Insulation of gas silicate blocks, how to insulate the walls of the house? Insulation of walls of a house from gas silicate blocks How to insulate gas silicate blocks.

How to insulate gas silicate blocks outside?

Recently, the construction industry has become popular use gas silicate blocks. It's pretty cheap, fast, and convenient. In this regard, we will consider why insulation is needed for buildings made of this material, how to properly insulate and what is the best way to insulate a house.

Warming reasons

As you know, gas silicate is a porous material that makes it warm. The thermal conductivity coefficient of aerated concrete (gas silicate) depends on the brand of this product (for more details in the table), but in general, the thermal conductivity of gas silicate blocks is very low and therefore, in theory, it does not imply insulation. But not everything is so simple.

Due to their structure, the blocks are very easily saturated with water. This leads to the appearance of microcracks. As a result, the service life and effectiveness of the material is significantly reduced. Thermal insulation of a house from gas silicate blocks from the outside solves this problem. Also, external insulation saves usable space inside the house.

Warming methods

So, how to insulate a house from gas silicate blocks? There are several ways:

In this case, the insulation is glued to the walls of the house. This method is quite easy to perform even by those who have little experience in the construction business.

This method implies a ventilated system and is more complicated than the previous method in execution.

Materials (edit)

How to insulate a house from gas silicate blocks? There are several materials that are used as insulation for gas silicate blocks:

Styrofoam;
mineral wool;
thermal panels.

Let's talk more about these materials.

Styrofoam

Polyfoam is one of the most common materials for facade insulation. Gas silicate walls are no exception. With its energy saving, it is also environmentally friendly and fireproof. Those who decided to insulate with foam also note that it is quite cheap and easy to install.

What kind of foam should you take for such work? It all depends on your material well-being, but a fairly experienced specialist will say that it is better to make a 100 mm foam layer.

An experienced specialist will tell you that it is better to make a 100 mm foam layer.

Since the method of insulation for foam is “ wet facade", The surface of the wall should be cleaned of debris and primed with a primer deep penetration... Experts advise repeating the priming procedure about five times.

Re-prime only when the previous layer is dry.

The next step is pasting the foam directly onto the gas silicate blocks. For this, a dry mixture of glue is used. In the instructions on the package of this substance you can find all the details you need to work with the adhesive.

Usually in country houses used gas silicate blocks of the D200 brand, so do not spare the foam glue and apply it all over the surface. Thus, the thermal insulation will fit snugly against the wall, which will have a beneficial effect on the insulation.

Foam sheets should be fixed from bottom to top and only when the bottom sheet is already firmly glued. Why? This will help prevent the leaf from slipping, disrupting the level. For additional strength, you can install an L-shaped profile at the bottom, adjusted to the level.

In addition, the foam plates should be fixed in the same way as brickwork is done, that is, with a shift of half a sheet. It will also increase the strength of the structure.

The gaps between the plates should be covered with glue or blown out with polyurethane foam. You can also do it a little differently. As mentioned above, it is advised to make a 100 mm foam layer. However, in order to achieve this, it is not necessary to buy slabs of this thickness. It will be enough plates of 50 mm, but glued in two layers so that the joints do not coincide. This will help you to suffer less with the blowing of the seams and the insulation of gas silicate will be of better quality. The downside is that this method will require a little more money.

When the glue has dried and set well, the foam is additionally fixed with plastic umbrella dowels. After that, a layer of glue is applied, into which the reinforcing mesh is embedded and then, after it dries, another layer of glue is applied.

The finishing touch is plastering and painting or decorative plaster... It all depends on your taste.

Mineral wool

Gas silicate is vapor-proof material, therefore, mineral wool, the steam permeability of which is a well-known fact, is suitable for insulation. It also does not burn and has sound insulating properties.

But there are also disadvantages. For example, cotton wool absorbs water and in case of any serious damage to the plaster layer or a crack, it loses its thermal insulation. Therefore, not all experts agree on whether it is possible to insulate facades with it.

We cannot say directly whether or not we can insulate our house in this way, but in any case, if you nevertheless decide to choose mineral wool as a heater, its algorithm of actions is similar to fixing foam.

To begin with, it is worth cleaning the walls from debris and dust by priming the surface of the walls from gas silicate block... And in this case, you should also not be limited to one time. Better to repeat it several times.

Installation of wool slabs is carried out in the same way as for foam. The first row is leveled and attached to the wall with glue and dowels, which are fixed at the joints and in the middle of the slab. The next row is also installed with a half-plate shift so that the seams do not coincide.

After installation, allow time for the insulation to stand and dry, and only after that work can be continued.

The next step is to apply it to the mineral wool. A mesh is attached to this glue, which is slightly recessed. You also need to overlap 1 cm at the junction of the mesh. After the glue is dry, apply another coat.

The finishing stage is, of course, plastering. At the same time, the house "breathes" as the plaster allows steam to pass through. However, as already mentioned, be careful, as damage to the plastered layer will adversely affect the thermal insulation.

Thermal panels

What are thermal panels? This is a system of insulation, moisture-resistant slabs and facing tiles. Typically, the insulation is foam or mineral wool. well and facing tiles allows you to do without putty.

In addition, the tile protects the gas silicate from mechanical damage and moisture, since it is usually made under a brick or stone. Thus, thermal panels combine beauty and reliability.

