Puttying walls under wallpaper with your own hands: step-by-step technology with photos and videos! Putty for external and internal work on concrete. Is it possible to apply putty to concrete?

Puttying concrete walls has now established itself as the most common method of leveling surfaces, in particular: walls, floors and ceilings made of concrete. Concrete is a very specific material.

Its main feature is its low degree of hygroscopicity. Concrete almost does not absorb moisture, which interferes with its adhesion to other building mortars.

Plaster or putty penetrates the pores and crevices on the surface to be finished, thereby providing adhesion, but in concrete there are very few such irregularities, so adhesion is quite difficult to achieve.

Properties of putty

The more elastic the putty, the better it penetrates into the pores of the base.

To putty concrete surfaces, it is necessary to use specially designed building mixtures. Putty for concrete must have the following properties:

Elasticity. The material must penetrate into all pores concrete surface. The better the elastic properties, the easier it is to work with such a solution.
Thixotropy is the ability of a putty to liquefy when applied and increase viscosity when drying. Please note that when kneading the mixture will seem slightly liquid.
Frost resistance. Since putty is often used on outdoors, it must be frost-resistant.

Putties for concrete should set quickly, form a very durable layer, not shrink, so that the surface does not crack due to the load, and cracks and other defects do not form in the future.

The waterproofing properties of the mixture play big role when working with concrete and give the opportunity not to do separate layer waterproofing.

Types of putties

Cement mixtures are less elastic than gypsum

As a rule, when working with concrete, the following types of putties are used:

Cement. This is the most popular type of mixture in question. Its basis is cement, most often grade M-400 or M-500. The positive side is good water resistance. TO negative aspects This may include a lack of elasticity and, as a consequence, the appearance of cracks after some time due to shrinkage. This concrete putty is used for finishing walls outside the building, rooms with high humidity and work with concrete floors.
Plaster. The basis of this material is gypsum. Due to the gypsum mixture, it occurs natural circulation moisture. Positive features include good thermal insulation, fire resistance, environmental friendliness. The disadvantage is fragility. This mixture is used for interior finishing. It is not recommended to use this type of putty in rooms with high humidity (bathroom, shower, swimming pool).
Acrylic. The basis here is acrylic. This is a universal putty, it is suitable for both external and interior works. Due to the good appearance of the finished surface, acrylic mixture is often used for finishing ceilings without subsequent painting.

To increase the adhesive properties of the working surface, it is recommended to treat the surface with primer before applying putty. In our case, when working with concrete, it is better to use concrete contact. However, when choosing a primer, you should pay attention to what kind of work: internal or external, it is intended.

Technical characteristics of putties

Before purchasing building material it is necessary to study all its technical characteristics.

Water consumption, layer thickness, color, viability, drying time of concrete putty depend on the brand of the mixture itself.

The most popular for working with concrete floors are brands of the following manufacturers:

Putty application technology

Move the grater with the mixture from bottom to top

It is necessary to putty concrete walls, ceilings and floors in several stages. First of all, you need to prepare work surface, remove the old coating (flaking paint, plaster, putty), thoroughly clean and degrease oil stains. Cracks on the plane should be widened if necessary.

If it is necessary to repair any defects, we use cement mortar and wait for it to dry completely. After this, using construction vacuum cleaner remove dust and dirt.

After treating the concrete surface, apply priming. It is recommended to apply two layers of primer, allowing each layer to dry. It is convenient to apply the primer with a long-haired roller or a wide brush. To simplify the application of the liquid, you can use a spray bottle.

Now you can proceed to the process of mixing the solution. How to make putty? Take a mixing container (bucket, deep basin), pour water. Usually the proportion is 5 liters of water per 25 kg of putty (1:5).

The finished solution is applied by throwing

For stirring without lumps we use electric drill with nozzle. We lower the mixer into the water and begin to mix, gradually adding the mixture. The resulting solution must be used within 3 hours after mixing.

Apply the prepared solution by throwing it onto a plane and further distributing it using a spatula. To make the surface more durable, you can use reinforcing mesh or fiberglass. After the first layer has dried, the second should be applied. In this case, the direction of each subsequent layer changes to perpendicular to the previous one.

The concrete putty finally dries in about a day. At the final stage, we rub the dried but not completely dry surface with sandpaper, using a grinder or a special grater. For more information about puttying walls, watch this video:

It is recommended to perform all work in bright light. This makes it possible to see any unevenness and marks left by the spatula and remove defects in time. Only by following the technologies for working with putties can you achieve ideal surface. Also, the most important thing is to approach the choice of the material itself with great responsibility, not to miss a single stage when preparing the surface and distributing the putty itself.

moyastena.ru

Starting and finishing putty on concrete walls

Puttying concrete walls is not an easy task, but if you put in some effort, you can do everything yourself. In this case, the concrete wall will look perfect. Before starting this process, it is necessary to properly prepare the base of the walls. They must be completely cleaned of dirt and dust, mold and mildew. You need to get rid of the old wallpaper, and if there is old putty under it, then you need to get rid of it too.

