In the process of building a new house or renovating used housing, foam block partitions are often built. Masonry technology is available even for a beginner, if you first study it step by step, delve into all the nuances, get to know foam concrete and its properties better.

Foam concrete has become popular in the manufacture of interior partitions due to a successful combination of technical characteristics.

• Good soundproof properties. D600 foam concrete with a thickness of 10 cm creates a barrier to noise of 45 dB. This is quite enough: according to SNiP 2-12-17, the minimum sound insulation index for internal partitions is 41 dB.
• Low thermal conductivity. Foam concrete with a density of D600 retains heat 5 times better than sand-lime brick.
• Light weight. Porous material is the best option for interior partitions, as it exerts minimal pressure on the base.
• Choice of thickness. This parameter varies between 50-150 mm.
• Precise geometry. The threaded foam block has fairly even edges - they are easy to plaster and putty.
• Affordable price.

Before starting work, take into account the shortcomings of the material. Partitions made of foam concrete blocks cannot withstand the weight of heavy shelves and wall cabinets (self-tapping screws simply fly out of the wall under load). Foam concrete strongly absorbs primer, putty and plaster mixtures, so their consumption will be increased. Partitions can also be erected from aerated concrete, more on this in.

Block laying technology

Interroom partitions made of foam concrete are equipped both during the construction and during the repair of an already functioning house. The masonry is made using a foam block for the construction of partitions with a density of D600, with a standard height and length of 300x600 mm. The thickness is selected depending on the functions of the future wall. Partition for zoning the room allows a size of 50 or 75 mm. The capital partition with the installation of a door or window is laid out from foam blocks with a thickness of at least 100-150 mm.

In order for laying to be carried out quickly and without difficulty, materials and tools should be prepared in advance:

• special glue for connecting foam blocks to each other;
• polyurethane foam, deep penetration primer;
• container for glue;
• drill - for drilling holes for communications, as well as mixing;
• drills and nozzle-mixer;
• long building level, tape measure, paint cord;
• metal profile for mounting drywall, dowel-nails, perforator;
• hacksaw - to cut the block to the desired size;
• reciprocating electric saw - for making openings;
• putty knife.

Instructions for building a partition in steps

Do-it-yourself installation of the wall is carried out in stages.

1. Preparation of the base. Of course, foam blocks cannot be installed on parquet, tiles or wooden floors. In this case, there will be no adhesion to the base. A full foundation is not required, since the partitions and walls made of foam concrete are not load-bearing. A full-fledged foundation for the structure is not required - it is enough to make an ordinary cement screed 7-10 cm thick from B20 cement, level it using a level, and let it dry completely.

2. Outline marking. The distances indicated in the project from existing structures to the future partition are first set aside on the floor plane, strictly maintaining the angles. Then, using a tape measure, a building level, a metal profile or a paint cord, mark the walls and ceiling.

3. Installation of a temporary frame. For this purpose, a profile is used, which is fixed with dowel-nails to the floor, walls and ceiling.

4. Preparation of walls and ceiling. This work is necessary to improve their adhesion to the adhesive. Dust is removed with an industrial vacuum cleaner, a wide strip is impregnated with a primer, parallel to the profiles fixed to the ceiling and walls.

5. Glue preparation. It is stirred in a bucket using a drill with a special mixer attachment. The consumption of the adhesive mixture is approximately 15 kg per cubic meter of wall.

6. Laying foam blocks. Step by step, this work is performed in the following order. An adhesive solution is applied to the base and wall with a spatula with a strip that is slightly higher and longer than the block, and its thickness is 3-4 mm. The foam block is placed in the right place, tapped with a mallet, the correct installation is checked with the help of a fishing line stretched between the vertical racks of the frame. Next, the glue is applied to the plane of the bottom row and the end of the previous block. Each next row is shifted by 0.5 of the length of the foam block so that the partition is stronger.

7. Dismantling the frame. 2 days after the laying of the last row has ended and the glue has seized, the auxiliary frame is dismantled. The gap between the upper plane and the ceiling on both sides of the wall is blown out with mounting foam. Thus, elastic seams are created (necessarily continuous) - they serve to compensate for the thermal expansion of the foam block partition.

