Insulate a gas silicate house. How to insulate a house made of gas silicate blocks. How to insulate a house made of gas silicate blocks in two accessible ways

How to insulate gas silicate blocks from the outside?

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

Reasons for insulation

As you know, gas silicate is a porous material, which makes it warm. The thermal conductivity coefficient of cellular concrete (gas silicate) depends on the brand of this product (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 require insulation. But it's not that simple.

Due to their structure, the blocks are very easily saturated with water. This leads to microcracks appearing. As a result, the lifespan and effectiveness of the material is significantly reduced. Insulating a house using gas silicate blocks from the outside solves this problem. External insulation also saves usable space inside the house.

Insulation methods

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

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

This method involves a ventilated system and is more difficult to implement than the previous method.

Materials

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

• foam;
• mineral wool;
• thermal panels.

Let's talk in more detail about these materials.

Foam plastic

Foam plastic is one of the most common materials for insulating facades. Gas silicate walls are no exception. Despite its energy saving, it is also environmentally friendly and fireproof. Those who decide to insulate with foam plastic also note that it is quite cheap and easy to install.

What kind of foam should you use 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 layer of foam plastic 100 mm thick.

An experienced specialist will say that it is better to make a layer of foam plastic 100 mm thick.

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

Re-priming should only be done when the previous layer has dried.

The next step is to paste the foam directly onto the gas silicate blocks. For this, a dry glue mixture is used. In the instructions on the packaging of this substance you can find all the necessary details for working with the glue.

Usually in country houses gas silicate blocks of the D200 brand are used, so do not skimp on the foam glue and apply it to the entire surface. Thus, the thermal insulation will fit tightly to the wall, which will have a beneficial effect on the insulation.

Foam sheets should be fastened from bottom to top and only when bottom sheet already firmly glued. Why? This will help prevent the sheet from slipping, breaking the level. For additional strength, you can install an L-shaped profile below, leveled.

In addition, foam plastic slabs should be fastened in the same way as brick laying is done, that is, with a shift of half a sheet. This will also increase the strength of the structure.

The gaps between the plates should be covered with glue or blown out with foam. You can also do it a little differently. As mentioned above, it is recommended to make a layer of foam 100 mm. However, to achieve this, it is not necessary to buy slabs of such thickness. 50 mm slabs will be sufficient, but glued in two layers so that the joints do not coincide. This will help you to worry less about blowing in 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 this, 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 applying plaster and painting or decorative plaster. It all depends on your taste.

Mineral wool

Gas silicate is a vapor-tight material, therefore mineral wool, whose vapor permeability is a well-known fact, is suitable for insulation. It also does not burn and has soundproofing properties.

But there are also disadvantages. For example, cotton wool absorbs water and with 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 it is possible or not to insulate your house in this way, but in any case, if you nevertheless decide to choose mineral wool as insulation, its algorithm of actions is similar to that of attaching polystyrene foam.

To begin with, it is worth clearing the walls of debris and dust by priming the surface of the walls made of a gas silicate block. And in this case, you shouldn’t limit yourself to just one time. It's better to repeat several times.

Installation of wool slabs is carried out in the same way as for foam plastic. The first row is leveled and attached to the wall using 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-slab offset so that the seams do not coincide.

After installation, you should give the insulation time to stand and dry, and only then can you continue work.

The next step is application to mineral wool. A mesh is attached to this glue, which is slightly recessed. You also need to overlap 1 cm at the joints of the mesh. After the glue has dried, apply another layer.

The final stage is, of course, plaster. At the same time, the house “breathes”, since the plaster allows steam to pass through. However, as already mentioned, be careful, since damage to the plaster layer will have a bad effect on the thermal insulation.

Thermal panels

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

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

This type of insulation refers to 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 resolved.

How is insulation done with thermal panels? Below is the algorithm of actions

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

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

After installing the plank, you should proceed to the next stage, namely installation of the sheathing. It usually consists of galvanized metal UD profiles or wooden beams. The profile is installed on the starting strip and vertically attached parallel to the wall to the hangers. The suspensions are mounted with anchors at a distance of 500 mm from each other.

Thus, we sheathe the entire perimeter of the house. We put two strips on the corners and slopes, as this is necessary for installation corner elements thermal panels. At the level of the starting strip, below along the base, you need to install a low tide.

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

After finishing the work, all gaps are sealed with foam, and the screws and seams are rubbed down.

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 the insulation, a windproof membrane is installed.

So, today we looked at how to insulate a house from gas silicate from the 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 certain technology. It is not always necessary to insulate a house made of aerated concrete due to the characteristics of the material, however, in the central zone of our country, rather severe winter frosts.

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

How can you insulate gas silicate?

Insulating a house made of gas silicate blocks involves the use of a wide variety of materials. Most often, however, two types are used - mineral wool and polystyrene foam. It's worth talking about the advantages and disadvantages of both technologies in more detail.

When insulating a house made of gas silicate blocks with your own hands using polystyrene foam, do not forget about the ease of installation of this material. It can be mounted with ease, and a wide variety of tools can be used to cut it. Some use a regular construction knife for these purposes, while others use a hacksaw.

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

As for mineral wool, it is more acceptable as insulation for a house made of gas silicate blocks. This is simply an ideal option, which is widely used today. Mineral wool perfectly allows air to pass through and keeps it warm. This material is a little more difficult to install, 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 frequently than those discussed above.

Tools and materials

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

• warm insulating material, in this case we will talk about mineral wool;
• dowels;
• glue;
• perforated corners;
• container for diluting glue;
• building level;
• fiberglass mesh;
• perforator;
• spatula.

Basically, this should be enough to carry out the entire range of events.

Now you can proceed directly to insulating 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. This is done 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 through plaster and primer. Only thorough surface preparation will allow all work to be carried out to the highest possible quality. At the ground floor level, it is worth installing the frame.

