How to finish the facade of a house from aerated concrete - we choose building materials for cladding. Economical facade finishing of aerated concrete - personal experience of portal participants The better to finish a house from aerated concrete

The widespread use of aerated concrete blocks is due to their affordable price, lightness and strength. But the problems may be due to the fact that this material does not look very good. A well-executed exterior finish of a house or other building helps to improve the situation.

Peculiarities

Construction of urban and suburban buildings from finished parts of industrial production is becoming more popular year by year. But you should not think that the exterior decoration of the walls of a house made of aerated concrete will adversely affect the overall price of the structure or worsen its practical qualities. As practice shows, it is not at all necessary to make a finishing layer or mount hanging screens that completely mask the unattractive masonry. Of course, all types of finishing materials and elements are selected taking into account the increased permeability of aerated concrete to water vapor and its tendency to absorb water.

Finishing blocks outside, according to experts, does not always require the creation of an insulated layer.

If the used elements are thicker than 40 cm, then in normal climatic conditions of the Russian Federation(except for the northernmost regions), the material itself provides a decent level of thermal protection. Considering that aerated concrete is purchased most often in order to save on construction, any Additional materials and designs should be cheap. Mechanized application of plaster mixtures (if it is decided to use them) is quite possible. For this purpose, both industrial and home-made devices are used.

Advantages and disadvantages

For everyone who wants to save money as much as possible and simplify work, a logical question arises - is it worth finishing aerated concrete or not? In many informational materials, one can find the statement that the decorative layer has a purely aesthetic purpose and there is no practical need for it. But in fact, there is at least one plus - it is necessary to finish aerated concrete because it passes a lot of water vapor. At the same time, the finishing material should be selected exactly with the same level of vapor permeability, which limits the choice. If you violate these rules (do not finish the aerated concrete from the outside or do the coating incorrectly), you may encounter a sharp reduction in its shelf life.

Brick

It is impossible to brick an aerated concrete wall without preparing a mobile sheet, the thickness of which is 4 cm. This sheet will provide a technical gap from the wall to the masonry. Air will begin to circulate in the gap that has arisen, therefore the problem of the different abilities of the two materials to pass steam is automatically solved. Before covering the outside of a private aerated concrete house with brickwork, you need to make sure that the foundation can withstand the increased load. Ideally, such a decorative element should be included in the working draft.

It should be borne in mind that the brick finish:

• increases resistance to water;
• makes the structure stronger;
• very difficult to perform;
• costs a lot of money.

Siding

Sheathing a house with siding can be much faster and cheaper than bricking it. A wide range of color and texture options will undoubtedly delight home owners. Aerated concrete blocks can be completely covered from water penetration, moreover, such a finish is very durable and non-combustible. Siding does not create a significant load on the foundation and is resistant to ultraviolet radiation. It is easy to care for him, to maintain the surface in good condition.

You can often hear that siding does not tolerate mechanical destruction. But this is not too important, because it is easy and quick to replace the affected blocks with completely new ones. Given the relatively low strength, it is worth taking the coating with a margin. And even if the entire installation went well, there is no need to rush to send this stock to the trash. It may turn out that after a few months or years it will no longer be possible to find siding sheets with the same color.

Ventilated facades

Facades with an internal ventilation gap are great for finishing houses made of aerated concrete. If they are carried out in strict accordance with technical rules, it will be possible to provide both a beautiful appearance and reliable protection the main material from the weather. The warm-up speed will increase interior spaces, thermal energy will be distributed more evenly through them. Accordingly, the cost of heating resources will be less. Ventilated facades on aerated concrete can only be insulated with vapor-permeable materials.

In addition to mineral wool, it is necessary to place a membrane that protects against moisture, which must also allow steam to pass through. This solution will ensure the timely removal of condensate to the outside. It is impossible to use expanded polystyrene for insulation, because it will prevent the release of water vapor, and very soon the wall will begin to deteriorate. The use of ventilated facade technology, along with improved thermal protection, will muffle street noise. But this method is unacceptable near water bodies or in areas where there is a lot of precipitation.

The ventilated surface immediately changes the appearance of the building. It can be modified in accordance with any chosen design approach. The facade can last up to 70 years, and the absence of "wet" work allows installation regardless of the weather. Work should be started only after the completion of all internal work that contributes to an increase in moisture concentration.

For fastening a ventilated facade to aerated concrete, use:

• drop-down dowels of spring type;
• dowel-nails nylon universal purpose;
• chemical anchors;
• mechanical anchors.

Tile

Facing gas blocks with clinker tiles is no worse than other finishing options. She gradually pushes the brickwork into the background. It is important to consider that simply applying clinker (gluing to the wall) will not work. Aerated concrete will dry out the adhesive mixture in a matter of weeks, no matter what it is, and after that the tile will begin to crumble to the ground. This cannot be allowed.

