Abstract: Technology for high-quality plastering of brick surfaces. High quality plaster High quality wall finishing

When hiring specialists to carry out repair work, you can often find in documents the phrase simple plaster or high-quality plaster.

Many beginners believe that these concepts indicate the quality of the plaster, but the main difference is the procedure for applying the solution.

In this article we will take a closer look at the nuances of processing using such mixtures; this procedure is quite complex, so not every beginner will be able to cope on their own.

Types of plaster

There are three varieties: simple and high-quality plaster. Each differs in operating technology and has its own strengths and weaknesses.

Simple plaster

This process is carried out in 2 stages:

• priming the surface to increase adhesion and protect against the formation of mold and mildew;
• spray

The procedure is carried out without weighing; checking by rule is also not required. After applying layers of mortar, grouting is done, corners, slopes and other protrusions are leveled with a trowel. The height of the plaster test should not be more than 12 mm.

Such work is usually carried out in buildings where people will not live. Surfaces that do not require good evenness or smoothness are plastered. Often basements, attics or utility rooms are treated in this way.

To carry out such cladding, you will need to apply three layers of the mixture: primer, spray and covering. Hanging, as in simple plaster, is not carried out. The main difference between improved plaster and simple plaster is checking the evenness using a rule.

Covering must be carried out using tools designed for this purpose. The thickness of all layers should not exceed 15 mm.

This treatment is often used for residential premises. It is used for interior cladding of buildings and public buildings.

High quality plaster

High-quality wall plaster requires compliance with certain standards.

The first step is to spray the surface, then apply a multi-layer primer and the final stage is coating.

The technology for such work requires the installation of beacons and hanging surfaces. With this treatment, the thickness of the cladding can reach 20 mm.

Such processing is used if it is provided for in the documents. The procedure is carried out in the offices of large companies or buildings with cultural purposes.

Stages of high quality plaster

This cladding is carried out in three stages:

• surface splash;
• cover.

Splash

For walls made of brick or concrete, the mixture is applied with a height of 50 mm, and for a wooden surface - 90 mm. Finishing of wooden walls is done only with shingles or using a mesh designed for this.

Spraying is carried out with a solution whose consistency resembles sour cream.

Before work, the surface is cleaned, and all defects are filled with a cement-sand mixture. Spraying helps improve the adhesion of the plaster layers to each other. If this procedure is carried out on a concrete wall, pre-treat the surface with concrete contact.

Padding

To create high-quality plaster, multi-layer priming is performed. The primer will increase the level of adhesion and completely.

The thickness of one layer should not exceed 5 mm. For gypsum or lime mixture, the permissible thickness is 7 mm.

Before applying the next layer, you must wait until the previous one has completely dried. You will also need to level each layer.

Experts can perform leveling without preliminary installation, but beginners must use them without fail.

Covering

With this type of plastering, covering is the final procedure. To apply the last layer, you can use a solution. The thickness of the final layer should not exceed 2 mm.

The coating is applied to the primer almost immediately, before it has had time to dry. Dry soil is pre-moistened with water using a sprinkler or a wet broom.

Features of high-quality plaster

When performing such work, the following nuances must be taken into account:

1. The total thickness of the solution should not exceed 20 mm. If it is necessary to increase the thickness, reinforcing mesh is installed on the surface.
2. If the spraying was carried out using a cement-sand mixture, then for priming and coating you need to use either the same composition or one based on cement and lime. Such solutions have some of the best moisture-repellent characteristics.
3. If you plan to plaster using a gypsum mixture using an improved method, then spraying is carried out with a composition with the addition of lime. Such solutions can be used in rooms with average humidity.

The process of high-quality plaster for leveling walls requires the mandatory installation of beacons. They must first be installed on the walls or ceiling. Lighthouses can be made of metal or mortar, which will be used for wall cladding. For more information about high-quality wall plaster, watch this video:

After such work, the walls will be ready for any further processing. They can be painted, wallpapered or covered with tiles and other materials. For such work, minor deviations are acceptable. If you have knowledge and experience, the procedure can be carried out easily and quickly.

