TTK. Installation of external thermal insulation systems for building facades Ceresit WM and Ceresit VWS. Wet facade installation technology Ceresit facade system

Almost every developer wants to make a beautiful, warm and inexpensive building facade. However, this is not always possible to achieve. And here Ceresite facade insulation system with a surface plaster layer allows you to combine these three issues into one successful solution.

Technological principles of the Ceresit wet facade system

Ceresit wet facade technology is a multi-layer structure consisting of an insulation fixed to the wall, a reinforcing layer and painted surface plaster.

Expanded polystyrene or mineral wool boards are used as insulation. The reinforcing layer is made of plastic mesh, and the plaster layer is made of ready-made Ceresit building mixtures. The surface is painted with acrylic, silicate or silicone paint.

Advantages of the Ceresit facade system

Ceresite facade systems can reduce the consumption of basic building materials when erecting walls without increasing heat loss in the cold season. It gives the building a beautiful appearance for a long time and is much cheaper than other structures in terms of cost.

The advantages of this design are:

to provide an attractive appearance of the building;
low weight with high thermal efficiency
lack of "cold bridges";
displacement of the dew point into the heat-insulating layer, which excludes the formation of wet condensation in the walls;
complete absence of possible freezing of walls in the event of the formation of microcracks;
providing additional soundproofing of the walls.

At the same time, the relatively low cost of the necessary materials makes the plaster facade of the Ceresit system quite affordable for most developers. In addition, it should be noted the ease of installation, which significantly reduces the construction time.

Installation of the Ceresit wet facade system

Installation of a wet facade ceresite is carried out in several stages, which include:

preparatory work;
installation of insulation;
fixing the reinforcing mesh;
applying a plaster layer;
surface painting.

High-quality performance of work at each stage is important for all subsequent ones and affects the final result.

Ceresit plastering system - device sequence

Wall surface preparation

Work on the installation of the facade system begins with an inspection of the surface of the walls on which the materials to be mounted will be fixed. At the same time, the outer surface is thoroughly cleaned of any dirt and carefully examined. Defects in the form of cracks, irregularities, potholes are detected and, if necessary, are eliminated.

In some cases, to improve the bearing capacity of the walls, they are covered with a rough layer of plaster. After that, the entire bearing surface is primed.

Preparing the wall for the facade requires special attention - the surface must be flat

To reliably ensure the stability of the system, a U-shaped metal profile is fixed at the bottom of the wall, which plays the role of a support bar. This element is installed around the entire perimeter of the building, as well as over windows and doors. It protects the bottom edge of the structure from moisture and allows the weight of the entire sandwich structure to be properly distributed.

The support profile is installed at a height of 30-40 cm from the ground level or installed on a protruding plinth. A gap of 3-4 mm is left between the individual strips to compensate for possible thermal expansions. For fastening, plastic dowels and self-tapping screws are used, which are hammered in every 15-20 cm.

Insulation installation

Insulation installation is not a complicated process, but a responsible one

After completing the preparatory work, they begin to install the insulation. First, mineral wool slabs or polystyrene are glued to the prepared surface using Ceresit CM-15 or CM-11 wet facade glue. The adhesive is applied with a notched trowel in a wide strip along the entire perimeter of the slab and in a dotted area in the center. This allows you to ensure reliable fastening of the material with an economical use of the adhesive. For correct execution, it is enough to cover 40% of the surface of each board with glue.

Installation of slabs is carried out from the bottom up, starting from the bottom row, which is immediately installed along the entire perimeter. Installation of each row starts from the corner. Wherein:

vertical joints between slabs in adjacent rows should not coincide;
adjacent slabs are tightly pressed against each other to minimize the thickness of the seams;
excess glue protruding from the seams is immediately removed.

Insulation fixing scheme with a disc dowel

Three days later, after the glue has completely dried, fixing plastic dowels are installed, the design of which provides for the presence of a wide plate-shaped head, a plastic nail and a bursting hammered nail.

The length of the dowels used depends on the thickness of the insulation and the material of the walls. The immersion of a nail into a wall of porous materials should be at least 9 cm, and for solid at least 5 cm. 6-10 pieces are hammered into each plate.

Installation of the reinforcing layer

Reinforcement begins no earlier than a day after the installation of the insulation. As a material for the reinforcing layer, a facade construction mesh made of fiberglass, which has a special alkali-resistant coating, is used. Adjacent strips of the mesh should overlap each other by 5-8 cm. If necessary, reinforcement of individual sections of the mesh should be applied in two layers. At the corners, in doorways, windows and on lintels, a special corner with an edge mesh is installed.

The reinforcing material is covered with a layer of adhesive composition 2-3 mm thick, and the total layer thickness can be up to 5 mm.

The final stage of the Ceresit wet façade installation is finishing. It provides for the application of a plaster layer to the surface and its subsequent painting. You can start this work only after the reinforcing layer has completely dried, which lasts 3-5 days.

The material for the plaster layer must have a high vapor permeability, good resistance to adverse weather conditions and high mechanical strength. For this, special dry facade mixtures Ceresit are used. Plastering work can be carried out in dry weather at an outside air temperature of + 5 ° C to + 30 ° C, while direct sunlight is not allowed on the fresh plaster layer.

The surface is painted with a roller or through a spray gun with Ceresit acrylic, silicate or silicone paints.

Two systems of Ceresit "wet" insulating facade

Today, two systems of Ceresit warm facades have been developed and successfully used - CWS and WM. Their difference lies in the form of insulation used in the first case, it is expanded polystyrene, and in the second, mineral wool slabs. The rest of the construction elements are the same in both cases.