This type of insulation is referred to as a “ventilated facade”. Although some experts say that with such insulation, the wall "does not breathe", but ventilation holes under the canopy and in the basement of the building, this issue is easily solved.

How is insulation made with thermal panels? Below is the sequence of actions

Since thermal panels are heavier than polystyrene, the presence of an L-shaped bar under the starting row is mandatory. The plank is leveled and fixed with anchors in 200 mm increments.

For aerated concrete, special dowels are used, the edges of which, being in the block, expand under the influence of the mechanism. This is important, because without this they simply will not hold on.

After mounting the plank, it is worth proceeding to the next stage, namely the installation of the lathing. It usually consists of galvanized metal UD profiles or wooden beams... The profile is installed on the starting plate and vertically attached to the hangers parallel to the wall. The hangers are mounted with anchors at a distance of 500 mm.

Thus, we sheathe the entire perimeter of the house. On the corners and slopes we put two planks, as this is necessary for installation corner pieces thermal panels. At the level of the starting bar, below along the base, you need to install an ebb.

We close the space between the profiles with mineral wool or foam plates. However, do not forget about the ventilation gap of 20-30 mm. We attach thermal panels to the profile using self-tapping screws. As in the case of the foam plates, we mount the tiles with the same offset. Well, the tightness is ensured by the grooves for joining the panels.

After the end of the work, all the gaps are sealed with foam, and the screws and seams are overwritten.

Also, instead of thermal panels, you can use siding. The principle of its installation is the same as that of thermal panels. However, under the siding, in addition to insulation, a windproof membrane is pulled.

So, today we looked at how to insulate a house from gas silicate outside. We also learned how to insulate gas silicate blocks from the outside and what materials can be used for this. How to insulate the house is, of course, up to you, but we hope that this information will help in creating a cozy insulated house.

We wish you success in your endeavors!

uteplix.com

What is the best way to insulate gas silicate?

A house made of gas silicate blocks is considered one of the best in terms of thermal insulation. This is mainly due to the structure of the material, which is almost 90% air. The rest is a mixture of sand, cement, limestone and water using a specific technology. It is not always necessary to insulate a house made of aerated concrete due to the characteristics of the material, however, rather severe winter frosts prevail in the middle zone of our country.

They do not allow you to do without insulating a house from gas silicate blocks. This is a natural process. How to insulate a house from gas silicate outside will be discussed further.

How can you insulate gas silicate?

Thermal insulation of a house from gas silicate blocks involves the use of a wide variety of materials. Most often, however, two varieties are used - these are mineral wool and foam. It is worth talking about the advantages and disadvantages of both technologies in more detail.

When insulating a house from gas silicate blocks with your own hands using foam, do not forget about the ease of installing this material. It can be mounted with ease, and a wide variety of tools can be used to saw it. Some use an ordinary construction knife for these purposes, and some use a hacksaw.

It all depends on the desires and capabilities of the person. At the same time, foam also has a lot of disadvantages that make this technology less in demand. The fact is that the foam has low air permeability. In this case, the main material, namely gas silicate blocks, have a higher indicator of this characteristic.

As for mineral wool, it is more acceptable as a house insulation made of gas silicate blocks. It's simple perfect option, which today has received the widest distribution. Mineral wool perfectly permeates air and keeps it warm. This material is a little more difficult to mount, but the characteristics of the walls will always be at their best.

There are other materials that are widely used for these same purposes, but they are used much less often than those discussed above.

Tools and materials

So, now it's worth talking about what you may need to insulate a house from gas silicate blocks with your own hands. Here you will need to acquire the following:

insulating material, in this case we will talk about mineral wool;
dowels;
glue;
perforated corners;
container for diluting glue;
building level;
fiberglass mesh;
puncher;
putty knife.

Basically, this should be enough for the entire range of events.

Now you can go directly to the insulation of the house from gas silicate blocks. First you have to prepare carefully. The wall is cleaned of various dirt, dust, and all defects are eliminated on it. This is done in order to improve the adhesion of the mineral wool surface through the use of glue.

If there are large defects on the wall, then they also need to be eliminated. This is done using plaster and primer. Only thorough preparation of the surface will allow all the work to be carried out as efficiently as possible. At the level basement floor it is worth installing the frame.

He will serve additional support for insulation. Beacons should be placed at the corners of the house. This is followed by the direct process of fixing mineral wool to the wall. First, you need to spread the surface itself and the cotton wool with glue. This will improve the properties of the materials to be fastened. During installation, it is imperative to avoid the formation of cruciform joints.

Do not forget about the additional fastening of the material. For these purposes, special dowels are used. They are umbrellas. They should be placed along the perimeter of the mineral wool slab, and they can also be additionally mounted in the center.

It is worth noting the fact that mineral wool itself is soft material, which is worth further strengthening.

It is for these purposes that fiberglass mesh is used. Glue is preliminarily applied to the surface of the insulation, and then the fiberglass mesh itself is installed. An additional layer of glue is applied over the mesh.

After the process of reinforcing the insulation is completed, it is imperative to additionally insulate the corners of the building, door and window openings. This is done very simply. For these purposes, the same perforated corners that were purchased earlier are used.

chudoogorod.ru

Thermal insulation of a house from gas silicate

In the previous article, we talked about wall insulation with cardboard. Today we will focus on buildings made of foam concrete. One of the ways to preserve heat is to insulate the house from gas silicate blocks from the outside. Gas silicate blocks are distinguished by high heat transfer properties, therefore, you should immediately protect your home from heat loss. Below you can find the answer to the question: "How to insulate a house from gas silicate blocks?" Following the method of insulating a house from gas silicate blocks will help prevent mistakes in the process. After all, the decoration of walls made of gas silicate should be carried out taking into account such factors as climatic conditions, the thickness of the blocks and the specifics of construction. You also need to decide on the material for work.