Consider the order of the work being performed. First of all, the ceiling is processed and only then the walls are covered. In this case, finishing is carried out from top to bottom. The plaster can be either thrown onto the wall or spread.

Requirements for high quality plaster

When processing with your own hands, you must adhere to the following standards:

• after covering a surface of 4 m2, the wall should not have more than 2 irregularities, and deviations should not exceed 2 mm;
• The wall moisture content should be about 8%. It is quite difficult to determine this factor. If humidity is high, wet spots may appear on the walls or mold may form. With this turn of events, you need to let the wall dry;
• slope deviations for doors or windows should not exceed 1 mm. Deviations of curved sections should not exceed 5 mm.

After completion of the work, you will need to make sure that it is done well. To do this, an inspection of the treated wall is carried out. It should be even and smooth without visible defects on the surface. Requirements for different types of plaster can be seen in the following table.

What materials to use

To implement high-quality plaster, you need to use appropriate materials. The requirements for them are specified in the construction GOST and given in SNiP. Mixing the mixture for cladding is carried out according to the specified rules. The finished solution must meet the specified characteristics.

To carry out spraying and priming, the plaster mixture is passed through a sieve with a mesh size of 3 mm, for coating - 1.5 mm. Mobility varies from 5 to 12 mm. The water retention rate in a high-quality solution should reach 90%.

The composition of the solution for spraying and priming consists of sand with grains up to 2.5 mm, and for coating - up to 1.25 mm. Watch the secrets of good plaster in this video:

When purchasing a ready-made mixture, be sure to pay attention to its brand, production date and other characteristics.

Most often, documents, estimates or technical specifications related to repair work in a room, be it an apartment or a house, contain the following term - high-quality wall plaster. Such concepts, denoting a certain complex of technical operations, are often not deciphered. Therefore, there are cases when the essence of the assigned task is not clear, and often this point leads to misunderstanding between the employee and the customer.

It is important to know exactly and have an idea of ​​what needs to be done, how, and what requirements exist according to GOST and SNiP regarding the performance of such work. Thanks to this, you can avoid all kinds of conflicts and carry out home repairs at the highest level. This is exactly what we will talk about in the article. You will learn GOST standards for high-quality wall plaster, how it is performed and what its features are. In addition, SNiP (building codes and regulations) will be considered regarding high-quality wall plaster, the required layer thickness and the quality of the mixture itself.

Classification of plaster finishing

Based on Russian SNiP 3.04.01-87, which is called “Finishing and insulating coatings”, there are 3 classes of surface finishing with plaster, which differ in quality:

1. Simple wall decoration with plaster.
2. Improved.
3. High quality surface finish.

Important ! All relevant requirements and building standards for the quality of work, which are specified in the document, apply not only to manual plastering of walls, but also to mechanized plastering.

What is the difference between the finishing classes specified in SNiP? Each of them implies strict compliance with the rules and requirements of GOST.

A little about layers of plaster

Before describing the types of plaster based on quality, it is important to consider everything about the finishing layers. This information will be needed to understand the whole essence of the topic. What does the finish consist of?

1. First of all, the base is sprayed or prepared for further layers. For this, a solution of liquid consistency is used. It provides reliable adhesion (adhesion) of the surface to the plaster. In addition, the mixture gives the surface the ability to repel moisture. Recommended layer thickness is 3-5 mm.
2. The second stage, according to SNiP, begins with the application of primer. What is its purpose? It levels the main plane of the surface. When performing work, a solution of dough-like consistency is used. The thickness of this layer is 7-8 mm.
3. The next layer is the covering. It is used to smooth out small defects and smooth out the coating. This uses a mixture that has the consistency of sour cream. The recommended thickness of such a layer is around 2-5 mm. Based on the requirements of GOST 8736-93, the fraction of sand particles should not exceed 1.2 mm.

