Thermal insulation under the wallpaper. Roll insulation for wallpaper - the best way to soundproof walls

For a long time, the walls of various rooms have been pasted over with roll-type coatings on a paper and polymer basis. But today a fundamentally new variety of decorative finishing materials has appeared on the market - heat-insulating wallpaper.

In this article we will talk about what are the advantages of this wallpaper in comparison with conventional coatings and what are the features of their gluing.

Combination of aesthetics and practicality

Cork backing - can be used as a decorative cover

All traditional wallpapers, with the exception of liquid and stretch modifications, perform a purely decorative function. That is, they are designed to make the room beautiful and, as a result, cozy. Currently, along with traditional materials, wallpaper is used that can reduce the thermal conductivity of the walls in your home.

The ability to retain heat is achieved through a special substrate, directly on which the main canvas is attached with one or another image or ornament. The installation of these coatings is not much different from. However, special requirements are placed on the surface of the substrate and on the composition of the adhesive on which the installation will be carried out.

Important: When choosing heat-insulating wallpaper for your house or apartment, you need to understand that heat saving provides for the need for integrated approach.
Special walls will provide effective heat saving in combination with high-quality heating, dense windows and doors.

Substrate characteristics

To make the walls less thermally conductive and save on heating the room, thermal insulation under the wallpaper will help you. The substrate is a thin layer of cork, foamed polyethylene or polystyrene. For greater adhesion, the material is made with one-sided or two-sided paper lamination.

On the market, thermal insulation is represented by the following trademarks: PenoHome NomaTherm and Polif. The price of 1 meter is from 100 to 150 meters. The coating is sold in rolls of 5–7 m.

The use of a synthetic thermal insulation substrate allows:

• reduce the thermal conductivity of the walls(the effect is comparable to the effect of using mineral wool or polystyrene foam 2 cm thick);
• even out small bumps on the walls;
• prevent mold formation due to the content of antiseptic additives;
• reduce the level of noise entering the room from the outside.

Important: For maximum efficiency of the application, the internal wall covering should be duplicated by an external heat-insulating finish.
This is the only way to save the outer walls from freezing and from the formation of condensate.

Features of the installation work

In the photo - rollers for rolling wallpaper in hard-to-reach places

Gluing thermal insulation wallpaper with your own hands is not as difficult as it might seem.

For finishing work, we need the following materials and tools:

• heat-insulating substrate (you can read about how to properly measure the coating for pasting walls in the corresponding article on our portal);
• glue for heavy wallpaper (on smooth walls it is advisable to use compositions such as PVA, Liquid Nails or Baguette Glue);
• shallow penetration soil for walls;
• leveling compounds in accordance with the type of wall surface;
• spatulas wide and narrow;
• trowel (trowel);
• roller for pressing the insulating sheet;
• wide flat brush;
• wide masking tape;
• tape measure, square and pencil.

Surface preparation

At the first stage, we prepare the surface of the walls. The main requirement for the base is strength and smoothness. Therefore, if the substrate is glued immediately after removing the old wallpaper, it is necessary to remove the adhesive residue, sand the surface and prime.

If the installation is carried out on raw cement plaster or on an uneven surface, first you will have to apply a primer layer, and after it has completely dried, apply putty.

Putty for walls is applied with a wide spatula, and smoothed out with a trowel. After the putty layer is completely dry, it must be sanded, dusted and covered with one or two layers of primer. You can proceed with the installation after the complete drying of the soil (on average 2-3 days).

Important: After preparation, it is advisable to cover the walls with special bactericidal agents that will prevent the appearance of mold.

Material preparation and gluing

In the photo - gluing a strip of thermal insulation to the base

At this stage, we measure the height of the walls and cut the substrate into strips of the required size. We lay the strips on the floor for several hours so that they straighten out under their own weight. Glue is applied to the inside of the strip, kept for the time specified in the manufacturer's instructions and glued to the wall.

Unlike traditional wallpaper, the substrate is thicker, and therefore air pockets can only be dispersed using a rubber roller. After the entire surface has been rolled with a roller, we glue the joints along the cut line with masking tape.

At the floor and ceiling, we cut the canvas with a knife under a wide spatula. We do not bend the substrate at the corners, but cut it so that the cut line runs along the corner line.