The initial layer is applied with reinforcement mesh made of metal or fiberglass. Then you need to put an additional final layer of plaster and level it. Only after complete drying of all plaster can tile be mounted. To do this, use resistant to cold and moisture varieties of glue, create a large seam between the tiles. The minimum gap size is ¼ of the area of ​​the cladding element.

To improve the bond between aerated concrete and ceramic plates, intermediate reinforcement with steel or plastic dowels will help. Ordinary nails or stainless screws can replace them. In all four cases, it is required to drive fasteners into the masonry and mask them in the seams between the parts of the clinker array. Experts believe that you need to do 4 or 5 attachment points per 1 sq. m. Then the lining will hold securely and will not collapse prematurely.

Plaster

The plaster layer can be created not only as a basis for a ventilated facade or clinker tiles. With the proper selection of the mixture and the competent execution of the work, it will become an attractive design solution in itself. It is recommended to use only specialized facade plasters. When working with acrylic compositions, you can count on long-term preservation of useful qualities, but you should beware of open fire (the material can ignite easily).

Absorbing little water and costing relatively inexpensive silicone plaster shows a wide variety of textures, but poor colors. It should not be used where a significant amount of dust and dirt will fall on the walls. The gypsum composition dries quickly and does not shrink, and only one layer is enough for decoration. But we have to reckon with a low level of vapor permeability and with accelerated wetting under the influence of precipitation. In addition, the surface of gypsum is often stained, they will have to be painted over immediately - there are simply no other ways to fight.

Painting

But once in this version, you still have to paint the aerated concrete wall - it is logical to look at the use of paint. paints and varnishes of this kind are divided into two groups: some contain reinforcing fibers and give texture, while others form an attractive relief. Both types of coloring mixtures can be applied to aerated concrete blocks with a simple roller without additional manipulations. The created layer has a matte sheen, the tonality of which is easily adjusted by color additions. Paintwork materials for aerated concrete are guaranteed to work for at least 7 years and will absorb some water.

This solution eliminates the occurrence of cracks, and the developers' refusal to use an organic solvent on water based helps prevent bad odors. Before applying paintwork materials, it is required to remove all dust and smooth out minor defects with a grater. Staining is carried out either immediately or using facade putty (depending on the complexity of the situation).

Criterias of choice

As it is already clear, the external finishing of aerated concrete walls can be performed using a variety of technologies. But the manufacturers of each coating are trying to attract the attention of consumers, telling that they have the best and most reliable, that it is their solution that is ideal for gas blocks.

• sand and concrete plaster;
• Styrofoam;
• expanded polystyrene;
• covering paint forming a film.

Simple black self-tapping screws for fastening the battens under a ventilated facade should not be used. Dowel-nails proved to be much better in practice. They do not form cold bridges and are not subject to the harmful effects of condensing moisture. The installation step is reduced to 0.4 m - this allows you to make the most uniform distribution of the wind shock load. If it is decided to finish the aerated concrete wall with bricks, it will be necessary to provide ventilation in the lower part of the masonry, and also take care of closing them with bars.

For your information: brick is worse than other options, because its use creates an increased load on the foundation.

Even if the masonry runs in ½ brick, a significant mass is still created. You will also have to take care of flexible connections between the main and outer walls. Summing up, we can confidently conclude that the best results are obtained by using a ventilated facade. Only this technology guarantees both external beauty and weather resistance.

When choosing and performing exterior decoration of a house made of aerated concrete blocks, it is worth considering the properties of this material so that the cladding does not contribute to the deterioration of the technical characteristics of this material. Since aerated concrete belongs to the category of cellular lightweight concrete, it has high thermal insulation characteristics, but this material absorbs moisture quite easily, so the exterior finish of the house must reliably protect wall structures from atmospheric moisture and condensation. In our article we will list all the finishes aerated concrete block.

Material Features

When choosing a finish for a house made of aerated concrete, it is worth considering specifications and properties of this material. So, its advantages include the following:

• Insofar as specific gravity aerated concrete is small, when arranging a house, you can get by with a lightweight base. In addition, the laying of wall blocks can be done independently without the use of construction equipment. Due to the low weight, the transportation of this material is facilitated.
• Cellular concrete is an easy-to-work material. Blocks can be cut and drilled with hand tools. Right on the construction site, the block can be given the desired shape. In addition, in an already built building, you can easily ditch the walls for laying communications.
• The high thermal insulation characteristics of the material lead to the fact that a wall with a thickness of 200 mm is equal in thermal conductivity to a brick wall with a thickness of 500 mm.
• Since the structure of the material is porous, a favorable atmosphere for humans is formed in the house due to air microcirculation, humidity is regulated. This property of aerated concrete is very similar to wood.
• The construction of aerated concrete can rightly be considered environmentally friendly housing.