Ceresit VWS system

In this system, expanded polystyrene plates or polystyrene foam are used as insulation. These materials differ from mineral wool boards in their lower specific gravity and better thermal insulation properties. At the same time, foams have a very low vapor permeability, which practically excludes the removal of water vapor from the load-bearing walls and insulation structure.

Since, as a result of the performed insulation, the "dew point" will go beyond the walls into the insulation zone, moisture will accumulate between the moisture-proof insulation and the surface of the walls. This can lead to the formation of mold and mildew with the consequent destruction of the base wall materials. In order to avoid the accumulation of such moisture in the premises, it is necessary to organize general ventilation with increased air exchange, which may entail an increase in heat losses. It is worth noting that this problem occurs mainly in rooms with excessive humidity, for example, in swimming pools, saunas, showers. The vapor permeability of the finishing materials is not important, because polystyrene foam can be faced with any materials

It should be noted that expanded polystyrene is cheaper, lighter and stronger than mineral wool boards. Therefore, its use is justified for economic and technical reasons.

Cerezit VWS device diagram

Expanded polystyrene plates
Mineral wool notch
Dowel
Base plaster layer
Fiberglass mesh
Primer for finishing
Decorative plaster layer
Waterproofing layer

Video: device example facade Ceresit with expanded polystyrene plates

Ceresit WM system

Here mineral wool slabs are used as insulation. Unlike expanded polystyrene, this insulation has good vapor permeability and the structure can "breathe". At the same time, unlike the previous system, here facing materials must have high vapor permeability, therefore, mineral or polymer plasters are used as finishing. In addition, mineral wool is a non-combustible material, which is very important in the event of a fire.

Among the shortcomings, it is worth noting that this wet facade system has a high specific gravity, which makes the structure heavier, it is more expensive than foam insulation and is not as durable as they are. The price of the facade device according to the Ceresit WM system is relatively high.

Cerezit WM device diagram

Mineral wool slabs
Dowel
Basic plastering words
Fiberglass mesh
Primer for finishing
Decorative plaster layer
Waterproofing layer
Extruded polystyrene blocks

Installation instructions for Ceresit mineral wool façade system

Comparative characteristics of Ceresit wet facade systems

Cerezit VWS	Cerezit WM
*Advantages*	*Advantages*
1. Does not lose thermal insulation properties when exposed to moisture	1. Mineral wool slabs are made from natural rocks
2. Environmentally friendly facade	2. Resistant to very high temperatures, fire resistant
3. Lightweight and durable	3. High coefficient of vapor permeability
4. More manufacturable due to strength characteristics	4. Resistant to most chemicals
*disadvantages*	5. Good sound insulation properties due to the fibrous structure of mineral wool
1. Low coefficient of vapor permeability	6. Suitable for any wall base
2. Low sound insulation properties	*disadvantages*
3. Not resistant to the effects of most organic solvents	1. Heavy material
	2. Relatively high cost

Finally

The use of Ceresit wet facade technology is a technically justified and cost-effective technical solution. This system effectively retains heat in the building and is durable and beautiful in appearance.

TYPICAL TECHNOLOGICAL CARD

Installation of external thermal insulation systems for building facades Ceresit WM and Ceresit VWS

1 AREA OF USE

A typical technological map (TTC) is drawn up for the installation of external thermal insulation systems for the facades of Ceresit WM and Ceresit VWS buildings.

The TTK is intended to familiarize workers and engineering and technical workers with the rules for the production of work, as well as for the purpose of using it in the development of projects for the production of works, projects for organizing construction, and other organizational and technological documentation.

2. GENERAL PROVISIONS

Thermal insulation systems Ceresit WM and Ceresit VWS (manufacturer - Henkel Bautechnik) are systems of external thermal insulation of facades of buildings and structures "bonded type", in which the following are used as a thermal insulation layer:

Basalt fiber mineral slabs (hereinafter referred to as mineral wool slabs) - Ceresit WM system;

Expanded polystyrene boards - Ceresit VWS system. In this case, fire-prevention cuts are made of mineral wool boards.

Thermal insulation systems Ceresit WM and Ceresit VWS are designed for the insulation of both newly erected structures and buildings under reconstruction.

Ceresit VWS insulation system diagram

Fig. 1. Ceresit VWS insulation system diagram

Ceresit WM insulation system diagram

Fig. 2. Ceresit WM insulation system diagram

Note

1. On flat, plastered surfaces, the consumption of ST 85 and ST 190 can be less by 2-3 kg / m.

2. The thermal insulation project must determine the number of required fasteners. per 1 m and their type.

Ceresit WM and Ceresit VWS thermal insulation systems are the equivalent of a building product, supplied as a set of pre-fabricated, uniquely identifiable and certified materials. The use of non-system materials or materials from other manufacturers is not allowed.

Completion of all internal "wet" processes (masonry, concrete and plastering works, cement screed) and ensuring sufficient drying of the entire object;

Roofing devices;

Installation of window and door blocks.

During installation, it is necessary to take measures to prevent the ingress of water to the surface and into the systems.

Installation of thermal insulation systems should be carried out at an air and base temperature from + 5 ° C to + 30 ° C, unless there are other specific instructions.

