Properly selected insulation for walls under wallpaper significantly improves the microclimate in the room. Let's look at which type to choose for each specific case.

In the last century, old newspapers acted as insulation under wallpaper. Several layers of newspaper served as some thermal insulation and at the same time leveled the surface of the wall. The gluing technology differed in the duration of the operations - after all, each layer had to dry.

The main purpose of thermal insulation applied from the inside of the walls of a house under wallpaper is to insulate the wall. In addition, the coating performs the following functions:

• improvement of the indoor microclimate, temperature increases by an average of 1-2 o C;
• preventing water condensation on the surface of the wallpaper, which causes mold and mildew to appear;
• reduction of space heating costs;
• additional leveling of walls before wallpapering;

Thermal insulation under wallpaper does not require the use of complex technologies or expensive equipment; the owner of the house can easily do all the work with his own hands. Installation of roll or cork insulation is similar to the process of wallpapering itself.

Types of insulation

To insulate walls under wallpaper, three main types of materials are used:

• roll insulation made of foil foam plastic;
• cork mats (or rolls);
• plaster.

Each material has its own advantages and disadvantages, and their characteristics differ slightly.

Plaster mortar

Conventional plaster based on sand, cement and water can only level the wall. It does not have heat-insulating properties. In order for the usual material to become insulation, various substances that have the ability to retain heat are added as a filler, in addition to sand.

The cheapest will be small sawdust. However, this is not the best solution for two reasons:

• the thermal insulation properties of sawdust are low;
• sawdust absorbs water vapor, and mold can grow deep in the coating.

Plaster mortar with the addition of glass microgranules, the so-called “foam glass,” is widely used. The granules retain heat well; the solution is applied in a layer of up to 5 cm, which allows you to hide significant surface irregularities underneath.

Foam glass - an insulation option for walls under wallpaper

Compositions with expanded polystyrene granules are also used. They not only retain heat, but also have excellent sound insulation properties. There is only one disadvantage of foamed plastics - when burned, they release harmful substances.

Another group of fillers is vermiculite and perlite. These substances are of mineral origin and have high thermal insulation characteristics. The disadvantage is that it is hygroscopic; you will have to resort to additional waterproofing measures.

For all materials - fillers, there is one general limitation for independent use - plastering work requires certain qualifications and proven work skills. Carelessly applied plaster can simply collapse along with the wallpaper; if the layer is thick, it can cause injury to people nearby.

The surface of the wall after plastering with a composition with granular filler will not be smooth enough for wallpapering, so it will have to be additionally primed.

This type of insulation should be chosen by those who are confident in their abilities and have experience in plastering wall surfaces.

Cork insulation

Cork insulation occupies a special, elite position among other materials. Cork has excellent thermal insulation and sound insulation properties; it can mask minor wall irregularities.

Cork is environmentally friendly, does not absorb moisture and does not emit toxic substances when heated.

There is perhaps only one drawback to cork: it is very expensive. A special adhesive composition for working with cork is also expensive; ordinary wallpaper glue will not be able to withstand dense and heavy sheets.

Cork is supplied in both sheets and rolls. It makes more sense to use rolls for well-leveled surfaces. Separate sheets - for walls of complex configuration, with architectural projections and niches. The thermal insulation properties of both forms of release are identical.

Roll insulation

A thin layer of foil or impregnated paper is applied to the layer of foamed plastic in such insulation. Foil reflects heat back into the room, and paper adheres better to the wall surface. Special materials are produced, covered with paper on both sides - they are easiest to glue to the wall, and wallpaper can be glued directly to the inner paper layer.

The most common type of roll insulation for plastered walls is Polyfom. It is made of polyethylene foam and has excellent thermal insulation and sound insulation properties. Through an external wall covered with such material, street noise is practically inaudible. In terms of price, it is one of the most affordable.

Politom - a variant of insulation for walls under wallpaper

The disadvantages of Polyfom include the following factors:

• flammable, releases toxic substances when heated to high temperatures;
• requires careful leveling and grinding of the surface, transfers all the unevenness of the underlying surface;
• The gluing composition dries for at least three days.