It will serve as additional support for the insulation. Beacons should be placed at the corners of the house. Next comes the actual process of attaching the mineral wool to the wall. First you need to coat 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 cross-shaped joints.

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

It is worth noting the fact that mineral wool itself is a soft material that needs to be further strengthened.

It is for these purposes that fiberglass mesh is used. Glue is first applied to the surface of the insulation, and then the fiberglass mesh itself is installed. Another layer of glue is additionally applied on top of 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 extremely simply. For these purposes, the same perforated corners that were purchased earlier are used.

chudoogorod.ru

Insulation of a house made of gas silicate

In the previous article we talked about insulating walls with cardboard. Today we will talk about buildings made of foam concrete. One way to preserve heat is to insulate the house from the outside using gas silicate blocks. Gas silicate blocks have high heat transfer properties, so you should immediately protect your home from heat loss. Below you can find the answer to the question: “How to insulate a house made of gas silicate blocks?” Following the method of insulating a house from gas silicate blocks will help to avoid mistakes in the process. After all, the finishing of walls made of gas silicate should be carried out taking into account factors such as climatic conditions, the thickness of the blocks and the specifics of construction. You still need to decide on the material to work with.

Why is it necessary to insulate houses made of gas silicate blocks?

External insulation is always better than internal insulation, since the dew point moves 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. In the construction market, gas silicate has gained great popularity due to its high performance properties. This material is durable, environmentally friendly, soundproofing and economical. Savings are ensured by heat retention. A building made of cellular concrete reduces heating costs by up to 40%.

But it is worth considering such a disadvantage as the ability to transmit moisture. Gas silicate perfectly absorbs liquid due to its porous structure and masonry joints, so the wall should be protected. The solution to this problem is to insulate the gas silicate from the outside.

Existing methods of insulation

Traditional materials for moisture protection are:

• extruded polystyrene foam;
• mineral wool;
• foam;
• plaster mixtures.

If we talk about new products that have appeared relatively recently on the building materials market, we should mention thermal panels. They not only provide excellent protection from moisture, but also give an excellent appearance to the building. True, the cost is higher than that of conventional insulation. 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;
• spatula;
• plaster;
• primer;
• perforator;
• dye.

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

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

If you decide to install at home hydrogen heating do it yourself, then you will need clear instructions for performing the work. Fortunately, we recently looked at this topic and came to the conclusion that there is a benefit, and not a small one.

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

The use of mineral wool for insulation

The mineral wool is glued to universal construction adhesive and additionally nailed with dowels.

Gas silicate, as a vapor-permeable material, is preferably insulated because it also allows steam to pass through. Therefore, insulating gas silicate with mineral wool will extend the life of the walls and eliminate additional problems when internal insulation. After all, with vapor-tight external insulation in the house, you will have to additionally equip ventilation. Insulation with mineral wool provides additional sound insulation and gives an attractive appearance structure. In addition, mineral wool has non-flammable properties. This material is purchased in slabs.

Work on insulation with mineral wool consists of the following stages:

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

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

A level is used to lay the first row of slabs evenly. They are installed according to the principle brickwork so that their seams do not match. They are attached to the wall using glue, which is used according to the instructions indicated on the package. Then additional fixation is carried out with dowels: 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, so its application does not block the passage of steam in mineral wool and gas silicate. The house continues to breathe.

If there is an opportunity to make combined heating at home, then do not miss it, it is worth it. Thanks to this, you can heat your home with several types of energy, which is very convenient.

If we talk about the economic component of heating in diesel fuel, then reviews insist on the significant benefits of installing an oil-fuel boiler. You will find details here.

How to use expanded polystyrene to insulate a gas silicate house from the outside?

Concrete blocks can be insulated with polystyrene foam; the thickness of the insulation should be calculated based on climate zone.

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

This material is environmentally friendly, fireproof and durable. It also has high energy saving rates. A foam thickness of 3 cm corresponds to 5.5 cm of mineral wool.

Foam boards are used for work. Insulating a house with this material is done as follows:

• slabs are installed;
• after that they should be left to settle for a day;
• tightened 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, apply it only to part of the wall (for the bottom row of slabs).

Expanded polystyrene is laid using glue. A level is used for even laying, and the slabs are lightly pressed to adhere to the wall. The seams of each row should not match; there is no need to leave a gap between the plates. This will ensure reliable adhesion. For high-quality reinforcement, the corners of the building are first strengthened, and then the rest of the surface. You need to move from top to bottom. If this technology is followed and a good result is obtained, the question of whether gas silicate can be insulated with foam plastic no longer arises.

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, cladding tiles and a moisture-resistant slab. The insulation can be in the form of polystyrene foam or polyurethane foam. The moisture-resistant board is the structural layer, and the facing board allows you to avoid work at the final stages - puttying and painting. Installing thermal panels greatly simplifies the insulation process. Thermal panels are installed on the wall sheathing, and not on the wall itself.

The sheathing is made of galvanized steel and is attached to the wall using a screwdriver, hammer drill, self-tapping screws and dowels. The design consists of L-shaped strips, hangers, and U-shaped profiles. After installation is completed, insulation – expanded polystyrene or mineral wool – is placed into the frame made of profiles. Then thermal panels are attached to the structure profiles.

How to insulate a bathhouse made of gas silicate blocks?

The bathhouse, as a room with high humidity, requires additional thermal insulation. But how to properly insulate a bathhouse made of gas silicate blocks? It should be borne in mind that materials for bath insulation should not emit harmful substances at high temperatures. Before insulation, it is necessary to apply a special impregnation to the wall. For a bathhouse, basalt insulation in the form of cotton wool is suitable as external insulation; polystyrene foam is also used. Also read: “Some aspects of floor insulation in a bathhouse.”

Regardless of the protective material, it is necessary to leave a ventilation gap to dry the heat insulator.

