Insulating plaster: application technology. Insulation of walls from the inside with warm plaster Plaster insulation

If you pay attention to the multilayer structure that you have to create indoors or on the facade of buildings to keep them warm, there is always a desire to simplify it. There should be modern materials that will help ease the work of plasterers and finishers, while increasing the speed of work. The main thing is that their quality does not suffer.

How can we replace, for example, the now common wall insulation with polystyrene plates? The solution was found - with insulating plaster. The process, I must say right away, is more laborious, but the effect of it is much higher. The use of building dry mixes for outdoor work has again shown a wide range of its use, and it is not difficult to purchase them in stores and on the construction markets today.

What can be offered

In order to replace 2 standard insulating layers, consisting of a fixing mesh and insulation, with insulating plaster, there are the following methods:

1. Take a dry mortar based on cement, but it should use perlite sand instead of the usual one. In addition, the composition should contain a powder of pumice, expanded vermiculite, expanded clay crumbs, sawdust or expanded polystyrene balls. These components give the plaster good insulating properties. Gradually, the sand is already being replaced by foam glass in granules.

1. Use special insulating plasterboards. They are usually not often used in construction due to distrust. Many cannot decide whether it can really become an alternative to conventional insulation or dry mix. Although manufacturers strongly advise this method of insulation, hoping that over time, builders will believe in it.

Advice: if you want to significantly reduce labor costs when insulating walls, then use plaster insulation boards.

1. Make your own insulating plaster.

In principle, it is not so difficult to make it, the technology consists in mixing the following components in a dry state:

• clay;
• paper pulp;
• sawdust;
• cement,

in the ratio: 1: 2: 3: 1/5 part.

If you do not use cement, which is also possible, the plaster will turn out to be too loose and soft, but quite suitable for decorative work.

1. Sawdust, where sawdust is the basis. You can also make this mixture yourself. Such mixtures should be used exclusively indoors, and during the drying period of the walls, ventilate them well for about 14 days.

1. In expanded polystyrene, polymer granules play a leading role.

Tip: Apply the insulating plaster to the surface in the same way as usual, using long trays and spatulas. Move slowly from bottom to top.

Where is used

Insulating plasters will be useful wherever it is necessary to insulate the internal and external walls of buildings, although the price of this material is not the cheapest.

It should be highlighted:

• thermal insulation and is not done so often;
• sound insulation when applied outside or inside;
• processing of door and window slopes, which allows not only to insulate them, but also to give them a beautiful appearance;
• protection of sewer and water supply risers from cold temperatures;
• thermal insulation of ceilings and floors.

Tip: Perform any construction work with a tool you trust.

Pros and cons

There are no perfect building materials, each of which has its own pros and cons. In the case of insulating plaster, it should be understood that it is simply inappropriate to compare it with ordinary plaster. Other methods of insulation are more suitable for her. The advantages of the material include the speed of work.

Common scheme:

1. Install a fixing grid on the working wall.
2. Then attach the insulation.
3. Then do the plastering work.
4. Finish the process with finishing plaster.

With insulating plaster:

1. Cover the working wall with insulating plaster.
2. Apply a finishing plaster on top.

The fact is obvious.

A simpler scheme is obtained due to the fact that:

• the master does not care about the final appearance of the surface, due to which he can prepare almost 180 m 2 of the surface in a working day;
• reinforcement mesh is not installed. Only used on corners and in difficult places;
• there is no need to level the wall before applying insulating plaster;
• the material has excellent adhesion, thanks to which it can stick to any wall, which is especially attractive for novice builders, for whom "adhesion" is the main stumbling block.

In addition, heat-saving plaster has good vapor permeability. Thus, the material surpasses foam in this indicator. It also lacks any "cold bridges" that are typical when attaching foam, when you have to use metal dowels.

So it turns out that the technology used today, which has been "perfected" over the years, is a multi-layer structure. At the same time, this material includes two layers in one layer - plaster and insulation.

Minuses

1. Weight. The mass of the layer has to pay for the speed of work, and it exceeds similar standard layers by 10 times, which requires the installation of a more solid foundation. The thickness of the layer will also be rather big - it exceeds, for example, from mineral wool almost twice.
2. Requires finishing. Such plaster is not a finish, which is applied on top after priming, or decorative plaster is used over it.
3. Cost of work. She, alas, is quite big for this building mixture.