When choosing how to finish a house from aerated concrete blocks, it is worth considering the shortcomings of the material:

• The main disadvantage of this product is increased fragility. The blocks do not tolerate shock loads well, and their compressive strength is low. If the block falls during transportation, it will most likely crack or crack.
• High hygroscopicity contributes to the fact that the material actively absorbs moisture both during direct contact and atmospheric moisture from the air. In this case, the product becomes heavier, its thermal insulation characteristics deteriorate, and strength decreases. A wet block may collapse after freezing. During masonry work, the block quickly absorbs moisture from the solution, which reduces the elasticity of the mixture and makes it difficult to work with it.

Important: as you can see, the shortcomings of this material confirm the fact that the walls of gas blocks are a draft version that needs immediate external and interior decoration. Next, we will look at the most suitable options exterior cladding of aerated concrete walls.

Clinker

Clinker brick is a high-strength material made from special shale clay. The house, lined with clinker tiles, acquires a finished respectable look. The composition of the clinker includes oxide dyes and additives. The mixture is passed through an extruder. Then the flat billet is cut into individual tiles. They are fired in a tunnel kiln at a temperature of 1300°C. As a result, the material acquires the following characteristics:

• high frost resistance;
• excellent fire resistance;
• the product can be given any color and texture;
• the material has high strength;
• tiles are considered environmentally friendly;
• clinker is resistant to sunlight;
• it is a chemically neutral material;
• durability.

Main advantage exterior finish from clinker brick and tiles - a variety of shapes, textures and colors of products. As a result, you will be able to realize any architectural idea in the facade decoration, make columns, decorative elements, arches. From clinker, you can make not only the outer layer of the house, but also a fence, a gazebo, a canopy, a barbecue, a fireplace inside the house.

Tip: if it is very important for you to decorate the facade, then better material than clinker tiles, you will not find.

However, any material has drawbacks and clinker is no exception. Due to the increased density, it has a high thermal conductivity, so it is advisable to additionally insulate the walls of the house before cladding. The second disadvantage is the high price.

There are two ways to clad a house with clinker tiles:

1. If you want to additionally insulate the facade, then first plates of heat-insulating material, such as expanded polystyrene, are attached to the walls. Then a vapor barrier membrane is fixed on top of them. It will protect against moisture and condensation. After that, at a short distance (3-4 cm), clinker brick lining is performed. The cladding layer must be connected to the aerated concrete masonry of the walls by means of anchors, clamps, long nails or dowels with wire. The installation step of these elements is 0.5 m.
2. If the thickness of the walls of aerated concrete is sufficient, then additional insulation is not needed. In this case, the clinker tiles are laid close to the walls. Elements for binding the facing layer to the walls can be laid during execution aerated concrete masonry or install later in the cladding process.

Plaster

If you decide to plaster an aerated concrete house from the outside, then you should know that the finishing process will consist of several stages. The final result depends on the quality of each of them. So, the process of plastering aerated concrete walls includes the following steps:

• First, heat-insulating material (polystyrene or extruded polystyrene foam) is attached to the walls. Usually, a special adhesive composition and dowels with caps are used to fasten the insulation boards. This layer will increase the thermal insulation of the house, protect it from noise and atmospheric moisture.
• After that, using the same glue, a reinforcing fiberglass mesh is attached to the insulation. It is needed to improve the adhesion of the finishing layer with the heat-insulating material.

Attention: when choosing a mesh, you should give preference to products made of chemically neutral material. This will protect the facade from the appearance of traces of rust.

• Now you can begin to perform the finishing plaster layer. For better adhesion, the surface of the previous layer is primed with a special compound. Next, the facade is plastered using a high-quality composition with antiseptic additives. After that, the surface of the walls is painted with facade paints.

Vinyl siding

Such facing material as siding is quite popular. On sale you can find panels for cladding made of different materials(metal, fiber cement, vinyl, wood). Vinyl siding is the most popular because of its reasonable price and ease of processing.

The advantages of this material include the following:

• Affordable price.
• Simplicity and speed of installation.
• Durability.
• Ease of maintenance. The facade can be washed with water from a hose.
• High moisture resistance.
• Resistance to fading, damage by microorganisms and insects.
• Large selection of colors and textures, which allows you to choose the right product. In addition, in the cladding of one house, you can use several colors of the material, which will diversify the facade and give it expressiveness.

However, if you decide to sheathe the house with siding, it is important to follow the rules for installing this product. Otherwise, the panels may move, they may burst or deform. The thing is that the material can expand and contract under the influence of temperature changes. The magnitude of the change in linear dimensions reaches 1%.

