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Gas silicate blocks are a very popular material among builders. Their performance characteristics are simply remarkable. Walls are not made from them using cement mortar, but using special glue. Of course, the box will be reliable only if a high-quality fastening compound is used. We’ll talk further about which glue to choose for gas silicate blocks.

What properties should a masonry mixture have?

First of all, the glue must have the following properties:

moisture resistance;

frost resistance;

high degree of plasticity;

good adhesiveness.

In order for the laying to be carried out comfortably, this type of glue should also not set too quickly. In this case, the master, if necessary, will be able to correct the position of the already laid block. It is believed that glue for gas silicate blocks should not harden for at least 10-15 minutes. However, of course, a composition that takes too long to set cannot be considered high quality. The optimal hardening time is considered to be 3-4 hours.

Experts advise purchasing glue and gas silicate blocks included. In this case, the composition will be most suitable. However, it often happens that manufacturers of gas silicate blocks unjustifiably increase the cost of glue. Therefore, many owners of suburban areas who decide to build houses from foamed concrete prefer to purchase the fastening composition separately. When purchasing such a mixture, you should first of all pay attention to the manufacturer’s brand. This significantly increases the chances of acquiring a high-quality composition with good performance and performance characteristics.

Popular manufacturers

If you are wondering which adhesive to choose for gas silicate blocks, you should consider purchasing the following brands of material:

"Prestige".

"Unis Uniblock".

“Win-160.”

"Bonolit".

"Zabudova."

All these compositions are environmentally friendly and have a high degree of plasticity. It is about them that there are the best reviews on the Internet.

Prestige brand adhesives

The main advantage of the compositions of this brand is considered to be quick preparation. Prestige glue can be used for laying not only blocks, but also cellular slabs. This brand of product is inexpensive. For a kg bag you will have to pay about 140 rubles.

Composition of "Unix Uniblock"

This is perhaps the most popular adhesive for gas silicate blocks today. “Which one to choose the most best composition? - specialists usually do not have such a question. This mixture has just a lot of advantages:

excellent thermal insulation properties, as close as possible to the characteristics of the foam concrete materials themselves;

moisture resistance and frost resistance;

ease of use;

environmental safety.

This type of glue costs about 200 rubles per bag.

Aeroc mixtures

The main advantages of the glue from this manufacturer include a high degree of strength. Most often it is used for thin-walled masonry. The advantages of this option are also frost resistance, moisture resistance and vapor permeability. The thickness of the joints in the masonry when using this glue can be 1-3 mm, which completely eliminates the occurrence of cold bridges. A bag of such glue costs about 250 rubles. In terms of performance characteristics, this is probably best glue for gas silicate blocks at the moment.

Composition "Bonolit"

The main advantage of this glue is its environmental friendliness. There are absolutely no impurities harmful to health in its composition. Its performance characteristics are also simply remarkable. And it costs a little less than adhesives from most other popular manufacturers - about 180 rubles per bag.

Remedy "Zabudova"

This glue has such advantages as ease of use and ease of application. Glue "Zabudova" is the most cheap option mixtures of all gas silicate blocks intended for laying. Those who want to choose good quality adhesive for gas silicate blocks and save money should consider purchasing this particular option. A 25 kg bag of this manufacturer’s composition costs only 120 rubles.

Best glue to use in winter

Next, let's look at which glue to choose for gas silicate blocks if the walls will be laid in winter. For the construction of houses made of foam concrete in the cold season, almost all of the options described above can be used. However, when choosing the most suitable composition In the store you should ask for the option with special additives (winter). Such compositions cost a little more than summer ones.

A very popular product intended for winter is, for example, special variety"Bonolit". Also, during the cold season, masonry workers often use winter glue for the KSZ gas silicate block, produced by the Kostroma Silicate Plant. Adhesives designed for masonry in cold weather are also quite popular among builders:

How to prepare glue correctly

So, what kind of glue to buy for gas silicate blocks - we’ve sorted that out for you. Next, let's see how to properly prepare the selected composition. When mixing adhesives intended for fastening gas silicate blocks in masonry, mandatory The following recommendations should be followed:

The dry mixture must be added to the water, and not vice versa.