3. ORGANIZATION AND TECHNOLOGY OF WORK PERFORMANCE

3.1. Preparatory work

3.1.1. Installation of scaffolding

Scaffolding should be installed at a distance from the outer wall equal to the thickness of the insulation plus 45 cm. For anchoring the scaffolding, it is necessary to effectively use window and door openings, balcony slabs and other structures that reduce the number of attachment points passing through the thermal insulation system being arranged. In places where it is necessary to provide direct fastening of the scaffold to the outer wall, anchors should be installed with a slight downward slope (Fig. 3). This will prevent rainwater from getting inside the insulation layer. For ease of installation, scaffolding should be installed with a start at the corners of the building at a distance of at least 2 m.

Fig. 3

It is forbidden to install thermal insulation systems from hinged construction cradles.

Improper installation of scaffolding significantly complicates the installation of thermal insulation systems and increases the likelihood of poor quality external decorative coating.

3.1.2. Preparation of the building base

The preparation of the building base should include the following operations:

Mechanical cleaning of the base from the remnants of mortar, dirt (dust, chalk, etc.) (Fig. 4);

Mechanical removal of efflorescence, cement and lime deposits and subsequent treatment of the cleaned surfaces with a special composition Ceresit CL 55(fig. 5);

Mechanical removal of fungi, lichens, mosses, mold and subsequent treatment of the affected areas with the antifungal agent Ceresit CT 99.

Fig. 4

Fig. 5

Ceresit CT 99 contains organic biocidal components. Therefore, do not eat, drink or smoke when working with the material. It is not allowed to apply Ceresit CT 99 mortar by spraying!

Checking the bearing capacity of the base;

Removal of crumbling and fragile areas of the base;

Filling flaws in the base surface with a depth of more than 20 mm with Ceresit CT 29 repair putty;

Treatment of the base with Ceresit CT 17 universal primer (performed if necessary);

Removal of rust and treatment with an anti-corrosion primer on metal parts covered by a thermal insulation system.

The building base should be checked for deviation from the plane. Substrate irregularities should not exceed 1 cm in all directions when checked with a 2 meter level. If the base does not meet these requirements, it must be leveled with mortar (eg Ceresit CT 29). If necessary, lengthen the brackets for fastening gutters, lightning rods, outdoor lighting devices, etc., taking into account the thickness of the thermal insulation material planned for use.

3.2. Installation of Ceresit thermal insulation systems

When installing systems, the following sequence of operations must be observed:

Installation of a basement profile;

Bonding insulation boards to the base;

Mechanical fastening of thermal insulation boards with dowels;

Installation of reinforcing elements and profiles;

Creation of a protective reinforced layer;

Priming of the protective reinforced layer;

The device of the external decorative layer;

Priming and painting of the decorative and protective layer (performed if necessary);

Sealing of scaffolding attachment points.

3.2.1. Installation of the basement profile

The installation of the basement profile should be carried out in accordance with the project, horizontally, in one plane, attaching it to the base with dowels. The distance between the dowels should not exceed 30 cm (fig. 6). It is necessary to leave a gap of 2-3 mm between adjacent profiles for joining with plastic connecting elements.

Fig. 6

It is forbidden to overlap the plinth profile.

At the points of attachment of the basement profile, it is necessary to ensure its tight abutment to the base, using special washers of the appropriate thickness.

At the corners of the building, the basement profile is formed using two oblique cuts and subsequent bending. The connection of the plinth profile is carried out using plastic connectors (Fig. 7).

Fig. 7

Do not allow deformation of the basement profile when attaching it.

3.2.2. Bonding insulation boards to the base

Bonding of thermal insulation boards must be performed using special adhesives:

Ceresit CT 190 - for gluing mineral wool boards;

Ceresit CT 85 - for gluing expanded polystyrene boards.

3.2.2.1. Mortar preparation

Adhesives are supplied as dry mix in sealed bags. To prepare the mortar mixture, take an accurately measured amount of clean cold water (from + 15 ° C to + 20 ° C). The dry mixture is gradually added to water with constant stirring, achieving a homogeneous mass without lumps. Mixing is carried out using a mixer or a drill with a nozzle for viscous substances. The stirrer rotation speed should be 400-800 rpm (fig. 8).

Fig. 8

Stirring the mortar mixture with a mixer at a speed of rotation of the stirrer in excess of 800 rpm can lead to stratification of the mortar mixture!

Then the technological pause is maintained for 5 minutes to ripen the mixture, after which it is stirred again.

In the process of work, the consistency of the mortar mixture is maintained by re-mixing it. Adding water to the mortar mixture is prohibited!

3.2.2.2. Adhesive application on thermal insulation boards

Using a plastering spatula, the glue is applied to the insulation boards with a roller 50-80 mm wide and 10-20 mm thick along the entire perimeter with an indentation from the edges of 3-4 cm and additionally 5-8 "Easter cakes" along the plane of the plate (Fig. 9). The strip of adhesive applied along the contour of the board should have breaks in order to avoid the formation of air pockets. After installing the insulation plate in the design position, the adhesion contact area should be at least 40% of the area of the surfaces to be bonded.

Fig. 9

Before applying the adhesive, the surface of the mineral wool board should be primed with a thin layer of the same adhesive.

When installing double density mineral wool boards (eg ROCKWOOL Facade Batts PAROC FAS 4), the adhesive must be applied to the soft side of the board.

If the unevenness of the base does not exceed 3 mm, the adhesive is applied over the entire surface of the slab using a notched trowel with a tooth size of 10-12 mm (Fig. 10).

Fig. 10

On mineral wool boards with a transverse orientation of fibers (lamellas), the adhesive solution is applied exclusively over the entire surface of the board using a notched trowel with a tooth size of 10-12 mm, while combining the priming operation.