Installation of vinyl panels is carried out in the following order:

1. Before sheathing a house of aerated concrete with siding, special brackets must be fixed to the walls. Only panels can be mounted on them.
2. Before installing the guides, the walls of the house must be protected from moisture. To do this, a vapor barrier membrane is attached to them.
3. After that, guide profiles are attached.
4. Then external corners are installed on the corners. vinyl profiles. Special profile components are mounted around windows and doors. A starting profile is fixed along the bottom of the facade, and a finishing bar or an inner corner is fixed along the top of the walls.
5. If the siding length of 3.66 m is not enough to cover one facade in length or height, then a docking profile is additionally used.
6. After that, proceed to the installation of panels.

Attention: to compensate for temperature deformations, the siding is attached with a gap of 1 cm at the ends from the additional profiles. In addition, for free expansion and contraction, the material cannot be tightly screwed to the guides. Self-tapping screws can only be screwed into the center of the oblong hole on the panel.

It is also worth remembering that vinyl siding is not attached close to the facade to ventilate the walls of the building. Be sure to leave a gap of 3-4 cm. If desired, the walls of the house can be insulated. Insulation is laid between the guides of the frame. Then a vapor barrier membrane is attached on top of it and guide profiles again. This is the only way to ensure the necessary ventilation gap.

Brick

Facing a house made of aerated concrete can also be done using facing bricks. This material has an extensive color palette, which will allow you to use a successful combination of two colors for home decoration. For wall cladding, it is better to choose not an ordinary ordinary, but a special finishing brick. It has the correct shape, a smooth surface without defects and a reduced width, which will reduce the load on the foundation. Due to the high density, these products have improved technical characteristics.

For facing the house, you can use silicate or ceramic brick, as well as products obtained by semi-dry hyper-pressing. The latter option is more expensive, but allows you to achieve a better result due to the extensive colors, variety of shapes and textures.

There are two ways to cover aerated concrete walls with facing bricks:

• Close to the walls. In this case, when performing masonry from gas blocks, it is worthwhile to lay the anchor in advance to perform dressing with the facing layer. If desired, you can lay the heat-insulating material between the aerated concrete wall and the facing layer.
• Ventilated facade. This finishing option will not allow the walls of the house to become damp due to the accumulation of condensate in them. In this case, a layer of facing bricks is laid at a small distance (3-4 cm) from the surface of aerated concrete walls or heat-insulating material covered with a vapor barrier membrane.

Types of materials for the exterior of the gas block

Finishing a house made of aerated concrete from the outside does not imply the mandatory application of protective coatings. The contact of unprotected aerated concrete with the atmospheric environment leads to a change in the properties of aerated concrete, the appearance is seriously deteriorated, so I advise you to protect aerated concrete:

• front brick;
• textured vapor-permeable paints;
• siding, ventilated facades;
• special vapor-permeable plaster mixtures that retain the ability of aerated concrete to “breathe” and protect it from moisture.

When choosing the type of finish, you need to know that aerated concrete is perfectly permeable to steam and air. If the finish is not air and vapour-tight, moisture will accumulate between the aerated concrete and the finish. This moisture will intensively destroy the material and the structure itself.

I do not advise protecting aerated concrete with cement-sand mixtures, polystyrene foam boards, film-forming paints or dense adhesives.

Finishing the facade of the gas block with textured special paints on a vapor-permeable putty is a simple and inexpensive way. The cheapest one is the Prospectors paint.

• The paint is diluted with water, thoroughly mixed and applied to the gas block with a roller. It is convenient to change the color of the paint by adding pigments. I do not recommend saving on paint.
• The preparation consists in processing the protruding irregularities with a jointer and grouting the seams.
• I recommend starting painting in a month, after preparing the base, so that the chemical reactions in the materials end.
• If the aerated concrete is of poor quality, there are many chips, irregularities, you can apply a thin layer of vapor-permeable plaster.

IMPORTANT

Finishing walls made of aerated concrete from the outside with sheet materials is a reliable way to protect the building. The house can be sheathed with vinyl siding, clapboard or ceramic, metal sheets, vertical or horizontal installation method.

• Sheathing sheets recommend attaching to the crate.
• Install the crate on nails or expansion anchors. The crate creates a ventilated space of 2...4 cm, extremely useful for removing condensate and additional insulation.
• Vinyl siding is often the best way to protect aerated concrete. Produced in size 385x25.5 cm, thickness 1 mm.

Material Quantity Calculation

Facade thermal panels are a composite of foam plastic, glass wool on extruded polystyrene foam and marble chips on the outer surface.

Thermal panels are light - they do not load the foundation, they are attached to aerated concrete with building glue, they are made of high quality material.