How to glue wallpaper on a substrate

To begin with, we note that if a heat-insulating coating is glued to the wall, then exceptionally dense wallpapers can be used on top of them, since paper thin coatings can eventually disperse at the joints.

Since thermal insulation is characterized by the presence of a laminated surface, wallpapering is carried out in the usual way using ordinary glue recommended by the manufacturer of these finishing materials.

Important: For maximum durability of the result obtained, the joint of the wallpaper and the joint of the substrate should not coincide.

Conclusion

Now you know what the instructions for sticking warm wallpaper are. Of course, such wall cladding will improve the energy efficiency of the room, but a significant effect can be achieved only with an integrated approach to finishing work.

When planning to insulate your home with warm wallpaper, take care of the external thermal insulation of the walls, as well as the sealing of windows and doors. If you have any questions that require clarification, watch the video in this article.

Do I need insulation under the wallpaper and what role does it play? The substrate (it is also a heater) is necessary if wallpaper without a thermal insulation function is used for decoration. An additional layer of material under them in this case will reduce heat loss in the room and not only.

Insulation under the wallpaper primarily plays the role of reliable thermal insulation for the wall, but its functionality is not limited to this.

A standard roll substrate, regardless of the type of material, allows:

• increase the level of thermal insulation inside the room;
• raise the level of sound insulation;
• prevent the formation of fungus and moisture;
• level the surface of not only the wall, but also the ceiling.

Mounting insulation under the wallpaper is easy. This does not require special tools, skills and experience. Acting according to a simple algorithm, it will be possible to insulate the walls with the maximum effect of thermal insulation.

The main advantages of the substrate as a heater for wallpaper include:

• simple installation using ordinary wallpaper glue;
• resistance to the formation of condensate on the surface of the wall;
• durability;
• affordable cost of materials and labor.

There are several wallpaper substrate options available on the market today, among which rolled models are the most popular. They, in turn, are presented in several modifications.

Polyfom - roll insulation No. 1

It is Polyf who first pops up in my head when it comes to insulation under wallpaper for insulating the internal walls of the house. The material is considered one of the easiest to use, sold in a convenient roll form, affordable. The basis of the product is foamed polyethylene foam.

The material is glued to the wall, while on the side in contact with the wall surface it does not have an additional layer, while on the outside it is covered with a special layer of thick paper. It is convenient to glue wallpaper of any type on a paper surface.

Rolled insulation is supplied in rolls 14 m long, 50 cm wide and only 5 mm thick. The density of Polyfoam is 30 kg/m3. With a minimum thickness, the roll insulation fully copes with the functionality assigned to it, having a minimum thermal conductivity of 0.03 W / mk, which corresponds to a thick brick wall or a wooden layer of 5 cm.

Compared to conventional wallpaper substrates, Polyfom has a number of advantages:

• the material increases the sound insulation of the walls, demonstrating a noise reduction index of 30 dB;
• differs in the structure of closed cells, due to which it is resistant to moisture and steam;
• demonstrates excellent resistance to mechanical damage, retaining its shape throughout the entire service life;
• has a minimum weight against the background of high elasticity, which simplifies the process of working with it during installation;
• safe;
• durable - according to the manufacturer, it serves up to 50 years, retaining its original functionality.

It has a roll insulation for the wall surface and a disadvantage. We are talking about the complete absence of such an important indicator as fire resistance, which, however, is characteristic of all materials based on foamed polymers.

How to mount Polyfom: workflow

It is easy to fix the insulation on the walls under the wallpaper, and even a person without experience will cope with the work. They start by measuring the indicators of the walls and preparing the roll for installation (cut pieces of the desired length in accordance with the height of the wall).

The next step should be to prepare the surface with the removal of the old finish layer, the elimination of cracks and potholes with putty.

A clean and even wall is primed with deep penetration compounds in order to reduce glue consumption in the future.

As soon as the primed walls dry, wallpaper glue is applied to the surface of the insulation and their surface, after which the prepared tapes are fixed, pressing tightly to the base of the wall.