Immediately after applying the adhesive, the board is set to the design position, moving it vertically and horizontally with light rammers with a long float. Remove excess glue that has come out (fig. 11).

Fig. 11

Do not leave adhesive on the ends of the insulation boards.

Heat-insulating plates are glued to the base from the bottom up, starting from the basement profile in horizontal rows, with ligation of vertical seams in each row, and at the outer and inner corners, the plates should be serrated (Fig. 12).

Fig. 12

When insulating the basement of the building, the insulation plates are glued from top to bottom, starting from the basement profile.

After installing the first row of thermal insulation boards on the basement profile, the gap between the building base and the profile must be filled with polyurethane foam (for example, Macroflex polyurethane foam).

Insulation boards should be installed close to each other. If, after installing the plates, gaps with a width of more than 2 mm remain, they must be filled with wedge-shaped strips cut from heat-insulating material.

It is not allowed to fill the joints between the heat-insulating boards with an adhesive.

At the corners of window and door openings, heat-insulating plates with a corner cut should be installed so that the joints of the seams with the adjoining plates are at a distance of at least 100 mm from the corner of the opening (Fig. 13). The joints between the thermal insulation boards must be at least 100 mm from the edge of the protrusion on the plane of the base or from the border of different base materials (for example, concrete areas in masonry).

Fig. 13

If the window and door blocks are mounted in the plane of the facade, then the thermal insulation boards should be installed with an overlap of at least 2 cm on the block box. A polyurethane sealing tape or an adjoining profile must be glued around the frame perimeter.

In the event that the window and door blocks are recessed in relation to the plane of the facade, and it is necessary to insulate the slope, then firstly, the thermal insulation plates of the main plane of the facade are installed with the necessary overlap inside the opening, and then the insulation plates prepared by the size are glued to the slopes. Previously, a sealing polyurethane tape or an adjacent profile must be glued around the perimeter of the box.

The sealing strip in the design position must be compressed by at least 1/3 of its free thickness.

Cut the sealing strip at all corners. It is not allowed to bend around the corner with a continuous tape without a butt joint.

In the Ceresit VWS thermal insulation system, floor-by-floor horizontal fire-prevention cuts, edging of window and door openings are made of mineral wool slabs. The height of the cross-section of the scatterers and edging must be at least 150 mm.

All elements (for example, electrical wiring, etc.) that are not removed from the facade and are underneath during the installation of the heat-insulating layer are marked in order to avoid their damage during subsequent dowelling.

The insulation boards are cut using a steel ruler, square, wide-bladed knife and fine-toothed saw.

The correctness of the installation of each insulation plate in the design position is controlled by a 2-meter level.

Mineral wool slabs sometimes have large inclusions of the binder used in their manufacture, which in the future can cause dark spots to appear on the surface of the outer decorative layer. Therefore, after fixing the mineral wool slabs, it is necessary to carefully examine their surface and mechanically remove the existing inclusions, and fill the formed cavities with heat-insulating material.

3.2.2.3. Fastening of expanded polystyrene boards with CT 84 Express glue in the VWS system

Apply the CT 84 adhesive with a nailer in the balloon up position, keeping a sufficient distance between the gun and the plate for correct application of the adhesive. Glue is applied along the perimeter of the slab with an indent from the edge of ~ 2 cm and in one strip through the center of the slab, at an equal distance from its long sides (Fig. 14-15).

Fig. 15

Then immediately attach the slab to the wall and press it down with a little force using a long float. The evenness of the surface of polystyrene foam boards can be adjusted within 20 minutes from the moment they are glued, also using a long float. After drying, excess CT 84 glue can be cut off with a knife or sanded with a float.

2 hours after bonding, the expanded polystyrene boards can be sanded, additionally fixed with dowels and a protective reinforced layer made of CT 85 can be made on their surface. Fresh adhesive residues can be removed with Ceresit PU Cleaner or acetone.

CT 84 can be used to fill the gaps between the expanded polystyrene plates.

3.2.3. Mechanical fastening of thermal insulation boards with dowels

Mechanical fastening of thermal insulation boards with appropriate dowels is carried out only after the adhesive has completely dried, but not less than 72 hours after gluing (at an air temperature of + 20 ° C and a relative humidity of 60%).

Dowelling is performed as follows:

A hole is drilled for a dowel with a depth of 10-15 mm more than the length of the anchoring;

A plastic dowel is inserted into the hole with a "hand" force so that the dowel disk is flush with the surface of the plate;

The metal spacer core is clogged (Fig. 16);

The dowel disc is filled with adhesive solution for gluing the boards.

Fig. 16

The dowel disk after its installation must not protrude above the surface of the heat-insulating layer.

When hammering the metal spacer core, it is necessary to exclude the possibility of damage to its plastic head. Therefore, it is recommended to use a hammer with a rubber head or to drive the core through a wooden spacer when working. A core with a damaged head must be replaced.

The number and type of dowels are determined based on calculations in the project documentation. On the normal plane of the facade, the fixing of the dowels, as a rule, is carried out at the corners of the slabs and in their center.

At the outer corners of the building, in the zone of increased wind loads, at a distance R, which is 1.0 ... 2.0 m from the edge of the corner in each direction, reinforced dowelling is performed in accordance with Fig. 17, 18.

Installation technology Wet facade becomes more and more popular, because there are only a small number of cold bridges.

But this is far from the last factor in the chosen technology. Thanks to this technology, you literally take dew points out of the living space. As a result, the interior of the walls will not suffer from condensation. In our article, we will consider the step-by-step instructions for this finish.

What is a wet facade system?