Why is it necessary to insulate houses from gas silicate blocks?

External insulation is always better than internal insulation, since the dew point is shifted not into the wall, but into the insulation layer.

Before insulating gas silicate blocks, which are cellular concrete, you need to familiarize yourself with their characteristics. On construction market gas silicate has gained great popularity for its high performance properties. This material is durable, environmentally friendly, soundproof and economical. The savings are ensured by keeping warm. A building made of aerated concrete reduces heating costs by up to 40%.

But it is worth considering such a disadvantage as the ability to pass moisture. Gas silicate perfectly absorbs liquid due to its porous structure and masonry seams, therefore the wall should be protected. The solution to this problem will be the insulation of gas silicate outside.

Existing methods of insulation

Traditional materials to protect against moisture are:

extruded polystyrene foam;
mineral wool;
Styrofoam;
plaster mix.

If we talk about new products that have appeared relatively recently on the building materials market, then we should mention thermal panels. They differ not only in excellent protection against moisture, but also give great view building. True, the cost is higher than that of conventional heaters. To insulate a wall made of gas silicate blocks, you will need:

one of the above materials for thermal insulation;
glue;
container for diluting glue;
dowels;
drill;
level;
fiberglass mesh;
building level;
putty knife;
plaster;
primer;
puncher;
dye.

This is the main thing that you need to have before starting insulation. Then you need to do everything preparatory work which will provide high-quality result... To begin with, the wall is cleaned of dirt and dust. Is it necessary to insulate a house from gas silicate blocks without preliminary cleaning? It is not recommended, because thorough cleaning ensures adhesion of the adhesive to the wall insulation.

You can clean the wall with a spray bottle. This will ensure thorough dust removal. After cleaning, all visible irregularities and surface defects are eliminated. For this, plaster is used, and then a primer. A primer is applied with a brush, which will serve as an additional cleaning of debris. If the irregularities are left, then the insulation may be damaged.

If you decide to install hydrogen heating at home with your own hands, then you will need clear instructions for performing the work. Fortunately, we recently considered this topic and came to the conclusion that there is a benefit, and not small.

You will find the necessary information on how a hydrogen burner for heating works here.

The use of mineral wool for insulation

Mineral wool is glued to universal construction glue and additionally nailed with dowels.

Gas silicate, as a vapor-permeable material, it is advisable to insulate so that it also allows steam to pass through. Therefore, thermal insulation of gas silicate with mineral wool will extend the life of the walls and save you from additional problems with internal insulation... Indeed, with a vapor-tight external insulation in the house, it will be necessary to additionally equip ventilation. Mineral wool insulation provides additional sound insulation and an attractive appearance structure. In addition, mineral wool has non-flammable properties. This material is purchased in slabs.

Mineral wool insulation work consists of the following stages:

installation of mineral wool slabs;
then you should leave the insulation for the gas silicate blocks for a while, so that it will stand;
installation of reinforcing mesh;
a primer is applied;
plaster is applied;
painting is performed, but only after the plaster has dried.

Leave the gap between the plates no more than 5 mm, otherwise cracks will appear.

A level is used to lay the first row of slabs evenly. They are established according to the principle brickwork so that their seams do not match. They are attached to the wall with glue, which is used according to the instructions on the package. Then additional fixation with dowels is carried out: in the middle of the slab and at the joints. A layer of glue is applied to the mineral wool, in which the mesh is embedded. It is necessary to make an overlap of 1 cm. After drying, a second layer of glue is applied. Plaster is a vapor-permeable material, therefore its application does not block the passage of steam in mineral wool and gas silicate. At the same time, the house continues to breathe.

If there is an opportunity to do combined heating home, then don't miss it, it's worth it. Thanks to this, you will be able to heat your home with several types of energy, which is very convenient.

If we talk about the economic component of diesel heating, then the reviews say about the significant benefits from installing an oil boiler. You can find more details here.

How to use expanded polystyrene for insulating a house from gas silicate outside?

Styrofoam concrete blocks you can insulate, the thickness of the insulation should be calculated based on climatic zone.

Styrofoam is insulating material white, which is 98% air, enclosed in thin cells of expanded polystyrene. But is it possible to insulate gas silicate with expanded polystyrene? If you insulate the house correctly, then you can. Expanded polystyrene has good thermal insulation properties at minimum costs... Also read: “ Technological features insulation of facades with foam ".

This material is environmentally friendly, fireproof and durable. Also possesses high rates energy saving. The foam thickness of 3 cm corresponds to 5.5 cm of mineral wool.

For work, foam plates are used. Warming a house with this material is done as follows:

plates are mounted;
after they should be left to settle for a day;
are pulled together with dowels in the corners and in the middle;
reinforcing mesh is attached;
plaster is applied;
the insulation is being painted.

To avoid the glue drying out, it should only be applied to a part of the wall (for the bottom row of boards).