It is important that during the work the temperature in the room is not lower than +10 degrees with a humidity of up to 70%. The joints of the insulation must be glued with adhesive tape, and then leave the material for final adhesion to the wall for 72 hours. Only after this period has elapsed can you proceed to wallpapering.

Features of cork insulation

Another type of roll substrate for wallpaper is cork material with a thermal conductivity coefficient of 0.04 W / mk, a density of 100-130 kg / m3, a flammability class of -G3, which is considered the absolute norm.

For wall insulation under wallpaper, a material with a thickness of 10 mm is usually used. Completely natural, the insulation does not pose a health hazard and demonstrates the following benefits:

• durable;
• environmentally friendly;
• not static;
• does not contribute to the appearance of microorganisms even in a damp room;
• increases the level of thermal insulation in the house;
• improves sound insulation;
• levels the surface of the walls.

The use of cork insulation inside an apartment or house allows you to normalize the optimal level of microclimate, regardless of the weather and season.

The disadvantage of the material is the high cost compared to the insulation described above, which fully explains its 100% naturalness.

Installing a cork substrate: what you need to know?

Insulations based on cork material are fixed to the walls, following the scheme:

They clean the surface of the old finish, remove dust, dirt, putty cracks, chips and bumps.

• Prime the cleaned surface.
• Cut strips of insulation in accordance with the parameters of the walls.
• Prepare the glue according to the instructions.
• With a roller or brush, lubricate the strips of insulation and the surface of the walls.
• Glue the substrate end-to-end, sealing the seams with glue.
• Trim off excess backing with scissors.

The glued substrate is left to dry for several days, after which wallpaper is glued on top using the same technology.

Another Alternative option insulation on the walls under the wallpaper - polystyrene foam substrate with characteristics similar to polystyrene foam material. It is sold in rolls, glued according to the same principle on wallpaper glue with the addition of gypsum-based plaster. To simplify the process and improve the result, the insulation is combined with a fiberglass mesh.

An important task to be solved in the process of repair work is reliable thermal insulation of the walls of an apartment or a private house. In order to maintain a comfortable temperature, protect against dampness, ensure reliable sound insulation, as well as plan the surface, a heater is used for wallpaper rolled, reviews of which confirm high efficiency. Pasting the walls with a heat insulator additionally contributes to increasing the service life of the finishing coating. Let us dwell on the varieties of thermal insulation materials, installation features and economic aspects.

Insulation for walls under wallpaper - possible options

For insulation of internal surfaces intended for wallpapering, various materials are used that have increased thermal insulation properties. Special substrates not only maintain a comfortable temperature in the room, but also perform a number of additional functions:

• hide defects and minor irregularities in the processed, insulated surfaces;
• reliably soundproof the living room, making it difficult for the penetration of extraneous noise;
• make it difficult for moisture to condense, which causes dampness and promotes the formation of mold.

Heat-shielding materials, which are the basis of finishing, can be conditionally classified as follows:

• roll thermal insulation;
• special substrate "Polyf";
• cork lining.

When deciding on the use of a particular heat insulator, the following factors must be considered:

• the cost of acquiring it;
• heat-shielding characteristics;
• the possibility of self-sticking.

Consider the performance characteristics and properties of the most common types of heat insulators used for finishing.

Insulation under the wallpaper roll

Offered in rolls, thermal insulation materials are a protective coating with a backing of thin polystyrene foam, which is easy to stick. As a carrier basis of polystyrene foam thermal protection is used:

• thin foil. The foil base effectively maintains the temperature in the room, reflecting heat;
• paper. It has increased adhesion and can be located on both sides of the polystyrene foam layer;
• cardboard. The material is securely bonded to the surface using standard adhesives.

Sticking polystyrene foam insulation is carried out with the following compositions:

• glue designed to fix heavy wallpaper;
• plaster mixture based on fine-grained gypsum;
• special types of building adhesive mixtures.

Sticking wallpaper on a polystyrene foam base is carried out using a special polymer-based cement adhesive.

Features of this type of substrate are:

• efficiency of thermal insulation;
• fastening reliability;
• resistance to high humidity;
• excellent noise protection;
• vibration absorption;
• prevention of mold formation.

Roll thermal insulation is easy to use and easily glued to the base on its own.