The application of this technology is associated with the creation of a fortified cake from several layers on the outer part of the facade walls. In the process of work, special plaster mixtures, mastics and adhesives are used. The technology consists in observing the following sequence of applying certain layers. The result is a unified system that has many advantages.

Composition and structure

The wet façade is a new technology that provides a high level of heat retention.

The device of such a facade consists in the creation of three functional layers

Reinforced layer... It is also called basic. It is represented by a layer of reinforced mesh with glue, which is designed to level the surface of the load-bearing wall. The insulating material holds well on it.
Insulation layer... It is represented by insulation plates with a minimum thermal conductivity coefficient. Among such materials are expanded polystyrene and mineral wool.
Exterior finishing layer... It is used for surface protection and finishing. It is made of plaster, after which it dries, you can apply a special coloring composition.

Physicochemical characteristics of insulation for a "wet" facade

In this case, the following types of plates are used as insulation:

Expanded polystyrene,
Mineral wool.

Expanded polystyrene boards are distinguished by increased heat-shielding performance. This material has a relatively low cost. It is lightweight and easy to install.

Mineral wool slabs are somewhat more expensive. But they are more reliable in operation. It is a non-flammable material that stops the spread of fire. In addition, it has higher heat-shielding characteristics and is not exposed to aggressive environments.

Give preference to mineral wool made on the basis of diabase or basalt. It must not react with plasters and must have a high tensile strength.

Density of mineral wool insulation should be at least 130 - 140 kg / sq. m. Another important point is the moisture absorption coefficient. It should be minimal.

Necessary materials

Insulation.
Dowels-umbrellas at the rate of 5 - 8 pieces per sq. m of the facade.
Fiberglass mesh.
Plinth and corner profiles.
Primer.
Glue. Not only insulation, but also a reinforcing mesh will be attached to it.
Decorative plaster.
Paint if needed.

Installation technology

It is important to follow the installation technology in the exact sequence. The start of work is always preceded by the necessary surface preparation. It consists in the assessment and arrangement of the base, the preparation of wooden or metal scaffolding.

The stage of preparation for the installation of a "wet" facade

Examine the base. He needs to be freed from dirt. Check the substrate for load-bearing and adhesive properties. If the finish is partially damaged, it is removed and replaced with whole areas. If there are irregularities on the facade, the surface is leveled with plaster.

If the façade is finished with highly absorbent material, it must be carefully primed. Also remove old plaster if it is present on the surface of window and door slopes.

Basement profile device

Now you need to install the profile strip. This design allows you to distribute the load from the thermal insulation boards, which are planned to be laid in the future. Also, a profile is needed to protect the bottom row of boards from high humidity.

The profile is fixed taking into account the following rules:

The profile must be installed 40 cm from the ground surface. Gaps of about 3 mm are left between the horizontal strips. It is needed in case of thermal expansion.
The profile is fixed with dowels and self-tapping screws, the number of which per 1 sq. m is determined depending on the mass of thermal insulation boards. Usually the pitch is 10 to 20 cm.
At corner joints at home, a special angular profile is used.

Installation of a heat-insulating layer

For the organization of a "wet" facade, a heater is traditionally used, represented by slabs of mineral wool or expanded polystyrene.

What is needed for the correct installation of the slabs?

You need to retreat from the edge 3 cm... Then glue is applied along its entire perimeter with a wide strip.
In the middle, the glue mixture should be applied pointwise... As a result, the adhesive should cover about 40% of the entire surface area.
Note! If you decide to use lamella mats for facade insulation, their surface must be completely covered with glue.
The slabs are laid apart in the same way as in the case of brickwork. Plates with insulation are tightly pressed against the surface of the wall and against neighboring plates. Excess glue is removed immediately during work. The insulation is installed in rows. Start at the bottom of the plinth profile, gradually working upward.

If the walls of your house are made of solid material, the indentation should be 5 cm. If the walls are porous, the deepening is 9 cm. Keep in mind that per sq. m should have 6 - 14 dowels. But the exact amount is determined by the mass and thickness of the insulation board, its location and the diameter of the fasteners.
First, the nests are made, after which the dowels are installed. If an upper mount is used, the clamping sleeves are placed flush with the surface of the insulation layer.

Reinforcement layer installation

Its device can be resorted to three days after installing a layer of thermal insulation.... First, you need to process corner bevels on doorways and windows, outside corners of the house and joints on vertical slopes. And only after that you can process even sections of the wall.

Reinforcement is carried out according to this scheme:

The glue is applied directly to the surface of the insulation. A reinforcing mesh consisting of fiberglass is slightly recessed into it.
The covering layer is applied to it.

As a result, the thickness of the reinforcement should be no more than 6 mm. A mesh is placed at a distance of 2 mm from the surface.

Finishing stage

After a week, the reinforcement layer will completely dry out.... A plaster layer is applied on top of it. Use only plaster that is suitable for outdoor use. The plaster composition should have an increased degree of steam permeability, resistance to precipitation and mechanical damage.

The quality of the resulting surface plaster is largely determined by the conditions in which it is applied to the surface. The optimum temperature range is from +5 to +30 degrees. It is important that during this period there is no strong wind and precipitation.

There must be a shadow. If it does not exist, you will have to create it artificially.

Installation of a "wet" facade in the basement of the building

This technology has its own characteristics associated with the basement of the building:

Before you get started, carry out thorough waterproofing on the basement of the wall. Also, waterproofing is carried out in the blind area in this area.
Buy insulation material with a low coefficient of moisture permeability.
Insulation boards must be fixed using dowels... Moreover, they are fixed at a height of more than 30 cm from the ground.
Plinth required reinforce in two layers.
To make a competent lining of the plinth, use the front plates. You can buy stone slabs, ceramic tiles, or mosaic plaster.