After cleaning the walls is completed, you can begin treating the walls with a primer. This must be done in order for adhesion to concrete wall was strong.

The choice of material to be used for plastering concrete walls depends on the quality of the concrete walls and how the work will be carried out in the future after the plastering of the walls is completed.

What will be needed to ensure that such work is carried out as efficiently and quickly as possible?

Container (it must be perfectly clean).
Spatula 450 mm.
Spatula 40 mm.
Mixer designed for construction work(if you don’t have one, you can just use a drill with a whisk attachment).
Nylon mesh, the size of the cells is 2 x 2.

All these tools can be purchased at any hardware store.

If the walls are not even, then it is necessary to carry out the procedure of leveling the concrete walls. This is done using starting putty, and a nylon mesh is used. As for the preparation of this material, everything must be done strictly according to the instructions that come with the putty. Take a clean container, pour water into it, then add the dry mass of putty (this must be done in this order, and not vice versa), after which it is all thoroughly whisked until you get a consistency that resembles thick butter. Doing this yourself is not at all difficult.

Starting wall putty

Now you can start puttingtying the concrete walls. With your left hand, take a 100 mm spatula and collect material from the container. Then it is applied to a 450 mm spatula, it should be wide and should be held right hand. The material is applied to the concrete wall with a light movement of the right hand in a thin layer. The strip should be equal to the width of the nylon mesh. All this must be done from floor to ceiling, after which the mesh must be glued to the treated area. The putty layer is applied so that the mesh of the initial putty is completely covered. As for the next mesh sheet, it needs to be laid exactly overlapping the previous sheet. This is how you should putty the concrete wall of the entire room.

You should wait until it all dries completely, this can take up to 2 days. Then you need to get rid of all the unevenness with sandpaper, and for this purpose you can use an abrasive mesh on a special platform grater. After the sanding process is completed, you should carefully remove the dust using a vacuum cleaner or a damp cloth. If you skip this stage of work, the consequences can be very negative. We must take into account the fact that there are no trifles in this process.

Return to contents

Final wall putty

Now it’s time to start the main work. The material for this is made in the same way as the starting material; you must strictly follow the instructions indicated on the packaging. The consistency of the putty should be similar to thick sour cream, only a little thinner.

A thin layer is applied to the walls light movements with your hands from right to left (or vice versa), the thickness of the layer should not exceed 2 mm.

Then, using a 40 mm spatula, the material is leveled behind the pipes and in other hard to reach places.

It often happens that a person who does not have experience in such work does not perform putty in the best possible way. There is nothing wrong with this, as you should simply repeat this procedure. Only at the second stage the material is applied with a thickness of 1 mm, from top to bottom.

After everything is completely dry, a new sanding is necessary, and then you need to get rid of the dust. At the final stage of work, the wall should be coated with a primer; a velor roller is very suitable for this. All this must be thoroughly rubbed; the presence of drips is completely unacceptable.

At this point we can consider that all work has come to an end and begin gluing the wallpaper. It becomes clear that there is nothing overly complicated in carrying out such a process; everything can be done independently. And you need to take into account that if you entrust such work to specialists, it can be very expensive and the quality of the work is also not guaranteed. But it should be borne in mind that all materials that are needed for such work must be of the highest quality. The use of inexpensive and low-quality materials can lead to the need for repairs very soon. Therefore, it is better to do everything right away in a high-quality manner and be calm.

moyagostinaya.ru

Puttying walls - what you need to know about applying putty + Video

Wondering why you need decorative putty walls and ceilings, you should delve into the process itself in detail. It doesn’t matter whether you do the work yourself or invite specialists - knowledge about the technology and our advice will help you get the highest quality finish.

Types of putty - from simple to complex

Depending on the condition of the surface, it is possible to apply one layer of putty or combine several. For example, for flat wall with defects within 1–2 mm, a layer of finishing putty will be sufficient, but a problematic surface with more serious defects will first have to be treated with a starting composition. But more about everything.

Puttying concrete walls - technology for applying mortar to the base

Before starting puttying, the surface of the wall should be thoroughly treated with a primer. Types of primers may differ depending on the base material and its purpose. One of the most important properties is the depth of penetration into the structure of the material, and the deeper, the better the quality of the coating.