Thermal insulation under the wallpaper brand "Polyfom"

A heat insulator based on foamed polyethylene, known as "Polifom", is close in structure to heavy types of wallpaper. Consists of the following layers:

• a heat-insulating substrate made of polyethylene foam having a porous structure saturated with air bubbles;
• paper protection located on both sides of the heat insulator and facilitating the gluing of the insulation.

With a high-quality sticker, polyethylene foam (“Polyfom”), having a thickness of 5 mm, reliably hides irregularities and small protrusions on the surface.

Advantages of "Polyphoma":

• high coefficient of adhesion with various types grounds;
• ease of self-gluing to the walls;
• no need to use special adhesives;
• thermal conductivity coefficient, which is not more than 0.04 W / mK;
• the dimensions of material in a roll, convenient for performance of work, - 0,5х14 meters.

"Polyf" is glued to a previously prepared surface. After three days, after the final drying of the glue, you can perform wallpapering work.

Cork insulation under the wallpaper

If it is not possible to ensure the flatness of the walls, it is advisable to give preference to a substrate made of cork wood. It has a set of advantages:

• impeccable environmental friendliness;
• excellent thermal insulation;
• increased sound absorption;
• attractive appearance.

The original texture of the insulation allows it to be used as a decorative cladding for interior decoration.

Disadvantages of cork underlayment:

• susceptibility to moisture, which is easily eliminated by impregnation with moisture-repellent mixtures, including those based on wax;
• the need to use special adhesive mixtures. To facilitate fixation, the side of the material in contact with the wall is impregnated with a special compound;
• the presence of deep imprints on the front surface due to mechanical action or inaccurate gluing of the cork base.

The minimum area of ​​a roll with a cork base allows you to thermally insulate 5 square meters of the wall.

How to glue insulation on the walls with your own hands

The content of the article:

Insulation under the wallpaper is a special substrate designed to keep the heat in the room, leveling the walls, their heat and sound insulation, as well as protection against mold, fungus and condensation. The installation of such material largely solves the problem of durability of the finishing coating of structures. We will tell you about how to glue the insulation under the wallpaper on the walls in this article.

Features of thermal insulation of walls using a substrate for wallpaper

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

• Styrofoam 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 sticker on such a substrate is made using a special polymer cement adhesive. The best adhesion with wallpaper is polystyrene foam insulation with an outer layer made of cardboard. Wall insulation with this material is quite effective, since it is reliable, absorbs noise and vibration well, is resistant to moisture and mold, but its thermal insulation properties are somewhat lower than those of polyethylene substrates, which will be discussed later. The 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.
• PE foam backing. The foam material consists of soldered 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 whole complex of works. Such a substrate has excellent adhesion to any kind of surface. Today, this rolled material is the most popular option as a thin thermal insulation for walls. Polyf insulation under wallpaper is generally recognized. It goes on sale in rolls of 0.5x14 m, material thickness - 50 mm, density - 30 kg / m 3, thermal conductivity - 0.039 W / m * K, sound absorption - up to 22 dB, price of a Polyfom roll - 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 wallpapering. 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 the convenience of fixing on the walls, the back side of the cork backing is impregnated with glue. The material is sold in rolls from 5 m 2, the price of 1 m 2 is 400 rubles. and more.
• Substrate combined with wallpaper. This material is a wallpaper, on the back of which insulation is glued. 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 repeated wallpapering on its surface, and at the same time its characteristics remain unchanged. Substrates with a paper outer layer adhere tightly to the walls, and foil ones reflect heat well.

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

Advantages and disadvantages of insulation under wallpaper

Installing insulation for walls under wallpaper has a number of undoubted advantages. Let's name the main ones:

• Insulation holds heat well in rooms adjacent to unheated enclosed spaces, such as a stairwell.
• After the installation of such a coating, the sound insulation of the room increases, the noise behind the walls becomes inaudible.
• Insulation with a substrate under the wallpaper is an environmentally friendly insulation, since the material is designed specifically for work inside rooms and does not have extraneous odors and toxic emissions.
• If the surface of the walls has small flaws in the form of bumps, spots, chips, they can always be hidden under a soft and elastic wallpaper insulation. Its paper shell is guaranteed to protect the finish from stains, retain its color and pattern.
• The insulation is easily fixed on the surface with conventional glue for heavy wallpaper and actively resists the formation of condensate. The material is easy to cut, lightweight and has good adhesion to many surfaces.
• Due to the simple installation, the rolled insulation under the wallpaper can be glued on its own, without involving unauthorized persons or specialists.