Insulation of a bathhouse made of gas silicate blocks is carried out in stages:

• protective material is attached;
• the sheathing is installed;
• the sheathing is stuffed (using clapboard).

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

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

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

utepleniedoma.com

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

If you insulate a house from gas silicate blocks from the outside, you can achieve very good effect in terms of saving on space heating. This 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 characterized by high heat and sound insulation, lightness and large dimensions. 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, prices for laying gas silicate blocks. Such characteristics of gas silicate blocks make it possible to quickly erect energy-efficient buildings, but they are not highly durable.

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

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

Gas silicate blocks have low resistance to moisture. They absorb it and, when frozen, can form microcracks, which reduce their effectiveness and strength. On average, this material is designed for 200 freezing cycles. During a winter with unstable weather, more than 20 such cycles can occur, 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.

Such buildings are best insulated in two layers. The first is an insulating material that can absorb moisture, and the second is an external one 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 nearby surfaces remain almost dry.

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

The second layer can be a wide variety of different materials, all of which are suitable for outdoor use. These can be plastic panels, wood or special plates made from complex polymers. The choice always remains with the consumer. It all depends on desire and financial abilities.

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 suit the taste of any person.

Foreman's advice: You can save money on outer skin, 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 occurs as follows:

1. Creating a frame outside the house - a frame is made to fix the insulation and plastic panels.
2. Strengthening the insulation in the frame - it is fixed so that it fits snugly against the wall of the house and has no cracks or gaps. Thus, the ingress of moisture onto the wall is almost completely eliminated and the amount of condensation that forms on the walls during temperature changes is minimized.
3. Sewing the frame with external material is carried out so that there are no holes or cracks, which provides additional protection and simply ensures a beautiful appearance.

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 can insulating your home save?

If a house made of gas silicate blocks is 20-25% more economical than conventional 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 reduce heating costs by almost 2 times, which is quite good indicator.

How much does it cost to insulate a house like this?

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

No matter how much it costs you to insulate your home, it's peanuts compared to how much this home improvement will help you save.

Comments:

Insulating a house using gas silicate blocks is a reliable way to retain heat during the cold season. By itself, which includes gas silicate, 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 places of masonry joints, walls made of aerated concrete need insulation and additional protection from moisture. Therefore, the question of how and how to insulate walls made of gas silicate is quite relevant today.

The need for work on insulation of private housing

It should be noted that the load-bearing walls of the house with a thickness of at least 30 cm, constructed from aerated concrete blocks with 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 suburban one-story construction very often gas silicate is used with a thickness of not 30 cm, but 20 cm with strength class D200. Walls made from such 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 blocks are laid, without exterior finishing such a house will not have a beautiful appearance. Therefore, to make housing presentable, external finishing is used, which is best mounted on insulation in compliance with all standards for vapor and waterproofing.

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

• during construction, cellular concrete with a density below D500 was used;
• wall thickness does not exceed 30 cm;
• the masonry joints turned out to be 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 involves insulating walls made of gas silicate blocks both outside and inside the house. When choosing a thermal insulation material, you need to pay attention to the following characteristics:

• thermal conductivity - the ability of a substance to transfer heat (the lower the value of this indicator, the more heat will be retained inside the house);
• breathability - the ability of insulation to allow air to pass through;
• vapor permeability - the ability of a material to transmit water vapor contained in the air;
• moisture protection - due to its porous structure, gas silicate absorbs moisture well, so it needs additional protection from high levels of humidity;
• fire resistance - the ability of insulation to withstand open fire;
• resistance to negative influence living organisms and chemicals, which allows you to increase the service life of the insulation.

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

• mineral wool;
• expanded polystyrene;
• thermal panels.

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

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

Thermal panels combine excellent thermal insulation characteristics and beautiful appearance, so when using them there is no need to additionally produce external finishing Houses. There is an opinion that it is better not to insulate a house made of gas silicate blocks with thermal panels, as this does not allow the walls to breathe. However, you can get out of this situation very simply: create a ventilated façade 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 following tools and materials:

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

Mineral wool and expanded polystyrene are attached directly to gas silicate, so the first step is to thoroughly clean the walls of dust and debris, and then treat them with a deep penetration primer, which will improve the adhesion of the glue. Next, according to the instructions, the glue itself is prepared, after which it is applied to the insulation sheet in an even layer with a comb spatula.

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 more reliable fixation of the slabs, plastic dowels are used, which are installed at the joints of the slabs (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 a house with thermal panels

Insulation of walls made of gas silicate blocks along the facade: 1 - gas silicate block; 2 - horizontal sheathing – LVL timber 45*45mm; 3 - Ursa PureOne plate; 4 - vertical sheathing - 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 produced with finishing made of tiles, porcelain stoneware and natural stone.

Thermal panels are installed on galvanized sheathing, which allows you to create a ventilated space between the insulation and the building material. First of all, an L-shaped starting strip is fixed at the bottom of the wall using a hammer drill and screws, the evenness of which is checked using a building level. Above the starting bar, hangers are attached into which the U-shaped profile bars are mounted. In this way, a frame is constructed over the entire finishing area.

Next, 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. At the last stage of work, all installation gaps are sealed with foam, and the seams between the panels are sealed with a grout mixture.

In two programs from the Stroy!ka (Construction) series, expert Andrey Kuryshev shared information about the construction of houses from gas silicate blocks. This material will be very useful, especially if you plan to build walls from gas silicate with your own hands. Andrey Kuryshev talks about the following:

• Layout of a house made of gas silicate blocks. Is it necessary to insulate a house using gas silicate?


• Construction of a house from gas silicate. Laying gas silicate. Adhesive for gas silicate.


• Insulation of a house made of gas silicate


• Interior partitions in a house made of gas silicate blocks


• Roof of a house made of gas silicate blocks


• Plastering walls made of gas silicate blocks. Ventilated facade.