Advice: use vermiculite insulating plaster when insulating hard-to-reach places and wooden floors, as well as where mold or mildew may appear, rodents and insects start.

Technology

Below is a detailed instruction of the process:

1. Prepare the surface by removing the remaining solution and dusting it. In special cases, it is possible to apply a penetrating impregnation or mesh to the wall to strengthen the structure.
2. Moisten the surface to be treated with plenty of water.
3. Prepare the mixture according to the instructions on the package. According to the recommendation, it will need to be worked out in 2 hours.

1. Apply the plaster in layers up to 20 mm thick. Each subsequent one - not earlier than in 4 hours.
2. The final result of the work will be visible after 2-3 weeks.

Advice: use insulating plaster for insulating plastic windows, which in this case will be able to reveal its potential.

Errors during work

1. The mixture is poorly prepared.
2. The term of its use is overdue, no more than 2 hours.
3. Laying is carried out with a layer of more than 20 mm, due to which the mixture slides off the surface.
4. The previous layer is not dried before applying the next one. It should be understood that in conditions of high humidity, in particular in autumn, the drying time increases.

Both old and modern houses do not have a high degree of thermal insulation. The reason for this is the thin walls of brick and reinforced concrete. These materials conduct heat quite well.

Over time, additional troubles are added to this - cracks in the walls, destruction of decoration and sealing of joints between panel plates.

The rise in the cost of utility bills makes residents of both private and apartment buildings think about changing the situation for the better.

The condition of the walls of the house is of no small importance for creating and maintaining a comfortable microclimate in the interior. Walls must keep warm, be airtight and vapor permeable. The facades of houses can be insulated both from the inside and outside.

External insulation is the most popular, as it does not imply a reduction in the internal usable area of ​​the premises. There are various options for insulating facades.

One of the methods for effective and inexpensive thermal insulation is the use of special building mixtures. This is the so-called warm plaster.

Material properties

Warm plaster is a dry mix consisting of hollow material, cement, glue and various plasticizers. Most of the volume of the mixture is occupied by the hollow material. Due to this, thermal insulation is carried out.

As a rule, the smallest granules of expanded polystyrene or foamed glass are used as a hollow filler.

The addition of plasticizers allows the cured mortar to retain a certain elasticity, which prevents the surface from cracking in severe frost or wall deformation.

Polymers provide mechanical strength to the finished coating. With their help, there is a reliable adhesion of the solution to the surface.

Cement is a binding ingredient for the constituent parts of the mixture.

This type of frost-resistant plaster has the following positive properties:

• affordable cost;
• vapor permeability;
• low thermal conductivity;
• waterproofness;
• strength;
• resistance to wall deformation;
• high degree of sound insulation;
• non-flammability;
• immunity to mold;
• ecological cleanliness;
• long service life;
• resistance to high and low temperatures;
• high adhesion to all materials;
• low specific gravity;
• high speed of surface treatment;
• no need for additional finishing.

Facade plaster after application to the surface has a presentable appearance. In terms of thermal insulation performance, it successfully replaces foam plastic coverings.

Warm facade plaster has certain advantages over other insulation materials.

These include the following:

1. Frost-resistant facade plaster, after being applied to the wall, creates a single monolithic layer. The absence of joints can significantly improve the insulating qualities.
2. The work on applying the solution is carried out in one stage. This allows the solution to be applied to the surface in one working day. This factor significantly reduces the cost of work.
3. Lack of cold bridges. When treating walls with warm plaster, no fastening material is used through which the cold passes to the main walls.
4. The simplicity of the technology makes it possible to carry out work on our own, without the involvement of hired workers
5. During surface insulation, deep drilling of the wall surface is not carried out. This prevents the construction of concrete panels from weakening and destruction from vibration.
6. It is not necessary to level the surfaces before applying the mortar. Disadvantages are eliminated immediately, in the process of applying plaster, which is an excellent filler for cracks and holes.
7. A unique opportunity to carry out insulation, restoration and insulation work on difficult surfaces. Due to the property of adhering to any material and retaining its shape, it is possible to cover any convex or concave surface with a solution of warm plaster.
8. Frost-resistant facade plaster has a composition that prevents the appearance and reproduction of insects, bacteria and fungi. In such a coating, mold will never appear, a colony of ants or a swarm of bees will never settle.
9. The environmental friendliness of the material allows it to be applied to the walls of glazed balconies. It is much faster and cheaper than traditional insulation using battens, glass wool and MDF panels.
10. The finished surface does not need to be sanded after drying. It looks like a rather fashionable and practical covering for a "fur coat".