Today, thermal panels are the easiest way to protect aerated concrete and provide additional insulation. The crate is not installed on the wall, you can glue the thermal panels yourself.

Facing brick

The protection of aerated concrete with a face brick must be carried out with a gap of 30 ... 40 ... 50 mm. Brick and aerated concrete walls must be connected with flexible connections. This is usually fiberglass or perforated steel.

In a new masonry, bonds are brought into the seam between the masonry during the masonry itself.

Panels "clinker tiles" - a two-layer composite of polyurethane and German high-quality clinker tiles Stroher, Feldhaus Klinker. Fastened directly to the facade with dowels without preparatory work on aerated concrete. After installation, the seams are stitched.

Tile consumption

Substrate preparation regardless of finish type

I advise you to start the exterior decoration of aerated concrete walls with the preparation of the working surface of the wall. First, close up defects in joints, chips, seams. It's more of a thermal insulation measure. It is useful to apply a “warm seam”, close up voids and seams mounting foam. Putty the seam.

It will be very good if the primer is covered with a deep penetration waterproofing compound, then the fungus is guaranteed not to appear.

Useful information

conclusions

The leader at the lowest cost with a clear advantage are vinyl siding and thermal panels. Protecting an aerated concrete wall with them is two times cheaper than painting or building a brick wall.

German clinker tiles cost twice as much for facing aerated concrete than Brick wall. The manufacturability of siding and thermal panels allows you to work independently.

This is the most optimum material to protect aerated concrete on walls.

The question often encountered at various construction forums - how to finish the facade of a house from aerated concrete, became the reason for collecting information on this topic. Having revised it, we offer edited and specific information, in which we will tell you what this wall building material is, why it must be closed, what materials are used for this, and how they should be laid in order to obtain a high quality end result.

What is aerated concrete

This material belongs to the class artificial stone and a group of cellular concretes. The material is based on cement, sand and special substances that, when interacting with water, emit gas. The latter, inside the mass of the solution, forms bubbles. When dried, a durable stone of a bubbly structure or, as experts say, a cellular structure is obtained.

It is gas bubbles that make aerated concrete light with high thermal insulation characteristics. That is, aerated concrete houses are very warm. And if you correctly approach their construction, taking into account the width of the blocks, then you can not additionally insulate such a building. There is an opinion that aerated concrete absorbs moisture well, under the influence of which it cracks, crumbles and collapses. That is why the facade of houses made of aerated concrete must be finished with materials with higher waterproofing qualities.

Video description

In our video we will talk about Japanese facades. Let's take a closer look at what errors occur during the installation process:

This is incorrect information. In autoclaved aerated concrete, the moisture resistance index does not exceed 20%. In a brick, it is 10-16%, that is, not so much better that one could talk about the low rates of the first. And if you build the roof of the house correctly, creating a good overhang that protects the walls from atmospheric precipitation, then aerated concrete walls can not be finished with anything.

It's just that aerated concrete does not have the most presentable appearance. Therefore, this wall material must be finished. Let's look at the options for finishing the facade of a house made of aerated concrete, what materials are used for this.

Plaster

This is a traditional way to give a house built from different building materials a presentable appearance. This finishing technology is called "wet". And since aerated concrete still has an increased absorption of moisture, ordinary plaster mixtures will not work here. Manufacturers today offer solutions in which special additives are added. They retain moisture on themselves, preventing it from penetrating into aerated concrete blocks.

The process of applying the plaster mixture to the aerated concrete surface is no different from the traditional technology.

The facade of a house built from aerated concrete blocks, cleanse from dust and dirt.

Inflict two layers primers. The first must be dried before applying the second. For this process, special primers for aerated concrete are used.

Installed on the facade surface with self-tapping screws reinforcing mesh made of either fiberglass or polymer. Such meshes are called plaster synthetic. They are sold in rolls or by the yard.

The dry mixture is prepared, that is, it is poured into a container with water, where it is thoroughly mixed.

Apply in an even layer certain thickness.

After drying apply the finish coat are usually dyed.

Note that in addition to ordinary plaster, you can use decorative varieties. The application technology is the same.

On our website you can find contacts construction companies who offer the service. You can directly communicate with representatives by visiting the exhibition of houses "Low-Rise Country".

brick cladding

Facade blocks for exterior decoration of a house on the market are represented by a fairly wide range. The most commonly used material is facing brick. It is lightweight, that is, it does not require a complex base to be built under it, with a smooth front surface, which ensures the presentability of the exterior finish.

Brick cladding is also a "wet" process. Therefore, two different technologies are used for its clack.

Technology #1

For this, a cement mortar is used, in which moisture-retaining additives are added. The lining process itself is carried out according to standard technology. Firstly, for this, even at the stage of foundation construction, a platform is left for laying bricks. That is, the width of the foundation should be greater than the width of the gas blocks by the width of the brick and masonry mortar.

