is not allowed.

During gluing, the sheets are coated on one side, left for up to 10 minutes and glued end to end.

To glue the backing, use polystyrene foam glue or an adhesive composition for massive wallpaper. The substrate is glued in the same way as in the butt method.

Air accumulations are removed by ironing the glued sheet with a plastic spatula or a piece of dry, clean cloth. The seams are sealed with adhesive masking tape.

The sound insulation must hang on the wall for at least a day before the wallpaper itself can be applied to it.

When glued to the wall, the backing does not deteriorate for decades. Materials from leading manufacturers are guaranteed for 50 years!

The soundproofing and insulating effect of covering walls with wallpaper will be especially noticeable in rooms where one of the walls faces the entrance.

The concrete walls of panel houses have poor thermal insulation, and through the walls facing the cold entrance, the apartment loses a lot of heat.

Important: the material cannot be glued if the room temperature is below 10 o C and the humidity is below 70%. In such conditions, the sheets will not be able to stick with sufficient strength.

After pasting the walls, drafts must not be allowed to appear in the room during the day.

Key manufacturers of finishing materials in Russia and the CIS countries produce substrates under the following brands:

Ecohit - produced by the Izhevsk Plastics Plant, removes cold radiation from walls, reduces noise levels. Ecohit does not absorb moisture and is not afraid of dampness;
Poliform - protects walls from condensation, improves sound insulation, reduces heating costs. Poliform is odorless, as it is made without freon and butane. The material does not crack when the foundation of a new house shrinks, is not damaged by mold fungi and bacteria, and does not collapse for 50 years;
Penolon - insulation 7 mm thick. The closed porous structure makes it durable and warm. Finishing on both sides with paper allows you to stick foam rubber on any wall. It can be used for internal insulation of houses made of timber, concrete, brick, and cinder blocks.

The listed manufacturers produce the material in rolls 0.5 m wide and 14 m long.

Tips for gluing:

Do not use the substrate in rooms with humid air;
walls damaged by fungus are cleaned with antifungal chemicals before pasting;
If after pasting there are gaps, then they are sealed with narrow strips of paper using PVA glue.

The soundproofing effect of the backing sticker will not protect the room from strong noise - in this case, other, more effective methods of sound insulation will be required.

The material is environmentally friendly and can be used in bedrooms and children's rooms.

The polyethylene foam backing is easy to cut, and the paper backing makes it easy to stick to the wall.

Despite its small thickness, the material helps save heat - the total effect of its use throughout the heating season can be quite significant.

Types of wallpaper substrates

Substrates can be made of the following materials.

Polyethylene foam - in the retail chain this material can be sold under the name polyfom or isolon.

All these names belong to the same material - foamy, lightweight, capable of withstanding extremely high and low temperatures (from -60 o C to +90 o C).

Thermal insulation specialists claim that foamed polyethylene in its thermal insulation qualities replaces a half-brick wall.

Polyethylene foam is used to insulate walls made of materials with low thermal insulation ability.

For example, concrete freezes quickly at sub-zero temperatures, and foamed polyethylene glued to the inside will retain heat and increase the comfort of being in the room.

The cork covering is eco-friendly and natural. It not only retains heat, but also has high sound insulation.

Cork backing is used in recording studios, that is, where it is especially important that no extraneous sounds penetrate from outside.

In a room whose walls are covered with cork under the wallpaper, you will not be disturbed by the barking of a neighbor's dog, crying children, playing musical instruments, street noise and other unpleasant acoustics.

As an insulation material, cork is inferior to foamed polyethylene, but only slightly. The weak point of the roll plug is the complete lack of water protection.

The material easily absorbs moisture, so in case of flooding it will definitely come off. Cork is sold in sheets, since it is too stiff and hard to roll into a roll.

Thermal insulating non-woven backing for wallpaper or repair non-woven material has appeared on the finishing materials market recently, but has already caught the fancy of professionals.

Unlike polyethylene and cork, repair non-woven fabric has an important feature - it is vapor permeable, so it can be used in rooms with high air humidity.

In addition, the material has increased elasticity and is excellent for leveling walls.

Repair non-woven fabric can be used to decorate any living room; it is 100% environmentally safe.

The disadvantage of this material is its high price - repair interlining is more expensive than foamed polyethylene and even cork.

The role of a substrate for wallpaper can be played by hard materials: drywall or plywood. Their disadvantages include more complex installation than that of roll materials and a reduction in the volume of the room.

The layer of air remaining between the sheets and the wall surface serves as a thermal insulation cushion, but it does not protect against sound.

In addition, cold and warm air meet in such a gap, which means condensation forms, which leads to mold and rotting of wood and paper finishing materials.

Before starting work, you need to read the instructions. Products from different manufacturers may differ in the gluing method.

Some types of underlayment need to sit on the floor to level out. Other materials do not need this, since according to the technology, before gluing, they are supposed to be soaked in glue, after which they will become heavier and level out on their own.