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

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

Wall insulation technology for wallpaper

The process of installing a heat-insulating substrate is practically no different from the usual 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.

Preparation of the base for mounting the substrate

Before gluing roll insulation under the wallpaper, it is necessary to remove the old finish, peeling plaster, dirt, protruding nails, fittings and other unnecessary details from the walls. After cleaning, the identified cracks and potholes should be repaired with cement mortar, and the influx of mortar or concrete should be knocked down with a chisel.

Due to the fact that the insulating substrate under the wallpaper smoothes out minor flaws in the surface, it is not required to level it to an ideal state. But if the walls have differences 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 the adhesion between the wall and the thermal insulation substrate.

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

Preparation of materials for wall insulation for wallpaper

This stage of work consists in cutting the insulation under the wallpaper into canvases of the desired size and stirring the adhesive composition. When choosing glue, you should focus on the type of insulation substrate and its weight. The best option will 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 desired height on the wall, and then roll out the roll of thermal insulation and cut it into sheets of the appropriate length.

The required number of rolls for room insulation is calculated simply: you need to take the quotient of dividing the area of ​​\u200b\u200bthe walls of the room by the value of the area of ​​\u200b\u200bone rolled out roll of insulation. It is recommended to buy the material with a small margin of 5-10% in case it is trimmed at the junction of structures.

Before working with glue for insulation under wallpaper, you must study the instructions attached to it, in which the manufacturer indicates the method of applying the composition, its drying time and scope. It is recommended to use only a substance that is designed to work with a particular type of thermal insulation substrate. Before applying to the surface, the adhesive composition must be thoroughly mixed.

Instructions for installing the substrate under the wallpaper

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

The adhesive is applied with 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 holding 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 carried out vertically from top to bottom without gaps butt-to-butt. 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 on the wall, their joints must be glued with masking tape.

A day after the completion of thermal insulation, the room can be ventilated. Wallpaper sticker on the insulation should be done only after it has completely dried, the time of which is 2-5 days.

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

How to glue the substrate under the wallpaper - look at the video:

If the technology of gluing the insulation under the wallpaper is observed, up to 20% of thermal energy can be saved. Rolled heat insulator is much more effective than wall carpets. In addition, under the window sills of the apartment, warm wallpaper will save you from cold bridges for a long time and keep the comfort of your home.

Along with rising energy prices, the issue of thermal insulation of housing is becoming increasingly relevant. Manufacturers of building materials introduce new technologies and offer non-standard solutions. One of these methods is insulating wallpaper. The material can be used as a finishing wall covering or act as a substrate for decorative cladding.

Characteristics of polystyrene foam wallpaper: pros and cons

To date, wallpaper made of expanded polystyrene is used quite rarely. The innovative material is used as an insulating substrate for decorative wall decoration or as a topcoat with thermal insulation properties. The composition of the insulated wallpaper: polystyrene foam and a paper layer on the outside.

Characteristics of a roll heat insulator:

• density - 200-300 g / sq.m;
• web thickness - 3-10 mm;
• roll length - 10-15 m;
• width - 0.5-1 m.

The main advantages of styrofoam wallpaper:

1. thermal insulation ability. An important quality of the polystyrene foam substrate is the preservation of heat in the room. The effect of using a 6 mm thick insulation roll is comparable to using a 12.5 cm brick barrier.
2. Noise reduction. The level of sound impact from the street or neighbors is significantly reduced - depending on the thickness of the insulating substrate, the noise effect can be reduced within 21 dB.
3. Leveling effect. Preliminary wall cladding with thermal wallpaper will hide minor surface defects.
4. Environmental friendliness. The material does not contain freon, butane and does not emit harmful volatile components into the atmosphere during operation. An additional plus is non-susceptibility to rodents and insects.
5. Availability. Thermal insulation of walls with wallpaper will not be expensive, and the money spent will pay off with noticeable savings on heating.