Brickwork is carried out with an offset of half a brick, that is, with a bandage. The main thing is to strictly adhere to the thickness of the seams, which should not exceed 10 mm.

Technology #2

This method is a kind of ventilated facade for a house made of aerated concrete. The essence of the technology lies in the fact that a small gap is left between the cladding and the walls of the building, in which air circulates. It turns out a ventilated layer that removes moist air vapor from the walls of the house, thereby preserving them from the negative effects of moisture.

There are several types of structural elements of a ventilated facade. I.e brickwork, which is lined with a wall, must somehow be attached to this wall. The simplest option is metal brackets, which are driven into aerated concrete blocks at a certain distance from each other, both in height and along the length of the facade. Brickwork is attached to them. More precisely, part of the bracket falls into the seam between the bricks. Therefore, it is very important to correctly install the holding device.

On our site you can find the most popular projects of houses from aerated concrete from construction companies represented at the exhibition of houses Low-Rise Country.

The more brackets, the stronger the connection between the facade and the cladding. As practice shows, in height the holders are installed every 4-5 rows of bricks, along the length of the facade every 1-1.5 m. This is considered sufficient for low-rise construction. If the house is more than two floors, then for a brick ventilated facade, complex base structures are used, which include:

brackets, which are attached to the wall of aerated concrete;

guides installed between the brackets;

horizontal belts for laying bricks.

All elements are made of either galvanized or stainless steel.

There is another option for constructing a ventilated brick facade. Here, the construction of the house and its lining are carried out in parallel. That is, aerated concrete blocks are stacked in the wall and immediately next to the cladding wall. To create a link between two building structures a metal mesh is laid between the assembled blocks. For example, through every third aerated concrete block. The photo below shows the facade decoration in this way.

Wall cladding is not only brick. Aerated concrete blocks can be closed with clinker, ceramic tiles, porcelain stoneware. That is, in this regard, aerated concrete walls are no different from others. The main thing is to use adhesive solutions for aerated concrete.

Ventilated facades

Let's make a reservation right away that a ventilated facade for a private house made of aerated concrete is an ideal finish. To do this, a crate is constructed on the wall, in a different way, a frame. It is assembled either from wooden bars with a section of 40x40 or 50x50 mm, or from galvanized metal profiles, which are used for the installation of gypsum boards. The second option is better, because the metal under the influence of changing humidity and temperature does not warp and does not change its dimensional parameters.

As for the facing material, there is a wide range that the modern market offers. Here are just a few of the most popular options today: lining, siding, block house, decorative slabs of cement mortar, polyvinyl chloride, a mixture of polymers and wood chips. Many manufacturers offer cladding as a set, that is, a crate is also attached to the finishing material. This is very convenient in the sense that there is no need to adjust the frame elements to the dimensions of the facing material.

Cladding assembly technology

The frame is assembled quite simply. In fact, these are guides installed on the wall in a vertical position. The main task of the work manager:

install profiles vertically and in one plane;

installation step is determined by the length of the finishing material, for example, lining and block house have a length of 3 m, siding 1 m.

Important - the cladding elements are joined only on the guides. Fastening is carried out with self-tapping screws or clamps.

For example, how siding is used:

At the very bottom of the crate set start profile, which is attached to the profiles with self-tapping screws. Installation is carried out strictly horizontally.

From the corner of the building to the crate install corner piece, which is also fastened with screws to a profile installed near the corner of the house.

Installing the first siding panel at the bottom of the façade, inserting immediately into the start and corner profiles. Attached with self-tapping screws.

next to him second panel installed. Thus, the bottom row of lining is assembled.

Then they move on to assembly of the second row. The first panel is inserted into the corner profile, and its spike into the groove of the bottom panel. Attached to the frame with self-tapping screws.

The last row may not fit in height. This means that the siding panels will have to be cut to the required size.

At the very top, before installing the last row, they mount finish profile, which will cover the cut edges of the panels. In addition, this element will give the finish completeness.

Video description

The video shows in detail how a house built from aerated concrete blocks was lined with siding:

Facing with decorative panels

This finishing material appeared on the market relatively recently. But he took his place "under the sun" thoroughly. Firstly, decorative facade slabs are a huge variety. Secondly, it is a ventilated facade, with all the ensuing advantages. Thirdly, it is the simplicity of construction, plus the low price of the material.

Manufacturers today offer decorative panels made from different materials and compositions. Here and on a cement basis, and on a polymer, and on a wooden one. Composite materials are very popular, having excellent not only decorative qualities, but also strength characteristics: wear resistance, moisture resistance, frost resistance and others.