Important ! Another important point specified in SNiP is that when the total thickness of the improved wall plaster exceeds 20 mm, then the base must be pre-reinforced. A polymer or metal reinforcing mesh is suitable for this work.

Now let's talk about how the 3 types of finishes differ, based on the layers of the finished mixture.

Differences in quality of plaster

If we talk about SNiP for plastering walls, it is important to understand what the difference is between the finishing classes. For example, simple finishing is most often used in basements, warehouses, attics and utility rooms. Simply put, in all non-residential premises where there is no need to create a perfectly flat surface. In this case, the finishing layers are as follows:

• spray;
• 2nd layer - primer.

This allows you to hide the main irregularities without additional labor and financial costs. The maximum thickness of simple plaster walls is 12 mm.

Improved wall plaster is used in residential premises that are used by humans. It is important to make the surface smooth and beautiful, since it is constantly in sight. It is applicable for private houses, high-rise apartments, educational institutions, medical and public buildings. In this case, the coating consists of:

• spray;
• 2 layers - primer;
• 3 layers.

This way you can remove the smallest defects and irregularities, making the surface smooth and beautiful. The average total thickness of improved wall plaster is 15 mm.

High-quality surface plaster is the most technologically advanced. It is used for residential buildings, public, educational and medical buildings, as well as office premises where the requirements for plaster are increased. In cross section everything looks like this:

• spray;
• 2 layer;
• 3 layer;
• finishing layer.

The maximum layer thickness is 20 mm.

note! Leveling the walls by applying high-quality or improved wall plaster in accordance with SNiP occurs through beacons that are installed on the wall and serve as a guide for the work as a rule.

They are fixed in advance, before work begins. Metal profiles or the solution itself can be used as beacons.

What is high-quality wall plaster used for?

If the improved plaster is intended for leveling a wall, then the high-quality grade is used both for leveling the walls and for preparing the base for further processing. Which one?

1. Application of paints and varnishes.
2. Wallpapering.
3. Tiling.
4. Application of decorative plaster, etc.

Thanks to the quality control specified in SNiP, cladding work can be carried out at the highest level. It is only important to take into account GOST regarding the materials used.

The order of operations is also taken into account:

• first the ceiling is plastered;
• The walls are processed next, from top to bottom;
• Lastly come the floors.

note! The mixture is applied to the base in 2 ways: spreading and throwing.

But technology for performing work is not everything. It is important to find out which plaster is best for plastering walls, and what are the requirements of SNiP and GOST for the finishing material.

Necessary Requirements

To understand which plaster for walls is better, you need to familiarize yourself with the requirements for the material. All of them are described in GOST 28013-98 (clause “mortars”, section “general technical conditions”) and SNiP 3.04.01-87. Here are some of these technical requirements:

• the solution with which the surface will be sprayed and primed should easily seep through a mesh with a cell cross-section of 3 mm. The mixture under the cover should seep through cells with a cross section of 1.5 mm;
• the mobility of the solution should be within 5-12 cm;
• stratification of the solution, no more than 15%;
• the ability to retain water is at least 90%.

As for the plaster itself, it needs to be mixed with sand, the grain fraction of which is 1-2 mm. Solutions for spray primer should not have a sand fraction greater than 2.5 mm and greater than 1.25 for finishing. In addition, the purchased plaster must have a quality certificate and documents indicating: the date of preparation of the mixture, its brand, volume, type of binder, mobility of the mixture, there is a GOST and the price of 1 m 2 of the solution and its delivery.

It is important to know that plaster for walls can be cement-sand, or maybe gypsum. Cement mortar is used to treat the external walls of a building and wet rooms. If you need to plaster brick walls, it is better to do it with cement mortar.

A mixture of gypsum is used when it is necessary to level walls indoors in which the humidity is normal. The advantage of the mixture is that the work is completed much faster, since it dries faster. You can’t say which one is better, because it all depends on the situation.