Styrofoam is laid with glue. For even laying, a level is used, and for adhesion to the wall, the slabs are slightly pressed. The seams of each row should not coincide; there is no need to leave a gap between the plates. This will ensure a secure adhesion. For high-quality reinforcement, first of all, the corners of the building are strengthened, and then the rest of the surface. You need to move from top to bottom. Subject to this technology and obtaining good result, the question of whether gas silicate can be insulated with foam no longer arises.

Thermal insulation using thermal panels

Thermal panels - aesthetics and thermal insulation in one bottle.

Thermal panels for insulating walls made of gas silicate blocks are a system of components such as insulation, tiles for cladding and a moisture-resistant board. Insulation can be in the form of expanded polystyrene or polyurethane foam. A moisture-resistant board is a structural layer, and facing plate allows you to avoid work at the final stages - putty and painting. Installation of thermal panels greatly facilitates the insulation process. Installation of thermal panels is carried out on the wall lathing, and not on the wall itself.

The lathing is made of galvanized steel and fixed to the wall using a screwdriver, hammer drill, self-tapping screws and dowels. The structure consists of L-shaped strips, suspensions, U-shaped profiles. After the installation is completed, a heater is placed in the frame made of profiles - expanded polystyrene or mineral wool. Then thermal panels are attached to the structural profiles.

How to insulate a gas silicate block bath?

Bath, as a room with high humidity, requires additional thermal insulation. But how to properly insulate a gas silicate block bath? It should be borne in mind that materials for warming the bath should not emit harmful substances at high temperatures... Before insulation, it is necessary to apply to the wall special impregnation... Suitable for a bath as an external insulation basalt insulation in the form of cotton wool, expanded polystyrene is also used. Also read: "Some aspects of floor insulation in the bath".

Regardless of the protective material, a ventilation gap must be left to dry the heat insulator.

Thermal insulation of a bath made of gas silicate blocks is carried out in stages:

protective material is attached;
the crate is mounted;
sheathing is stuffed (lining is used).

Such materials for insulating a house from the outside made of gas silicate, such as mineral wool or foam, are used equally often. But which one should you choose? Both heaters have their own advantages and disadvantages. If we compare them, then:

low cost of materials;
foam has good thermal insulation properties, and mineral wool has a higher coefficient of thermal conductivity;
the foam is more durable;
polystyrene has increased flammability, while the second option refers to non-flammable.

Both options are good in their own way, but what is the better to insulate gas silicate blocks? If we are talking about choosing a material for warming a bath, then it is better to focus on expanded polystyrene and its derivatives, because mineral wool absorbs more moisture due to a large temperature difference. The cost of both materials is quite reasonable. A higher price will be for insulation using thermal panels. But as a result, the house will have a whiter attractive appearance. The installation process of thermal panels can be seen in the video:

utepleniedoma.com

How to insulate a house from gas silicate blocks from the outside?

If you insulate the house from gas silicate blocks from the outside, then you can achieve a very good effect in terms of saving on heating the room. It is not a complicated and not too expensive process that will help you save good money on heating.

Gas silicate blocks: what are they?

Gas silicate blocks are one of the new building materials for the construction of walls. It is distinguished by high heat and sound insulation, lightness and large size... They also have a low price. But many companies inflate prices both for them and for their masonry, so always find out the prices in different sources, and, when hiring workers, the prices for masonry of gas silicate blocks. Such characteristics of gas silicate blocks make it possible to quickly erect energy-efficient buildings, but they are not distinguished by high strength.

Why insulate a house from gas silicate blocks from the outside?

Many people ask the question: "Why insulate such a house if it will be warm anyway?" The goal is not only to increase heat savings, but also to provide special protection for gas silicate blocks, which will significantly extend the life of your home.

Gas silicate blocks have low moisture resistance. They absorb it into themselves and, when frozen, can form microcracks, which reduce their efficiency and strength. On average, this material is rated for 200 freeze cycles. During the winter, with unstable weather, more than 20 such cycles can pass, which means that the walls will last you about 10 years. Insulating the outside using materials that absorb moisture helps to avoid these very processes, which will significantly extend the life of the house.

It is best to insulate such buildings in two layers. The first is an insulating material that is capable of absorbing moisture, and the second is an outer material that can withstand atmospheric influences.

As an insulating material the best option is the use of isover. Isover is a modernized glass wool, which consists of organic fibers, which, in turn, are capable of releasing and absorbing moisture in significant quantities. Its peculiarity is that moisture is retained strongly enough, so that adjacent surfaces remain practically dry.

Superintendent's advice: some suggest using foam as insulation. This option not bad, but not suitable for such buildings, since the foam does not absorb moisture, but, on the contrary, can lead to its accumulation, which will only contribute to the acceleration of the process of destruction of blocks ..

A wide variety of materials can act as a second layer, all that are suitable for outdoor use. These can be plastic panels, wood or special boards made from complex polymers. The choice is always up to the consumer. It all depends on the desire and financial ability.

One common option is to use plastic panels... They have a relatively low cost and look beautiful. There is a large number of colors, which allows you to decorate the outside of the house to the taste of any person.

Superintendent's tip: You can save money on exterior cladding, but in no case should you save on isover, because the effect of insulation and protection of your walls will depend on it.