The rolled insulation is easy to install, the expanded polystyrene sheets “lay” evenly on the walls and are easily joined together, forming a tear-resistant structure. However, this method of thermal insulation is not without its drawbacks.

Styrofoam wallpaper: photo

Cons of styrofoam wallpaper:

1. Possibility of condensate accumulation. As with any method of internal thermal insulation, a thermal wallpaper sticker shifts the dew point in the direction of the room. This causes condensation to accumulate between the insulation layer and the wall. To avoid freezing, it is desirable to provide additional external thermal insulation of the building and high-quality ventilation of the room.
2. Flammability. The expanded polystyrene substrate is combustible. However, the degree of flammability and smoke formation depends on quality composition material and the presence of flame retardant impregnation. Some manufacturers try to minimize the level of fire risk by releasing a self-extinguishing product.

The nuances of choosing a wall roll insulation

The construction market offers several types of thermal insulation substrate. The most in demand: polystyrene foam, polyethylene and cork materials.

Distinctive features of each type:

Cork insulation raises the temperature in the house by 2-3°C per winter period and helps keep the room cool in summer. Disadvantages of natural insulation: high cost and the need to use special glue.

It is permissible to repeatedly apply wallpaper on roll insulation while maintaining the declared properties of the heat insulator. Substrates with paper lamination hold well on the walls, foil products reflect heat better.

Advice. High-quality insulation - elastic, elastic and dense. Before buying, the substrate must be probed and assessed for rupture - if the material is easily torn, then it is not worth buying. Safe thermal wallpaper should not have a strong odor

When buying a substrate, you must consider the color of the decorative wallpaper. Under light colors, it is better to choose a white insulation - the optimal basis for wallpaper of any color.

Before choosing wallpaper from expanded polystyrene, it is necessary to evaluate the required degree of thermal insulation. Thermal wallpaper with a thickness of 3-5 mm is sufficient for finishing adjacent walls. Thicker material will provide better noise reduction and better insulation.

The technology of wall decoration with heat-insulating wallpaper

The order of installation of thermal wallpaper implies mandatory preparation, priming of the walls, the choice of a suitable adhesive composition and adherence to the method of gluing the insulation.

Necessary materials and inventory

To perform finishing work you will need:

• insulating underlay;
• glue - a composition designed to work with heavy wallpaper is suitable; when calculating the quantity, it must be taken into account that the glue will be applied twice - on the surface to be glued and on the wallpaper;
• putty for leveling the wall - the composition is selected in accordance with the type of base;
• deep penetration soil that prevents the appearance of mold;
• spatulas of different sizes;
• tape for finishing the joints of thermal wallpaper sheets;
• pressure roller with a low pile;
• construction knife;
• measuring instruments (tape measure, level);
• soft cloth;
• glue roller.

If you need to remove old wallpaper, you can use a sharp knife or scraper.

Surface preparation

Preparatory activities can be divided into several component stages.

Stage 1. Removing the old finish:

1. Moisten the surface and leave for 15-30 minutes.
2. Pry off the soaked wallpaper with a sharp tool and remove it from the wall.
3. If the measures taken were not effective, it is necessary to use a special wash.

Stage 2. Elimination of defects. Apply putty to the surface with a wide spatula, smooth with a trowel. After the layer has dried, the wall must be sanded and dust-free. Apply the primer evenly in one or two coats (depending on the porosity and friability of the substrate).

Follow-up actions should be started after two or three days, provided that the primer is completely dry. Optimal conditions for further work:

• temperature - from +10°С;
• humidity - within 70 °.

Bonding of the thermal underlay

Before proceeding with the installation of thermal wallpaper, they must be prepared:

1. Measure the height of the room.
2. Spread the insulation on the floor and mark the cut points. At the same time, it is necessary to leave a margin of 2 cm for the final trimming after gluing the wallpaper to the wall - under the ceiling and floor plinth. For the arrangement of acoustic and thermal insulation, the “wall-to-floor” laying method is used - the strips of the substrate are placed on the wall with an overlap of 15 cm. Subsequently, the finishing floor covering is mounted. This method reduces the likelihood of cold spots.
3. After cutting, leave the insulation sheets to lie down and straighten up under their own weight.