Plaster can be simple, improved and high quality. Contrary to popular belief, these definitions do not relate to the quality of the material, but to the technology of work and finishing characteristics, which are regulated by the requirements and rules of SNiP and GOST. Let's look at the differences between improved plaster and other types of plaster finishes and the requirements that it must meet.

Differences between different types of plaster

Permissible deviations for improved plaster

Important! SNiP for improved plaster does not allow the presence of peeling, cracks, sinkholes, efflorescence, or visible traces of the tool used for grouting on the surface.

Requirements for the quality of the plaster compositions used

Quality control of the material and mortar used is carried out on the basis of GOST 28013-98 “Building mortars. General technical conditions".

According to GOST, a solution for improved plaster must meet the following requirements:

1. The solution intended for spraying and soil must pass through a mesh with a mesh diameter of 3 mm.
2. The solution for the covering layer must pass through a mesh that has a mesh size of 1.5 mm.
3. The sand used to prepare the solution must contain grains whose size does not exceed 2.5 mm in solutions for primer and spray and 1.25 mm for finishing.
4. GOST also regulates technical parameters such as mobility, delamination, water retention and strength.

Improved wall plaster is not a special solution, but a surface finishing method. It is distinguished by improved quality and better operating parameters. This method is often used for interior cladding of buildings.

The solution is well suited for brick or concrete surfaces. The requirements that such coatings must meet are specified in building rules and regulations.

This article will study in detail the technology for applying improved plaster and its main characteristics.

The main differences between improved plaster

It has a number of significant differences from other types:

1. The wall surface after this treatment is of better quality. In addition, the wall can be immediately painted or wallpapered.
2. According to the standards, the thickness of the layer of such cladding can reach 15 mm, the thickness of simple plaster is 12 mm. Improved cladding is thicker due to an additional layer.
3. According to the standards, when facing walls in this way, it is necessary to use construction beacons with the same thickness as the planned finishing layer.
4. The errors allowed with improved processing are lower than with simple finishing. Vertical deviations up to 2 mm per 1 m² are permissible. No more than 2 areas with defects are allowed per 4 m².

A comparison table of different types of plaster can be seen below.

Technological features

The stages of working with an improved mixture are the same as when applying other solutions. The first step is to spray the wall, then prime and apply the main layer of plaster. However, there are some differences:

• spraying is carried out with a liquid solution. It is applied to the wall and spread over it; there is no need to level it. In this case, the layer thickness should not be more than 5 mm;
• the soil is made from a thick mixture that looks like dough. Only 1 layer is applied with a thickness of no more than 8 mm. Sand particles in the solution should be no more than 2.5 mm;
• The covering is done in a thin layer of approximately 2 mm. The size of sand granules is no more than 1-2 mm. The density of the solution should be the same as when spraying.

Due to the small thickness of the improved mixture, it can be used for cladding almost any surface, even with complex terrain.

Areas of use

This plaster is used for interior cladding of various types of premises. It is also used for external treatment of various buildings and structures.

There are main areas where this technology is most often used:

1. Plastering brick walls and facades from different materials.
2. Cladding of various columns and cornices, built from a variety of materials.
3. Finishing of surfaces inside the building.
4. Processing of small buildings.

Improved wall plaster and the technology for its application are complex, so not every novice builder can do it on their own. The procedure consists of the following steps:

• surface preparation;
• preparing the solution;
• spray;
• padding;
• finishing layer or cover.

Preparing the wall

The technology for performing improved plaster begins with preparatory work. First of all, remove all excess from the wall. Afterwards all minor surface defects are filled

Before proceeding with plastering, it is recommended to treat the wall with a deep penetration primer. This will improve the adhesion of the mixture to the surface. Work continues only after the primer has dried.

Mixing solution ingredients

The facing for such a surface can be made of slaked lime and sand. The ratio of solution to water is 1 to 1.5. When adding sand, use 1 part water, 0.3 parts lime and 3 parts sand.