In conclusion, a doorway is made with their own hands. Its standard height is 207 cm from the floor, the width is 8 cm greater than the width of the door leaf. The verticality of the marked lines is controlled, an opening is cut out with a reciprocating saw. Its upper part is reinforced with steel rods with a diameter of 16 mm. The work is done as follows: they cut parallel grooves (10 cm long) on ​​each side, knock out foam concrete from them, insert rods and fix them with mounting wedges.

When is reinforcement needed?

When making a partition on your own, you should strengthen it in certain places with reinforcement.

1. Bundle with main walls and piers. Before laying begins, pins or large nails are hammered into the adjacent walls at the junction with the future partition, which play the role of connecting elements. Preliminarily, holes 50 mm deep are drilled in the wall, into which pieces of reinforcement lubricated with an adhesive solution are inserted. Holes are simply cut out in the foam blocks, or the blocks are laid directly on the protruding ends of the reinforcement. In the future, the rods are hammered every few rows of masonry.

2. Ligaments between partitions. The connecting elements are mounted for those structures that will then be tied to the partition being constructed.

3. Reinforcement masonry. For this, fiberglass mesh is used. It must be laid in the three lower and upper rows. If the masonry has a large height, its middle part is also reinforced.

Sometimes you hear that the laying of foam blocks can be carried out without installing a metal structure from profiles. However, the frame makes it easier for beginners building a wall with their own hands for the first time. They won't have to worry about aligning the foam blocks with the marked line - they just need to control the middle with the aforementioned fishing line. There are other nuances to avoid common mistakes.

1. The masonry turned out to be fragile.

With the help of a special construction adhesive, foam concrete sets well and holds securely. Adhesive compositions are produced in the form of dry mixes. Usually, instructions are attached to them, according to which the powder is independently diluted with water.

It is allowed to work only with freshly prepared glue: otherwise it loses its qualities, and the partition loses its strength.

2. The wall has shrunk, the finish has cracked.

To prevent this from happening, be sure to buy autoclaved cut foam blocks. In addition, during installation they are ground. The scheme of actions is as follows. The block is placed at a distance of 2 cm from the previous one, and then with a sliding movement it is pulled up and pressed against it, focusing on the bottom row. This squeezes out excess glue.

3. When making a doorway, the cut fragment pressed down on the saw blade.

Sawing an opening in the partition, you first need to drill a series of holes in the foam blocks with a drill. In this case, the lower horizontal cut is made first - in this case, the saw will not jam.

Interior partitions are best plastered with an adhesive mixture, with which the laying was carried out. Then the operations are carried out step by step:

• installation of electrical wiring;
• putty;
• lining or painting.

The cost of foam blocks

The price depends on the brand of products (density), manufacturing technology, and the reputation of the manufacturer. For example, certified autoclaved, steam-dried, cut foam blocks of the D700 brand are 10-15% more expensive than molded and less dense counterparts that do not have a quality certificate. The average cost of material in the metropolitan area is shown in the table.

Cost of work

If a decision is made to involve professionals, it is worthwhile to first clarify what the price of laying interior partitions is. This will allow you to make a general calculation of construction or repair work.

Currently, in Moscow, the average prices vary between 400-500 rubles / m2. Masonry is more expensive, the greater the thickness of the block and the more complex the configuration of the structure.

Until recently, ordinary brick or drywall (a two-meter sheet of durable cardboard with gypsum filling) was commonly used for partitioning. But the brick is too heavy a building material, and it is difficult to deliver it to multi-storey buildings without a freight elevator. And drywall does not have great strength and good sound insulation.

The device of partitions from foam blocks

In recent years, a more modern and practical material has appeared in construction - foam concrete and foam blocks made from it, which are perfect for installing interior partitions. This building material has a whole list of priority qualities, is he:

• relatively light with impressive dimensions;
• has good heat and sound insulation;
• easy to process, malleable for cutting holes, channels for pipes and electrical wiring;
• easy to saw with a hacksaw, ideal for implementing all kinds of design ideas, for creating arches and any configurations;
• has sufficient thickness to form a doorway in the wall;
• has a flat surface and is perfect for any decorative finish, primer, tiling, plastering, wallpapering;
• resistant to the effects of the sun, moisture, temperature extremes and active biochemical substances;
• has an affordable price.

