how best to glue? Instruction + Photo and Video

how best to glue? Instruction + Photo and Video Foam adhesive for aerated concrete: consumption per m3, material features. In order to fix building materials, they use not only standard fasteners that are known to everyone (screws, nails and other types of products in this category), but also all kinds of solutions, adhesives and mixtures. Their selection is carried out based on the characteristics of the raw materials used and the scope of operation.

As for aerated concrete, it was no exception and also requires a reliable and high-quality adhesive for installation.

General information

Technological features

how best to glue? Instruction + Photo and Video The material that is used to erect the walls of the structure must necessarily have high performance characteristics, as this will directly affect the quality of the entire building.

As for aerated concrete blocks, the durability and reliability during installation and use in the future depends on the adhesive composition, which will play the role of a fixing element of the structure.

Such material as gas blocks has become quite popular recently. This trend is due to the fact that the material has enough advantages over other building materials. For laying aerated concrete, it is recommended by experts to use glue-foam for aerated concrete and abandon standard cement-sand mortars.

Interestingly, that the adhesive composition helps to create a small in thickness and strong joint seam, and the glue for blocks itself is most often sold as a dry mix that can be used for internal , and for outdoor use.

Among the main areas of use of the composition, we highlight the following:

  • Leveling the surface of the walls.
  • Laying blocks made of aerated concrete, aerated concrete, cinder block or brick.
  • Laying of tiles.

As for the positive individual properties of the use of adhesive masonry mixture for aerated concrete blocks, we note the following nuances:

  • High-level plasticity of the composition.
  • Small joint thickness compared to standard cement mortar.

  • Excellent adhesion to building material.
  • Material does not shrink after curing.
  • There are also frost-resistant mixtures among the different types of glue.
  • The components of these products are water-retaining, which excludes any possibility of fungus, dampness and mold on the material.
  • Due to the fact that there are no "cold bridges", the level of thermal insulation of the building becomes higher.

  • The adhesive composition hardens in a short time.
  • The masonry is aesthetically pleasing due to its low layer thickness and wide range of colors.
  • Due to the low consumption of the composition in comparison with the cement-sand mortar, the price for work when using adhesive foam for laying aerated concrete will be lower.
  • Products help increase the strength of the entire structure.

But there is a drawback, though it is the only one - you should adhere to the correct geometry of the building blocks.

The adhesive composition has the following main characteristics:

  • Full hardening occurs after 2 hours.
  • The mixture is 95% moisture resistant.
  • In the filler the grain size is 0.68 mm.
  • Allowed block correction time is no more than 180 seconds.


Glue for aerated concrete has several important components:

  • Sand.
  • Portland cement is a binder.
  • Modifier - is responsible for retaining moisture inside the composition, thereby eliminating cracking of the connecting joints that are located between the blocks of aerated concrete.


At the moment in the construction market there are two types of adhesive composition for use in the construction of aerated concrete. The material is classified by color, as well as by the permissible temperature range of use:

  • White s glue.

    Its second name is summer composition, since it is recommended to use it only in the warm season. Among the advantages of the material, we note the color, which is the same as that of autoclaved concrete blocks. By creating masonry for this type of glue, you can save on interior decoration, since at the end of the work the base acquires a light color, so there is no urgent need to perform additional processing of the seams.

  • Gray polyurethane foam adhesive for aerated concrete is intended for use in the cold season, in particular, in winter. But these products are quite versatile, so if necessary, you can use gray glue at any time of the year.

    The main feature of the material is the presence of antifreeze components, thanks to which the mixture is resistant to low temperatures.

Please note, that this product can be used at almost any temperature, as long as it is not below -10 degrees. When laying blocks in winter, the structure can be additionally protected with a tarpaulin from external factors. In addition, it is important to monitor the temperature of the composition so that it does not become negative.

Real professionals noted several useful tips regarding the use of mixtures with a frost-resistant component:

  • The entire cooked volume should be worked out in half an hour.

  • Do not carry out work if it snows / rains.
  • Aerated concrete blocks should never be frozen or wet.
  • Dilute and store the solution in a warm room.

Release form, external signs

Glue for aerated concrete block (both normal and frost-resistant) is sold in a dry, undiluted form. The package is a bag weighing 25 kg.

Such packaging is quite convenient for both use and transportation, since the purchased goods can be transported even in an ordinary passenger car and not resort to the services of carriers with large vehicles.

In addition to dry mixes, there is glue-foam on sale, which we talked about earlier, which is also great for aerated concrete blocks. These products are produced in cylinders, which greatly simplifies application to the base. Polyurethane is used as the base for the foam. According to experts, such products are remarkable in that their consumption is low, and the fixing strength is excellent.

In addition, polyurethane is distinguished by such quality as resistance to negative temperatures.

Important! Although this glue composition has many positive points, we also note a drawback, namely that the glue is sensitive to sunlight - when the composition comes into contact with ultraviolet rays, the applied material may begin to deteriorate. For this reason, consider this feature when choosing products.