The insulation process is as follows:

Creation of a frame outside the house - a frame is made to fix the insulation and plastic panels.
Strengthening the insulation in the frame - it is fixed so that it fits snugly against the wall of the house and does not have cracks and gaps. Thus, the ingress of moisture on the wall is almost completely eliminated and the amount of condensate that forms on the walls during temperature drops is minimized.
Sewing the frame with an outer material - is carried out so that there are no holes and gaps, which provides additional protection and simply provides a beautiful view.

Some materials for the top layer of insulation require additional finishing... Accordingly, you will need to choose the type exterior decoration to complete.

How much will insulation at home save?

If a house made of gas silicate blocks is 20-25% more economical than ordinary houses, then a house whose walls are insulated from the outside gives savings of up to 40%.

Such a house with insulation will help you to reduce heating costs by almost 2 times, which is a pretty good indicator today.

How much does such house insulation cost?

The cost of home insulation will depend on the choice of materials. When choosing materials, it is worth comparing materials in terms of efficiency in terms of thermal insulation, comparing prices in various stores and on the Internet, because the price of different suppliers can vary up to 20%.

No matter how much it costs you to insulate your home, these are all small things compared to how much this home improvement will help you save.

Gas silicate blocks: what are they?

Gas silicate blocks are one of the new building materials for the construction of walls. It is distinguished by high heat and sound insulation, lightness and large size. They also have a low price. But many companies inflate prices both for them and for their masonry, so always find out the prices in different sources, and, when hiring workers, the prices for masonry of gas silicate blocks. These allow you to quickly build energy-efficient buildings, but they are not very durable.

Why insulate a house from gas silicate blocks from the outside?

How to insulate a house from gas silicate blocks from the outside?

As an insulating material, the best option is to use isover. Isover is a modernized glass wool, which consists of organic fibers, which, in turn, are capable of releasing and absorbing moisture in significant quantities. Its peculiarity is that moisture is retained strongly enough, so that adjacent surfaces remain practically dry.

Superintendent's advice: some suggest using polystyrene as insulation. This option is not bad, but it is not suitable for such buildings, since the foam does not absorb moisture, but, on the contrary, can lead to its accumulation, which will only contribute to the acceleration of the process of destruction of blocks.

One common option is to use plastic panels. They have a relatively low cost and look beautiful. There are a large number of colors, which allows you to decorate the outside of the house to the taste of any person.

Superintendent's advice: You can save money on external cladding, but in no case should you save on isover, because the effect of insulation and protection of your walls will depend on it.

The insulation process is as follows:

Creation of a frame outside the house - a frame is made to fix the insulation and plastic panels.
Strengthening the insulation in the frame - it is fixed so that it fits snugly against the wall of the house and does not have cracks and gaps. Thus, the ingress of moisture on the wall is almost completely eliminated and the amount of condensate that forms on the walls during temperature drops is minimized.
Sewing the frame with an outer material - is carried out so that there are no holes and gaps, which provides additional protection and simply provides a beautiful view.

Some materials for the top layer of insulation require additional finishing. Accordingly, you will need to choose the type of exterior finish to complete.

How much will insulation at home save?

If a house made of gas silicate blocks is 20-25% more economical than ordinary houses, then a house whose walls are insulated from the outside gives savings of up to 40%.

Such a house with insulation will help you to reduce heating costs by almost 2 times, which is a pretty good indicator today.

How much does such house insulation cost?

No matter how much it costs you to insulate your home, these are all small things compared to how much this home improvement will help you save.

Foreword... How to properly insulate a house from gas silicate, how to insulate a house from gas silicate from the inside - these are the questions the owners ask country houses from a gas silicate block. In this article, we will consider the technology of insulating a gas silicate block, show a video of the best way to insulate a house from gas silicate from the outside and a master class on insulation country house thermal panels.

Insulation of the facade of the house from gas silicate blocks- this is a reliable preservation of warmth, coziness and comfort of suburban housing, but is it necessary to insulate the house from aerated concrete. By designation, cellular concrete is subdivided into structural, structural and heat-insulating and heat-insulating. According to the method of production, concretes are subdivided into aerated concrete, aerated concrete and aerated concrete. The cellular structure in the blocks is formed with the help of gas, in the foam concrete with the help of foam.

How to insulate a house from gas silicate

About operational characteristics and properties of gas silicate read in GOST 25820-83 Light concretes, GOST 25820-2000 Technical conditions... If during construction, you choose aerated concrete, then the calculation of the thickness of the walls is done on the basis of SNiP II-3-79 of 2005 "Construction heat engineering" and SNiP 23-01-99 of 2003 "Construction climatology". According to these SNiP, on the basis of modern standards for middle lane Russia, the thickness of the walls made of cellular blocks should be from 640 to 1070 mm.

Manufacturers of gas silicate blocks assure buyers that a wall thickness of 300 - 400 mm is sufficient for a residential building. But whether the manufacturers took into account the heat loss through the "cold bridges" (window lintels, the solution between the blocks and the reinforcement mesh) in their calculations, this is still a question. It is better, with the help of the designers, to calculate and decide what thickness to make walls out of blocks based on the frost resistance and density of the blocks, how to insulate a house from aerated concrete in order to maintain coziness and comfort in the house.

The better to insulate a house from gas silicate outside

Gas silicate blocks are widely used in private, low-rise construction. Gas silicate itself is a good heat insulator, but due to cold bridges, moisture absorption from blocks, masonry joints, it is additionally necessary to insulate buildings from gas silicate. This makes the question of how to independently insulate a house from gas silicate blocks, what materials to use in work?