Note! Finishing work should be carried out only after the doors and windows have been fully installed, the roof has been erected, the electrical wiring has been laid, the erected house has shrunk and the interior finishing work has been carried out.

Applying a decorative layer

Usually, when installing "wet" facades, everything ends with decorative plaster. However, if you prefer structural plaster, you can paint it additionally. This requires special paints that are suitable for finishing outside the building. The most widespread and popular type of structural plaster is "Bark beetle".

Conditions for the implementation of facade works

The most important parameter is the period of work. There are temperature restrictions related to the quality of the selected materials. All actions are performed at a temperature not lower than +5 degrees.

This factor affects both the quality of the work carried out and the service life of wet facades. If the temperature regime is violated, the outer layer may crumble or crack.

Wet facade technology is interesting because it can be used to do the work with your own hands. But still, you will need some knowledge and skills for plastering.

Insulation technology "wet" facade:
main pros and cons

Among the main advantages of this technology are the following:

Lack of hard ties in a structural element, because they can act as cold bridges.
Duration of service designs reaches 25 years. You don't need complicated care. And during the operation, the facade will have to be painted only a few times.
This is one of the most affordable and effective home insulation options.
Technology can be used both in multi-storey and in private construction.
The technology can significantly reduce heating costs due to increased thermal insulation properties. It is excellent at absorbing noise. In addition, this technology makes it possible to implement complex design solutions related to the color and texture of the finish.

When installing a “wet facade”, it is necessary to adhere to the requirements of SNiP. Failure to comply with SNiP requirements reduces the quality of the work done, which leads to the fact that the efficiency of a wet plaster facade is reduced to almost zero.

But, like other technologies, it has its drawbacks:

Installation work carried out at a temperature of more than +5 degrees, otherwise you will have to equip an enclosed space.
The solution will not be evenly dry out in high humidity and precipitation. As a result, defects may appear.
It is important that the solution does not dry out. This danger exists with high solar activity. In this case, additional protection is required.
During installation it is necessary to protect the facades from dust and dirt, protect them from the wind.

Varieties of thermal insulation system
depending on the insulation

Today, there are two main options used to insulate facades:

Heavy wet facade... When installing it, it is not supposed to glue insulation to the wall surface. Dowels are inserted into it, to which the insulation is attached. This will require special hooks.
A special mesh is applied to the facade and plastered, after which it is covered with a finishing finish. The plaster layer should be sufficiently thick and should be about 40 mm. This option is more expensive, but it is best suited for facade insulation in harsh weather conditions.
Light wet facade... Such a system is used more often, since it gives a minimum load and has a low cost. You will need any flat surface to install it. To install insulation boards, cement glue is used. In addition, dowels can be used.
Plates made of solid mineral wool are suitable for insulation. The finishing layer of plaster should be about 4 mm thick.

Ceresite wet facade: products
to create perfect thermal insulation

Ceresite offers its customers plaster and ground coatings, ideal for the installation of a "wet" facade.

It has special durability. The duration of their service is at least 50 years.

During this time, repairs will not be required, and technical characteristics will not deteriorate.

There are two systems of facades Ceresite- MV and PPP. The main difference is the use of a certain thermal insulation material and the option of applying a decorative coating.

System Ceresite MV assumes the use of mineral wool slabs for insulation. And in the Ceresit PPS system, expanded polystyrene is used.

Possesses properties that prevent external influences, and also add decorativeness to the facade, along with protecting the walls.

The modern market is rich in high-tech means for plastering the facade: they include facade plaster from various manufacturers, including a mixture of Ceresit.

This manufacturer meets all the requirements of the facade coating. Ceresit is a company that has been producing products for construction and decoration for more than a dozen years.

Plants for the production of Ceresit decorative plaster are located in many countries, including Russia, which indicates the demand for the material, and, accordingly, the high quality of products. In addition, the technology for the production of facade mixtures is slightly different from analogues.

Ceresite is composed of high-tech constituents that endow the material with appropriate qualities. A wide range of products will help you decide on the choice of material. The material is presented by the manufacturer in different textures, with different compositions (depending on the purpose).

Variety of colors and textures

Advantages

Ceresit is widespread precisely because of its positive characteristics:

a high rate of elasticity (the material contains components that enhance the elasticity and viscosity of the material);
ease of application(standard application with a spatula does not differ from similar work with other mixtures);
creates an impact-resistant coating (mechanical resistance is guaranteed by the manufacturer);
resistance to fading (even the colored mixture does not fade when exposed to ultraviolet rays);
material is durable(operational properties remain for more than 30 years);
environmental friendliness (plaster does not contain harmful substances);
moisture resistance (the coating repels water and prevents its penetration into the surface);
pollution resistance;
resistance to temperature extremes;
variety of colors and shades.

Color solutions

In addition, the material has good adhesion properties, which allows it to be used on various surfaces. The classification for use in cold and warm weather also helps in selection, especially when performing work in the cold season.

disadvantages

No technical flaws were found in this mixture: the material has established itself as a quality product. If you can call the high price (in comparison with analogues) a disadvantage, then this is the only thing that does not always suit the buyer. The price is quite consistent with the quality, so by overpaying a little, you can feel complete satisfaction from the quality of the products.