Kneading should be done with a drill with a special attachment. In this case, the glue will be as homogeneous as possible, and therefore of high quality.

After the first kneading, the composition should be kept for 5 minutes.

The finished glue should be used within a maximum of 2 hours.

When preparing glue, it is important to strictly follow the proportions specified in the instructions. Too much water in the mixture significantly impairs its performance. During the production process, the finished glue should be stirred periodically to maintain concentration. When preparing the solution, use a powerful drill. You can take any water.

How to check the quality of glue

Finding out how good a composition a particular company offers when purchasing is, of course, quite difficult. However, it is still possible to determine which mixture is best suited for masonry. To do this, you just need to buy a little of each of the adhesives. Next, they should be diluted according to the instructions in identical containers. After the glue has dried, the resulting solid material must be weighed. The lightest glue can be considered the best. The lower the weight of the material, the lower its degree of thermal conductivity.

If desired, you can also check the strength of the composition and its adhesive qualities. To do this, you just need to glue two blocks together, wait a while and suddenly throw them on the ground. If they come apart along the seam, then you should look for another glue.

Well, now you know which glue to choose for gas silicate blocks is best in a given case. When purchasing, you should first pay attention to the manufacturer's brand. If the laying will be carried out in the cold season, you should also look for the “winter” mark on the packaging.

Designed specifically for the installation of walls made of gas silicate building blocks.

Features of adhesives for gas silicate blocks

Adhesives for gas silicate blocks are a type of adhesives for foam blocks, which are produced on the basis of cement, sand, modifiers and plasticizers to impart certain characteristics. The main feature of the adhesive is its thin-layer application, which makes it possible to minimize “cold bridges” in the masonry without losing adhesion strength.

To minimize glue consumption, use high-quality building blocks with a smooth surface without cracks or gouges. Manufacturers recommend applying glue in a layer of 1-5 mm and strictly following the instructions for preparing the solution. This will ensure that there are no breaks in the adhesive layer, frost resistance and thermal insulation properties masonry

If you start construction in the cold season, use winter modifications of adhesives for gas silicate blocks with antifreeze additives.

It is not recommended to use tile adhesive and conventional masonry mixtures, which have completely different properties, for laying cellular blocks.

High moisture resistance adhesive composition provides protection against moisture penetration and prevents the development of mold and fungi.

Buy glue for gas silicate blocks in Moscow

If you are a fan of energy-saving construction technologies and have chosen warm gas silicate blocks, then for the best result you need to use special adhesives for gas silicate blocks. This will minimize the future heat loss of the house and its heating costs. IN Moscow buy glue for gas silicate blocks Available in our online store with delivery or pickup from the warehouse. We offer prices from the manufacturer, and favorable conditions for wholesale customers.

The rapid development of the building materials market allows you to choose from a rich assortment various materials necessary in construction. Since ancient times, when building a house, important factors influencing this process were environmental friendliness and the possibility of saving heat in the house. To this is usually added the desire to carry out construction at a minimum cost.

Gaining particular popularity among consumers different kinds cellular concrete: foam blocks, gas silicate blocks, foam concrete. First, let's figure out why this material is popular among consumers.

An important factor when choosing cellular concrete is its low thermal conductivity compared to brick. This is possible thanks to its manufacturing technology.

The most common components: sand, water, cement, lime are the raw materials for the production of cellular concrete, but its structure is unusual in the presence of numerous small pores and voids filled with air. Namely, air is the best and natural heat insulator.

Gas silicate blocks are an excellent replacement for brick. Their standard size is 60x30x20 cm, and when using only one such block, a space equal to 18 bricks is closed. The mass of these bricks will be 65 kg, and a gas silicate block with a density of about 600 kg/m³ will be only 23 kg! These blocks, having convenient size for laying and an ideal geometric shape, has greatly supplanted ordinary brick in the construction of buildings and structures.