Warming houses with this type of plaster is a fairly simple process that does not require the use of high technologies. At its core, this is a routine plastering job on the outer walls.

The building materials market offers various types of mixtures for house insulation. For external work, the most suitable is a frost-resistant mixture based on foam glass or expanded polystyrene filler.

Tools and materials

Goats, scaffolding or climbing equipment are used to insulate houses. Scaffolding and goats can be rented. It will be more difficult with climbing equipment, as it requires special skills.

For high-quality work, you need the following materials:

1. Warm plaster. Frost-resistant facade plaster is sold in 12 kg and 25 kg bags. Average consumption of the mixture per 1 sq. m of the base, with a layer thickness of 40 mm, is about 15 kg. As a rule, such a layer is sufficient to achieve the set goal of insulation and waterproofing.
2. Liquid primer. It is purchased in the quantity necessary for high-quality processing of the base. Material consumption for all types of surface is indicated on the package.
3. Self-tapping screws and dowels for installing beacons. Purchased at the rate of 6 sets per 1 sq. m.
4. Reinforcing mesh. It is necessary to strengthen the material when applying two layers with a total thickness of more than 40 mm. The area of ​​the mesh should be 30% larger than the area of ​​the base, taking into account its overlapping laying.

To insulate facades, there are enough tools that are in almost every home.

The list of such tools and devices is rather small:

• hammer drill with a set of drills for concrete and a mixer;
• hammer;
• screwdriver;
• steel spatulas 10 cm and 50 cm;
• notched trowel 40-50 cm;
• building level;
• paint brush;
• paint roller;
• a roller made of dense material;
• plastering rule;
• protective glasses and gloves;
• a container for mixing the solution (at least 30 l);
• mortar buckets;
• rope for lifting buckets.

In shops, you can inquire about the availability of rental construction equipment. Such specific devices as a plastering rule, goats or scaffolding may not be needed for decades later, and they will take up quite a lot of space.

Preparatory work

Before insulating the house, it is necessary to prepare the surface of the wall.

This process includes the following actions:

• removal of protruding fragments of reinforcement, brick and concrete;
• cleaning the surface from unstable old coatings, paint and bitumen;
• clearing interpanel joints from stone chips and old insulating material;
• sealing large cracks and holes with facade sealant;
• degreasing and dusting the base for insulation;
• treatment of the base with a liquid primer;

After the primer has dried, a thin layer of mortar should be applied to the base. This technique is used to improve the adhesion strength of the solution to the base. The layer thickness should be 3-5 mm.

You can start working in a day.

The application of the solution to the surface must be carried out in dry warm weather. The place of work must be fenced off with a warning tape. First of all, scaffolding, goats and climbing equipment are installed.

This is done as follows:

1. The mixture is poured from the bag into the container. Given the high consumption of material (30-40 liters of solution per 1 sq. M), you need to knead at least 12 kg of the mixture. Don't experiment and get creative by adding other substances. This can only spoil it.
2. Water is poured into the container. The proportions for the preparation of the solution are indicated on the packaging of the material. Using a mixer inserted into the perforator, the ingredients are mixed at low speeds. Depending on the volume of the material, this takes from 5 to 10 minutes.
3. The resulting solution should be left alone for 8-10 minutes, then mixed again. This is necessary to achieve complete homogeneity of the resulting material. Then you can use it. Liquid warm plaster retains its working qualities for 3-4 hours.

It should be noted that at high temperatures, the time for using the ready-made solution can be reduced to 1.5-2 hours. And, at temperatures above + 35 ° C, work is not recommended.