The process of applying putty to the base is the same regardless of its type. In fact, it is not difficult to putty walls; the most important thing in this case is practice, which can be obtained after processing several square meters. To do this, you will need several spatulas of different widths and a flat container from which it will be convenient to scoop up the putty. Don't forget to purchase an angled spatula, which is easy to handle external and internal corners.

First you need to prepare the material if you purchased the putty in dry form. Instructions for preparing the solution are usually found on the packaging itself. It is very important to act in full accordance with it and remember that the dry mixture is poured into the water, and not vice versa. You need to mix using a construction mixer or conventional drill with a special nozzle. Part of the prepared putty is poured into a container, and the rest of the solution is covered with a lid so that it does not dry out.

A small spatula is needed to apply putty onto a large one; it is also useful for treating hard-to-reach areas of walls. When a large spatula is prepared, the putty is applied to the wall. When leveling, you can lightly press the tool blade with your left hand.

The spatula is held at a certain angle to the surface, which can be adjusted to achieve the desired layer thickness - the greater the angle, the smaller the thickness.

Puttying the walls is done with movements in different directions: vertically (from top to bottom) and horizontally (from left to right). After the composition has set, it can be slightly washed out with a primer to eliminate unevenness and sagging. When the first layer is completely dry, it is sanded with fine sanding tape and leveled.

The second putty layer can be applied after preliminary priming and drying of the first, or without preparation. It is still preferable to apply a primer, since the solution applies more evenly, and it also becomes possible to make a very thin layer. If you putty without preparation, the first layer will take moisture from a fresh portion of the solution, and this will make it thicker and more stubborn.

After about a day, when the surface has dried, sanding begins again. For it to be of high quality, this process must be performed with good lighting(spotlight on a rod or a powerful hanging lamp), which is directed at the wall at an angle. Sanding belt For convenience, they are put on a special block. After treatment, there should be no defects on the surface (scratches, roughness, sagging, etc.). Ideally, the wall will resemble white sheet paper.

When is puttying with reinforcing mesh used?

As a rule, putty with reinforcing mesh is required in cases where there are too large differences in the surface of the walls. The use of serpyanka makes the surface more durable and reliable, and it is also an excellent barrier to the formation of new cracks on painted surfaces (they may simply not be visible under the wallpaper). Cracks can even form on concrete foundations, for example, at the joints of slabs panel houses, which will certainly reveal themselves over time.

The serpyanka is attached to the base with glue, which is applied to its surface with a brush or roller, after which the mesh is pressed tightly to the base and coated with glue again, but on the other side. When the serpyanka has dried, they begin to putty.

There is also another way to attach reinforcing mesh. In this case, it is immersed in a layer of putty previously applied to the wall, leveled and another layer is applied on top, which will completely cover the mesh. Experts consider this method more preferable, although for an inexperienced person it may seem more difficult.

remoskop.ru

How to properly putty concrete walls?

Puttying of concrete walls can be done in different ways, much depends on the evenness of the concrete wall (that is, on the layer) on the room where it is located (there are wet rooms, it is better not to use gypsum putties there).

Concrete walls can be almost flat; in this case, you can only use finishing putty,

may not be even, you will have to set up beacons, and use putty and starting

and finishing (the beacons are not only plastered, but also puttied with starting putties).

You need to decide on all this at the beginning.

If immediately finishing putty:

We clean the walls from dust and dirt.

Drying primer.

The putty is applied to the walls with two spatulas, or rather, with a short spatula, we apply the mixture onto a large spatula and stretch the putty through it.

The chatel, relative to the wall, is held at an angle.

Drying, polishing.

If by beacons:

Perhaps a mesh will be needed, perhaps not, it all depends on the layer.

We work from the bottom up.

After drying the starting putty (this may take a week or more), sanding and removing the dust.

Primer for finishing putty with drying.

Drying and polishing.

It is also important to consider that at the finish line, if there is wallpaper (this is for example), then primer before the wallpaper and dry again).

www.remotvet.ru

Ceiling putty for concrete

Indoor renovation requires a lot of effort and patience, so most amateur craftsmen choose simpler and cheaper options. Possible way finishing the ceiling space - cover the surface with paint. Carrying out this type of work does not require special knowledge or construction experience, and the process itself does not take much time. Considering that most apartments have concrete ceilings, the question of how to prepare it for painting becomes relevant.

Is it possible to paint a concrete ceiling without putty?

To ensure that the ceiling space has an ideal appearance after painting, it is recommended to paint an absolutely flat surface. Even minor cracks and holes will become even more visible after painting. Putty is designed to eliminate unevenness, cracks, chips and other defects. Therefore, if on concrete slabs There are no visible flaws or large differences, then you can paint the ceiling without putty.