Technical characteristics of Ceresit plaster

Ceresit is a certified product, facade mixtures (for example Decor Plus) have the required quality criteria, have the following technical characteristics:

density - 1.7 kg per dm³;
application temperature - from + 5 ° С to + 30 ° С;
time for drying the layer before texture formation - up to 15 minutes;
resistance to moisture (rain) - after 24 - 48 hours;
consumption - from 2.5 kg / m² to 2.7 kg / m² (for grain of 2 mm), from 3.5 to 3.8 kg / m² (for grain of 3 mm).

The plaster has persistent hydrophobic properties, low water absorption, resistance to pollution.

NOTE!

The mixture should not be frozen, and the opened packaging should be used as soon as possible, kept hermetically closed.

Specifications

How Ceresit plaster stands out from competitors

To create a decorative outer coating, a facade plaster with a grooved structure: this mixture is excellent for concrete surfaces, gypsum, sand, cement.

This feature allows you to use this facade material on any surfaces while maintaining the texture.

Due to the composition of the plaster, its elasticity is especially distinguished, in comparison with other mixtures... In addition, such a coating does not fade and is mechanically stable.

If we consider the products of other manufacturers, then not everyone has a division of mixtures into summer and. The question of choice according to this parameter is especially relevant when working in unconventional times for repair work: in winter or cold spring or autumn.

Types of Ceresit plaster

High-quality coatings Ceresit are classified according to their composition:

... Designed for finishing. The composition prevents the appearance of fungi, masks small cracks, belongs to expensive mixtures;
... They are able to hide defects on the surface, do not have vapor permeability, have a smooth texture, and have increased strength indicators;
... Due to the presence of cement in the mixture, this coating is durable, breathable, elastic, easy to apply;
... The main component of the mixture is silicate resin. These mixtures have elasticity, special strength, are most often used for indoor work (in rooms with high humidity), as well as for outdoor work;
... They are used for external coating of facades.

Comparison of species

In addition, Ceresit compounds are made for subsequent painting or for a topcoat without painting.

Facade mixtures are divided into "winter" (you can work with them at temperatures below 0 ° C) and "summer" (for work in hot weather).

Ceresit plaster textures

Ceresit compositions have two textured patterns, the texture of which is achieved due to the presence of granules in the composition and by a certain application:

... This texture should be applied in a thin layer. Due to the presence of a large number of grains in its composition, a peculiar pattern is formed during application. Suitable for outdoor and outdoor use;
"Lamb"... Due to the special texture, the "lamb" effectively hides the flaws or unevenness of the walls, which subsequently acquire a different, improved look.

Types of textures

Any texture can be presented in different colors, and, if necessary, it can be additionally colored. For coloring, it is advisable to use Ceresit paints, which may contain acrylic components, silicate or silicone.

How to properly prepare the mixture

To prepare the mixture, you must have a container (bucket) for mixing it (use only stainless steel dishes). The manufacturer most often produces plaster in 25 kg bags.

For the correct calculation of the required amount of the mixture, it should be borne in mind that The recommended consumption of the mixture for 1m² is from 2.5 kg to 4 kg.

For 5-6 liters of water, it is necessary to fill in 25 kg (bag) of dry composition. Use cold water.

Mix the plaster with a mixer or concrete mixer.

The mixture is left to dissolve completely for three minutes, and then it should be mixed again.

The prepared mixture should be used within three hours.

You cannot use the frozen mixture.

Mix finishing technology

Before applying Ceresit mixture, you should prepare the base for finishing:

clean the surface from other coatings, sand, debris;
align (if necessary) the entire base.

The border between the facade surface and the foundation is covered with a basement profile before coating with facade plaster.

Before applying the facade plaster, a reinforcing layer should be applied:

use a layer of Ceresit waterproofing mixture with a thickness of 2 mm to 3 mm;
lay it so that it is drowned in the mixture;
then another layer of the solution should be applied to the mesh;
even out the mixture and wait until it dries.

Reinforcing mesh laying

To complete the finishing with Ceresit plaster, you must consistently perform the following steps:

the prepared surface should be treated with a primer: this must be done for better adhesion of the plaster to the wall. When working with Ceresit plaster, it is recommended to use a primer paint for facades of the same manufacturer in a color similar to the finish;
after one coat of primer, plaster should be applied... To apply it, you should use a polisher;
the composition should be applied in a thin layer, which should correspond to the thickness of the grain;
when applied to a small area, the plaster should be leveled without waiting for it to dry;
to give texture, use a polyurethane float, which is used to treat the surface after it has stopped sticking.

Creating an invoice

To add texture, plaster should be applied in a circular, horizontal application, using a polyurethane polish.

Creation of various textures

For the texture "bark beetle" mixtures with grain up to 2 mm to 3.5 mm in diameter are used. In this case, the surface is rubbed with a polisher strictly either vertically or horizontally. "Bark beetle" is made in white version, therefore additional painting is required.

NOTE!

Various rollers are used when applying pebble plaster, spatulas or graters and a mixture containing pebbles with a diameter of 1.5-2.5 mm.

Plaster grout

Thus, Ceresit plaster is widespread due to its high-quality composition, compliance with high requirements for impact resistance, endurance, decorativeness, durability. These mixtures, despite the fact that their cost may be higher than competitors, are in great demand. The facade covered with such plaster will acquire individuality and will be effectively protected.

Useful video

Do-it-yourself application of the decorative mixture "Bark beetle" on the facade of the building:

In contact with

The Ceresit system for thermal insulation of building facades is based on the use of wet thermal insulation technology. The components of the structure include glue, decorative plaster, paint, insulation, etc. Any Ceresit product complies with the ISO 9001: 2000 standard.

