For laying gas silicate blocks, special glue or ordinary glue can be used building mixture... According to experts, it is best to use glue for the construction of external walls.

It is best to use special glue for laying gas silicate blocks.

The use of special glue for masonry has the following advantages:

Adhesive for gas silicate blocks allows you to connect elements with a masonry joint thickness (2-10 mm).

• cement-sand mortar is much more expensive than glue. The consumption of the adhesive is six times less, and its price is only two to three times higher;
• the use of fine-grained glue completely eliminates the appearance of "cold bridges" (an interlayer of material with high thermal conductivity, which leads to a significant decrease in the homogeneity of the entire masonry and a significant increase in heat loss);
• using glue, you can lay walls from aerated concrete, gas silicate blocks, shaped bricks and other foam silicate elements. The adhesive makes it possible to connect masonry elements with a masonry joint thickness (2-10 mm). It can be used to align horizontal and vertical surface, while the layer thickness can reach 5 mm;
• adhesive for has excellent thermal insulation properties, high adhesion, good strength, excellent plasticity;
• if necessary, after laying the gas silicate block, it is allowed to correct its position within 10-15 minutes;
• the glue is quite easy to prepare and apply, which makes this material very convenient to use.

Adhesive composition

Adhesive for a gas silicate block is a dry adhesive mixture of cement with small additives and fillers in the form of water-retaining, plasticizing, air-repelling substances. These additives increase the strength, frost resistance, water resistance and other parameters of the glue.

Why is glue for gas silicate block better than cement and sand mortar?

All elements that make up the block glue have increased strength, frost resistance and water resistance.

There are opposite opinions among the builders. Some argue that glue is absolutely not difficult, while others argue the opposite: in order to lay blocks with glue, competent bricklayers are needed. The situation is further complicated by the fact that there are regions for which it is absolutely not common to find specialists for such work in which it will be quite problematic to find. But, according to experts, a layman is also capable of laying blocks. To do this, you just need to carefully study the topic of performing construction work using gas silicate and foam concrete blocks, and then clearly follow the instructions studied.

A distinctive feature of the adhesive mixture for gas silicate and foam concrete blocks is the presence of a special additive that prevents the blocks from quickly absorbing moisture from the adhesive mixture. This additive retains moisture in the adhesive solution, which makes it possible to reliably glue the gas silicate blocks.

Adhesive selection

Of course, the most reliable way is to purchase glue from a direct block manufacturer. But very often its cost is unreasonably high. As a rule, the price tags for such a product are wound several times.

Experts say that any glue that is intended for outdoor work can be suitable for the construction of a private house using gas silicate blocks.

Preparation of the mixture

In order to prepare the glue, you need to add the dry mixture to a building bucket with a small amount of water, while stirring constantly. Stir again after 7-10 minutes.

Dry adhesive mixture for gas silicate and foam concrete block mixed with water using a construction mixer or a drill with special nozzle... In the absence of a mixer, it should be noted that the higher the power of the drill, the better the adhesive mix will mix. You can use any water, the water consumption is indicated on the package of the dry mix.

So, fill the building bucket with required amount water. While stirring constantly, gradually add the adhesive dry mix. After about 7-10 minutes after complete dissolution, re-mix the adhesive mixture.

To maintain the required consistency of the glue during construction work, it is necessary to stir it periodically.

There is no one-size-fits-all recipe for properly preparing glue. Each brand and each manufacturer has its own recipe for the preparation of an adhesive solution. Before purchasing, it should be remembered that the quality of the glue preparation is directly dependent on the amount of water added to the solution and the dry mixture is added to the water, and not vice versa.

You should also be aware that an overdose of water significantly impairs the characteristics of the adhesive mixture. Therefore, before preparing a working mixture, you need to carefully study the instructions for its preparation.

Very often, some home craftsmen ask the question: what glue to use when laying blocks in winter? Experts say that in winter time years, when the air temperature reaches -15 ° C, you need to use frost-resistant glue, which includes antifreeze additives, as evidenced by the inscription on the packaging of the dry mix.