Available in rolls 0, 5 and 1.2 meters wide, 2-5 mm thick. Laminated paper is produced on both sides.

Expanded polystyrene, known by the common name polystyrene foam, is also available in thin sheets for wallpapering walls. The granules in it are slightly larger than in the filler for warm plaster. It has average thermal insulation properties and is one of the cheapest materials. Its disadvantages are the following:

• flammable, releases toxic substances when heated to high temperatures;
• poor adhesion to wallpaper, it is better to buy tiles covered on one side with paper in the factory;
• low strength; if the wallpaper is hit by a heavy object, it may become deformed and the wallpaper will rupture.

Special mention should be made of such roll material as wallpaper with an insulating layer. It simultaneously serves as both insulation and finishing. A layer of foil or non-woven material like thin interlining or spunbond is used as an insulating layer. The undoubted advantage of such insulation is the great time savings - both operations are performed in one sticker. The disadvantages of insulated wallpaper include:

• reduced strength;
• small variety of colors and textures.

Often such wallpaper is purchased white with the expectation of subsequent painting.

Criterias of choice

How to choose the best material for internal insulation of a room? Experts do not give a definite answer. When selecting insulation, you need to consider the following parameters

1. Labor costs for preparatory operations and in the sticker process itself. If this factor is decisive, roll materials laminated with a paper layer on both sides win.
2. Vapor permeability. The only truly breathable materials that remove moisture are plaster and pressed cork. All others do not allow moisture to pass through. If the application technology is followed, mold and mildew will not form under the coating. In rooms with high humidity, you should not use insulation that absorbs moisture.
3. Eco-friendly and allergenic. The only material that does not cause irritation to allergy sufferers is cork. It is also the most environmentally friendly, as it is made entirely from natural materials.
4. The owner has construction skills. For those without practical experience in plastering work, it is better not to take on warm plaster and make do with roll materials.

And finally, cost is a fairly important factor. Here it is necessary to take into account the cost of not only the heat insulator itself, but also adhesives, primers, etc. For a number of insulation materials, such as cork, they are quite high.

Advantages and disadvantages

Insulation under wallpaper plays an important role in the thermal insulation of an apartment or house.

The undeniable advantages of thermal insulation of walls are as follows:

• creating a comfortable microclimate in the room, the outer wall stops working as a refrigerator;
• preventing moisture condensation on a cold wall, the occurrence of mold and mildew, making the room unsuitable for permanent residence;
• significant savings on heating.

The technology also has some disadvantages:

• extension of finishing time;
• additional costs, for a number of materials, are very significant;
• Some insulation materials have a low density; wallpaper becomes vulnerable to damage from hard objects.

Overall, the advantages outweigh the disadvantages. Insulation under wallpaper, especially for exterior walls, is becoming a common element of interior decoration projects.

Nuances of the wall insulation process

The quality of wall insulation, the strength and durability of the coating directly depend on the careful adherence to the application technology and the accuracy of the work.

Material selection

When choosing a material, the above factors must be taken into account. In addition, some materials, such as cork, are supplied in both slabs and rolls. It makes sense to choose rolls if the wall surface is well leveled. It is better to use the slabs on a wall that is not level enough, especially one that has many architectural elements in the form of columns, ledges, and niches.

Surface preparation

This is a very important stage. Carelessness or haste during the preparation of the wall surface will inevitably affect the quality of installation of the coating.

Remnants of old wallpaper or paint, all protrusions, mortar deposits, nails, and other fasteners should be removed from the wall. If it is necessary to apply a layer of leveling solution or primer, you need to wait until it dries completely.

Under foamed polyethylene, which clearly conveys all the unevenness of the wall, it will have to be sanded with fine-grained sandpaper.

Attaching insulation

The insulation materials for walls inside an apartment under wallpaper differ greatly from each other, but the technology for their installation is similar. The most significant difference is in the composition of the adhesive solution, which has the best adhesion to this particular heat insulator. The time it takes for the glue to dry completely varies greatly.