How to choose putty for a concrete base

Floor slabs, in fact, cannot be without flaws, finished products traces remain from the formwork structure, holes from air bubbles and much more. Therefore, an experienced puttyer uses two types of material: starting and finishing putty.

The starting composition is more rough; its main use is primary finishing. The material is plastic, so it is easy to apply and level. At significant defects It is allowed to apply the starting mixture in a layer of up to 1.5 cm. This material is not capable of making the base perfectly smooth, but it can act as a base for the finishing coat.

The finishing mixture eliminates any ceiling defect and makes the surface absolutely smooth. This is achieved by finely grinding the powder. The composition can be applied in a layer of up to 3 mm. After drying, the composition should be sanded. There are universal putty mixtures suitable for both starting and finishing finishing.

To perform high-quality preparation of the ceiling space for painting, it is better to choose both the starting and finishing mixture of the same trademark. This greatly improves the adhesion of materials to the surface and to each other.

It is necessary to consider the conditions under which painting will be carried out. For example, in rooms with high humidity It is necessary to use compounds that have water-repellent properties.

While learning the basics of puttying a concrete ceiling, we must not forget about the safety of the material. It is worth carefully studying the composition of the mixture for the presence of substances harmful to humans and the environment.

Read also: How to choose putty for the ceiling

Preparing the concrete base for painting

Concrete slabs can have a flat surface; in this case, the concrete ceiling is painted with acrylic or water-based paint without putty. However, this is very rare, and you can perform high-quality preparation of the base for painting as follows.

Cleansing

Before alignment you need to remove old whitewash, plaster or paint.

To remove whitewash, simply moisten the surface with plain water and leave for 20 minutes. After this time, the whitewash is easily removed. Rewetting can be done if necessary. It is best to clean off whitewash with a spatula, but sometimes it is simply erased or washed off with a sponge.

Take off old paint a little more difficult, but you can’t leave it, since in this case the adhesion of the putty to the surface will be much worse. You can remove the paint using a spatula. Clear painted ceiling more durable compounds can be removed by heating with a hair dryer, after which they clean it sandpaper.

Old concrete ceiling plaster also needs to be removed, paying attention to places where the material is peeling off. To work, you will again need a spatula, only in this case the tool should be made of a thicker material that will not allow the working surface to sag.

Knocking down sagging and sealing cracks

Concrete floor slabs in most cases have protrusions or overhangs. Preparing a concrete ceiling for painting with water-based or any other paint involves eliminating these defects with a hammer and chisel. To make the work easier, you can use a hammer drill.

There may be cracks in the ceiling, these also need to be puttied. In order for the material to hold well, the crack should be widened to 3-5 mm. Then the recess is cleaned of dust and covered with a layer of primer. After it dries, it is covered with putty or sealant.

Surface priming

Before you putty concrete ceiling Before painting, the entire surface must be primed.

It is best to use a primer at this stage. deep penetration. This composition will provide good adhesion main surface and finishing material. The primer composition is applied in several layers, each of which is thoroughly dried. Optimal time for the next layer to dry - 30-40 minutes. The primer is applied to the ceiling with a terry roller; in hard-to-reach places it can be painted with a brush.

Concrete base putty

After all layers of primer have completely dried, you can begin leveling the ceiling with putty.

First of all, at this stage, the joints between the floor slabs should be sealed. For this purpose, a material containing gypsum and sickle tape is used. The seam is puttyed and covered along the entire length with serpyanka, the width of which does not exceed 5 cm. The tape is pressed well to the surface and puttying is repeated.

Next, they begin to apply the starting mixture, the main purpose of which is to level the base. It should be borne in mind that ceiling putty for concrete is used only to eliminate minor differences. The mixture applied in a layer of more than 2 cm will not adhere well.

Puttying the concrete ceiling begins from the corner, the composition is distributed over the ceiling using a spatula. You need to press the tool tightly enough to fill all the existing recesses. The mass should be well leveled and left to dry.

The dried putty composition is rubbed with an abrasive mesh and another layer of the starting mixture is applied, which also needs to be dried.

The dried layer must be coated with a primer. It will increase the adhesion of the starting and finishing coating.

The finishing composition is characterized by greater plasticity, which makes it possible to give the base ideal smoothness. The mixture is also applied using a spatula, but strong pressure on the tool should be avoided.

To ensure even coloring, finishing coat need to be sanded using sandpaper or a fine mesh.

Read also: Sanding the ceiling after puttying

You can paint a concrete ceiling without putty or prepare it for painting yourself, without the help of professional finishers. The main condition is to follow certain rules and technology for applying solutions, and also not to forget about safety precautions.