Materials for insulating a house from gas silicate outside can be different. Traditional heat-insulating materials are widely used today: mineral wool, expanded polystyrene, polystyrene and "heat-insulating" plaster mixes. In Russia, they also began to use thermal panels for thermal protection of walls (thermal siding, heat siding), which combine high thermal insulation and excellent appearance.

It is possible to insulate the aerated concrete facade, like any other facade, from the outside and from the inside. We wrote earlier about the insulation of the facade of the house under the siding with expanded polystyrene and the insulation of the facade of the house under plaster with mineral wool. It is better not to insulate a wall of aerated concrete from the inside with expanded polystyrene, since in this case the blocks are not protected from freezing and moisture.

We insulate the gas silicate block with expanded polystyrene and mineral wool

At house insulation from gas silicate blocks with expanded polystyrene outside with your own hands is not required additional vapor barrier... Expanded polystyrene plates are not afraid of moisture and are durable. The insulation is attached to the facade with glue, then additionally secured with disc dowels. You can apply plaster on top or make a façade with vinyl or metal siding.

To insulate the house from a gas silicate block with mineral wool outside on your own, you should first make a vertical crate on the facade, lay mineral wool between the bars. Since mineral wool absorbs moisture, it is imperative to protect it with a vapor barrier on both sides. On top of the insulation, you can fix siding or plaster the facade for painting.

How to insulate a house from a gas silicate block with thermal panels

Thermal panels will cope with the protection of the outside wall from moisture and mechanical damage. Thermal panels are made with a finish from natural stone, with porcelain stoneware, with clinker and ceramic tiles... There is an opinion among builders that it is better not to insulate gas silicate with thermal panels from the street, as this prevents the blocks from "breathing" and ventilating.

Practice shows that a ventilated facade, ventilation openings in the basement of the building and under the roof canopy allow the wall to breathe normally without accumulating moisture. Thermal insulation of walls made of gas silicate outside with thermal panels has a number of advantages: durability, environmental friendliness, resistance to mechanical damage, ease and speed of installation.

For a start, a crate made of galvanized profiles or timber is attached to the gas silicate walls. Thermal panels are already attached to the crate. The expensive work of professional installers is not required. To install thermal panels on the crate, you will need a grinder, jigsaw, perforator, screwdriver, building level, a gun for polyurethane foam as well as a little patience.

Video. Warming a house from a gas silicate block with thermal panels

To insulate a house from gas silicate blocks from the street with thermal panels on gas silicate house we fix the crate so that a ventilated space remains between the thermal panels and the facade of the house. On the lower part of the wall, we beat off a horizontal line using a level. Along the line, we install the starting bar and fasten it with self-tapping screws, using a puncher and a screwdriver.

We install suspensions above the starting bar. In these suspensions, we install strips from a U-shaped profile (60 mm x 27 mm). We fasten the guide strips with four self-tapping screws. In this way, we sheathe the guides around the entire perimeter of the wall of the house. We put two planks in the corners of the house and on the slopes. This is necessary for fixing the corner elements and adjoining thermal panels on the slopes.

Along the initial finish at the bottom of the plinth, at the level of the starting bar, using a level, we install an ebb. Between the profiles we install mineral wool, you can also use expanded polystyrene plates. We attach thermal panels to the vertical profiles with self-tapping screws. All mounting gaps at the corners are sealed with foam. The seams between the thermal panels are carefully sealed with grout.

Video. How to insulate a house from gas silicate

Comments:

Thermal insulation of a house from gas silicate blocks is a reliable preservation of heat in the cold season. By itself, to which the gas silicate belongs, it is an excellent heat insulator. However, due to high level moisture absorption of this material, as well as due to cold bridges that can form in the places of masonry joints, aerated concrete walls need insulation and additional protection from moisture. Therefore, the question of what and how to insulate walls made of gas silicate is quite relevant today.

The need for work on the insulation of private housing

It should be noted that load-bearing walls houses with a thickness of at least 30 cm, constructed from aerated concrete blocks with a strength class D400, fully meet all standards in terms of thermal insulation. Therefore, they do not need to install an additional layer of insulating material.

However, in the countryside one-story construction very often gas silicate is used with a thickness of not 30 cm, but 20 cm with a strength class D200. Walls made of this material have poor thermal insulation, so they need additional insulation... External cladding plays an important role in the use of insulation. No matter how carefully the masonry of the blocks is done, such a house will not have a beautiful appearance without external finishing. Therefore, to make the housing presentable, an external finish is used, which is best mounted on a heater, in compliance with all standards for steam and waterproofing.

From the above, we can conclude that it is necessary to insulate walls from gas silicate in the following cases:

during construction, aerated concrete with a density below D500 was used;
wall thickness does not exceed 30 cm;
the masonry seams are thick;
the house is located in a region with harsh climatic conditions.

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Materials for insulating gas silicate outside

High-quality thermal insulation assumes wall insulation from gas silicate blocks both outside and inside the house. When choosing a heat-insulating material, it is necessary to pay attention to the following characteristics:

thermal conductivity - the ability of a substance to transfer heat (the less important this indicator, the more heat will be stored inside the house);
breathability - the ability of a heater to pass air;
vapor permeability - the ability of a material to pass water vapor contained in the air;
moisture resistance - due to its porous structure, gas silicate absorbs moisture well, so it needs additional protection against increased level humidity;
fire resistance - the ability of a heater to withstand an open fire;
resistance to negative impact living organisms and chemical substances, which allows you to increase the life of the insulation.