For most adhesive compositions, the following climatic conditions of use exist:

• temperature not lower than 10 o C;
• humidity not higher than 70%.

The prepared and leveled surface must be primed. Sometimes this is done with the main glue, diluted twice the working consistency. However, it is better to use special primers. The soil will increase adhesion to the main adhesive composition and reduce the moisture permeability of the wall material. Be sure to wait for the primer to dry completely.

It is better to cut the heat insulation rolls the day before gluing, and lay them out on the floor, one on top of the other. This will give the material time to rest and straighten out. When cutting, it is better to leave a small allowance.

The glue should be diluted exactly in the proportion indicated on the package. Attempts to save a penny can lead to the insulation falling off along with the wallpaper. The glue is evenly applied to the wall and to the insulation and left for several minutes so that it has time to be absorbed.

The stripes are glued in the same way as wallpaper is glued. The canvases are glued end-to-end and carefully smoothed with a rubber roller. Everything should be expelled, even the smallest air bubbles. Excess glue is removed with a rag or foam sponge.

After the glue has dried, the joints of the thermal insulation are taped with masking tape and proceed to wallpapering.

Insulation for walls under wallpaper creates cozy and comfortable living conditions in the room. If all the nuances of gluing technology are observed, it will last for decades.

The use of insulation under wallpaper for walls inside an apartment, especially in winter, can be called the most optimal insulation option. This material is completely simple to implement and, compared to other methods of maintaining heat in a room, is quite economical. Thanks to the insulation under the wallpaper, the area of ​​the room will remain the same, which speaks of one of its advantages.

Insulation for walls inside an apartment under wallpaper should be chosen without compromising the parameters of the room. Or rather, without the use of complex structures. There are a lot of options for insulation materials that will reduce heat loss and will not be harmful to health.

First, let's look at one of the main insulation materials for walls under wallpaper - heat-insulating plaster. It is presented on the market in different forms, which depend on the constituent filler, which determines the sound and heat insulation qualities of the plaster, flammability and other characteristics.

Types of heat-insulating plaster:

• Plaster with polystyrene foam. It has excellent noise and heat insulation, but the main disadvantage is its high flammability.
• Plaster with sawdust. Average in the price category and has the least efficiency. It is not recommended to insulate unheated areas of a house or apartment.
• Plaster with foam glass. The material has non-toxic, non-flammable, water-permeable qualities, but in terms of thermal insulation properties it is inferior to insulation with expanded polystyrene.
• Plaster with vermiculite or perlite. Mineral-based fillers are highly environmentally friendly, biological and chemical stability, fire resistance, and low thermal conductivity. The downside is the rapid absorption of moisture, which requires a vapor barrier.

The second of the main insulation materials for walls is roll insulation, made from different materials. The advantage of such canvases includes repeated gluing of wallpaper on them.

Types of roll insulation:

• Rolled polystyrene foam. It has the same qualities as plaster with the same filler.
• Polyethylene foam insulation Polyfom. An excellent heat insulator, it is a kind of wallpaper with insulation inside, because the material is duplicated with paper on both sides.
• Cork insulation. An environmentally friendly material used in finishing wet rooms.

The described materials are not only applicable for heat, steam and sound insulation, but can also serve in leveling walls. They, of course, will not hide major flaws, but they will hide minor irregularities perfectly.

Insulation under wallpaper (video)

Warm wallpaper for walls: features of choice

Warm wallpaper for walls is a new type of decorative finishing materials. All traditional wallpapers carry with them decor and comfort, and thermal insulating wallpaper can also reduce the thermal conductivity of the walls in the room.

Thanks to this type of wallpaper, heat is retained due to a special substrate on which the main material with a certain image rests. The installation of these coverings is practically no different from the installation of conventional wallpaper. But there are still requirements, which are primarily aimed at choosing the adhesive and the base surface on which the installation will be carried out.