Puttying a concrete ceiling with your own hands - video:

remontcap.ru

External putty for concrete: technology and manufacturers

Construction of any building structures not without aesthetic defects. Their elimination is desirable not only during processing internal surfaces premises. The facades of buildings, especially those made of concrete, also need to be decorated. They help solve a similar problem with putty for exterior work. They create the basis for subsequent cladding and improve the quality of facades.

Purpose

Multi-component putty is designed to eliminate defects, form smooth, even, durable surfaces of concrete building facades and prepare them for decoration. It is also used for internal finishing operations. Additional options, acquired by the facade - increasing heat and sound insulation, ensuring acceptable vapor permeability and waterproofing of walls, as well as frost resistance.

When wondering why decorative putty of walls and ceilings is needed, you should delve into the process itself in detail. It doesn’t matter whether you do the work yourself or invite specialists - knowledge about the technology and our advice will help you get the highest quality finish.

Types of putty - from simple to complex

Depending on the condition of the surface, it is possible to apply one layer of putty or combine several. For example, for a smooth wall with defects within 1–2 mm, a layer of finishing putty will be sufficient, but a problematic surface with more serious defects will first have to be treated with a starting compound. But more about everything.

Starting puttying of the base - this stage of work is carried out with a special starting material to eliminate large differences in surfaces, hide grooves, holes, etc. This is a rough treatment of the walls, after which you can get a smooth but porous surface. The layer thickness can be quite large - up to 1.5 cm. The material can be applied in several layers, but with pauses for drying. In order to prepare the base as efficiently as possible, the entire surface of the wall is treated, and a reinforcing mesh is used. The putty adheres much better to a base “lined” with mesh, and in addition, you will avoid the appearance of cracks in the future.
Puttying the base using beacons - this stage of work is similar to the starting putty, however, the entire process is carried out with the participation of special beacons, which are a wooden, plaster or metal lath. Beacons are installed in a vertical plane under the level, and in a horizontal plane they are lined up in one line. With the help of such devices, the process of leveling walls is much easier and faster. However, puttying on beacons is not used so often, since this process is more expensive, and the quality of the surfaces is practically no different, of course, if the work is performed by professionals.
Final puttying of the base - at this stage, putties are used that differ from the starting putties in a finer grain fraction. The composition is applied over the starting putty after it has dried and undergone additional processing. After grinding, a smooth, crack-free and pore-free surface is obtained, which appearance resembles an egg shell.
The material is applied in a fairly thin layer (1–2 mm), repeating the previously prepared plane of the starting putty. Only with its help can you obtain a perfectly flat surface, so this stage of work cannot be excluded in order to save money. It is desirable that the base be white, in this case it will not show through the light-colored wallpaper.
Puttying cracks is one of the stages of preparing walls for putty. For this purpose they are used gypsum mixtures, which are applied to the surface to be treated with a simple metal spatula. To make the process more effective, the cracks are increased in depth and width in order to remove all cavities. Also, cracks should be treated with a primer that has deep penetration properties in order to strengthen the damaged surface and increase its adhesion to the putty. You can use a brush for this.
You can start puttingtying only after the primer has completely dried. For these purposes, you can use alabaster or plaster - they dry within half an hour. However, these materials are not elastic enough, so they are inconvenient to work with. Can be used modern materials, for example, satengypsum, which takes longer to harden but has excellent elastic qualities.
Mechanized wall putty is a separate type of putty, which differs in the process of applying solutions. In this case, special machines are used that high pressure spray plaster mixtures. The work is completed very quickly, but a lot of equipment is required, so it is rational to use mechanized putty only on large areas.

Puttying concrete walls - technology for applying mortar to the base

The process of applying putty to the base is the same regardless of its type. In fact, it is not difficult to putty walls; the most important thing in this case is practice, which can be obtained after processing several square meters. To do this, you will need several spatulas of different widths and a flat container from which it will be convenient to scoop up the putty. Don't forget to purchase one that is easy to handle external and internal corners.

First you need to prepare the material if you purchased the putty in dry form. Instructions for preparing the solution are usually found on the packaging itself. It is very important to act in full accordance with it and remember that the dry mixture is poured into the water, and not vice versa. You need to stir using a construction mixer or a regular drill with a special attachment. Part of the prepared putty is poured into a container, and the rest of the solution is covered with a lid so that it does not dry out.

The spatula is held at a certain angle to the surface, which can be adjusted to achieve the desired layer thickness - the greater the angle, the smaller the thickness.

After about a day, when the surface has dried, sanding begins again. For it to be of high quality, this process must be performed in good lighting (a spotlight on a rod or a powerful hanging lamp), which is directed at the wall at an angle. For convenience, the sanding belt is placed on a special block. After treatment, there should be no defects on the surface (scratches, roughness, sagging, etc.). Ideally, the wall will resemble a white sheet of paper.