1. The following ingredients are prepared: water, sand and PVA glue. All materials will cost less than purchasing a ready-made solution.
2. 20 liters of water are poured into a large container.
3. Approximately 200 grams of adhesive is poured out; if necessary, the amount can be increased.
4. The composition is mixed.
5. Sand and cement are gradually added until the desired consistency of the solution is formed. For more information about applying the improved one, watch this video:

This recipe allows the solution to adhere well to the wall, thanks to the presence of PVA glue in the composition.

Even if the surface is poorly primed, the glue will prevent possible cracking and the mixture coming off the wall.

Also, adding glue will significantly increase the plasticity of the mixture, which will make it easier to apply the plaster solution.

When producing a solution, this recipe allows you to use a larger layer when applying. The maximum permissible thickness increases to 8 cm. In this case, there is no need to use construction material for reinforcement. This factor is extremely important if the walls have a large number of irregularities or when carrying out external work.

Sometimes, instead of cement, gypsum is used to create a solution. To this composition you need to add a small amount of PVA glue. For 10-15 liters of water you need approximately 100-150 grams of glue. This will increase the strength of the composition and its quality.

Spray

Pre-spraying is done with a weak solution.

This is an extremely important nuance, since it is used to prepare for priming.

Due to its liquid state, the solution can easily fill all cracks and recesses. This allows you to create a flat surface for subsequent work.

Spraying must be done carefully so as not to miss any irregularities. Then the result will be a good coating without cracking or coming off the wall.

Application of primer

After spraying, the wall is primed. The solution is applied with a trowel and then leveled with a trowel. You need to hold the tool at a special angle of 150° and perform movements first on the sides, and then from bottom to top. For more information about spraying, watch this video:

The thickness of the soil should vary from 12 to 20 mm. Evenness is checked using a rule. If defects are found, they are sealed with mortar.

To make sure that the primer was applied evenly, the rule is first applied to the wall horizontally, and then vertically and diagonally.

The soil is the main layer, which makes up most of its thickness. It is this material that allows you to finally level the wall, so it is extremely important to carry out this stage according to all the rules.

Final layer

The covering is performed using a special technology. It is applied, leveled, and then rubbed. For such work, you can use a pneumatic bucket or an ordinary brush and grater. Watch this video for more details:

First, the dried soil is moistened with a small amount of water. Using a brush, cover in several layers. Each layer is leveled using a trowel.

After the mixture dries a little, it is rubbed. To do this, use a wooden grater, and it must be pressed tightly to the surface. Using such a tool, circular movements are first performed, then vertical and horizontal.

The processing procedure is complex and requires skill and experience to complete. If the cladding solution was purchased ready-made, you must carefully follow all instructions from the manufacturer indicated on the packaging.

Often, a project, estimate, technical specification and other documentation related to renovations in a house or apartment contain such a concept as “high-quality wall plaster.” As a rule, documents do not have a definition of a term meaning a specific set of operations.

This often leads to a misunderstanding of the essence of the work and, as a consequence, to further conflicts between the customer and the work manufacturer. Only an accurate idea of ​​the level of quality of future work will allow you to avoid problems when renovating your home. This article will help you with this.

Finish classes

Russian SNiP No. 3.04.01/87 “Finishing and insulating coatings” defines three types of plaster finishing according to its quality:

• simple;
• improved;
• high quality

Note! The standards and requirements for the quality of plastering work outlined in the document are applicable for both manual and mechanized work. Each class of plaster requires compliance with certain rules.

They regulate the maximum permissible deviations from the design values ​​or conditions that are accepted between the parties in the relationship, by default.

Plaster layers

Before we move on to describing the types of plaster by quality, let's talk a little about finishing layers. This is important for understanding the essence of the topic.

First, the base is sprayed.