Characteristics of the thermal insulation substrate:

• The ability to level small reliefs on the surface of walls;
• Application will reduce the thermal conductivity of the surface being glued;
• Prevention of mold formation due to the presence of antiseptic additives;
• Reducing the noise level emitted indoors from outside.

To achieve maximum efficiency in application, it is necessary that the internal wall covering is duplicated by the external thermal insulation finish. This is the only way to protect the surface from condensation or freezing.

Insulating a room with heat-insulating wallpaper requires a complete integrated approach to finishing work, namely, you need to take care of the external thermal insulation of walls and sealing of windows and doors.

Is it possible to glue wallpaper onto penoplex and how to do it

Is it possible to glue wallpaper onto penoplex? – many people ask this question during finishing work. Of course you can, like most building materials. To do this, it is necessary to prepare a base that will ensure adhesion and rigidity.

Preparing the base for wallpapering on penoplex:

• Purchasing wallpaper glue, strictly without substances that destroy penoplex;
• Preparation of old newspapers, which will be needed when gluing wallpaper to penoplex;
• Apply a layer of glue to clean polystyrene foam and stick on old newspapers;
• When completely dry, glue the wallpaper.

Now let's look at the next question: “How to hang wallpaper on penoplex?” First of all, when preparing penoplex for wallpaper, you need to use tips on how to properly insulate interior walls. This will not take much time and money.

Options for wallpapering on penoplex:

• Fix vertical guides on top of the heat-insulating structure, followed by installation of gypsum fiber sheets.
• Create a full-fledged reinforcing layer on top of the thermal insulation system, followed by finishing.

When insulating the interior of the room, it is necessary to seal the pre-prepared penoplex with a vapor barrier film and then proceed to further work.

This design will reduce the total volume of the room, but when using slabs measuring from 20 to 30 mm, such losses will be minimized. In the second option, which uses a plaster mesh, special glue for penoplex, and applying putty in several layers, the work seems longer and more complex. But the result is worth going through such a process of work.

Wallpaper in warm colors in the interior of your home

Wallpaper in warm colors truly evokes a feeling of coziness, warmth and light. Such shades create a welcoming atmosphere, forming wonderful contrasts among themselves, emphasizing the original taste of the owners of the house. Let's look at how to properly decorate warm colors in the interior below.

Selection of warm colors in the interior:

• Red color.This shade will fill the room with special strength and energy, giving the environment a feeling of warmth and comfort. The scarlet color in the interior is suitable for the creative part of the room, encouraging active actions and even arousing appetite. Therefore, when decorating the interior of a kitchen space, it is advisable to do it in warm scarlet tones.
• Orange color.An excellent analogue of red. Does a great job of attracting everyone's attention, giving a feeling of energy and movement, but without any pressure or authority. Many people use orange tones as an accent in the interior or paint the walls in the bedroom or living room with it. If we consider the bedroom option, then the shade there should be much softer, closer to peach.
• Yellow.One of the most popular warm shades. It creates feelings of pleasure and joy, filling the room with warm sunlight. The interior of the living room is often decorated in yellow tones, thereby emphasizing the friendliness and desire to give guests a joyful mood.
• Green color.Having a large number of shades, green creates the same effect of calm and solitude with nature. It is better to use this color in those rooms where you would like to retire from the whole world and bustle.

Wallpaper in warm colors in the interior of an apartment (video)

In conclusion, it must be said that a thermal insulating backing for wallpaper will create a cozy atmosphere and comfortable temperature in your home or a separate room. The cost of this method of insulation and the time it takes to complete the work is much less compared to standard options with constructing a frame and filling it with traditional thermal insulation material.

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 properties.

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 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 the apartment loses a lot of heat through the walls facing the cold entrance.

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, and 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, as 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 rolled 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.

Before starting, the question may always arise about the backing for the wallpaper, if they are chosen as the covering. Despite a lot of modern technologies, the finishing does not heat up, which means you will need insulation under the wallpaper, which will make the room much warmer.