The most popular thermal insulation materials for external insulation walls made of gas silicate blocks are:

mineral wool;
expanded polystyrene;
thermal panels.

Mineral wool has been used as a heater for a very long time. However, even with excellent quality its production and correct use after a few years this material begins to lose its thermal insulation characteristics. This is due to the fact that mineral wool is not able to fully protect the walls from moisture. As positive sides mineral wool should be noted for its fire resistance, environmental safety and ease of installation.

External insulation of a house made of gas silicate with expanded polystyrene also has several negative points... This material has a low level of environmental safety and poor vapor permeability, which can adversely affect not only the gas silicate blocks, but also the microclimate in the house.

Thermal panels combine excellent thermal insulation characteristics and a beautiful appearance, therefore, when using them, there is no need to additionally produce exterior decoration at home. There is an opinion that it is better not to insulate a house made of gas silicate blocks with thermal panels, since this does not allow the walls to breathe. However, the way out of this situation can be very simple: create a ventilated facade using technological holes in the basement of the house and under the canopy.

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External insulation of walls made of gas silicate blocks with mineral wool and expanded polystyrene

To insulate walls with mineral wool (expanded polystyrene) with your own hands, you need to prepare the following tools and materials:

electric drill with a set of drills;
building level;
comb spatula;
hammer;
mineral wool (expanded polystyrene) in the form of plates;
deep penetration primer;
glue;
dowels.

Fastening of mineral wool and expanded polystyrene is carried out directly on the gas silicate, therefore, the first step is to thoroughly clean the walls from dust and debris, and then treat them with a deep penetration primer, which will improve the adhesion of the glue. Further, according to the instructions, the glue itself is prepared, after which it is applied with a comb-type spatula to the insulation sheet in an even layer.

The first row of slabs is mounted and their horizontal evenness is checked using building level... The next rows must be laid with a slight shift so that the seams of the slabs do not coincide. For a more reliable fixing of the plates, plastic dowels are used, which are installed at the joints of the plates (2 pcs.) And in the middle of each element (1 pc.). After the glue has set, the insulation can be plastered, having previously applied a reinforcing mesh to it, and then painted with facade paint.

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Do-it-yourself external insulation of the house with thermal panels

Insulation of the wall from gas silicate blocks along the facade: 1 - gas silicate block; 2 - horizontal crate - LVL timber 45 * 45mm; 3 - Ursa PureOne plate; 4 - vertical crate - LVL timber 45 * 45mm; 5 - hydro, - windproof membrane; 6 - counter-beam LVL 30 * 45mm.

Thermal panels make it possible not only to insulate walls made of gas silicate blocks, but also to reliably protect them from negative impact moisture and mechanical damage. This material is available in tiles, porcelain stoneware and natural stone finishes.

Installation of thermal panels is carried out on a galvanized lathing, which allows you to create between the insulation and building material ventilated space. First of all, an L-shaped starting bar is fixed at the bottom of the wall using a perforator and screws, the evenness of which is checked using a building level. Above the starting strip, suspensions are attached, into which the strips from the U-shaped profile are mounted. In this way, the frame is constructed over the entire finishing area.

Further, sheets of mineral wool or expanded polystyrene are laid between the profiles, after which thermal panels are attached to the vertical profiles using self-tapping screws. On the last stage All installation gaps are sealed with foam, and the seams between the panels are filled with trowel.

By their structure, gas silicate blocks easily absorb water, which in the future can lead to microcracks, and this affects the duration of operation. Do-it-yourself insulation will help solve this problem. gas silicate walls outside.

Why insulate the walls outside

Insulating the building from the outside will not only reduce energy losses, but also save on heating costs.

With minimal skills construction works you can save a lot. The location of the insulation outside will allow to move the dew point away from interior walls... At the same time, the house will be warm and the walls will remain dry.

If you place the insulation inside, then under the influence of various climatic conditions the walls will get damp. The main disadvantage of this method of insulating houses from gas blocks is the high probability of the formation of fungus and mold.

Options for the position of the insulation layer outside

Moisture does not penetrate into the blocks, but outer layer under its influence it can be disturbed. Therefore, it is very important to insulate the facade from the outside before finishing the finishing work.

Insulation materials: brands, types, characteristics

For insulation of gas silicate walls there is wide choose materials that have their own advantages and disadvantages.

Synthetic insulation or based on natural minerals have a lot of positive properties:

do not change shape when exposed to moisture;
do not rot;
have long term operation;
have low thermal conductivity.

To a greater extent, these properties are possessed by: mineral wool, polyurethane foam, polystyrene, expanded polystyrene. Also mention should be made of thermal panels. This material appeared on the market relatively recently. Thermal panels are characterized by high properties and give the building an excellent look. However, the cost of thermal panels is much higher than the cost of other heaters.

Materials are produced in the form of a slab, which is convenient for insulating the walls of the house. In order to make the right choice, it is necessary to compare the characteristics of gas silicate and the listed heaters.

When choosing a heat-insulating material for insulating gas silicate walls from the outside, it is necessary to familiarize yourself with their advantages and disadvantages.