Blocks laying order

The blocks themselves are laid 15 minutes after the working surface is prepared.

First of all, if necessary, you need to prepare work surface... It must be firm, dry and free of foreign material. Soot, dust, oil and loose elements must be removed. Significant surface irregularities must be leveled; for this purpose, glue for a gas silicate and foam concrete block can also be used.

So, on a previously prepared working surface, apply a layer of adhesive mixture using a trowel, then level it with a notched trowel. must be installed no later than 15 minutes after you have applied the glue to the work surface. You can adjust the position of the block within 10-15 minutes after you have laid it. The setting time of the glue at an air and base temperature from -15 to + 25 ° C is 2 days, and the adhesive solution gains full strength after 72 hours.

Correct laying of the block involves applying glue to the horizontal surface of the already laid out bottom row and to the vertical part of the previous block. If it is necessary to lay the additional sawn-off block, it must be coated with glue on both sides.

The correct procedure for applying the glue: on the horizontal surface of the already laid out bottom row and on the vertical part of the previous block.

Adhesive for gas silicate and foam concrete blocks can significantly reduce the consumption of adhesive solution, due to its special composition, which allows you to lay blocks with seams of 2-3 mm. Of course, the consumption of glue primarily depends on the quality of the blocks used. When using blocks with a perfectly flat surface, the consumption of adhesive will be approximately 20 kg / m³ with a masonry layer thickness of 2 mm. Well, and, accordingly, if there is a need to lay blocks with a thicker layer, then the amount of glue will be increased. Experts say that it is always necessary to purchase a glue dry mixture with a certain margin.

Features of use

When using glue for laying gas silicate and foam concrete blocks, it should be borne in mind that only the second row of blocks is laid on the glue. The first row must be laid on the cement mortar without fail. This is done in order to somehow smooth out the existing unevenness of the foundation surface.

Cold bridges appear due to a decrease in the thermal conductivity of a building during its operation.

If you plan to lay the gas silicate blocks in one row, then it is imperative to use glue. Since it has the same density as gas silicate. By laying gas silicate and aerated concrete parts on a cement mortar, which has a density of about 2000 kg / cm², you end up with "cold bridges" in the form of masonry joints. The consequence of the formation of "cold bridges" will be a significant decrease in the thermal conductivity of the structure during its operation. Based on this, experts who have experience in using glue for, argue that the most practical way laying such blocks - in 2 rows (20 cm each).

It must be remembered that only the second row of blocks is put on the glue, and the first one is put on the cement mortar.

When performing masonry work, external factors should be taken into account, which play enough important role... In particular, this refers to the air temperature and humidity in the room. For example, a decrease in the room temperature, as a rule, entails a significant increase in the setting time of the adhesive. Conversely, an increase in temperature dramatically decreases the setting time. In addition, shrinkage cracks can form due to the room temperature. In rooms with high humidity, drying of dry adhesive mixtures is significantly slowed down. And in rooms with insufficient humidity, due to the tremendous setting speed, microcracks appear in the masonry seams. So, if you do not want to get an extra headache, keep an eye on the humidity and temperature in the room.

The more the adhesive solution costs, the more professionalism is required to use it. A good adhesive mixture must be correctly (thinly) placed, in otherwise using it will cost you a pretty penny.

And for such work, you will need a certain skill, dexterity and a fairly even foam concrete or gas silicate block! It should be borne in mind that expensive mixtures are not designed for thick masonry layers, they will simply crack and burst. If everything listed above is absent, then the masonry must be carried out with ordinary mortar made of cement and sand.

It is necessary, and rightly so! But this is not always possible. The reason lies in the lack of experienced specialists who could provide a masonry joint of 2-3 mm. Not every skilled bricklayer is capable of doing this kind of work. Proceeding from this, when hiring bricklayers, immediately negotiate this condition with them.