Laying is carried out in the following order:

1. Beacons are installed every 40-50 cm. This will make it possible to lay out a layer of mortar of precisely calibrated thickness. The recommended size of one layer of plaster is no more than 40 mm. Otherwise, the material will slip and deform under its own weight.
2. The mortar is applied to the wall with a wide trowel. For ease of use, you can first apply the mixture with a smaller spatula. After processing 1-1.5 linear meters of the wall, the surface is leveled with a rule. The excess solution is collected in a bucket and reused.
3. The beacons are removed from the holes. The remaining holes are filled with mortar, the surface is leveled.
4. If the thickness of the coating is more than 40 mm, a reinforcing mesh is glued on top of the first level. You can glue it on the plaster 2 hours after applying it to the wall.
5. A layer of plaster is applied to the mesh, its surface is profiled with a notched trowel. This will allow the second layer to firmly bond with the first.
6. The second layer of plaster is applied in the same way as the first. The work is carried out after it has hardened. This takes 1-2 days.

The treated wall is a gray, grainy surface. The owner of the house decides for himself what to do next - to leave the wall as it is, or to make it smooth.

For grinding, abrasive mesh and sandpaper are used. After sanding, the warm plaster hardens within 3-5 days, depending on the thickness of the coating applied.

Finishing

Finishing of the insulation applied to the facade of the house can be carried out in various ways.

For these purposes, the following materials are used:

• frost-resistant paint;
• ceramic tile;
• fake diamond;
• front thermal panels;
• granite chips.

Before finishing, the surface of the coating is primed and cleaned from dirt and dust.

The paint is applied with a roller or paint brush. It is better to paint a smooth surface with a roller. For a facade finished with a "fur coat", you need to use a paint brush so that the paint penetrates into all the recesses.

Coloring can be carried out in one, two or more stages until the color becomes even and uniform.

Ceramic tiles and artificial stone can be glued directly onto plaster. Its surface is dense and strong enough to support the additional weight.

For gluing, a cement-based mixture or frost-resistant acrylic mastic is used. Seams between tiles are filled with a special facade sealant. Cured joints can be painted to match the color of the material.

Facade panels are lightweight and have excellent thermal insulation properties. They can become not only a finishing material, but also an additional insulation.

They are attached to the surface with an adhesive solution. Convenient tongue-and-groove fastening allows for seamless panel joining.

Granite chips are applied to the facade using a spray gun or by hand. The basis of such a coating is a transparent varnish or paint.

In addition to undeniable beauty, granite chips will give the walls the properties of a very practical coating. On such a surface it will simply be impossible to write or scribble anything.

The insulated wall will serve the owners of the house for at least 25 years, protecting them from cold and dampness.

The construction of a warm and comfortable country house requires solving often very complex and contradictory problems. For example, to save on materials and, at the same time, not to increase your costs in the future when operating the house, to make the house warm and comfortable. Warm plaster can help in solving such a problem.

A somewhat unusual name accurately reflects the purpose of the material. At its core, it is a building mixture with thermal insulation properties. She acquires them through the use of materials with low thermal conductivity. The composition of warm plaster is usually as follows:

• porous filler - expanded polystyrene granules, perlite sand, foam glass (expanded glass), etc.;
• a binder mixture, which is usually cement, lime, gypsum and their mixtures;
• polymer additives - plasticizers, hydrophobizing, air-releasing, etc.

Familiarization with the composition of warm plaster allows you to understand what its good thermal insulation properties are based on. This is due to the presence of a porous filler, literally filled with numerous air bubbles. And he, as you know, is a good heat insulator. So it turns out that after applying warm plaster to the wall, it turns out to be, as it were, protected by an additional layer of heat insulator.

Properties of insulating plaster

The advantages of warm plaster are not limited to thermal insulation. The composition of the mixture itself suggests what possibilities this material conceals in itself.