The consumer justifies his choice in favor of gas silicate blocks due to its special thermal insulation properties. By reducing the funds spent on heating the house, the costs of gas silicate blocks more than pay for themselves.

Features of work

In order to minimize heat loss in the room when working with gas silicate blocks, it is necessary to use aerated concrete glue. Let's determine what the advantage of this glue is.

When using ordinary cement-sand mortar to connect blocks, the thickness of the seam between the blocks turns out to be too wide - about 15-20 mm. Cement-sand mortar, having weak thermal insulation properties, does not allow maximum heat retention in the room, thereby reducing the use of aerated concrete blocks themselves to almost zero.

But it is not possible to reduce the layer of cement-sand mortar to a minimum of 3-4 mm, since the blocks absorb the water contained in the mortar, and therefore the strength of the masonry is lost.

What should be the “correct” glue?

Unlike cement-sand mortar, special glue can significantly reduce the size of the resulting seam - up to 2 mm. However, it's not just about the thickness of the seam.

Certain additives are used in the adhesive for working with gas silicate blocks, which significantly increase its thermal insulation properties.

The question arises: why can there be such a small thickness of masonry when laying gas silicate blocks, because this is impossible when working with brick. This is primarily due to the shape and size of the blocks used; as mentioned above, blocks are made with minimal deviations from perfect shape. Therefore, the use of glue becomes possible.

Let's make a list of the main advantages when using glue when working with gas silicate blocks:

• Cheap glue. Do the math: the consumption of such glue is much less (six times) than sand-cement mortar, and the cost of the glue is only twice as high;
• Absence of “cold bridges”— layers of material with high thermal conductivity, the formation of which leads to an increase in heat loss and a decrease in the uniformity of the masonry;
• Glue durability to the effects of precipitation (rain, frost);
• Strength– compared to the use of cement-sand mortar, the strength of masonry using glue is much higher.

Preparation of adhesive solution

The instructions indicate the ratio of parts of the mixture and water. Prepare the adhesive solution in a regular clean bucket. Following the instructions in the instructions, the mixture is added to the water prepared in a bucket and mixed thoroughly. Mixing is carried out using a drill with a special attachment.

After the first stirring, the solution should settle, then stir again. Having received a homogeneous mass, the solution can be considered ready for use. Since it tends to harden, you should not prepare excessive quantities in advance.

The resulting mixture is applied to the surface of the gas silicate block and leveled using a notched trowel.

Glue selection

When purchasing glue, due to the variety of materials on the market, a logical question arises: which manufacturer should you prefer? Today, the choice of glue is not a problem, since this segment is quite saturated, and you can choose glue from both imported and domestic production.

Let's look at a few worthy of attention types of glue for gas silicate blocks.

• Ytong has proven itself to be excellent. The adhesives of this company are indispensable assistants in house construction;
• Taifun Master - adhesive options for laying gas silicate blocks with excellent characteristics;
• ilmax 2200 is an excellent choice when working with gas silicate blocks; allows you to eliminate defects such as unevenness, chips, potholes.

Gas silicate blocks have many advantages over other building materials, however, when using them, there is also a need for “wet” processes when plastering and puttying. Let's look at how to properly apply plaster with a minimum of time and material loss.

Plastering gas silicate blocks

To plaster a gas silicate block, the following tools are required:

• the rule is for “pulling” the solution between the beacons;
• beacon profiles - used when leveling the wall surface;
• grater – used for grouting the applied layer;
• plumb line – used to determine the geometry of walls to be plastered;
• trowel and ladle - needed for throwing mortar onto the wall surface;
• drill and attachment for it (mixer attachment) – stirring the mixture;
• plastic container - the solution is prepared in it.

Before the process begins, the surface of the wall is cleaned of dirt and dust. To increase the adhesion of the solution, notches are made on the surface of the gas silicate block - the contact area increases plaster mortar with a wall.