In the construction of buildings made of porous concrete, glue for gas silicate blocks is in demand, which is released by the mass competitive advantages compared to classic cement mortar. The product is a universal mixture for the highest quality bonding of aerated and foam concrete slabs, ceramic blocks and brickwork.

The composition of the glue for gas silicate includes the following components:

• a binder base in the form of high-quality Portland cement;
• fine sand;
• polymer additives;
• modifying inclusions.

Polymer components are designed to ensure the plasticity of the mass and improve the adhesive properties of the solution. Modifiers help to retain internal moisture, which prevents seams from cracking.

High traction properties are key features adhesives... They also note a low level of thermal conductivity of the product, which is due to the absence of voids in the seams.

Which adhesive is best for silicate: selection criteria

When choosing a binding material for laying porous blocks, it is recommended to be guided by several criteria:

• reputation of the manufacturer. Renowned suppliers of construction resources value their own reputation and carefully control the quality of the materials produced. If confused by the high cost of the product famous brand, remember the proverb "the cheapskate pays twice." To buy branded products by favorable prices, it is worth using the services of branded salons and participating in company promotions;
• storage conditions and packaging. The dry adhesive concentrate is stored in a dry ventilated room. Factors such as high humidity surroundings or damage to the packaging indicates poor product quality. You should not buy a mixture for laying gas silicate by weight, as this is fraught with low quality material;
• it is worth giving preference to the products of the manufacturer, which makes both blocks of porous concrete and glue for masonry;
• before buying a mixture for laying gas silicate, it is necessary to calculate the consumption of material.

The main parameter when calculating the consumption of the solution per 1 m³ of the base is the thickness of the bonding layer. With a layer thickness of no more than 3 mm per 1 m³ of surface, 8-9 kg of working composition is required.

Advantages and disadvantages

Adhesive for masonry of gas silicate blocks is characterized by high performance characteristics and is appreciated for its ease of use. Key advantages of building material:

• an increased level of adhesion and excellent indicators of plasticity;
• resistance to moisture and low temperatures;
• non-shrinking adhesive material and high setting speed.

The products are of interest for their budgetary cost and economical consumption. Although the universal dry concentrate costs twice as much as the classic cement-sand mortar, the consumption of glue for gas silicate blocks is 5 times less: the mass is applied minimum thickness layer not exceeding 2-3 mm. It also contributes to:

• an increase in the strength of the structure, since the minimum thickness of the seams ensures the solidity of the structure;
• improving the thermal insulation of the building by reducing heat loss through the seams, since the effect of cold bridges is leveled.

In addition, due to the minimum thickness of the seams, the laying of aerated blocks is smooth and beautiful.

The presence of water-retaining components in the adhesive eliminates the formation of mold between the blocks of aerated concrete, which has a positive effect on operational characteristics structures.

The disadvantages of glue for gas silicate include exactingness to the evenness of the treated surface and high prices for products, although due to the economy of consumption, the high cost of building materials is leveled.

Types of mixtures for aerated concrete masonry and application features

There are seasonal varieties of dry adhesive concentrates on the market based on white and gray Portland cement, as well as compositions in the format of foam in cylinders:

1. White version of the building resource - summer glue for gas silicate - provides for use in the warm season. The composition owes this color to the base of white Portland cement. The attractive appearance of the bonding solution determines the demand for internal works, which makes it possible to save on finishing.
2. Gray glue is considered winter glue, although it universal option mixtures for aerated concrete masonry in any season. The composition has anti-freeze additives and is intended for use at temperatures in a wide range of up to -10 ° C.

According to experts, for maximum effect frost-resistant mortar is recommended to be used at temperature ranges from + 5 ° C to -15 ° C, this guarantees the absence of errors and cracks in the joints.

The process of drying out the masonry at an elevated environment temperature mode is fraught with the risk of microcracks in the bonding layer, and as a result, the thermal conductivity characteristics of aerated concrete deteriorate.

Aerated concrete blocks are known to be inert to changes in ambient temperature. In this case, an important role is played by correct technology applying the adhesive by strictly following the manufacturer's instructions.