1. Fire safety. Warm plaster with a mineral filler (perlite, vermiculite, foam glass) is not flammable at all and belongs to the NG class according to the classification system. The exception is heat-insulating plaster based on expanded polystyrene foam, it is combustible and belongs to the G1 group.
2. Ecological cleanliness. Traditional insulation materials (mineral wool, polystyrene) emit harmful substances, which is not the case with warm plaster.
3. Multifunctionality. In addition to the heat-insulating coating, warm plaster can serve as a material for decorative finishing and used as a topcoat. At the same time, it can be used to level surfaces.
4. Thermal insulation characteristics. It should be noted that heat-insulating plaster is not inferior in its properties to traditional materials. A layer of such plaster 5 cm thick is equivalent to laying two bricks or two to four centimeters of expanded polystyrene.
5. Physical characteristics. Heat-insulating plaster is much lighter than traditional plaster and during installation practically does not have an additional effect on the foundation and walls. In addition, it has high adhesion to all wall materials.
6. Practical application of warm plaster- it is easy to work with it and this does not require special qualifications.

About fillers

In many ways, the properties of insulating plaster are determined by the type of filler. The filler can be:

1. Sawdust. When using them, the cheapest, but least effective type of warm plaster is obtained.
2. Expanded polystyrene. Foamed polystyrene has good sound and heat insulation characteristics, has good adhesion. But this is a combustible material and at the same time it releases toxic substances.
3. Perlite is a material obtained from volcanic glass (obsidian) heated to 1100 ° C. At this temperature, obsidian begins to swell, becomes porous, a large number of air bubbles form in it, as a result of which the material acquires thermal insulation properties. Thanks to them, it finds application in various materials as an additive providing these characteristics. One of the use cases is called perlite plaster.
   The disadvantage of perlite is considered to be high hygroscopicity, which requires the use of additional materials to protect it during finishing.
4. Vermiculite. Mineral belonging to the mica group (the so-called intumescent mica). Materials based on it are able to withstand temperatures from minus 260 to plus 1200 degrees Celsius. During firing, it significantly increases in volume (up to 50 times), resulting in flaky particles. By its properties, vermiculite is similar to perlite, it is absolutely non-flammable and non-toxic.
   The disadvantages of a mixture in which vermiculite is used as a filler are the same as for perlite plaster - high hygroscopicity, which requires additional costs for protection.
5. Foam glass. This is foamed silica sand, the structure of which includes closed glass cells. Foam glass is a waterproof and fireproof material, very durable and does not shrink, does not need additional protection. However, thermal insulation plaster based on it is inferior in its characteristics to materials using perlite and vermiculite.

About application and protection

Warm plaster is used for interior and exterior works. As already mentioned, due to the porosity of the filler, air bubbles act as a kind of insulation. Moreover, warm plaster is usually used as an additional element of thermal protection, and allows you to save on heating in the winter and air conditioning in the summer.

The point is that insulating plaster will be applied in addition to the protection laid down in the design of the building. It is irrational to use it as the main protection. According to calculations, with a brick wall thickness of 51 cm, the insulating plaster should have a thickness of ten centimeters, with a smaller wall thickness, the thickness of the layer of insulating material should be even greater.

However, when using modern building materials (ceramic blocks, foam concrete), it is quite possible to reduce the required thickness of the plaster, since these materials, unlike bricks, themselves have good heat-shielding characteristics. However, even in this case, warm plaster will be useful precisely as an additional protection, increasing the overall thermal resistance of the building.

Options for obtaining thermal insulation plaster

For interior decoration, such material is convenient to use in places with complex configurations, as well as to increase overall thermal protection. By the way, it is quite possible to make a mixture for additional thermal protection yourself. Do-it-yourself warm plaster can be obtained in the following way:

• it is necessary to mix three parts of sawdust and one part of cement;
• then add two pieces of paper pulp;
• add water;
• the resulting mixture must be mixed to the state of a normal solution.

If it is to be applied to wooden surfaces, then it is necessary to fill the shingles, otherwise the material will not stick to the surface. A brick or concrete base must be pre-moistened before applying plaster to it.

The warm plaster obtained in this way, reviews of which those who used the described method of obtaining are very positive, resemble cardboard in appearance. Its heat resistance is four times higher than that of ordinary plaster

Another method of making warm plaster with your own hands differs from the above, and gives a universal material suitable for indoor and outdoor use. To do this, use:

• cement, 1 part;
• vermiculite or perlite, 4 parts;
• plasticizer;
• water.