Such excellent characteristics make foam blocks an indispensable building material for organizing partitions in houses, apartments, offices and industrial premises.

The only one flaw foam concrete blocks are not always an ideal shape. Therefore, it is preferable to purchase this material from large manufacturers, where product quality control is more thorough, and the geometric shape of the blocks meets standard standards.

Varieties of foam blocks: their dimensions and thickness

To build a solid partition that will last a long time, you need to understand the varieties of foam blocks. First of all, you need to understand that foam concrete blocks with different densities are used for external and internal walls. For the construction of external walls, foam blocks with a density of at least D 300-500 are used. Internal partitions can be built from less durable foam blocks.

In addition to density, this material is different and by manufacturing method. There are autoclave and non-autoclave methods. The latter is more often used by small enterprises that are not of good quality due to poorly debugged technical control.

The non-autoclave manufacturing method creates non-uniform porosity of the material. As a result, a partition made of such blocks shrinks about 3 millimeters on a 1 meter high wall section. Therefore, a partition made of autoclaved foam blocks will be much stronger.

This material is different by stamping method, it can be cutting or shaping blocks. In the first case, blocks are cut from foam concrete with a special circular saw. The result of this manufacturing method is the geometric evenness of the edges and perfectly matching block sizes.

With the method of manufacturing by molding, liquid foam concrete solidifies in special forms. And although all forms are standard sizes, block sizes may vary. This is the disadvantage of molding.

Therefore, when purchasing material, it will be completely natural to give preference to foam blocks made by cutting.

Separately, it is worth highlighting the issue of the size of foam blocks for partitions. Usually for the construction of interior partitions are used blocks with the following parameters:

• thickness different 50, 75, 100 or 150 mm;
• height and length - standard 300 mm x 600 mm;
• weight depends on thickness and density 5.5 kg - 16.2 kg;
• optimal density D600.

Foam blocks with such parameters are suitable for partitions of any height.

More commonly used blocks 100 mm thick. Despite the small thickness, interior partitions made of foam blocks are durable, with good soundproofing and fire-resistant characteristics.

Tools and materials used for laying foam blocks

Before starting work on the construction of a partition from foam blocks, you need to prepare a set of necessary materials and tools:

• glue for foam blocks at the rate of 15 kg per 1 cu. meter (with a layer of 2 mm);
• cement mortar for laying the lower row;
• mounting foam for foaming the gap between the top row and the ceiling;
• foam gun;
• pins - self-tapping screws, metal embedded pins;
• spatulas and trowel;
• a drill with a mixer for mixing glue and cement mortar, a container for glue;
• a hammer with a rubber overlay for leveling blocks when laying;
• building laser or regular level;
• corner, hacksaw for sawing blocks;
• planer or grater for foam blocks to level the surface before finishing;
• electric cutter or wall chaser for making holes, grooves in the partition;
• large-width brush for sweeping concrete dust from rows before applying adhesive.

After preparing everything necessary for the construction of a wall partition from foam blocks, you can proceed directly to the start of work.

Do-it-yourself step-by-step plan for erecting a partition from foam blocks

How to build a partition from foam blocks? In order for the partition to turn out to be even and of high quality, when building it, it is important to follow the sequence of construction technology and be extremely careful. For a denser laying, the foam blocks should be wetted.

1. Primarily for the strength of the partition being erected, reinforcement pins must be installed in the load-bearing floors at intervals - one pin for 2-3 rows.
2. Draw lines for future masonry on the floor and walls, mark the doorway, if it is planned.
3. Strengthen the metal profile along the applied lines, which will ensure even stacking of the blocks.
4. Before laying out the first row of a partition from foam blocks, it is imperative to clean the base from construction dust and debris, then apply a primer.
5. After the primer dries, you can start diluting the glue, following the instructions. The adhesive must be thick enough so that the mixer, left in it, does not fall, and at the same time liquid enough so that the remaining glue falls off the mixer freely.
6. The first row of blocks along the metal profile strengthened in two ways:

• if the base is concrete, the blocks are laid on a cement mortar;
• on the finished flooring, the blocks are fixed with the help of self-tapping pins.