1. Its purpose is to ensure reliable adhesion to the surface of the walls of the following layers. For spraying, a solution with a liquid consistency is used. This makes it possible to fill in unevenness in the base, ensure strong adhesion, and hold all layers of plaster. Layer thickness 0.3/0.5 cm.
2. At the second stage of work, primer is applied. It is necessary for the basic alignment of the plane of the walls. When priming, a solution having a dough-like consistency is used. Its thickness can be 1/2 centimeter.
3. Third layer - cover. It is needed to level out small defects and smooth out the coating. A solution with a creamy consistency is used for it. The layer thickness should be 0.2/0.5 centimeters.

Note! When plastering any type, if the totality of all its layers exceeds 2 centimeters, the base surface must be pre-reinforced. This can be done using a metal or polymer mesh.

Types of plaster by quality

1. A simple type of finishing is used in basements, utility rooms, warehouses, and attics. In other words, in all non-residential rooms where an absolutely flat wall surface is not required.
2. Improved plaster is needed in rooms that are directly used by people. These can be residential buildings and apartments, medical, public, educational institutions, etc.

1. High-quality plaster is used for work in public, residential, medical, educational, office buildings, with increased coating requirements. In other words, when the design documentation directly indicates such a nature of the rough cladding.

SNiP defines the following features of plaster coating classes.

1. A simple type of finish should consist of two mortar layers - spray and primer. Their total thickness should be 2 centimeters.
2. The improved coating is applied in three layers and consists of spray, primer and cover. The total thickness of the finish should be about 5 centimeters.
3. A high-quality grade of plaster consists of four layers - spray, two primer layers and a topcoat. The total thickness of such finishing should approach 2 centimeters.

Note! The instructions say that the application of improved and high-quality plaster must necessarily be carried out along the guide beacons. They are installed on the walls before the main work and can be made from mortar or in the form of ready-made metal profiles.

A high-quality class of plaster is intended for leveling and smoothing bases for their further finishing:

• various paints and varnishes;
• wallpapering;
• facing with ceramic, porcelain stoneware, clinker, plastic tiles.

Quality control of this type of plastering work, carried out according to the minimum permissible SNiP deviations, makes it possible to carry out finishing finishing work at the highest level.

It should be remembered that the optimal order of performing the described operations is as follows.

1. First of all, the ceiling is plastered. Next, the walls are processed in the top/down direction. Floors should be leveled last.
2. Plaster mortar can be applied to the surface of the base in two ways: spreading it or throwing it on.

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Requirements for quality finishing

Deviations that are acceptable in terms of the quality of plastering work are given in tables No. 9 and 10, SNiP No. 3.04.01/87.

Permissible deviations during work

1. The difference in the plane of the walls from the vertical per 1 meter of their length is 1 millimeter. For the entire height of the room - no more than 5 millimeters. The planes of the walls from the horizontal, per 1 meter of their length - 1 millimeter
2. When doing the work yourself, keep in mind that the finishing surface can have no more than two irregularities of smooth outlines per 4 square meters. Their depth or height should not exceed 2 millimeters.
3. Deviations of door and window slopes, arches, pillars, pilasters from the horizontal and vertical should not be more than 1 millimeter.
4. The radii of curved elements and surfaces should not deviate from the design value by more than 5 millimeters. The question arises - how to check the quality of plastering work in this case? This must be done using a pattern template.
5. The width of the slopes should not deviate by more than 2 millimeters from the design value.
6. Deviations of the rods from the straight axis, between the angles of their intersection and bracing, cannot be more than 2 millimeters.

Characteristics of coating and base

The moisture level of stone, concrete and brick walls when plastering them should not exceed 8%. The adhesion strength of plaster mixtures (in MPa) during interior work must be at least 0.1. When performing external plastering work, this value cannot be less than 0.4.

Below is the permissible thickness of each finishing layer when laying multi-layer coatings (without the use of polymer modifiers).

1. The thickness of the spray on concrete, stone and brick bases is no more than 5 millimeters.
2. The amount of spray on wooden surfaces (including the thickness of the shingles) is no more than 9 millimeters.
3. The soil, consisting of a cement-sand mixture, should have a thickness of no more than 1/2 centimeters.
4. The primer layer, laid from lime, gypsum or lime-gypsum mortar, should not exceed 0.7/1 centimeter in thickness.
5. The covering of the rough plaster finish should be 0.2/0.5 millimeters.
6. The covering layer of decorative coating should not be more than 7 centimeters.