When is puttying with reinforcing mesh used?

As a rule, putty with reinforcing mesh is required in cases where there are too large differences in the surface of the walls. The use of serpyanka makes the surface more durable and reliable, and it is also an excellent barrier to the formation of new cracks on painted surfaces (they may simply not be visible under the wallpaper). Cracks can even form on concrete foundations, for example, at the joints of slabs in panel houses, which will certainly manifest themselves over time.

Very often there is a need to level and strengthen concrete foundations. As is known, this material is characterized by high strength and durability, but sometimes its structure is disrupted due to wear, cracks and other unfavorable factors, in this case you need a durable and reliable finishing material. There are several options on the market: for floors, for walls and for cellular concrete, and when doing the work yourself, it is important to choose the best option.

Types of compositions for concrete foundations

Don't try to save money and use inexpensive options in the hope that the result will be normal. It is important to use exactly the mixture that guarantees reliability and durability, so depending on the type of work you need to choose a solution.

If reinforced concrete was cut with diamond wheels and the resulting seams need to be sealed, it is best to use an epoxy compound, regardless of the type of surface. This option will be discussed in more detail below.

Floor putties

As you know, any floor coverings are subject to increased loads, so concrete is often used as their basis - it copes with the task perfectly. But sometimes additional leveling of the surface is required before installing self-leveling floors or sealing the joints near the pipes (when diamond drilling of holes in the concrete for laying communications was carried out).

For these purposes, a two-component epoxy putty for concrete, which has the highest strength properties and a number of other advantages:

Excellent crack filling, potholes and other damage to the concrete surface.
Strengthening all adjacent areas, as well as joints and other critical areas on the surface.
Continuous finishing allows you to achieve almost perfect flat surface , which can be used as flooring. This is often done in warehouses and production premises, because, among other advantages, the frozen composition is characterized by high strength and wear resistance.
The solution perfectly resists most negative influences: moisture, detergents and various chemical components.
High adhesion ensures surface reliability and ensures that frozen solution will not peel off from the concrete.
Putty for concrete floors very quickly gains high strength values, which allows renovation work in the shortest possible time.

Advice!
Whatever brand of composition you choose, for best effect do not forget to pre-clean the surface and treat it with a primer solution.
This will improve adhesion, which has a positive effect on the durability of the coating.
The best solution is the Betonkontakt composition, which is excellent for preparatory activities.

It is worth noting that it is important to mix the components in the correct proportion - the manufacturer’s instructions are required to be followed, and in no case should you violate them.

Compositions for walls

If you need complete or partial finishing of concrete walls, you can purchase special composition, its price is much lower than that of epoxy options. In addition, working with such solutions with your own hands is much easier, because you do not need to carefully calculate the components for mixing.

Whatever option you choose, it is important that it meets the following requirements:

The composition must be suitable for both internal and external use, this guarantees its high strength.
The mixture should set quickly, this greatly facilitates the work and improves the result.
The composition must contain fiber fibers, this can significantly increase the strength of the finishing layer.
The hardened layer must have high waterproofing properties, this provides additional protection for the concrete. (See also article.)
High elasticity ready solution guarantees excellent adhesion and penetration into all surface irregularities.
The composition should not shrink during the drying process, this ensures high quality finishing.

Solutions for aerated concrete bases

Again, there are a huge number of products from different manufacturers on the market.

When choosing one or another option, it is worth checking that its properties meet the following criteria:

High adhesive properties, since the surface is quite smooth, and not every option will stick to it.
Moisture resistance – putty for aerated concrete should reliably protect the surface from high humidity and temperature changes. (See also article.)
Vapor permeability is a very important property that allows excess moisture to freely escape from the material.

Important!
For the best adhesion of the solution to the base, it is best to use a primer with quartz filler, it creates rough surface, which allows the solution to stick much better.

It is worth noting that products for concrete should never be used for aerated concrete, and vice versa. Materials have different structures and properties, which is why each of them has its own group of solutions.

Conclusion

It is worth noting that the choice optimal option The quality of the final result depends on the composition, so it is worth paying close attention to this issue. The video in this article will help you understand some of the features of this topic even better.

The level of quality of further repairs depends on how correctly the concrete walls are puttyed.
Sectional diagram.