Styrofoam

Common material for facade insulation. Polyfoam is characterized by good thermal insulation properties, as well as wind and sound insulation properties. The material is easy to transport and has a light weight... Plus it's cheap and different. simple installation... For gas blocks, it is better to use foam with a thickness of 100 mm. Polyfoam does not change its properties for a long time.

Styrofoam plates

The most important indicator the quality of the foam is its density. The optimum density of the material for insulating the facade from the outside is from 15 to 25 kg / m 3. Typically, such density is possessed by PSB-S-25 foam.

Mineral wool

This heat-insulating material allows steam to pass through and is the most demanded in construction. It will not only protect the walls, but also extend the service life of the gas blocks, and also avoid problems that may arise during installation. internal thermal insulation... Mineral wool as a heater is characterized by high sound insulation properties, as well as fire resistance.

Mineral wool is one of the popular thermal insulation materials

Minvata is sold under different brands e.g. KNAUF, ISOVER, URSA. The thickness of the slab can be up to 200 mm.

Polyurethane foam

It belongs to the group of porous gas-filled polymers based on polyurethane components.

Polyurethane foam is characterized by high technical characteristics

Is different mechanical strength, ease and expandability. This material is convenient to apply and use in work. However, polyurethane foam is characterized by low fire resistance. In addition, this material is afraid of many acidic and alkaline solutions.

Expanded polystyrene

For the production of material, gas is used, due to which volume is created. It is characterized by low thermal conductivity, vapor permeability and moisture resistance. The material is durable and harmless. There are fire-resistant grades of material that can be extinguished when exposed to a flame.

Gas silicate is vapor-permeable, i.e. passes water vapor. To maintain this property, vapor permeability is important. insulation material was no less than the facade of gas silicate blocks.

Expanded polystyrene is actively used to insulate not only walls, but also the floor, roof, ceiling

Polyfoam and polyurethane foam are characterized by low vapor permeability, and basalt wool allows steam to pass through and helps to remove it from the insulation. Therefore, mineral wool is most often used. Other heaters can be used, but there will be additional costs for the forced ventilation system.

Important! To calculate the amount of the selected insulation, it is recommended to proceed from the total area of all walls. Further, from the amount received, you need to subtract the dimensions of all windows and doors. In this case, it is important that there is a margin of at least 5%. Surplus material can always be used on the farm.

Tools and materials

Before proceeding with the installation of insulating gas silicate walls, you should prepare necessary materials and tools. For work you will need:

Insulation material.
Glue.
Special container for diluting the glue.
Drill.
Level.
Dowels.
Putty knife.
Perforator.
Primer.
Plaster.

Preparatory work consists in cleaning the walls from dirt and dust. This is necessary in order to ensure high-quality adhesion of the glue to the insulation.

The sequence of works on the insulation of walls made of gas silicate blocks outside with mineral wool

The work on insulating the facade from the outside is carried out in several stages:

Installation of vertical battens. The first row of beams should be located along the border of the base.

Installation of ecowool lathing

After installing the lathing, it is advisable to cover them with a layer of antiseptic. This will prevent the material from rotting. Instead of bars, you can use a metal profile.

Laying of hydro-vapor barrier. The installation of the vapor barrier is carried out in a continuous layer, starting from the bottom. In this case, it is important to overlap the layers of at least 15 cm and glue the joints of the vapor barrier with adhesive tape.
Installation of mineral wool. Attachment to the wall from the outside is carried out with glue. Additionally, dowels can be used for fastening. When installing thermal insulation, it is necessary to ensure that the gap between the plates does not exceed 5 mm. If more than 5 mm, cracks may form.

The process of laying mineral wool

Mineral wool slabs are laid in the form of brickwork. Then fix a layer of insulation at the joints and in the middle. It is recommended to leave the insulation for a while in order for it to stand.

Laying the second layer of hydro-vapor barrier. The film is fastened with a stapler. Additionally, it can be fixed with tape or nails.

Installation of a counter-lattice. This allows you to provide a ventilation gap so that moisture evaporates and the surface of the vapor barrier is ventilated.

Application finishing materials... As outer cladding you can use siding, decorative brick and etc.

Insulation of the walls of the house from gas silicate blocks from the outside can be done with your own hands, if you strictly follow the instructions.

Insulation of the facade with expanded polystyrene

Step-by-step instructions for insulating a house outside using expanded polystyrene:

Use glue to glue the polystyrene sheets onto the blocks and leave for 24 hours. Join the corners and hammer in the dowels in the middle to secure the panels more firmly. For even laying, use a level. Don't worry if the seams don't match.

Styrofoam laying technology

Fasten the fiberglass mesh. It will prevent cracking of the plaster and improve the adhesion of the material. Reinforcement begins with fixing the corners, and only then the entire surface is fixed, starting from top to bottom.

Plaster, paint and sheathe the surface with siding.

The scheme of thermal insulation of gas blocks with foam

If you use expanded polystyrene to insulate the house outside, then additional protection is not needed. It is important to remember that the thickness of the facade insulation slabs should be calculated taking into account climatic conditions.

On the construction market there is big choice glue. You can use ready-made dry mixes (Kreisel 210, Ceresit CT85, etc.), liquid adhesive composition(Bitumast). You can also use ready-made assembly adhesive(Ceresit CT 84 “Express”, Tytan Styro 753, etc.). The adhesive should be applied around the perimeter of the slab, as well as additionally in some areas.

Installation of insulation on walls made of gas silicate blocks is not difficult and can be done independently, thereby saving money.