• Using floor slabs in a house made of gas silicate blocks


• Gas silicate and moisture


• Characteristics of gas silicate

Construction: House made of gas silicate. We competently build and insulate a house from gas silicate blocks.
House made of gas silicate laid with glue. Internal walls are made of brick. House with shifted levels. Foundation insulation, foundation slab, blind areas with slabs of extruded polystyrene foam. How and why to separate the wood in the roof from the stone.

Stroy!ka: The truth about gas silicate

What is gas silicate? What are its properties? How to cover a gas silicate wall outside and inside to avoid moisture and related problems. Is it worth using gas silicate together with insulation?

Layout of a house made of gas silicate blocks. Is it necessary to insulate a house using gas silicate?
Large multi-level house. The enclosing structures are made of YTONG gas silicate blocks, and the internal walls are made of ordinary sand-lime brick. At first glance the building does not seem large. It's hard to believe there are 4 levels here. This type of architecture allows for the most ergonomic use of living space.

Four levels is very good. One flight of stairs passed and there was already a room. But in an ordinary house you need to go through two flights of stairs or crooked stairs.

In the basement there is a residential ground floor. It is insulated with extruded polystyrene foam around the perimeter. The foundation walls are made of blocks. Heating is installed here. Small windows have been cut. All work on this site is carried out by only three builders.

Construction of a house from gas silicate. Laying gas silicate. Adhesive for gas silicate.
How the work was carried out: We marked the site, tied a pit to the site, dug a pit, poured a slab, laid the foundation with FBS blocks, lined the walls with gas silicate (YTONG technology - seamless joint on an adhesive basis), laid floor slabs and a roof.

Building such a house was not difficult. These builders worked with gas silicate blocks and gas silicate in general for the first time. Gas silicate blocks were laid on glue. I have a positive attitude towards this technology. Previously, the dimensions were not maintained so accurately, they varied up to 5-10 mm, so it was not possible to lay them evenly on the glue. And now laying gas silicate blocks with glue is economical and quick. The house needed 80 bags of glue. Taking into account sand and cement, concrete would be more expensive (Note: The question remains about the environmental friendliness of the glue!) In addition, I think that cold bridges are excluded (unlike concrete mortar).

Gas silicate blocks are used in two sizes. Regular blocks 25 cm high, and above the window opening 10 cm high.

Insulation of a house made of gas silicate
Gas silicate wall 50 cm, additional insulation there won't be. Gas silicate here performs a load-bearing and thermal insulation function. If this is translated into brick, then in terms of thermal insulation properties it will probably be even more than a meter. The foundation and slab below were insulated with extruded polystyrene foam. The 120 mm blind area will also be polystyrene foam. The blind area serves as insulation and also allows the house to look more harmonious (a house without a blind area looks awkward). Theoretically, thermal blind areas should be done everywhere so that the cold does not reach the foundation. This is definitely necessary on heaving soils. But on sand bars it’s probably not necessary.

Walls made of gas silicate, in addition to non-vapor-transparent plasters, are afraid of non-vapor-transparent insulation, such as, in particular. When you wrap a house with it, it’s as if you’re wrapping it in plastic film. If plasters have at least some vapor transparency, then EPS is completely devoid of these properties.
If you insulate a gas silicate wall with extruded polystyrene foam, an even more catastrophic situation will begin to occur. If plaster and paint still have at least some vapor transparency, although insufficient, then extruded polystyrene (EPS) has no vapor transparency at all. IN certain time In winter, moisture and condensation will certainly form at the junction of polystyrene foam and gas silicate.

They wrote on my forum that they insulate houses in Siberia with polystyrene foam, after 5 years they remove it, and the whole wall is black with mold and black sludge. They are treated with chlorine and other expensive anti-mold agents, and then plastered again.

Houses made from gas silicate blocks should only be built from them! No insulation. You can budget a little on the thickness of the block. If the manufacturer recommends a 40 cm block for our climate, build from 50 cm. Then you will count on additional moisture that may occur during operation.

A vapor barrier is also used for the roof. The vapor barrier does not allow steam to pass through. Then there is insulation between the rafters, and waterproofing on top. The latter allows steam to escape from itself, but does not allow moisture from the roof to pass through. This allows moisture to roll off the roof. Mineral basalt wool is used as insulation (Note: The roof can leak, so using mineral wool in the under-roof space does not make sense. After all, mineral wool significantly loses its properties when exposed to moisture).

Interior partitions in a house made of gas silicate blocks
The interior partitions are made of white sand-lime brick. Sound insulation between rooms is much better than, say, from the same polystyrene foam or foam block. When you knock on a brick like this, the sound is dull. And when you knock on it, the whole house can hear it. The walls are mostly load-bearing, but few are non-load-bearing. In addition, the exhaust shafts are made of the same brick (Note: Plus, the high heat capacity of such walls allows you to store heat in winter and cold in summer).

Roof of a house made of gas silicate blocks
Ridge seal (shows foam-like tape). The roof will be ventilated to the ridge. To prevent midges from flying, this material is used. It will fit well and act as a filter. There will also be a mesh near the rafters (for a ventilated gap).

Ordinary roofing felt was used as waterproofing. Metal parts waterproofed to the tree. Previously, our grandfathers made from oak wooden nails. They drilled and hammered them.

Wooden beams for the roof. Lathing boards, rafter system. Regular wood is used (pine, spruce). The wood is impregnated with a fire-bioprotective composition. The powder dissolves in water. Wood can be soaked, can be well treated with a brush or spray.

The roof in this house is made using classical technology roofing construction. The tree here is separated from the stone base by roofing felt. In the program "" Andrey Kuryshev explained why and how to properly separate wood from stone.

Plastering walls made of gas silicate blocks. Ventilated facade.
Construction plaster ST 29 to go through the seams (caulk). This repair composition is used after installation.