Before puttying concrete walls, it is necessary to prepare them; for this purpose, a primer is used. This will be an excellent way to protect the base from fungus and mold. In addition to antiseptic characteristics, the primer can give the base excellent adhesive properties, which will help finishing materials firmly adhere to the surface. Priming will eliminate unwanted roughness.
If the base has a significant deviation from the vertical plane, then before puttying it is recommended to apply leveling plaster, which is done in 1 layer. Initially, it is recommended to set the beacons using T-shaped metal profiles, after which it is necessary to apply a plaster solution to the treated surface of the walls, leveling it using the rule.
Applying putty mixture

After the plaster has completely dried, you can begin to putty. However, initially the base should be treated with a primer, which will significantly improve the adhesion of the surface and putty. To do this, a deep penetration primer must be used. The material is applied with a wide brush or roller. The putty must first be done with a starting mixture.
This material is used when the surface has significant unevenness, and the composition is applied in a layer whose thickness should be more than 5 mm. The mixture should be prepared in a special container, the volume of which should be 25 liters.

The putty should be applied to the surface with a wide spatula; it is recommended to hold the tool at an acute angle in relation to the base. After the mixture has dried, the walls must be checked for evenness; a rule is used for this. If there are deficiencies, they can be eliminated using finishing putty. The finishing composition has a fine-grained structure, which is important in the process of subsequent grinding, which will be necessary to prepare for finishing works using decorative materials.
Sanding should be done after the surface has dried using sandpaper that has a fine abrasive layer. Afterwards, the base should again be treated with a primer, which will help bind fine dust and prepare the base for further work.
It is worth remembering that priming not only prepares the base by leveling it, but also rids the surface of dirt, dust, mold, fungal growth, as well as minor errors.

To putty concrete walls, the master will need the following tools and materials:
spatula (450 mm, 40 mm, 100 mm);

beacons;

plaster;

rule;

primer;

brush or roller;

putty;

container for preparing mixtures;

construction mixer;

rule;

nylon mesh (mesh size 2x2);

sandpaper.

Features of puttying

For significant unevenness, use not only starting putty, but also a nylon mesh that will reinforce the layer. It is necessary to start puttying using a 100 mm spatula, with your left hand you should take the pre-prepared mixture from the container, placing it on a wide (450 mm) spatula, which must be held with your right hand. Thin layer the putty should be applied to the surface of the base, the strip should be equal to the width of the mesh, the mixture should be applied from floor to ceiling. The mesh is subsequently glued to this area, and then a layer of the mixture is applied to cover the reinforced mesh.

The next sheet of mesh should overlap the previous one by about 3-5 cm. This method should be applicable until the entire surface of the walls in the room is covered.

After a couple of days, when the putty has completely dried, you can proceed to sanding. Afterwards finishing putty can be applied. This layer should have a thickness ranging from 1 to 2 mm. The finishing putty in hard-to-reach places should be applied with a 40 mm spatula. After drying, the surface should be sanded. Putty walls should be covered with a layer of primer, using a velor roller; during the work, the mixture must be rubbed well so that it does not leave streaks. These works completely prepare the base for further work, for example, wallpapering.

Important Terms

The concrete surface is a dense building base, but even it cracks and deforms over time. To prevent this from happening, it is recommended to protect the material. This can be done using putty. Composition for concrete base professionals advise choosing depending on the repair budget and the location of the work.

Concrete putty has the following purposes:
restoration of the base on which numerous defects have appeared;
leveling the surface before finishing;
heat and sound insulation of the room;
protection of the surface from aggressive climate conditions.

Characteristics

Specifications:
drying time – from 4 hours to 5 days, depending on the type of product;
surface waterproofing – 98%;
time to use the dry composition after dilution is 2 hours;
defrost/freeze – 35 cycles.

Requirements for putty

The following requirements apply to the material:
Thixotropy. The composition liquefies when used and becomes viscous when hardened.
Elasticity. This allows the product to penetrate into the pores of the surface.
Moisture resistance. This property should be present in a product that is used indoors with high humidity or outdoors.
Resistant to temperature changes if the product is used for outdoor use.

Varieties

There are several options for classifying concrete putty. Professionals distinguish types depending on the order of use - starting, finishing and universal. The starting composition is used to seal defects and smooth out sharp transitions. Finishing putties are applied to level the surface before finishing. Universal products are used both as a starting and finishing composition.
In addition, putty is classified according to its composition and degree of readiness.

By composition

The following types of putty are compatible with concrete:
Cement mixtures. Such compositions are in high demand among users. The product is used for interior and exterior work. Dignity – affordable price, disadvantage - the material shrinks, as a result of which the surface is deformed and flaws appear.
Gypsum compositions. Active ingredient– plaster. The product is used indoors. The product is not suitable for use outdoors or in rooms with high humidity.
Acrylic medium. This is a universal product that is suitable for all types of substrates, indoors and outdoors.
Epoxy composition. The material has improved characteristics - increased strength and high speed drying. The disadvantage is the high price.