Note! Important information on how to check the quality of wall plaster. After completion of work, the surfaces should be inspected. They should not have coating peeling, cracks, deep scratches, efflorescence, cavities, or obvious traces of troweling tools.

Requirements for the quality of materials

These provisions are voiced in GOST No. 28013/98. “Building solutions”, in the section “General technical. conditions".

Also, the requirements for materials for high-quality plastering are given in table No. 8 of SNiP No. 3.04.01/87.

The ready-made plaster mixture, prepared independently or purchased at a concrete plant, must meet the following characteristics.

1. The solution intended for spraying and priming must pass through a sieve with a mesh cross-section of 3 millimeters. The mixture for covering or single-layer plaster should pass through cells measuring 1.5 millimeters.
2. The solution should have a mobility in the corridor of 5 to 12 centimeters.
3. Its level of delamination should not exceed 15%.
4. The water-holding capacity of the mixture must be at least 90%.
5. The strength of the coating must correspond to the value included in the project.

The plaster mixture must be mixed with sand having a fractional modulus of 1/2. Solutions for spraying and primer should not contain grains larger than 2.5 millimeters.

Sand for covering should have a particle size of no more than 1.25 millimeters.

The plaster mixture purchased at the factory must be accompanied by a document confirming its quality.

It states the following:

• the date of year and time (in hours and minutes) of preparing the solution;
• brand of mixture;
• type of binder;
• scope of delivery;
• solution mobility;
• the state standard is given;
• the price of a cubic meter of solution and its specific delivery are indicated.

Carrying out work in accordance with the regulatory document

Requirements for the implementation of high-quality plastering work are stated in paragraphs No. 3.1/3.17 of SNiP No. 3.04.01/87.

Surface preparation

Before plastering begins, the following operations must be carried out.

1. The premises to be finished must be protected from weather influences and precipitation.
2. There is hydro-, heat- and sound-insulation of surfaces, as well as leveling floor screed.
3. The joints and seams between the panels and blocks are sealed.
4. The junction areas of door and window units, as well as balcony blocks, have been sealed and carefully insulated.
5. Windows installed.
6. Embedded elements have been installed.
7. Test runs of the heating and water supply systems were carried out.

Main works

1. Plastering should be carried out at a temperature of air and the surface being treated not lower than +10°. Air humidity should be no more than 60%. This temperature must be maintained in the premises at all times, no less than two days before the start and twelve days after completion of the work.
2. Plastering should be carried out on the basis of the PPR - the work plan for the construction of a building or structure.

Note! Applying plaster finishes to surfaces that have areas with efflorescence, rust, bitumen and grease stains is strictly prohibited. It is necessary to remove dust from the base before laying each layer of plaster.

1. The strength of the treated surfaces should not be less than the same finishing value.
2. Architectural elements protruding beyond the plane of the base, areas where wooden surfaces meet stone, brick and concrete structures, must be plastered using the reinforcing mesh fixed on them. Entirely wooden bases must be finished over shingled panels.
3. Brick, concrete and stone walls constructed using the freezing method must be plastered only after they have been thawed from the inside, no less than half their thickness.
4. When working on brick walls, if the air temperature is +24° or more, their surface should be moistened before plastering.
5. When covering the surface with single-layer plaster, it must be smoothed immediately after application. When using trowel units - after the mixture has set.
6. When laying a multi-layer coating, apply each layer only after preliminary hardening of the previous one. The soil must be leveled before it begins to set.

Conclusion

High-quality plaster according to SNiP ensures that no problems will arise during the subsequent installation of the finishing and its operation. Having studied the regulatory documents, you will be able to carry out the finishing yourself or effectively supervise the work of hired plasterers. By watching the video in this article you will gain even more useful knowledge.