A mesh is used to putty the facade. There will be decorative tiles up to the window.

As befits gas silicate, it is laid on a thin glue joint and plastered from the inside. The thermal properties of gas silicate are not bad, but they are very dependent on humidity. We have a wall made of gas silicate blocks. The main danger in a house made of such blocks is a change in the humidity conditions in the house in winter. At home during this period it is warm, say +20 degrees. In the warm air of a house, 1 m3 of air at a humidity of 50-60% contains approximately 20 grams of steam. Outdoors at -20 degrees and humidity 50-60%, water vapor in 1 m3 of air contains about 2 grams. At the same time, steam tries to move from where there is a lot of it to where there is little of it. This is called vapor permeation pressure. The task is to create a barrier inside the room so that this steam enters the wall as little as possible. To do this, the inside of the room is plastered. We see damp spots on the walls. The walls have just been primed. The soil binds the dust on the wall. Without primer, the wall is very dusty, so the putty may fall off. The soil also improves vapor permeability properties. Primer is an adhesive solution that prevents the penetration of moisture. Then this wall will be plastered, painted or wallpapered. It's better to do interior wall as less vapor permeable as possible. To do this you can glue vinyl wallpaper, paint with paint that does not conduct moisture well. Bathrooms and toilets are tiled. Those. We create as many obstacles as possible for moisture. Normal house must have ventilation to allow moisture to escape.

If steam has entered the wall, but it will still enter, then the possibility of unhindered exit to the outside must be provided from the outside. If the outer layer is less vapor-tight than the inner one, then the steam will enter inside and reach outer wall. The latter is cold in winter, there is a point in this wall called the dew point. It depends on the temperature inside the wall and the air humidity in it. A big mistake is to plaster a gas silicate house on the outside with cement hard plaster and paint it with some kind of vapor-proof paint. Then we will seal the wall from moisture.

I saw a sauna that was not vapor-insulated from the inside, but was simply insulated. The house was plastered with hard plaster and painted with a good paint that was clearly bonded to the surface. Over the course of several years, under a layer of plaster, the gas silicate cracked. Moisture accumulated near the outside of the wall. It froze and expanded the gas silicate. By knocking on the plaster, one could determine that it would collapse.

In general, houses made of gas silicate require a ventilated facade.

A ventilated facade is a system of steel or aluminum frame mounted directly on the facade of a building and lined with outside decorative panels.

The gas silicate remains uncovered from the outside. Some kind of slats are placed along the outer walls, on which the facade is hung (boards, siding, ceramic plates, plastic,...). Air should flow freely under the façade. Moisture should come out freely and unhindered from the unclosed wall and come out and erode.

Using floor slabs in a house made of gas silicate blocks
Many people are afraid that gas silicate is fragile. They have been building from gas silicate for a long time. But earlier the floor was made of wood, and in this case the floor was made of floor slabs. I stood on a cube with a side of 10x10x10 mm myself, there were no dents. It’s also scary that the nail is hammered in freely. But calculations show that everything is fine.

Gas silicate and moisture
They are afraid that gas silicate or aerated concrete will become saturated with moisture from inside. The surface itself does not absorb moisture. Just as she came in, she came out. If you cut the block, then the inner side already takes in moisture well. But there will be plaster on the inside. The outside will also be light plaster, so if it rains, the moisture will come out.

Characteristics of gas silicate
Gas silicate with a low volumetric mass of 500 kg/m3 has a compressive strength of 20 to 40 kg/cm2 due to autoclave processing, grinding of components and mechanical hardening. Shrinkage of gas silicate is up to 0.47 mm per meter, foam concrete - up to 5 mm. Gas silicate is used for masonry load-bearing walls cottages up to 4 floors, wall filling of frame high-rise buildings. The permissible load per 1 meter of a 40 cm thick wall is 112 tons.
Air enclosed in uniformly formed voids of cells with a diameter of 1-3 mm provides exceptional thermal insulation and heat-accumulating effect, superior to brick by 3-5 times. The high thermophysical properties of gas silicate allow houses to retain heat well, make the surface of the walls warm to the touch, and do not require additional thermal insulation material. Due to the large number of separated voids, the house has a very good heat storage ability and cools down slowly.

Another company that produces blocks high quality in Lipetsk, is the Lipetsk Plant of House Construction Products (LZID). LZID has organized the production of aerated concrete blocks of the world famous Hebel brand. The company has been producing small wall aerated blocks since 1995. In 2004, the production line was equipped with equipment for hermetically sealed packaging of blocks - finished products Packed in a special shrink film that allows you to store aerated concrete blocks on outdoors much longer than unpackaged ones.

Text notes on program materials "

Today, in construction (especially individual construction) a building material known as gas silicate blocks is used. And there are several reasons for such a significant popularity of blocks: low cost, resistance to low temperatures, durability. Moreover, the material is resistant to mold and rotting, weighs a little, therefore, insulating a house with gas silicate blocks (let's call this procedure that way) does not necessarily imply the presence of a strong foundation.

A distinctive feature of such blocks is that their structure contains special spherical pores, which increase both the thermal and noise insulation characteristics of the structure. In order for gas silicate blocks to be as strong as possible, it is necessary to increase their density, and this, in turn, leads to a deterioration in insulating properties (the problem is again in the pores). Therefore, it is quite obvious that buildings made of this material require additional insulation.

Insulation frame house

Previously, we talked about what materials are best used when insulating a frame house and described the entire process in detail; in addition to this article, we advise you to read this information

Main types and thickness of gas silicate blocks

This building material produced in strict accordance with GOST. More detailed technical requirements can be found at the link below.

GOST 25485-89. Specifications cellular concrete. File for download

Thus, the classification of concrete is made taking into account many factors. According to their purpose, they can be:

1. structural;
2. thermal insulation;
3. combined (being a combination of the previous two types).