The mounting method is exactly the same as for siding. Many manufacturers offer a complete set with a crate and fasteners, as well as additional elements. There are so-called thermal panels on the market. In fact, this is still the same decorative finish, only each of its elements is insulated with heat-insulating material, which is glued to the back of the panels. By the way, this finishing material can be laid in a “wet” way using tile adhesive. The same technology is used here as with ceramic tiles or porcelain stoneware.

flexible stone

This is the most modern version external finishing of houses from aerated concrete. This material got its name due to the fact that it bends well, although the upper front side is a stone veneer or painted sand. It is based on fiberglass, which gives the product a certain strength.

It is very easy to work with this material. The main requirements are a dry surface and a special adhesive composition. We will not tell you how to properly install a flexible stone. Just watch the video.

Video description

The video shows how easy it is to lay a flexible stone:

Conclusion on the topic

So, we figured out the exterior finish of aerated concrete houses: its options, materials, installation and installation technologies. From all of the above, one conclusion can be drawn - the same materials are used in the lining of aerated concrete walls as in the decoration of brick or concrete walls. The only difference, if we talk about "wet" technologies, then here is the use of special masonry and adhesive mortars.

The outer walls of the house are the basis of the entire structure, so they must be made from a reliable foundation. Therefore, they are often erected from aerated concrete, because this material has high strength, wear resistance, only there is one significant drawback - an unpresentable appearance. In addition, it absorbs moisture like a sponge, so over time it begins to crumble, crack and collapse. That is why it needs to be protected. Usually, finishing the facade of a house made of aerated concrete blocks undergoes additional finishing, during which various materials. But initially it is worth considering the main qualities of the materials.

Often, in the construction of houses, cottages, residential buildings, a block of aerated concrete base is used. Aerated concrete is a type of building material, namely a type of artificial stone, which belongs to the cellular type of concrete. It is made from concrete, which is combined with lime and quartz sand. All this is diluted with aluminum blowing agent. The components are diluted with water, after which a reaction is observed that releases hydrogen and foams the cement mass. The finished solution is poured into special forms. After the entire reaction has passed and the solution has completely set, it is divided into blocks and dried in destined for this oven. The result is ready-made aerated concrete for the construction of houses.

Aerated concrete blocks

Houses from these blocks have the following qualities:

• block houses are lightweight, so there is no need to build a massive foundation;
• due to the fact that this material has an optimal ratio of light weight, size during construction, it is not necessary to order additional equipment for lifting loads, which as a result saves money and reduces labor costs;
• the block can be easily cut, sawn, there will be no difficulties in laying the subsystem, communications and other important parts of the house;
• fast construction of buildings from aerated concrete. It will take about 1 month to build one box of a house from this foundation;
• no additional finishing for insulation is required, because aerated concrete has excellent thermal insulation properties. For this reason, houses made of this foundation are always warm and cozy, especially in the cold season.

Options for finishing facades from aerated concrete blocks

However, despite the high quality of aerated concrete, it nevertheless collapses over time due to various negative effects of weather conditions. And the appearance is not always pleasing to the eye. Therefore, you should beautifully decorate the facade of aerated concrete. It can be finished with various materials ranging from brick to ordinary plaster. But in order for the cladding to be able to protect the external walls from negative factors, extend the service life of the building, and also give a presentable appearance, you should carefully familiarize yourself with the features of each material for the facade decoration of aerated concrete buildings.

Brick

Finishing the external walls of an aerated concrete house with bricks greatly improves its appearance, makes it presentable, makes it much more beautiful, brighter. In addition, various color solutions bricks, will allow you to choose the material that will fit perfectly into the style landscape design. But during finishing it is necessary to use not ordinary brick, because it can put additional pressure on the blocks.

In addition, in order for the finish to last for a long period, several important rules must be followed during construction work:

• before installing the brick on the block, it is necessary to prepare the solution. To do this, it is thoroughly mixed, this will help to avoid sedimentation of sand, all components will be distributed evenly. After installation, the brick will grab well both among themselves and with gas blocks;
• the mixture should be spread evenly. This will make the seams stronger;
• to enhance the strength of the entire structure, the size of the seam thickness should be at least 10 mm;
• if mortar gets on the brick during the laying process, it should be removed immediately, otherwise it will dry out and spoil the entire aesthetic appearance of the building.

Siding

When choosing a material for finishing houses from blocks, it is worth choosing siding. This material has good qualities allowing to maintain the quality of the entire structure for a long time. Advantages of siding material:

• the basis of this material is heat-resistant, so this material does not deteriorate as a result of temperature changes, it endures severe frosts or high heat;
• has a high moisture resistance. Rain, snow, hail will not adversely affect this base;
• when finishing the house with this material, a gap remains between the siding facade and the walls, in which an insulating base can be installed.