When ready

Types of putty according to readiness:
Dry mixtures. Before use, the product is diluted with water. The proportions are indicated on the packaging. To mix a high-quality solution, you will need a drill with a mixer attachment or a construction mixer. To use the product, a certain skill in construction is required, so the composition is not recommended for use by beginners.
Ready-made compositions. Use immediately after opening the package. The composition is easy to apply, so the product is recommended for use by non-professional craftsmen. The disadvantage is the high cost.

Choice of putty

How to putty concrete walls, floors or ceilings - current question non-professional finishers who do the repairs themselves. The choice of composition depends on where the work will take place - indoors or outdoors.

For interior work

If the repair is carried out indoors, then when choosing a putty you need to take into account the type of surface.

For walls

In the living room, hallway, bedroom and children's room, professionals advise using gypsum putty. This composition is suitable for dry rooms. The product is reasonably priced, easy to apply and safe for health.
It is recommended to use in the kitchen and bathroom cement composition.
Puttying of concrete walls in dry and damp rooms is carried out acrylic agent. If there are no major defects, then the composition is used without the starting product. Acrylic putty for concrete walls it is easy to apply and levels the surface.

For floor

Concrete putty for interior work, if used for flooring, must have increased strength, since the material is subjected to increased load every day. Professionals recommend using a cement composition. This material is used for roughing and finishing work.

For the ceiling

The criteria for choosing putty for the floor are identical to the rules for choosing material for the walls.
For the window sill
If a concrete ceiling needs restoration, it is recommended to use it to level the surface before painting. acrylic composition provided that there are no serious defects on the base. The material is applied immediately to the window sill after cleaning. In this case, no primer is used. If serious damage is found on the surface, then the craftsmen advise using façade putty. Before applying the product to the surface, it is recommended to fix the reinforcing mesh. After this, puttying and subsequent finishing are performed.

For outdoor use

A suitable putty for external concrete work is a cement product for facades. The composition is durable, moisture-resistant and resistant to temperature changes. Professionals advise using this material for initial finishing. For finishing it is better to use acrylic composition. This product is even used for decorative coating.

Price

The price of putty depends on the type and manufacturer. The cheapest product is a dry mixture based on domestically produced cement or gypsum. The most expensive product– a finished product from a foreign manufacturer. For example, the bag is dry cement mixture, weighing 20 kg from Starateli, costs about 280 rubles. Ready-made Sheetrock acrylic composition can be purchased for 450 rubles per 5 kg.

Consumption of funds

The consumption of putty depends on the type of product and the thickness of the finishing layer. The exact numbers are indicated on the product packaging. On average, consumption is 0.7-1.5 kg per 1 m2 with a layer thickness of 1 mm.

How to make your own putty for concrete?

If we talk about how to make concrete putty yourself, there are many recipes. For concrete, it is recommended to use a gypsum-chalk composition. The product is recommended for use in dry rooms.
To prepare the product you will need:
chalk powder – 2-3 kg;
gypsum – 1 kg;
5% solution of wood glue - the amount is determined by eye.
Recipe for preparing the material:
place glue in the container;
put plaster and chalk in a separate container and stir these products;
Pour the powder mixture into the container with glue and stir thoroughly.
To mix the solution, use a construction mixer or a drill with a mixer attachment. Application time finished product– 20-25 minutes. After this, the composition dries.

Technology of use

Preparing the base

Surface preparation is a mandatory stage of work before finishing. Clean the base from the old coating. After dismantling, degrease the surface. For concrete, professionals advise using acetone, gasoline or white spirit. Apply the product to oil stains twice. Then sweep the base with a brush and rinse with water. After the concrete has dried, proceed to the next stage of surface preparation.

Padding

If the work is done without reinforcement, then a primer is used to improve the adhesion of the base to the material. The composition is applied with a brush, roller or spray gun (as in the photo below) in two layers with a break for drying.

Reinforcement

If walls are being puttied, it is recommended to use reinforcement instead of priming. Fiberglass mesh is used for this. Press the material against the wall and apply PVA glue on top. After the composition has dried, proceed to putty.

Applying putty

Instructions for applying the material:
seal the cracks with the compound;
Apply starting putty to the base using a wide spatula;
wait until the product dries (check the drying time on the packaging) and sand the surface with R 80 sandpaper;
mark the base and treat it with primer;
Apply finishing putty, and when the composition has hardened, sand the material with P 120 sandpaper;
put primer on the base in two layers with a break for drying;
do the finishing.
The video in this article shows how to properly putty concrete.

If you carefully study the rules for choosing a putty for concrete and the technology for applying the composition, then even an unprofessional finisher can handle the repair.