And according to the method by which vaporization is carried out, the classification is as follows:

1. foam concrete;
2. aerated concrete;
3. gas foam concrete.

Pay attention! If you plan to build a house from gas silicate blocks, then you should first familiarize yourself with the relevant regulatory documentation(not only GOST, but also SNiP).

Now let's talk a little about the features of choosing concrete for building a house. If we are talking about low-rise construction(and in most cases this is the case), then to calculate the required thickness of the walls of the structure you need to rely on the relevant SNiPs.

SNiP II-3-79-2005. Construction heating engineering. Downloadable file (click the link to open the PDF in a new window).

SNiP 23-01-99-2003. Construction climatology. Downloadable file (click the link to open the PDF in a new window).

And if gas silicate blocks were chosen for construction, then, according to SNiPs, in the case of the middle zone of the state, the thickness of such products should vary from 64 to 107 centimeters. These calculations are based not only on the average thermal resistance in a particular band, but also on the principles created by the State Construction Committee.

If you believe the manufacturers and their numerous advertisements, then a thickness of 30-38 centimeters is enough to insulate a house with gas silicate blocks. Although it is unknown whether they took into account heat losses caused by the so-called “cold bridges” ( masonry mortar, reinforcement, various lintels) and natural humidity climatic conditions, inherent in the middle zone (the fact is that any aerated concrete absorbs moisture to one degree or another).

Pay attention! Such blocks should be laid on a special adhesive mixture. In this case, the thin-layer seam will be only 0.2-1 centimeter thick, which will have virtually no effect on the thermal conductivity of the entire structure. Moreover, the glue itself is a fairly effective heat insulator.

Thermal insulation of a building made of gas silicate blocks

Let’s immediately make a reservation that the gas silicate block can be insulated both from the inside and from the outside. Although external thermal insulation is more effective, since it will not reduce the free space inside the room. The optimal heat insulator in this case can be considered mineral wool (it costs about 1.8 thousand per cubic meter) and thermal panels, which are not only insulation, but also a ready-made finishing material. Let's start with thermal panels.

Method one. Insulating a house with thermal panels

These panels are available in a variety of finishes.

• Natural stone.
• Tiles.
• Porcelain tiles.
• Clinker.
• Seamless panels in which, as the name suggests, there are no seams.

There is an opinion that it is better not to insulate houses made of gas silicate blocks with such panels, since they do not allow “breathing”. But experience has shown that when using panels in ventilated facades, thanks to various gaps and openings, the heat insulator “breathes” quite acceptably, and moisture does not accumulate. Sometimes auxiliary exhaust ventilation is installed.

We should also talk separately about the advantages of insulating houses made of gas silicate with this material.

• They gain durability, but their original characteristics are preserved (in other words, cosmetic repairs won't take long).
• The panels themselves can be installed at any time of the year.
• The material combines excellent thermal insulation and performance qualities.
• It is elastic, so no gaps are formed due to thermal expansion.
• Finally, thermal panels are environmentally friendly and resistant to mechanical damage.

From a constructive point of view, the panels are a “pie” made of PPU foam that is resistant to moisture particle board and facing tiles. We also note that the panels can be laid either directly on the wall surface or on a specially equipped lathing.

Pay attention! In the case of gas silicate walls, the panels must be mounted on the sheathing. Moreover, the sheathing itself must be made of galvanized profiles.

Now - directly to the installation process. Insulating a house with gas silicate blocks consists of several technological stages.

Stage No. 1. Preparatory activities

To work you will need the following equipment:

1. "Bulgarian";
2. mounting level;
3. perforator;
4. a gun designed for blowing out polyurethane foam;
5. electric jigsaw;
6. screwdriver

Stage No. 2. Fastening panels to equipped sheathing

Step 1. Using a level, a horizontal line is marked at the bottom of the wall.

Step 2. On this line, a 150-150 galvanized strip is installed, made in the shape of the letter G, for which a hammer drill is used. The plank is attached with self-tapping screws in increments of 20 centimeters.

Step 3. Hangers are placed above the plank, along which the surface of the wall is marked. For one suspension, according to the markings, a pair of holes are made for plastic dowels. The latter are installed in them, and the suspensions themselves are screwed using self-tapping screws.

Step 4. Next, the planks, made from a 60x27 profile in the shape of the letter P, are mounted vertically. The planks are fastened with self-tapping screws to the hangers - two units on each side. It turns out that the profiles will be installed around the perimeter (the distance between the planks should not exceed 400 millimeters).

Step 5. In the corners window openings and the wall itself needs to be secured with a pair of strips, to which individual corner components will be attached for the subsequent installation of thermal panels. By the way, you don’t have to use double strips, but join the panels to each other at a 45-degree angle (all gaps will subsequently be filled with foam).

Step 6. The ebb is installed along the line drawn at the bottom of the wall, flush with the starting strip. Self-tapping screws (0.42x7 centimeters) are also used to fix it to the vertical guide bars.

Step 7 The frame is filled with a “breathing” heat insulator – expanded polystyrene or mineral wool. So cold air will not penetrate inside the sheathing.

Step 8 Thermal panels are screwed to the vertical guides using the same screws. Typically, the required pitch of the screws depends on the dimensions of the insulating boards.

Mushroom for attaching insulation

Previously, we talked about the main advantages of the disc mount, its price and the correct method of working with it; in addition to this article, we advise you to read this information

Stage No. 3. Installation of window and corner elements

We continue the procedure of insulating a house made of gas silicate blocks. First, all cracks and gaps near windows and corners are filled with foam. The gaps between the panels themselves should be treated with DSP grout.

Pay attention! In this case it is better not to use wooden laths, albeit carefully treated with antiseptics and fire retardants. The only correct solution is a galvanized profile.