Review of the best manufacturers of glue-foam

Among the huge assortment of different types of glue-foam for aerated concrete masonry from foreign and domestic manufacturers, I would like to highlight those products that years managed to prove itself only from the best sides.

  • how best to glue? Instruction + Photo and Video Knauf.

  • "Moment".
  • Volma.
  • Ceresite CT21.
  • Kreisel 125.
  • AEROC.

  • Веtolit.
  • YТОNG.

Cerisite was able to prove itself both for internal and external work with gas blocks. The mixture contains a little cement, as well as high quality synthetic and organic fillers. It is interesting that KNAUF offers customers both universal and special mixtures for aerated concrete blocks.

The products are designed in such a way that they can be used for cellular building materials.

A compound called Kreisel 125 can be used for aerated concrete, aerated concrete, and even expanded polystyrene blocks. The composition "MOMENT" stood out among its analogues, as it has high adhesion to building blocks. The products themselves are non-toxic, so they can be used for interior and exterior decoration. AEROS produces aerated concrete glue that can be used both in summer and winter.

Betolit is exactly the product that appeared on the construction market not so long ago, but even now experts single out it as the best among many, because it contains antifreeze additives. A kind of adhesive composition "VOLMA" is presented as a frost-resistant composition, which has an excellent level of adhesion to porous-type building materials.

YТОNG - this mixture is very often used for laying blocks due to its advantages, namely, the strength of the joint, but such glue is considered quite expensive compared to similar compositions. In addition, according to reviews of some buyers, its consumption is more than written in the consumption rate.

Recommendations for choosing

When choosing an adhesive composition for aerated concrete or any other composition, you should first familiarize yourself with the characteristics of all types.

It will be better to pay attention to such qualities of the material on which the reliability of the masonry will depend:

  • Consumption of adhesive-foam for aerated concrete per m 3 and m 2 .
  • Filler grain fraction.
  • Setting time.
  • Time for masonry correction.
  • Temperature range at which the material can be used.

With the combination of all the parameters of the glue described above, you get the most accurate idea of ​​the product, starting with the specifics of making the mixture and ending with the technology of laying blocks on the composition. It will not be superfluous to pay attention to which manufacturer you buy the mixture from - it would be better that the adhesive mixture and aerated concrete blocks were from the same manufacturer.

Interesting, that the experiments and studies carried out have proven that there is practically no difference in the mixtures, since they have the same effectiveness indicators.


To calculate how much adhesive will be used for masonry, consider the following factors:

  • Dimensions of building material.
  • Defects in geometry.

  • Block surface state.
  • Specialist skills.

To calculate the dry powder flow rate, use the following formula:

L + HL * H * d * 1. 4 = P, where

  • P is the amount of glue per m 3 .
  • L - length of one block.

  • d - seam thickness.
  • Н - height of one block.

According to the standard for 1 m 3 leaving a bag of mixture, i.e. 25 kg.

In order to avoid overruns, strictly follow the instructions for diluting the composition. Also pay attention to the fact that the mixture will need to be gradually introduced into the water, and not vice versa, as many do. The specified consumption rate is based on the assumption that the thickness of the adhesive layer will not be more than 0.3 cm.

Features of use

To perform as efficiently as possible aerated concrete blocks for glue, you will need the following tools:

  • how best to glue? Instruction + Photo and Video A container in which the mixture and water will be mixed .


  • Measuring container for adding powder.
  • Construction mixer or drill with attachment.
  • Application of the manufactured composition is carried out using a notched trowel or carriage.

The dry powder is diluted in such proportions that 5 to 5.5 liters of water are used per 25 kg of dry mix. It must be warm, but not more than +60 degrees. After mixing in a container, a homogeneous mass will turn out - try to mix everything so that there are no clots that will negatively affect the adhesion when applying the composition. The finished product can be used within a few hours, so make the composition in small portions.

Before you start working with glue, you should take care of the cleanliness of the blocks - remove dust and other types of dirt from them. The thickness of the layer of glue applied to the gas block should not be more than 0.4 cm. Excess, which sometimes begins to protrude at the edges, should be quickly removed, otherwise later you will need to cut them off - and this is already a risk of damaging the blocks. The alignment of the geometry of the masonry is carried out using a simple method - tapping on the top with a rubber mallet, which will contribute to high-quality adhesion of the composition.

Important! When working with mixtures, do not forget about personal protective measures - work on the manufacture and processing of glue should be carried out in gloves and goggles. Sometimes you might even need a respirator.

Expert advice

When laying aerated concrete, professionals advise taking into account external factors, for example, temperature and humidity. Such nuances can have a big impact on how the mixture will set with the material. In addition, the speed and time of solidification will depend on them.

For example, if the level of humidity is increased, this can adversely affect the speed of solidification of the composition, so work in snow or rain does not need to be performed. At too high a temperature, the composition will harden many times faster, which is why after a while the seam may crack. In winter, it will take longer to cure.

Experience shows that the ideal temperature of an already diluted glue solution is +10 degrees. In addition, the time for applying glue to the block should not be more than 10 minutes, so a certain skill is required for such work.

For information on how to properly knead the adhesive composition, see the tutorial video.