All components are on sale, PVA glue can serve as a plasticizer, fifty to sixty grams per bucket of cement. Everything is prepared very simply. First, PVA glue is diluted in water, then it is necessary to mix dry cement with a filler and add water with a plasticizer, achieving a thick, but plastic mass.

After the mixture is ready, let it stand for 15 minutes, stir again and you can start working. Such insulating plaster, the reviews of which those who used it are commendable, are successfully used in various options for interior and exterior decoration.

Industrial materials

However, in addition to the possibilities of self-production, you can use the finished product. The industry successfully produces various types of similar material, for example, Knauf Grünband heat-insulating plaster. It is a plaster mixture (dry), intended for all types of work, based on sand, cement, filler in the form of expanded polystyrene (granules) and hydrophobic additives and has water-repellent and thermal insulation properties.

Another option could be Haunkliffe insulating plaster. It includes a composite filler (manufactured by the manufacturer), basalt fiberglass, sand, cement, polymer binders.

Warm plastering

A mixture, such as warm Knauf plaster, must be diluted before application. Dilute the entire volume (bag), observing the dosage and stirring time specified in the instructions. The result should be a plastic, lump-free mixture. She is ready to go in a few hours.

The surface must be cleaned of dirt and dust before applying the material to it; plastering can be done at a temperature not lower than + 5 ° С. Apply the ready-made mixture with a spatula and level (rub in) using a grater or rule.

It is not recommended to make the layer thickness more than 2.5 centimeters, if you want to get a greater thickness, then you need to make several layers in succession. The surface can be painted after two or three days. After 28 days, the layer acquires maximum strength, and the thermal insulation ability will reach its maximum value 60 days after drying.

Warm plaster is a group of finishing coatings for external and internal use, combining leveling, hydro- and thermal insulation properties.

Composition, brands and GOSTs

The composition of warm plasters can vary due to the insulating filler and the bonding base. Bulk material acts as a filler. materials with low thermal conductivity: expanded perlite, vermiculite, expanded polystyrene granules, foam glass. Some sources recommend sawdust, but they provide the worst quality coating, are prone to rotting and fire, and therefore are excluded from the review.

There is also a special type of warm plaster used for radiation isolation of medical premises. Barite plaster Contains crystalline barium sulfate, an X-ray absorbing compound.

Warm plaster for outdoor use made on the basis of cement grades M-500 or M-300. With a hydrophobic filler (foam glass, PPS, etc.), such a coating is not afraid of precipitation, temperature extremes and ultraviolet radiation. Insulation plaster protects the main layer of thermal insulation from negative weather conditions.

For interior decoration, mixtures are used based on lime and gypsum, which are not resistant to moisture.

Perlite is presented on the domestic market thermal insulation plaster following trade stamps:

All of them comply with GOST 31251 as materials with the highest degree of fire safety.

Release form

Ready mixes are produced in dry form in bags weighing 7-30 kg. Depending on the formulation, they may contain superplasticizers that improve the solubility of cement and increase the plasticity of the solution. At home, such an additive is PVA glue or liquid soap dissolved in water. The consumption of the plasticizer is no more than 1% of the mass of cement in the mixture.

The shelf life of the mixed mixture is 30-90 minutes, so it is important to measure the volume of the prepared solution and the speed of work.

Specifications

Specifications warm plasters may vary depending on the filler.

Name	Meaning	A comment
Strength kg / cm2		An excellent indicator that allows you to use a mixture for filling gaps between bricks.
Volume weight kg / m3		For a mixture based on PPS granules.
Shrinkage mm / m	Missing	After drying, it does not shrink.
Thermal conductivity W / mK		It is 1.5-2 times inferior to synthetic and mineral insulation, 4-5 times superior to the usual cement-sand mixture.
Frost resistance, cycles		Average, offset by ease of repair.
Water absorption%		Additional moisture protection is required.
Vapor permeability		Maintains an even microclimate in the room, there is no dew point.
Fire resistance		On the basis of mineral granules - non-combustible coating, on the basis of PPS - slightly combustible.
Cost rub / m2		Material consumption is 2-4 kg / m2
Soundproofing	Partial	A high soundproofing effect is provided by mixtures with a fibrous filler such as the Haunklif basalt mixture.
Toxicity	Missing	Completely environmentally friendly material.
Life time		Depends on the area of ​​application. The outer coating serves less, the inner one is as durable as possible.