Using a plumb line, the evenness of the walls is determined.

Usually plaster compositions They are applied with a thickness of within 2 cm, since with a greater thickness they become free-flowing. If for any reason a greater thickness of the solution is required, then the application is done in several layers.

At internal plastering use gypsum and gypsum-lime mixtures; for external work - cement.

The plaster mixture is prepared in plastic container: the dry mixture is poured with water and stirred with a drill until it reaches a creamy consistency.

Plaster is applied to the wall surface with a ladle or trowel. The lifetime of cement mortar for plastering is about 30 minutes, gypsum mortar is 20 minutes. Therefore, the solution is prepared gradually.

Since gas silicate blocks are afraid of water, it is recommended to use special plaster, which should have the following characteristics:

• adhesion to gas silicate block 0.6 MPa;
• strength after 28 days 20 MPa;
• viability not less than 2 hours;
• thickness of the applied layer is 3-6 mm;
• frost resistance 35 cycles;
• consumption with a layer thickness of 1 mm – 1.3-1.5 kg/m²;
• have water-repellent ability.

Walls made of gas silicate blocks need to be prepared for finishing as follows:

• Before plastering, the wall must be cleaned of dust, drips, stains and debris.
• then the surface must be primed with a deep penetration strengthening mixture.
• To plaster gas silicate blocks, a reinforcing fiberglass mesh must be used, which gives strength to the plaster after it dries.

The building materials market is now developing rapidly, constantly being replenished with new and new commercial products. Each of them has its own characteristics, improved quality and improved structure. So, for example, if previously the walls of a house were built from bricks laid on a heavy cement mortar, and created enormous loads on the foundation, now everything is different. You can build a durable home from lightweight block elements by gluing them together with an adhesive solution. This article will tell you what adhesive for laying gas silicate blocks or other types of block structures is.

Types of blocks used

The construction of a new architectural project invariably entails the selection of the necessary building materials. For a long period of time, brick remained the main element of construction, but now it is used less and less. The main reason This is due to the laboriousness of laying bricks. In addition, the price of ceramic analogues of bricks is significantly higher compared to the cost of glue for foam blocks.

Today steel is a worthy replacement for brick building blocks, presented in a wide variety on construction market. Their main varieties are the following:

1. Expanded clay concrete blocks. The material has a number of advantages. It successfully combines qualities such as high strength and low weight. The use of blocks involves a small investment of time to create durable masonry. Expanded clay concrete block elements allow the construction of buildings up to 3 floors high manually, without the use of special equipment.
2. Concrete blocks. This material is rarely used in the construction of residential buildings, since it is characterized by poor thermal insulation properties. However, their frost resistance and strength allow builders to use the material for the construction of buildings of economic importance.
3. Gas silicate blocks. In the construction environment they are also known as cellular concrete. The profitability of their use is due to significant cost savings. The small dimensions of the gas silicate block save useful space.
4. Polystyrene concrete blocks. When creating them, a special substance is added to a regular concrete solution, which helps make the material frost-resistant, has good soundproofing properties, and durable. The low price of polystyrene concrete blocks makes the final cost of construction low. Polystyrene concrete blocks are used in both private and industrial construction.
5. Foam concrete blocks. When carrying out construction using foam concrete blocks, there is no need to use special equipment if the height of the building does not exceed 3 floors. Its application foam concrete blocks found in the field of cottage construction. Their main advantages include environmental safety.

Types of glue for laying blocks

Adhesive for foam concrete and other types of block structures is gaining popularity year after year. IN construction industry it is used more and more often, and the demand for the material is due to many undeniable advantages. First of all, of course, there is a reduction in labor costs, because there is no need to mix a cement-based solution, strictly observe the proportionality of the components, etc. And the question of how to calculate the amount of glue for foam blocks is solved faster and easier.