Photo of heat insulator for interior decoration

Substrate and insulation

Interestingly, a material that can be used as a heat insulator is suitable not only for its main function.

Let's determine its directions of use:

• Insulation of walls in the apartment. Moreover, we are talking about the fact that the walls are insulated from the inside under the wallpaper.
• Incredibly high sound insulation rates; the material can be used specifically as a sound insulator.
• It prevents moisture from appearing on the wall, which eliminates the spread of fungus.
• Helps level walls or even ceilings if plastering work could not do this adequately.

In addition, the backing is quickly and easily glued and its installation does not require any special or professional knowledge; even if you have never glued anything to the surface, the work will not confuse you.

Separately, it must be said that the price of thermal insulation will always be acceptable, and this is also a kind of plus for this type of finishing.

The material is simple, inexpensive and easy to work with.

Important! When carrying out repairs, you can also use the old substrate, such a long service life for this material. At least some manufacturers guarantee that it can be used for at least fifty years!

Advantages

Modern roll insulation for walls under wallpaper has a number of undeniable advantages.

Let's denote the main ones:

• Easy to apply to a solid surface with heavy wallpaper adhesive. At the same time, it has high resistance to condensation formation.
• Excellent heat retention in rooms adjacent to unheated spaces, for example, with a landing.
• As already mentioned, it shows excellent sound insulation, but also noise absorption. That is, you will not be heard or noises behind the walls.

Let's take, for example, the modern roll substrate "Polifom".

It comes in the following options:

• The length of the material per roll is 14 meters.
• Width – 0.5 meters.
• Thickness 5 mm.

Important! The instructions for using this material allow you to stick wallpaper on it not just once, but many times, which instantly increases its functionality.

The material is made only from environmentally friendly components, which exclude the presence of freon or butane. In addition, the material does not have any foreign odor, so it is ideal for interior finishing work.

Working moments

In addition to the technical characteristics and capabilities, wall insulation for wallpaper has its own operating points, about which it is also necessary to say a few words:

• To paste the material, there is no need to hire workers; everything can be done easily and quickly yourself. The same rule works here as when wallpapering - everything is joint to joint.
• If, with a simple pasting of walls, it is necessary to plaster, seal cracks and unevenness, then with a rolled heat insulator you can safely skip these steps, the material easily hides all surface defects and acts as a primer, topcoat and plaster at the same time.
• Plus, the underlayment is always extremely useful in the fight against dark spots on the walls that show through the finish, and is simple mold, which is impossible to deal with once it appears.

Preparation

Installing insulation does not seem difficult and you can carry out the entire process easily with your own hands.

Let's go through the main steps that precede the final gluing:

• So. Old wallpaper, paints and varnishes. If the plaster is not durable, then the finishing layer is also removed.
• Obvious defects on the surface are filled with dry mixture or cement mortar. As mentioned above, insulating walls under wallpaper hides many flaws, but if the cracks are deep enough, they still need to be repaired.

As for the adhesive composition, you need to choose an adhesive that is suitable for sticking heavy wallpaper.

Installation

The roll is unwound and cut into separate pieces of length equal to the height of the walls. The glue is applied directly to the material. The adhesive should be absorbed normally into the material, and after 5-10 minutes you can begin installation.

Before you insulate the walls in your apartment under wallpaper, you will need a set of simple tools, which will include:

• Brush for applying glue.
• Assembly knife.
• Scotch.
• Sponge

It is good to additionally glue the insulation material at the joints with masking tape. After applying the backing, you can ventilate the room, this will allow the wallpaper with insulation to dry faster.

Conclusion

If it is impossible to insulate the walls externally, roll insulation under wallpaper can be an excellent alternative, a high-quality and modern replacement for facade heat insulation (

To preserve heat indoors and increase the sound insulation of walls, use roll insulation for wallpaper.

Eat several types this building material. They are based on foamed polyethylene or a balsa wood backing.