So, summarize: interroom partitions made of foam blocks are a simple, economical, fast and very convenient way to divide an office, production or living space into separate boxes.

Today foam blocks are a popular material. They are used in the construction of various structures, as well as internal partitions are erected from them.

Why should foam blocks be chosen as the optimal building material for partitions?

To create durable interior walls and partitions, the appropriate building material is required. It must be resistant to various negative influences. Foam blocks can be chosen as the most suitable material.

They have great features:

reliability;

profitability;

masonry speed;

excellent sound insulation;

fire safety;

ubiquitous application;

long service life;

strength;

frost resistance;

environmental friendliness.

The scope of this building material is very wide. Look at the examples in the photo for this article. They are indispensable for the walls of residential buildings and other buildings with various purposes. The material is resistant to direct sunlight and does not change its characteristics even in hot weather.

Do-it-yourself construction of interior partitions

Foam blocks are considered an effective building material. They are used in the construction of interior partitions with their own hands. The optimal dimensions that are used to perform this task are 300x600x80 mm or 300x600x100 mm.

The advantages of using modern foam blocks in the construction of internal walls in a private house or apartment:

The dimensions of the foam blocks significantly reduce construction time.

This building material is easily cut, which makes it possible to obtain unusually shaped structures.

A high degree of sound insulation eliminates the possibility of becoming an unwitting witness to everything that happens in the next room.

Profitable price.

The maximum laying speed is an indisputable advantage of this building material, which allows you to quickly lay out the inner wall yourself. The most optimal value for the thickness of the foam block is 100 mm. Before proceeding with laying, it is required to perform preliminary work: we take a bar or a starting profile in our hands and draw straight lines with their help. See the photo for how to do it.

When choosing block sizes and calculating the required number of pieces, this wall should not be allowed to come into contact with the ceiling.

The left gap of 1 centimeter is subsequently filled with construction foam.

Description of the stages of laying blocks

The first row is laid on a base of concrete or wood. This will take you a little time. As a connecting layer can be used:

gypsum plaster,

cement,

special glue.

Each next row is laid out with the arrangement of vertical seams in a checkerboard pattern. This is easy to do if you buy blocks of different lengths. In this case, those that are shorter should be placed at the beginning of every second row.

Do not forget to fix the laying of the interior partition to the main walls. Use special pins for this, as in the photo.

So that in the future the wall does not stagger, pins must be driven into its base.

When using cement mortar as a base, there is no need for additional fasteners.

What tools might be needed

When working, you will need special tools, as in the photo. To build interior partitions in the house with your own hands, you can not do without:

drills and nozzles;

leveling hammer with rubber head;

building level;

hacksaws and corner;

graters and planer for foam blocks;

wide brush to remove dust.

These tools will allow you to spend building material as economically as possible. To align each laid out row, you need a planer and a grater. After completion of the work, the use of these special tools allows you to process the surface and prepare it for finishing work. The simplicity of the process makes it possible to carry out all construction work in a short time.

At this stage, you have to get rid of the remnants of the solution, as well as dust and dirt. Before proceeding with the final finishing of the interior partition, it must be carefully plastered and puttied. You will see all the stages of the necessary work clearly if you watch the video.

What to look for when buying

When buying foam blocks, be careful, as unscrupulous manufacturers can replace it with more expensive aerated concrete blocks.

In order not to overpay extra money, you need to know how they differ from each other.

Aerated concrete blocks look neater than foam blocks: they have more regular and even edges.

The main difference between these two materials is how they are produced: gas blocks are made by the autoclave method. The material is placed in a special autoclave oven, where it is exposed to high temperature and high pressure for a long time. Foam blocks are made in two possible ways: injection technology and cutting.

The laying of an interroom partition from foam blocks can be done independently. High-quality material allows you to minimize the time for construction. Such a reliable and durable inner wall will serve you for a long time.