The basis of any adhesive composition is a cement-sand mixture, as well as various polymer additives that have the properties of structure formation, moisture retention and plasticization. It is not possible to prepare such a solution with your own hands, but manufacturers set a very affordable price for products of this kind in the range of 150-550 rubles for one bag weighing 25 kg. With reasonable material consumption for laying 30 blocks with standard parameters(600*200*300) one bag of dry adhesive mass is used.

A large variety of building blocks have now been invented, and each type requires its own adhesive composition with certain properties.

For foam blocks

Adhesive for foam blocks is a special mixture based on cement and sand, and the structure of these materials is somewhat different from that of the bulk composition used to prepare classic cement mortar. Among the components of the glue for blocks is quartz sand, crushed to the smallest fraction.

Advice! Prepare glue mixture for blocks with the calculation of its production within 2-2.5 hours. After this time, the solution begins to quickly thicken, losing its original properties. Adding water will not correct the situation, leading to a deterioration in the characteristics of the glue.

After applying the adhesive composition, its thickness is minimal due to the absence of coarse components. In addition, the solution quickly gains strength due to the use of high-quality Portland cement in its composition. When laying a foam block on glue or a mortar with an adhesive base, you should know that this material consists of a whole complex of additives that significantly improve it specifications. Among these components there are compounds that retain moisture, increase the moisture resistance of block masonry and prevent the formation of mold. The presence of special additives in the adhesive mortar gives the seams between the blocks greater plasticity than that found in ordinary cement mortar.

Such a property as plasticity reduces the likelihood of deformations in the masonry, the appearance of cracks, distortions and cracks in the wall made of blocks. The inclusion of auxiliary additives by manufacturers in the adhesive composition allows them to obtain frost-resistant adhesive for foam blocks. Its main advantage lies in the fact that winter glue for foam blocks allows installation work even at temperatures as low as -15 ºC.

For ceramic blocks

The use of ceramic blocks for the construction of buildings has recently become more in demand. Ceramic blocks Outwardly they look like bricks, but inside they are empty. They are made from baked clay, and the dimensions of such building materials are significantly larger than those of ordinary bricks. Due to the internal void, the thermal conductivity of the material is reduced, and the thermal insulation properties, on the contrary, are increased.

To ensure that ceramic blocks are laid perfectly, experts recommend using special glue. This solution helps create seams with a thickness of only 2 mm. The composition of the adhesive in its structure, thermal conductivity and density is similar to ceramics, which allows the formation of a uniform heat-insulating plane.

Adhesive for ceramic blocks is made from cement-sand mixture with additives in the form of imported plasticizers. These components are made from organic and mineral raw materials and are characterized by water-repellent properties.

For polystyrene concrete blocks

Polystyrene concrete blocks are among the building materials made of lightweight concrete. They contain mineral compounds organic origin. Main components adhesive solution are water, Portland cement and additives, including small polystyrene foam granules that have a porous structure.

The unique combination of various useful components in the glue gives the finished walls such characteristics as good hydrophobicity, good thermal insulation properties, resistance to rotting, good load-bearing capacity, transmitted and finished walls. This adhesive composition is sold in the form of a dry mixture, and requires mixing the powder with water and thorough stirring before use.

For gas silicate blocks

Glue for cellular blocks, which also has another name - gas silicate, is presented in stores various brands, personifying different manufacturers. Prices for glue for gas silicate blocks vary between 115-280 rubles, but this cost does not always indicate good quality adhesive composition. Sometimes the consumer has to overpay money just for a well-promoted brand. To avoid making a mistake, construction experts advise purchasing from the manufacturer not only the glue itself, but also building blocks of the required variety. According to statistics, the use of gas silicate blocks helps reduce the final cost of construction by about 40%.

Glue for gas silicate blocks has several useful advantages, namely:

• Low cost. Glue consumption for gas silicate blocks is approximately 6 times lower compared to cement-sand mortar, and the cost is only twice as much.
• Resistance of the composition to atmospheric precipitation (snow, wind, rain).
• No cold bridges. There are no layers formed in the material, characterized by high level thermal conductivity, causing a decrease in the uniformity of block masonry.
• High strength. If we compare the glue for gas silicate blocks with the cement-sand mortar mentioned above, it helps to form masonry from blocks of greater strength.