Like every insulation, roll insulators have advantages and disadvantages, their own characteristics and application features. There are also a number positive general properties things to consider when choosing insulation for wallpaper:

• high-quality and relatively inexpensive insulation of the room from the inside, allows you to save thermal energy and raise the temperature by 2-3°C;
• simple preparatory work;
• easy installation of building material on the walls, which allows you to do all the work yourself;
• soundproofing and noise-absorbing properties;
• long service life and the possibility of gluing new wallpaper after removing old ones.

Main technical characteristics of roll insulation

A worthy representative of the group of insulation for wallpaper made of foamed polyethylene is roll insulation Polifom.

Manufacturer - Hungarian company Polifoam Ltd Co, which has an ISO 9001 certificate, indicating the reliability of the supplier in the market and the compliance of its products with the requirements of the standards.

Insulation under wallpaper It is produced using technology that increases the material’s resistance to chemicals, sudden temperature changes and ultraviolet rays.

On both sides foamed polyethylene laminated thick white paper, when pasted onto which the wallpaper does not change its gamma and tone. The connection of these layers in the insulation is very strong, it cannot be destroyed, even if you try to break it with Polyf.

Due to the fact that the manufacturer has met all requirements on environmental safety, it is allowed to use this roll insulation not only in residential buildings, but also for insulating industrial premises.

A standard roll of polyethylene foam has a length of 14 m and a width of 0.5 m, with a material thickness of 4 mm to 8 mm, as well as specifications:

1. The thermal conductivity of Polyfom is 0.037 W/m·K, which corresponds to the value of half a brick masonry.
2. Resistance to deformation is based on the fact that the elastic modulus of the material is 0.5 MPa at a pressure of 2000 N/m 2.
3. The temperature range at which this insulation is used for wallpaper is from -60 to + 90°C.
4. This building material does not have a chemical reaction to cement and concrete, various construction adhesives, and acetone. It is neutral towards many chemicals.
5. Not susceptible to infection by fungi and various types of mold. Not attractive to rodents and insects.
6. Reduces impact noise by 22 dB.
7. Does not emit harmful or toxic volatile substances.
8. It has a long service life (up to 50 years), without changing technical characteristics.

Attention! The disadvantages of roll insulation made of foamed polyethylene include poor fire resistance. According to the classification, they have a G2 flammability, that is, they can quickly ignite.

Unlike insulation under wallpaper made of polyethylene cork insulation made from natural raw materials and has the following parameters:

• thermal conductivity coefficient of the material – 0.04 W/m K;
• density of the substance is 100-130 kg/m3;
• flammability class - G3 (material is normally flammable);
• The thickness of the cork layer in the insulation is 10 mm.

Rolled cork insulation environmentally friendly and completely safe for humans and pets.

At high humidity in the room it does not grow mold and is not a medium for spread all kinds of fungi. Durable.

It is allowed to use cork insulation in certain interiors for wall decoration, without additional wallpapering.

How to glue roll insulation under wallpaper?

When placing various insulation materials on the walls, construction work is carried out in stages, and have minor differences:

• Regardless of the type of roll insulation installed under the wallpaper, the old wallpaper is removed and the walls are cleaned of dust and dirt;
• the surface is leveled by applying plaster followed by a primer (for cork insulation, a deep penetration primer is used);
• sealing individual cracks and dents with a special composition made from a mixture of gypsum and chalk, which can be easily purchased at hardware stores or prepared independently;
• according to the manufacturers’ recommendations, glue is diluted that is suitable for a specific of the above insulation materials;
• cut the rolled material in accordance with the size of the room;
• when using Polyfom, the insulation itself is covered with glue;
• if cork material is used, then cover both it and the surface of the wall with glue, and then install it;
• Any roll insulation is always glued end-to-end.

Roll insulation under wallpaper greatly simplify repair and construction work on insulation and noise insulation of various types of premises. The price for these types of building materials is quite affordable. Separately, we can mention the relatively high cost of cork insulation, but their quality is unrivaled and therefore they are in high demand.