Video - Thermal insulation of a gas silicate building using thermal panels

Method two. Mineral wool insulation

As noted above, for gas silicate blocks it is preferable to use vapor-permeable insulation. If this is not done, additional ventilation may be required. External insulation will not only extend the service life of the structure, but will also increase sound insulation qualities, and will also significantly improve the aesthetic properties of the facade. Mineral wool has been very popular lately. And indeed, it is inexpensive, and it is quite easy to install. The insulation process itself consists of preparation and, in fact, installation. Let's look at each of them.

During the installation process you may need:

1. dowels;
2. paint for facades;
3. ten drill;
4. fiberglass glass for reinforcement;
5. hammer;
6. special plaster mixture;
7. level;
8. primer mixture;
9. spatula (preferably comb);
10. special glue;
11. mineral wool slabs (density must exceed 150 kilograms per cubic meter, thickness - over 1.5 centimeters).

Stage No. 2. Direct installation

First, the surface is thoroughly cleaned, dirt and dust are removed. After this, the algorithm of actions should be as follows.

Step 1. The heat insulator is attached to the wall with glue (you must act in strict accordance with the instructions), evenly applied with a spatula to the sheet. When installing the first row, you need to be especially careful and use a level in your work.

Step 2. The slabs are fastened with “checkerboards”, as in the case of brickwork - the seams of adjacent rows should not match. The gaps between the plates should not exceed 0.5 centimeters, so that cracks will not form in the future.

Step 3. The heat insulator “stands”. For more reliable fixation, you can use plastic dowels, having previously made holes for them in the gas silicate. Dowels should be attached two at each joint between the plates, and one more in the center.

Step 4. The cotton wool is covered with glue diluted with water, then the mesh is embedded in it (the latter should be laid with an overlap of at least 10 millimeters).

Step 5. A second layer of glue is applied over the mesh, after which you need to wait until the surface is completely dry.

Step 6. Using a spatula, apply the primer mixture, then apply the plaster mixture, previously diluted with water.

Step 7 At the end, the wall surface is painted with special facade paint.

Method three. Foam insulation

A building made of gas silicate blocks can also be insulated with polystyrene foam, but it must not be too dense and vapor-permeable. You must act according to the instructions.

Stage No. 1. Preparatory activities

During the insulation process you will need:

1. dowels;
2. paint for facades;
3. ten drill;
4. mesh for reinforcement;
5. hammer;
6. plaster and primer mixture;
7. glue;
8. level;
9. foam boards;
10. spatula.

Now - directly to the insulation!

Stage No. 2. Insulation

Step 1. The process begins with a thorough cleaning work surface from dirt.

Step 3. The foam sits on the glue and is pressed lightly. The first row is laid (don’t forget to use a level), and the joints between the plates are coated with glue.

Step 4. Subsequent rows are attached in the same way as in the previous case (we are talking about “chess”).

Step 5. It is important that the plates fit as closely as possible to each other - this will provide more effective thermal insulation. It is advisable to fill the gaps between them with cut pieces of polystyrene foam.

Step 6. On external corners the slabs are attached with an overlap.

Step 7 After 24 hours, the slabs are tightened with dowels (the same as in the case of mineral wool).

Step 8 Reinforcing mesh is installed. You need to start from the corners.

Step 9 At the end, plaster and facade paint are applied.

Creating a ventilated façade

Such house insulation with gas silicate blocks is characterized, first of all, by durability.

Previously, we talked about how to independently calculate and calculate the dew point in the wall of a house; in addition to this article, we advise you to read this information

You can build a “light” facade, for which you will need the following equipment:

1. dowels;
2. hammer;
3. drill;
4. lace;
5. plumb line;
6. installation level.

In addition, you will need wooden slats for the sheathing (necessarily treated with an antiseptic) and the foam itself. You need to proceed as follows.

Step 1. A frame is assembled from slats corresponding to the thickness of the heat insulator (50-60 millimeters).

Step 2. Vertical bars are attached to the wall with anchor dowels in increments of 300 millimeters. Using a mounting level and a plumb line, the most even plane is ensured.

Step 3. The gaps between the vertical slats are filled with sheets of foam plastic, secured with special dowels (“fungi”).

Step 4. At the next level, the slats are attached horizontally. The formed space should remain empty, as it will serve as ventilation.

That's it, the facade of the house made of gas silicate blocks is thermally insulated and ready for subsequent cladding.

Video - Thermal insulation of gas silicate walls

The popularity of houses made of gas silicate blocks is explained by their high performance characteristics: low price, large volume of blocks and speed of construction. To increase protective properties buildings made of gas silicate require insulation and waterproofing from the outside. When finishing blocks with brick, insulating materials are laid between the gas silicate and brick layers. Let's consider how best to insulate a house from gas silicate from the outside, what thermal insulation materials and how.

External thermal insulation of the house

Gas silicate is a porous building material made from quartz sand, white lime, aluminum powder and water. The porous structure is formed due to the technology of foaming the material. Porosity is a parameter that makes it inert to external temperatures. Air layers trapped in the pores prevent cold air from entering the room.

A properly insulated house retains more than 50% of the heat lost if it is not insulated or the thermal insulation is laid in violation of the technology

In what cases is insulation necessary?

Gas silicate materials themselves have good thermal insulation properties. Considering this circumstance, the question arises: is it necessary to insulate a house made of gas silicate blocks? According to current standards, under certain conditions, this is an urgent need. Insulation will be needed when the walls are made of blocks no more than 300 mm thick. When the masonry thickness is 400 - 500 mm or more, thermal insulation is not required.

For blocks with a thickness of 300 mm or less, a thermal insulation layer will be required

One more circumstance should be taken into account. If installation is carried out using special glue, a tight fit of the blocks is ensured, in which the total area of ​​cold bridges is significantly reduced. If you use cement mortar instead of glue, the seams will be loose, letting heat out and cold into the middle of the building. Such buildings will require insulation. The need for thermal insulation also depends on the climate zone.