• a heated room should be used for storing bags with dry concentrate;
• preparation of the solution is carried out in a warm room, the water temperature for diluting the dry mixture should be at least + 20 ° C;
• working solution temperature - not lower than + 10 ° C;
• the ready-made solution is used for its intended purpose within half an hour.

Freezing of moisture is fraught with a deterioration in the quality of the seam, therefore, during winter work, the aerated concrete masonry should be covered with a tarpaulin.

Foam adhesive for gas silicate - innovative solution in this segment. The building resources market offers an adhesive composition for porous concrete blocks in the format of foam in cylinders, for which a special device is used in the form of a construction gun.

Popular adhesive mixtures

When deciding which glue for gas silicate blocks to choose, it is worth studying the features of current proposals.

• Aerostone is a product of the Dmitrovsky aerated concrete product plant. Mix on cement base with polymer additives. The product is presented in winter and summer versions.

• Thermocube is an adhesive mixture for indoor and outdoor use, designed for thin-joint masonry of walls and partitions based on groove and non-groove gas silicate blocks. The building material is distinguished by high qualities of strength, frost resistance and ductility. Provides economical consumption.
• Ilmax2200 - glue for masonry blocks made of porous concrete, including gas silicate, aerated concrete, expanded clay concrete slabs and others wall panels... The frost resistance of the product is 75 cycles, the operating temperature ranges from -30 ° C to + 70 ° C, the temperature for laying blocks varies from + 5 ° C to +25 ° C. The ready-made solution is used within 4 hours.
• Ceresit is perhaps one of the most popular construction brands, a supplier of high-quality mixes for work in various categories. Ceresit CT21 glue is made on the basis of cement; mineral fillers and organic modifiers are included as additives. The product is used for thin-layer masonry of gas silicate wall blocks and other types of aerated concrete panels.
• Knauf is a gypsum-based adhesive that provides strong adhesion to the surface. The products of this manufacturer are in demand due to their competitive quality, although they are sold in an expensive segment. The environmentally friendly Knauf Perlfix adhesive mixtures are easy to apply and allow for quick alignment of blocks.
• IVSILBlock - the mixture is used for laying grooved and ordinary aerated concrete blocks. Polymer inclusions increase adhesion, and modifying additives impart plasticity to the binder base. The position of the blocks when laying with this mortar can be adjusted within 25 minutes, which is considered a competitive advantage of the material.
• Aeroc is a product of an aerated concrete manufacturing enterprise from St. Petersburg, occupying a leading position in the domestic market of building resources.
• "Zabudova" is one of best adhesives for gas silicate blocks. Products are valued for high rates when applied in winter at a relatively low cost. The composition perfectly manifests itself at ambient temperatures down to -15 ° C, is easy to mix and apply, consumption is more than economical, the seams are not subject to atmospheric influences.
• Unic Uniblock - the brand manufactures high-quality gas silicate blocks and mortars for masonry, the products are sold in the middle segment.
• Bonolit, a dry concentrate for gluing gas silicate, deserves attention for its absolute environmental friendliness of the composition, does not have toxic impurities, and is in demand both in external and internal works.

• "Prestige" - the mixture is used for masonry of all types of porous concrete blocks, it is distinguished by high frost resistance due to the composition with modifiers.
• "Pobedit" is a multicomponent cement-based adhesive with quartz sand and polymers, its composition is completely identical aerated concrete blocks and is able to adhere to the surface with the highest quality, forming a monolithic composition.
• "EK Chemical" - a mixture intended for thick-layer masonry, suitable for work in any season. In addition to the construction of walls and partitions from blocks based on aerated concrete, the composition can be used during installation ceramic tiles and leveling wall surfaces.