Main advantages

Cerezit brand insulation materials are most effective in the complex. The system designers took into account the characteristics of various materials and made them as compatible as possible. The resulting solution was repeatedly tested and then released to the market.

The result - the consumer receives a system, each element of which is precisely calibrated and tested. The creators of the unique thermal protection have not forgotten about decorativeness: a wide selection of finishing materials allows you to insulate any building. Even historical buildings can not only be thermally insulated, but literally restored! After the completion of the work, the structure looks like new.

Facade insulation technology with the Ceresit system is a closed system with a layer of protective plaster over the thermal insulation. The insulation is attached to the outside of the building with cement glue, and a thin protective layer reinforced with fiberglass is created on its surface. The decorative finishing of the facade consists in fine plastering.

In such a facade insulation system, two types of insulation are used - mineral wool (Ceresit WM) or expanded polystyrene (Ceresit VWS).

Installation with mineral wool

Mineral wool is attractive because it allows steam to pass through well - after all, moisture accumulates and destroys the building, so it must come out in the form of steam. The use of this material allows the facade to "breathe" and not collapse longer. At the same time, the functions of the mineral wool should be supported by polymer or mineral plaster with good vapor permeability. The decorative layer for the Ceresit WM system is unacceptable in the form of acrylic materials.

Mineral wool slabs are glued with Ceresit CT-190 mortar, and the mixture is applied so that the surface with the glue makes up at least 40% of the slab area. After the glue dries, the boards are mechanically fastened with dowels.

After fixing the mineral wool slabs, Ceresit ST-190 solution is applied with a layer of 3 mm with a special trowel. A reinforcing fiberglass mesh is embedded in this layer of the mixture, on top of which another layer of the mixture of 2 mm is applied. Then the surface is leveled so that the mesh is not visible. The dried treated wall is putty with Ceresit ST-16 primer, and after drying, it is plastered with decorative mortar.

Installation with expanded polystyrene

Installation of the Ceresit VWS system on expanded polystyrene, which has a low vapor permeability, is desirable for buildings with good ventilation, which will eliminate excessive moisture. It is clear that such a system is not shown for baths or swimming pools. Facade decoration on expanded polystyrene can be made of any materials.

The system of insulation of facades on expanded polystyrene Ceresit consists of two bases - installation of a wall and installation of a basement. So in the case of a wall, the first layer is glue, on which the expanded polystyrene plates are attached. Then a mineral wool notch is applied, and all layers are reinforced with dowels.

After the glue is completely dry, a base layer of plaster is applied on top of the insulation, onto which a reinforcing fiberglass mesh is stretched. Finally, the wall is primed and plastered with a decorative compound.

In the case of a plinth, a waterproofing layer is applied to the wall, on which extruded polystyrene foam is glued. Further, the base is sheathed with any materials at will. In general, the decorative plaster of the Ceresit system can be mineral, silicone, acrylic, etc.

Step-by-step instruction

The Ceresit system is not complicated. However, its installation must strictly comply with the established rules of the manufacturer. Consider the stages of work.

Complex preparation of the base

Insulation begins with an inspection of the facade itself, the roof structure and the basement. The walls and basement area are checked for various damages, any irregularities are eliminated.

Also, specialists study the general condition of the roof and cladding, including waterproofing coatings and a finishing facade layer. After inspection, the nature and volume of contamination on the enclosing structures is determined. Any problems found should be fixed.

Installation of a tile heat insulator

Installation of slabs starts from the corner of the structure. The first horizontal layer is placed on the perforated profile element. The height of the belt along the perimeter is 25 cm, the thickness is 4-8 cm. Products made of expanded polystyrene are glued with the "Ceresit CT-85" compound.

The slabs are installed three days after the preparation of the building. Dowels equipped with cartridges and washers are used as fasteners. Holes for dowelling are drilled either with a perforator or with a drill - the main thing is not to damage the surface of the previously mounted slabs.

Waterproofing and reinforcement mesh

First, a waterproofing compound is applied, on top of which a reinforcing mesh is placed. The corners of the slabs are insulated with a perforated aluminum corner. The dimensions of the corners are 25 * 25 * 0.5 mm. In addition, corners near windows, doors and raised edges must be well reinforced. The profile is mounted in a fresh layer of the composition, after which it is puttyed with it.

Further work is reduced to applying a reinforcing mesh to the adjacent wall to cover the profile, 10 cm in size. To glue the mesh, use "Ceresit CT-85" or "Ceresit CT-190".

The thickness of the second waterproofing layer ranges from 1 to 1.5 mm. If the system involves underground insulation, then after the creation of this layer, it is necessary to waterproof the areas underground using Ceresit materials of the CR, CP or BT group. As soon as they dry, the soil is poured back.

Finishing work

The finishing layer, as well as additional fasteners, is applied three days after laying the waterproofing insulation. First of all, it is necessary to prime the surface to be treated with the composition "Ceresit ST-16". After 3-6 hours, the structure is covered with one of the following decorative materials - Ceresit CT-35, CT-64, CT-36, CT-63, CT-137, CT-60.

Preparation of Ceresit CT-35 or CT-36 is carried out by mixing with water in a ratio of 1: 0.2-0.22. The ratio for Ceresit CT-137 is 1: 0.17-0.22. The duration of Ceresit CT-35 or CT-36 is 1 hour, CT-137 - 1.5 hours.

When insulating with mineral wool, the finishing materials must have good vapor permeability. Because of this, the finishing layer is allowed to be made only from polymer or mineral plasters. In the system, they are represented by silicone compounds.