Pasting technology:

1. Mix the adhesive solution, observing the proportions recommended by the manufacturer.
2. Apply glue to the inner surface of the strip, leave for 5-15 minutes for impregnation (the exact period is indicated on the package of thermal insulation wallpaper).
3. Treat the wall, capturing an area wider than the size of the panel.
4. Attach the insulation to the wall, smooth it out with a soft roller or plastic spatula in the direction from top to bottom. Remove excess glue with a soft sponge.
5. Check the verticality of the first strip with a level - the rest of the elements will be placed along it.
6. The second canvas is joined closely with the first cut, avoiding the appearance of bumps.
7. The polystyrene foam substrate cannot be bent at the corners - the wallpaper is joined end-to-end. The gaps that appear must be filled with sealant.
8. Joint lines should be covered with adhesive tape or masking tape.

Finishing decorative finish

When choosing wallpaper to cover the insulated substrate, preference should be given to extremely dense options. Thin paper products will not work, as over time the joints may disperse.

Procedure:

1. Cut out the wallpaper with a margin for cutting.
2. According to the level or plumb line, “beat off” the vertical line - for an even location of the first strip.
3. Apply glue to the wallpaper and the wall.
4. Apply the first canvas to the surface, leveling it over the entire area and “expelling” the air.
5. Cut off excess wallpaper, aligning the top and bottom of the junction line with the wall and floor.

Overview of popular manufacturers

A wide range of thermal substrates indicates the demand for the material. Among consumers, foreign and domestic brands have proven themselves well: Thermo-Tab, Eco-Tap, Eco-Heat, Globex, Polyfom.

Thermo tab. Insulated wallpaper company "Izopan" (Ukraine) are produced with a thickness of 3 mm, 5 mm and 6 mm. The basis of the material is polystyrene. The material is neutral - does not undergo decomposition by microorganisms and does not emit harmful substances.

Thermo-Tab insulation is suitable for use in commercial and residential premises. Estimated cost - about $ 9 / roll 6 mm thick.

Eco tap. The heat-insulating substrate for wallpaper is available in 3 or 6 mm thickness. The basis of the material is expanded polystyrene. Eco-Tap basic features on 6mm:

• density - 20 kg/cu.m.;
• average thermal conductivity class - 0.06-0.115 W / m * s (1 mm of the substrate corresponds to 20 mm of brick, 10 mm of foam concrete or 40 mm of reinforced concrete wall);
• roll length - 10 m, width - 50 cm;
• estimated cost - 3.5 USD/roll.

In addition to manufacturers of expanded polystyrene wallpapers, polyethylene substrates are in demand:

1. Ecohit. Both sides of the polyethylene foam sheet are coated with white paper. The material is popular due to a number of undeniable advantages:
   • strong homogeneous structure;
   • versatility - applicable to wallpaper of any color;
   • increased level of moisture resistance;
   • neutrality to solvents;
   • the presence of antifungal impregnation;
   • thermal conductivity within 0.031-0.033 W / m * K;
   • almost zero vapor permeability;
   • it is possible to use conventional PVA glue for gluing;
   • service life - about 50 years.
2. Polyph. Representative of the ECO segment, produced with a thickness of 4-8 mm. The material is certified according to the integrated system ISO 9001. The main characteristics of a 5 mm thick web:
   • degree of thermal conductivity - 0.043 W / m * K;
   • weight of thermal wallpaper - 230 g / sq.m;
   • density - 30 kg / cubic meter;
   • combustibility category - G4 (highly flammable material);
   • the insulation reduces the cold radiation of the walls, prevents the appearance / spread of mold and does not absorb moisture.

An alternative solution to the "weeping walls" is gluing Penolon (analogous to Polyfoma). Wallpaper is resistant to alcohol, alkalis, gasoline and other aggressive substances. The chemically cross-linked polymer is characterized by minimal deformation and low thermal conductivity.

Of course, the interior wall cladding with the use of heat-insulating wallpaper will give the desired effect and increase the energy efficiency of the house. However, to achieve a more tangible result, it is necessary to act comprehensively and additionally insulate the building from the outside.

Wall decoration with expanded polystyrene wallpaper: video