Glue mixture solution preparation technology

The preparation of the working solution is carried out according to the instructions of the manufacturer of the dry concentrate. The general steps and principles for preparing an adhesive mixture include the following points:

• to prepare the solution, use a container of the appropriate volume and a drill with a mixer;
• measure the required amount of dry mixture and water, as indicated in the manufacturer's instructions. As a rule, the proportions are on average 1: 0.22, that is, 220 g of water is taken for 1 kg of dry concentrate;
• the range of water temperature for the solution is from +15 to + 60 ° C;
• knead the mass until smooth, then allow the solution to settle for 10-15 minutes and mix thoroughly again.

The solution is mixed in portions in accordance with the intensity of work on laying aerated concrete. The service life of the working mixture is about 3-4 hours, but this figure may vary depending on the brand, working conditions and other design factors. It is not allowed to add water to the finished solution, while the glue should be periodically stirred during operation.

It should be borne in mind that the consumption of glue for gas silicate depends on a number of factors, including:

• block geometry and surface defects;
• the presence of reinforcing elements;
• characteristics of the tool for applying the bonding agent;
• temperature and concentration of the solution;
• weather conditions and qualifications of the master.

The formula for the consumption of the adhesive solution looks like this: S = [(l + h) / l * h] * b 1.4, where:

• S - consumption of 1 kg of the mixture per 1 m³ of the base;
• l, h - dimensions of length and height in m;
• b - seam thickness in mm;
• 1.4 - conventional value of the consumption of dry concentrate in kg / m² with a thickness of the bonding layer of 1 mm.

In order to carry out the construction of walls made of porous concrete as efficiently as possible, it is necessary to use adhesive mixtures taking into account their purpose: for indoor or outdoor work, for laying gas silicate with positive or negative temperatures surroundings. It is also worth paying attention to the setting speed of the working solution, this parameter varies from 5 to 25 minutes, depending on the brand of product.

At the same time, the minimum curing time is adhesive base in a block construction is 24 hours, and for the final result a period of at least three days is required after installation.

Gas silicate blocks are a structural and heat-insulating material with a cellular structure. They are obtained from a mixture of quartz sand and lime, in addition, with the addition of a small amount of cement. Therefore, glue for gas silicate blocks is necessary for the construction of walls, as well as any other structures that have a seam thickness of 2 to 10 mm. It is also suitable for leveling vertical or horizontal surfaces.

Such glue is a glue-like dry mixture, it consists of cement, various additives and fine filler. The additives have water-retaining and plasticizing properties. With their help, strength, frost resistance and moisture resistance are significantly increased. These qualities are very important, since construction is often carried out in unfavorable climatic conditions.

High-quality gas silicate glue has excellent thermal insulation properties, incredibly durable, has high adhesion and is easy to apply. It can be used to connect not only gas silicate blocks, but other aerated concrete materials.

Types and brands

It is divided into two main types - summer and winter.

Winter glue can be used at temperatures from +5 to -10 degrees for indoor and outdoor use. It contains special antifreeze additives. A snowflake is painted on the package of this glue.

• Zabudova's glue is the most popular of frost-resistant mixtures... In addition to their excellent technical characteristics it adheres perfectly to any surface and is very easy to use. It costs about 115 rubles for 25 kg.
• Prestige and Bonolit. The second, among other things, is absolutely non-toxic and environmentally friendly. The price of glue for gas silicate blocks of the Prestige brand is about 140 rubles per 25 kg. Bonolit - 220 rubles.

The most common summer mixture is Insi brand glue. It can be used at temperatures from +10 to +25 degrees for masonry walls and various partitions. It is economical, comfortable and has excellent water repellency. Price from 185 rubles for 25 kg.

Method of preparation and application

To properly prepare the glue, you need sturdy dishes, a plastic bucket is ideal. It must be poured into clean water and then add the dry mixture. You need to perform the actions in this order, and not vice versa, you also cannot pour out the entire mixture at once, this should be done gradually. The water needs to be constantly mixed, a drill with a special attachment - a mixer - will help a lot.

Consumption of glue approx. 1 kg per 0.20 l of water. But the consumption of the finished solution per 1 sq. M. is about 10 kg. Do not immediately dilute too much of the mixture, as after 80 minutes it will harden and become unusable. Work with the solution is carried out at any time of the year, but it is worth considering that the temperature should be at least -15 degrees. Please note that this instruction is not universal, on packages different brands the method of preparation and use is described in detail.