When choosing adhesive for a gas block, you should pay attention to its composition and technical characteristics, because such information will help to create an accurate picture of what components the solution is made of.

This is interesting! Frost-resistant adhesive for gas silicate blocks consists of special substances that allow it to be used even at low temperatures (-15 ºC, and sometimes even -25 ºC) outdoors.

It will be useful to know what the fraction size is bulk materials components included in the solution, at what temperatures the manufacturer recommends using the product, what the recommended layer thickness should be. It is also worth paying attention to the label, which displays useful data on the drying period of the adhesive solution, the amount of adhesive used during the work, etc.

Universal glue

Universal adhesive for blocks of different brands and types allows the consumer to purchase a high-quality dry adhesive mixture at a competitive price, which can later be used both for gluing foam block elements and for fixing aerated concrete, ceramic, and polystyrene concrete blocks to each other. Among the most famous universal adhesive compositions for building blocks are TM Knauf and Varmit adhesives. They are designed to work in winter and summer periods years, are made from environmentally friendly components, are frost-resistant, moisture-resistant and cost-effective.

How to calculate how much glue you will need

Glue consumption when laying foam block walls depends on several factors. The type of block element is important when carrying out calculations. For example, for cellular block You will need more glue, since the material is porous, which means it absorbs moisture well. Also, the level of consumption depends on the brand and manufacturer of the adhesive composition.

In general, the consumption of any type of glue for blocks is more economical compared to a conventional solution of sand and cement. Laying blocks with its use is obtained with thin seams, and accordingly, the consumption of the composition is reduced by about 6 times. Using this modern material as an adhesive for blocks, it makes it possible to achieve a seam thickness of a maximum of 5 mm, and if laying technologies are followed, only 2 mm or even 1 mm. A small seam prevents the development of cold bridges in the walls, and the consequences associated with this unpleasant phenomenon - the appearance of fungus and dampness.

The geometry of the blocks themselves also has a certain influence on the glue consumption. If the building material is uneven, then more adhesive solution will be needed for its installation.

To minimize solution costs, it is important to determine how much glue is needed to lay a cube of foam blocks. Knowing this information, as well as the exact number of block elements, you can easily calculate the amount of dry glue required for construction. According to the standards established in construction, the consumption of aerated concrete adhesive per 1 m 3 is no more than 1.6 kg, provided that the joint is thin 1 mm. However, this condition is met only when ideal flat surface. Sometimes per 1 m 3 building material it takes up to 30 kg of dry adhesive composition. On average per 1 cubic meter. gas blocks, you have to waste 1 bag of adhesive composition weighing 25 kg. But this is only from a theoretical point of view. Often the waste is 1.5 packages of dry weight, or 37 kg. There are several reasons for this:

• You need to know exactly how to lay gas silicate blocks or block structures made of aerated concrete. The experience of the masonry worker has a great influence on the quality of workmanship.
• Surface irregularities increase the consumption of glue for blocks.
• The number of layers of adhesive solution affects its consumption.
• The weather in which the laying of building blocks is carried out.
• The number of rows formed by laying block structures.

Wondering what glue consumption is aerated concrete blocks optimal, you should be aware that it will be smaller when using a fine-grained composition. In this case, the masonry turns out to be thin and as close as possible to the recommended parameters.

Manufacturers of adhesive solutions give different recommendations regarding what the glue consumption for 20*30*60 foam blocks should be.

They concern not only dilution, but also the laying of the composition, as well as the formation of block masonry with its help:

1. First of all, read the instructions from the manufacturer before you start mixing the adhesive solution from the dry mass.
2. Follow the technology for preparing the composition, then the material consumption will be less, and accordingly, the cost of glue for the foam block will be reduced.
3. When laying foam blocks on prepared glue, observe the temperature conditions required by the manufacturer.
4. To maintain the homogeneity of the composition, stir it periodically while laying the blocks.
5. At self-installation blocks for glue and lack of proper experience from the master, it is better to purchase all materials with a reserve.
6. By applying glue to the surface of the block with a notched trowel, you can reduce the consumption of the mixture by an average of 25-30%.
7. It is better to prepare glue from dry mass in a warm room, and then deliver it to the site where the block walls are being erected.