For insulation, two types of insulation can be used:

• materials with a soft base - various options mineral wool;
• products with a solid base - expanded polystyrene with an extruded base or polystyrene.

In appearance, it turns out to be an ordinary ventilated facade, only, unlike a subsystem with ventilation, it has a reduced cost, and it does not differ in properties. In addition, certain requirements should be observed during installation, since the aerated concrete block has low strength. For this reason, the "frame wall" fasteners need to be further strengthened.

When strengthening, the dowel should burst with a self-tapping screw, for this reason it must be chosen less than the dowel by 1-2 mm. The standard dowel size is about 6 mm. The fixing depth must be at least 50 mm.

Plaster

Aerated concrete walls can be finished with a variety of finishing materials, not only siding, bricks. Plaster is often used for finishing from aerated concrete base. To finish the house, you should not choose ordinary cement mixtures, because the block will immediately absorb all the moisture from them, which as a result will cause the destruction of the material. In addition, after drying, multiple microcracks form on the surface of the plaster. For this reason, you should purchase special mixtures that are used specifically for the gas block. These mixtures are based on additives that prevent the absorption of moisture into the aerated concrete material.

Wall decoration with plaster is carried out sequentially:

• the first step is to prepare the working surface of the walls. It consists in cleaning the surface of dust, excess solution;
• after that, the walls must be primed with a special mixture, which is intended for aerated concrete material;
• the next step is to create a plaster mesh. To do this, you can use a fiberglass or metal type mesh with small cells;
• the mesh is installed to the wall using self-tapping screws;
• the presence of a mesh guarantees high-quality adhesion of the plaster to the wall surface. If it is not installed, then after a while the work will have to be redone again, because the layer of plaster may eventually move away;
• after that, you need to knead the solution. Dry components are poured into the container, water is added to them, everything is mixed;
• after that we proceed to plastering the walls;
• when the entire finishing process is completed, you can proceed to the cladding of the facade. To do this, you can paint it completely or paint individual parts.

Protective painting

After finishing the facade with plaster, it is necessary to paint it. This will give an expressive, bright look to the entire structure. The most economical option would be to use special paints or vapor-permeable plasters.

Features of painting the facade are as follows:

• in order to paint the facade, the plaster should be added desired color. Then the walls must be finished with the resulting mixture;
• if you suddenly didn’t like the color, then you can dilute the mixture with a different color and paint over the facade again;
• the mixture is applied for staining with a special roller or brush;
• if during the coloring there are irregularities, various connecting scars, seams, then they must be carefully rubbed. Further, with the help of a planer, everything should be polished;
• if you are already planning painting in advance, then it is better to purchase an already processed block.

Paint Protection

The final stage after plastering should be done protective covering walls with a special composition. Usually, hydrophobic compounds are used for painting, which contain special water-repellent components. These compounds are called water repellent. But for aerated concrete material there are special compositions. Mixtures that are used for finishing bricks and concrete are not suitable for this material.

Treatment of the painted facade with hydrophobic mixtures:

• hydrophobic mixtures can be applied with a conventional paint brush or roller;
• apply them to the blocks should be a small layer. This layer will be enough to protect the walls from dust sticking, from the effects of various negative precipitation;
• application should be made on the entire surface, including corners and other hard-to-reach places.

Ventilated facades

A ventilated facade is considered the best way to finish walls made of aerated concrete. For wall cladding by this method, a large amount of sheet or linear finishing material is used - siding, wall paneling, block house, porcelain stoneware slabs, sheets of plastic or metal base.

Features of the finish of the ventilated base:

• in order to install such a lining on the block, it is necessary to use a system of guides, if necessary, then a crate is made. This cladding will provide clearance;
• the entire structure is installed using nails, dowel or anchor type fasteners;
• during the finishing of the facade from aerated concrete block, systems with vertical guides with rails from a wooden base are often used. And outside they can be sheathed horizontal materials- clapboard from a wooden base, block house, siding;
• sheet material cladding is usually done in conjunction with a crate, which is nailed to the facade, attached with self-tapping screws;
• the resulting gap between the cladding and the facade is insulated with mineral wool, basalt thermal insulation.

On sale you can find ready-made facade systems made of sheet material. They are already equipped with everything you need. Their high reliability makes it possible to use them for the construction of private buildings, as well as for multi-storey structures.

Finishing buildings from an aerated concrete base is a mandatory requirement so that the building can last for a long period. For it, you can use various materials - brick, plaster, siding. The main thing is that the material is of high quality, wear-resistant. Also, its installation should be done correctly so that in the future it does not move away, does not crumble.

Video

The technology of finishing walls from aerated concrete blocks using various materials.

Photo of the finished facade of the house from aerated concrete blocks

Examples of how you can change the facade of a house made of aerated concrete blocks using various finishing materials.