For laying gas silicate products, you will need tools such as a smooth trowel or trowel, and for leveling, a spatula.

The glue used for gas silicate should resemble sour cream in its consistency. It is applied using a trowel, carriage or a special bucket with a curved edge. After it is applied, it is immediately leveled with a spatula. After laying the first layer, the surface of the blocks must be smoothed with a plane. After 10 minutes, the glue sets, but it dries completely only after 72 hours.

Why is glue better than mortar?

Faced with for the first time construction works, many site owners do not understand why builders choose glue for laying gas silicate blocks instead of mortar?

When using the solution, you may encounter the following problems:

• gaps may appear between the blocks;
• moisture will penetrate deep into the wall, into further wall grows overgrown with mold and fungus;
• after the layer has completely dried, contact between the plates disappears, the strength of the structure is significantly reduced.

Advantages of glue

• it is applied in very thin layers and is economically consumed;
• contains special components, thanks to which the blocks quickly set;
• withstands any temperature extremes;
• contains high quality water-repellent substances that do not allow moisture to penetrate into the walls.

Gas silicate blocks are widespread. The motives are clear: low price on the material, high speed of construction, as well as relatively low weight, which in turn makes it possible to abandon deep foundations.

However, gas silicate itself is a porous material, which makes it colder and reduces the thermal efficiency of the building. The heat is escaped through the many small holes in the block. It is these features that should be taken into account when choosing masonry glue.

For gas silicate blocks, glue based on sand, cement, plasticizers of organic and mineral origin is used. The thickness of the joints and the consumption of glue will depend on the manufacturer and the elements that make up the glue.

Composition and properties of glue for gas silicate blocks

The composition of the glue for gas silicate blocks necessarily includes:

• fine-grained sand;
• a binder base in the form of high-quality Portland cement;
• modifying inclusions.

Polymer additives provide plasticity and adhesive properties of the solution. Modifying inclusions retain internal moisture, which protects the seams. The solution ensures high adhesion of the blocks, is not absorbed by them and reduces their thermal conductivity.

Such properties of the composition are among the main features of the glue for gas silicate.

Which glue is best for gas silicate blocks

• Manufacturer. Well-known suppliers value their reputation and carefully monitor the quality of their products.
• Storage and packaging. An important condition for glue - dry, ventilated room. If you are not sure how exactly the product is stored or the packaging is damaged, it is better to refuse this. Also, experts do not recommend taking dry mix by weight.
• Advance paynemt. Before buying glue for gas silicate blocks, it is recommended to make a preliminary calculation of the consumption of materials, which will allow you to more accurately determine your needs and save money by not allowing you to buy too much.

Pros and cons of gas silicate glue

The advantages of glue for laying blocks include:

• increased level of adhesion;
• resistance to low temperatures and moisture;
• the adhesive does not shrink and also has a high setting speed.

It should also be noted that the products are of interest for the final budget cost. Though adhesive solution and costs twice as much as usual cement mortar, the consumption of glue is 4-5 times less (the solution is applied with a minimum thickness of 2-3 cm).

This also has its advantages:

• increasing the strength of the structure;
• increase in thermal insulation;
• Due to the small thickness of the seams, the laying of gas silicate blocks is smooth and beautiful.

The disadvantages of gas silicate glue include increased requirements for evenness and the surface to be treated.

Where to buy glue for gas silicate blocks

You can buy glue for gas silicate blocks in our online store at a price of 144 rubles per 25 kg bag.

In our store, there are different companies and packaging of glue, so you can calculate the required volume and choose the option that is suitable for your purposes.

The rapid development of the building materials market makes it possible to make a choice in the richest assortment various materials required in construction. Since olden times, when building a house, environmental friendliness and the ability to save heat in the house were important factors affecting this process. To this is usually added the desire to carry out construction at a minimum cost.