Unique qualities

The main advantage warm plaster its high plasticity and adhesion (adhesion to the surface) serves. It does not require perfectly flat walls and performs an additional cosmetic function when decorating a room.

It allows you to insulate slopes, cracks and internal corners, where installation of sheet and roll thermal insulation is difficult. There is no need for fasteners that act as "cold bridges" for other materials. The application speed of professional workers reaches 100 m 2 in 1 day.

Warm plaster combines environmental friendliness and durability, does not emit volatile compounds and dust.

Minuses

The main disadvantage warm plaster serves its raw weight. The plastering process takes place in several stages; it is impossible to apply a thick layer at once. The work is performed in 3-4 passes, maintaining the previous layers until firm "seizure".

The thermal insulation qualities of the mixtures are average, and the price exceeds the more energy-efficient PPS. It is not used as the main insulation in Russia, its thermal efficiency in our conditions is too low.

Application area

Thermal insulation of internal premises, soil wall decoration. The use of such insulation can reduce heat loss by up to 40%. Recommended material for additional thermal and sound insulation of walls and ceilings, window slopes, pipelines, sealing cracks.

Warm facade plaster It is used as a protective and decorative coating for the main thermal insulation: mineral wool, glass wool, foam plastic, PPS or basalt slabs. It protects the insulation from moisture, weathering, exposure to ultraviolet radiation and has a beautiful rough texture.

Installation methods

Instructions for preparing the ready-mixed mixture are usually indicated on the package. To prepare a solution at home, a binder (cement, lime or gypsum), water and a free-flowing filler are mixed in a 1: 1: 4 ratio. The mixture is thoroughly mixed until the consistency of thick sour cream, after which it can be applied to the cleaned surface.

Plastering of internal walls is carried out according to beacons, the thickness of the applied layer warm plaster should not exceed 1 cm in one pass. If it is necessary to increase the thickness of the coating, then the first layer must dry, otherwise the plaster will fall off under its own weight. It is impractical to make a layer thicker than 3 cm, the thermal insulation properties are reduced from this, and the load on the base becomes critical.

Facade insulation plaster applied in a thin layer: 3-4 mm in the first pass, no more than 1.5 cm in total after preliminary application and drying of the reinforcing layer.

Before applying warm plaster, the surfaces must be cleaned, the weak layers of the previous finish must be removed, and a primer must be applied. The mixture is applied to the wetted walls and ceiling so that they do not draw moisture from the solution.

Warm plaster for the facade and interior decoration is applied with a minimum layer of 25-30 mm, a reinforcing frame is required. If a thicker layer is required, then the solution is applied in 2 doses. Full formation of the layer is 4 weeks.

Important: It is forbidden to apply a layer of heat-insulating plaster at an air temperature below 5 o C.

If the walls are not porous, smooth, for example, monolithic concrete or sand-lime bricks, a reinforcing mesh is required. A layer of up to 30 cm is enough synthetic cloth, more - it is better to use a chain-link.

To comply with the geometry, work should be carried out along the beacons

For porous materials, warm plaster for aerated concrete, brick, foam concrete is applied in 2 stages. The first layer of a more liquid solution is required - spraying (1 hour cement: 1 hour sandstone: plasticizer according to the instructions: water to medium sour cream), this will help improve adhesion.

Insulating plaster for interior work under the tiles is prepared in a special way. A polypropylene mesh is mounted on a quick-drying mortar (glue), then it is nailed with long dowels to the load-bearing walls through the entire thickness of the leveling layer. And only after the glue is completely dry, you can make the tiling.

Warm facade plaster is easy enough to grind, you can treat the surface with an abrasive, primer and paint with paint for outdoor use, based on silicone or silicate. All types of ventilated facade systems can also be used with this type of finish. But decorative plaster and tiles for outdoor use on warm plaster are not recommended.

Methods for grouting mortar