The correct choice and use of glue for blocks allows you to build a high-quality and durable home with good thermal insulation properties.

1. Glue composition
2. Glue consumption
3. Glue storage
4. Manufacturers and price
5. Main characteristics
6. Glue Applying Tool

When choosing adhesive for aerated concrete, you want to know how they differ from each other and whether there are other adhesives. Yes, there are other adhesives (foam, cement mortar) that we wrote about in this article. Well, now specifically about glue, which is very plastic, sets quickly, and also hardens without shrinkage.

Composition of adhesive for aerated concrete

The composition of any cement adhesive for gas blocks includes:

1. Portland cement.
2. Washed and sifted fine sand.
3. Modifiers.
4. Polymer additives.

Portland cement is the main adhesive binder. The finest sand serves as a filler. Modifiers retain moisture. Polymer additives improve the bonding properties of the adhesive and adhesion to aerated concrete.

Glue performance characteristics

When choosing an adhesive, you need to pay attention to its performance characteristics, which can vary as follows:

1. Exposure time – 10-20 minutes.
2. Block adjustment time – 3 -15 minutes.
3. Hardening time – 1-4 hours.
4. Layer thickness – 1-8 mm
5. Operating temperature – from -25°С to +35°С.

It is very important to choose glue according to temperature environment, if the thermometer is below zero, use frost-resistant adhesives. Also try to choose glue with the minimum recommended application thickness.

Advice! To reduce glue consumption, try to cook small portions, precisely designed for several gas blocks.

For laying aerated concrete they also use:

1. Special glue;
2. cement-sand mortar;
3. polyurethane foam adhesive.

Polyurethane adhesive foam

Adhesive foam for aerated concrete masonry is a fairly new material that has not been tested by time, and that is why it does not inspire confidence in many. In addition, the question of the environmental friendliness of this foam arises. Not all foam is suitable for construction load-bearing walls, although some manufacturers have created such an option.

If we compare the consumption of foam and regular glue, they are approximately equal. It is believed that foam seams are 30% warmer than conventional adhesive ones. In terms of price/consumption ratio it is approximately the same as glue.

Testing glue and foam for aerated concrete

Disadvantages of laying aerated concrete on cement mortar

1. Thick seams 8-15 mm;
2. High consumption;
3. Cold bridges at the seams;
4. Mix the solution for a long time;
5. Difficulties when laying in frost;

Typically, glue calculations are made based on cubic meters of aerated concrete. Manufacturers write that the consumption is about 25 kg of dry mixture per cubic meter, but in practice the consumption is higher and amounts to 35-38 kg, that is, exactly one and a half bags of dry mixture.

Such calculations are suitable for gas blocks of any thickness; this is how the total area of ​​​​the applied surface of the blocks in a cube is calculated.

The glue consumption is greatly influenced by the geometry of the blocks; the smoother the blocks, the better. You also need to take into account the glue for the reinforcement in every third row.

Glue can be applied different instruments, for example, a trowel paired with notched trowel, or a toothed bucket, or a carriage.

The carriage for aerated concrete is professional tool, which will greatly speed up the work. The carriage is designed in such a way that the thickness of the glue applied to it is always the same, and the special container with glue is very easy to refill. The cost of the carriage is about 1000 rubles. Carriages come in different sizes, for different gas blocks.

Storage and use of glue

Adhesive for aerated concrete should be stored in a heated room with low humidity. Add exactly as much water to the dry mixture as written on the package. It is advisable not to add too much cold water, since it will not set well, the water should be warmer than +10. Before applying glue, the blocks must be cleaned of dirt, dust and anything unnecessary. It's quite simple.