Specifics of insulating walls made of gas silicate

Insulation of a house made of gas silicate blocks is carried out from the outside. The blocks retain heat, are not afraid of temperature changes, but are characterized by high hygroscopicity. Therefore, the insulation must be protected from the negative effects of the external environment. With external insulation, indoor space is saved.

Due to the shift of the dew point into the depth of the material, porous blocks do not freeze. If work is carried out in violation of technology, moisture that destroys the structure will settle on the walls. With proper installation of thermal insulation, you can significantly save on heating costs.

When choosing insulation technology, the following factors are taken into account:

• number of storeys of the future house;
• number of window openings and glazing method;
• general structure design and utilities.

An insufficiently or incorrectly insulated house made of gas silicate loses more than half of the heat.

What materials are used for thermal insulation?

To insulate a house made of gas silicate blocks from the outside, different materials are used. Most often, mineral wool slabs, extruded polystyrene foam and plaster facade systems are used for these purposes. Polystyrene foam and rolled mineral wool are used less frequently. In the past few years, aesthetically pleasing ones with excellent thermal insulation characteristics, thermal panels.

Thermal insulation with mineral wool

Vapor-permeable gas silicate is recommended to be insulated with materials that allow steam to pass through. Mineral wool meets this requirement; it will protect the walls, extend their service life and eliminate problems during construction. internal thermal insulation. When using vapor-proof material, ventilation will be required. Insulation with mineral wool will also provide additional sound insulation and protect the walls from fire.

Basalt wool is a high-quality and reliable insulation obtained from rock

Thermal insulation work with mineral wool is carried out in several stages:

• installation of vertical sheathing on the facade;
• laying water vapor barrier;
• installation of mineral wool, after which the material needs some time to stand;
• laying the second layer of water vapor barrier;
• installation of reinforcing mesh;
• applying primer and plaster or other finishing materials;
• painting after the plaster layer has completely dried.

The gap between the insulation boards should not exceed 5 mm to prevent cracks from forming.

Mineral wool between layers of water vapor barrier

A level is used to level the slabs when laying the first row. The slabs are laid in the form of brickwork so that the seams do not overlap. To fix it on the wall, use the adhesive indicated on the package. Additionally, at the joints and in the middle of the slab, the insulation is fixed with dowels. Mineral wool absorbs moisture; installing a double-sided vapor barrier will protect against its penetration. The walls can be sheathed with siding on top of the insulation.

For external insulation of gas silicate houses with mineral wool, high-quality dense basalt wool is chosen, since the low density of the insulation will eventually lead to caking and sliding down. The guides should be located at a distance from each other that will be 1-1.5 cm less than the thickness of the slab. This is necessary so that the heat insulator tightly fills the frame. Vapor barrier film laid with an overlap of 15-20 cm.

Basalt wool is a moisture-resistant insulation that can be used under siding

Expanded polystyrene is a white insulating material, 98% consisting of air filling the cells of foamed polystyrene. This is a good heat insulator at a minimal price. It is characterized by durability, fire safety, environmental friendliness and high energy saving rates. A polystyrene sheet 3 cm thick is equivalent to 5.5 cm of mineral wool.

This is what insulation with polystyrene foam boards looks like in cross-section

When using polystyrene foam as insulation, additional vapor barrier is not required. Expanded polystyrene boards are not afraid of moisture and are attached using special glue. For additional fastening of the insulation, disc dowels are used. Plaster is applied over the foam or the façade is covered with siding.

Important! When using construction foam, you should take into account its low mechanical strength. Foam boards cannot withstand heavy loads.

The seams between the plates are sealed with polyurethane foam. Covering with siding or plastering with façade putty will protect not only polystyrene foam, but also polyurethane foam from direct impact sun rays.

Extruded polystyrene foam has advantages over ordinary polystyrene foam as better quality and more reliable

Thermal insulation work is carried out in the following sequence:

• Using glue, the slabs are mounted on blocks and left for a day;
• dowels are driven into the corners and middle of the sheets;
• a reinforcing mesh is attached over the sheets;
• the surface is plastered and then painted or covered with siding.

To ensure that the masonry is level, use a level. For better fit Using glue, the slabs are lightly pressed against the wall. There is no need for gaps between the slabs; the seams of each row do not need to match. High-quality reinforcement begins with strengthening the corners of the building, then the entire surface is strengthened from top to bottom.

Pay attention! The thickness of expanded polystyrene for insulating gas silicate blocks is calculated taking into account the climate zone.

Insulation using thermal panels

Thermal panels are a system consisting of insulation, facing tiles and moisture-resistant boards. The insulation can be polystyrene foam or mineral wool, a moisture-resistant board is a structural layer, and facing tiles replace putty and painting at the final stage. The use of thermal panels simplifies the process.

A house insulated with thermal panels does not require additional cladding

How to insulate a gas silicate house from the outside with thermal panels?

• Installation is carried out on a pre-prepared sheathing made of profiles or timber, thanks to which a ventilation gap is formed. The metal lathing is made of galvanized steel. The design consists of U-shaped profiles, hangers and L-shaped strips. To attach the sheathing to the wall you will need a hammer drill, a screwdriver, an angle grinder, a level, self-tapping screws and dowels.
• Upon completion of installation, insulation is laid, then thermal panels are screwed to the profiles.

This method of insulation is simple and does not take much time. Thermal panels reliably protect gas silicate walls from mechanical damage, cold and moisture. Manufactured with decorative finishing like brick, porcelain stoneware or natural stone.

Video: proper insulation of a house made of gas silicate

If you are planning to build a house from gas silicate blocks, remember that if the material thickness is 300 mm or less, thermal insulation will be required. Insulation work, subject to the recommendations of specialists, can be done independently. This will take more time and effort, but you will gain invaluable experience. If you have time and desire to master the basics new profession no, contact the professionals.