Especially popular with the consumer are acquiring different kinds aerated concrete: foam blocks, gas silicate blocks, foam concrete. First, let's figure out why this material is popular with the consumer.

An important factor when choosing aerated concrete is its low thermal conductivity compared to brick. This is possible due to the technology of its manufacture.

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

Gas silicate blocks are an excellent substitute for bricks. 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 equal to 65 kg, and the gas silicate block with a density of about 600 kg / m³ - only 23 kg! These blocks, having a convenient size for stacking and ideal geometric shape, strongly displaced ordinary brick in the construction of buildings and structures.

The consumer justifies his choice in favor of gas silicate blocks due to their special thermal insulation properties. By reducing the funds spent on heating the house, the cost of gas silicate blocks is more than compensated for.

Feature 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 decide what is the advantage of this glue.

When using ordinary cement-sand mortar to join blocks, the thickness of the seam between the blocks is too wide - about 15-20 mm. Cement-sand mortar, possessing weak heat-insulating properties, does not allow maximum preservation of heat in the room, thereby reducing the use of aerated concrete blocks themselves practically to zero.

But it is also 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 solution, and therefore the masonry strength is lost.

What should be the "correct" glue

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

In the glue for working with gas silicate blocks, certain additives are used that significantly increase its thermal insulation properties.

The question arises: why, when laying gas silicate blocks, there can be such a small thickness of the masonry, because this is impossible when working with bricks. This is primarily due to the shape and size of the blocks used; as mentioned above, the 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 in working with gas silicate blocks:

• Cheapness of glue... Calculate: the consumption of such glue is much less (six times) than that of sand-cement mortar, and the cost of the glue is only twice as high;
• Absence of "cold bridges"- interlayers of material with high thermal conductivity, the formation of which leads to an increase in heat loss and a decrease in the homogeneity of the masonry;
• Adhesive durability to the effects of atmospheric precipitation (rain, frost);
• Strength- in comparison with the use of cement-sand mortar, the strength of the masonry with the use of glue is much higher.

Preparation of adhesive solution

The instructions indicate the ratio of parts of the mixture and water. An adhesive solution is prepared in an ordinary clean bucket. Following the advice of 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 solidify, you should not harvest in advance an excessive amount.

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

Adhesive selection

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

Consider several noteworthy types of glue for gas silicate blocks.

• Ytong has proven itself well. The adhesives of this company are irreplaceable helpers in building a house;
• Taifun Master - variants of adhesives 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 irregularities, chips, potholes.

Gas silicate blocks have many advantages over others building materials, however, when using them, there is also a need for "wet" processes when plastering and puttying. Let's consider how to apply plaster correctly with a minimum of time and material losses.

Gas silicate blocks plaster

The following tools are required for plastering the gas silicate block:

• the rule is to "pull together" the solution between the beacons;
• beacon profiles - used when leveling the wall surface;
• grater - serves when grouting the applied layer;
• plumb line - used to determine the geometry of the plastered walls;
• trowel and bucket - needed to throw mortar onto the wall surface;
• drill and attachment to it (mixer attachment) - stirring the mixture;
• plastic container - the solution is prepared in it.

Before starting the process, 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 - an increase in the contact area occurs plaster mortar with a wall.

With the help of a plumb line, the evenness of the walls is determined.

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

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

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

The plaster is applied to the wall surface with a bucket or trowel. The life of the cement mortar for plastering is about 30 minutes, for gypsum - 20 minutes. Therefore, the preparation of the solution is carried out gradually.

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

• adhesion to gas silicate block 0.6 MPa;
• strength after 28 days 20 MPa;
• viability not less than 2 hours;
• the 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;
• be water-repellent.

The walls of gas silicate blocks must be prepared for finishing as follows:

• before plastering, the wall must be free of dust, streaks, stains and debris.
• then the surface must be primed with a deep penetration hardening mixture.
• for plastering gas silicate blocks, a reinforcing fiberglass mesh must be used, which gives strength to the plaster after it dries.