Finishing facade putty for painting. How to properly putty the facade of a house before painting? Putties from Prospectors

Preliminary wall finishing and why it is needed

The average cost of a bag of dry putty is $14-15 (acrylic putty is slightly more expensive), and a small bag of cement costs less than $5, so it’s clear why it is necessary to pre-finish building facades. It is worth saying that cement-sand plaster has excellent adhesion to “wet” finishing building materials. This quality allows the plaster to be used with almost any type of building decoration.

Detailed video tutorial on the technology of installing a “wet” facade

Let's consider the entire set of “wet facade” complete with insulation. In this case, the walls are treated with a deeply penetrating primer so that the adhesive for the insulation has excellent adhesion to the coating. Then the foam insulation sticker is applied.

At the next stage, it is necessary to putty with starting putty, then glue the foam with glue like Ceresit CM-11 ( essentially this is facade plaster ). Reinforcement is also performed plaster mesh made of fiberglass. Thus, the wall covering is leveled, and the consumption of putty for the facade is minimized. This will significantly save money on finishing the house.

At the finishing " wet facade“There are some features and rules that allow you to minimize the consumption of expensive building materials. Using this cladding method, it is possible to perfectly decorate a building, create comfort inside it, and achieve good thermal insulation. Today, many people use this type of building decoration because it is very effective, economical and practical.

Finishing putties

Before applying the finishing putty to the walls, you need to know the features of this building material. When choosing, you need to take into account what the rough surface is like. better type putty, paste, dry powder, which can be either oil-based or adhesive, latex, acrylic or a combination.

Types of putties

Plasters differ in composition and texture

Today putties are mainly produced from silicone, silicate, acrylic, and they can also be combined. We can confidently say that the best putties and adhesives are from Ceresit. To perform puttying, use a metal or stainless steel spatula of the required width. It is also called a “facade spatula”, although it is also used for interior construction work. If necessary, the dried solution can be processed sandpaper or diamond mesh.

For putties used for exterior finishing, the main condition is high quality binding materials - acrylic, silicone and mineral substances, which are responsible for the hardness, impact resistance and moisture resistance of the putty.

It is worth saying that when working with these building materials there are absolutely no toxic odors, they are absolutely harmless to health.

Not any finishing putty, even the highest quality, can be used for exterior finishing. For example, the Vetonit powder mixture is excellent for finishing indoors, but it cannot be used for exterior finishing and even for finishing rooms with high humidity (for example, baths).

Application Features

Let's look at how to apply acrylic facade putty and dry mixture to already prepared walls.

When using dry putty for finishing, you need to take 1/3 of a bucket of water and pour the powder into it, then mix the mixture thoroughly using a mixer or low-speed drill until the structure of the mixture reaches a consistency resembling mashed potatoes. Then you need to wait until the mixture sits for 5 minutes and beat it again. Only after this the solution can be applied to the wall.

Finishing

When finishing the facade, the putty solution is applied to the wall with the usual wide spatula, but at the same time the mixture is pulled out of the bucket with a narrow spatula 7-15 cm, after which it is applied to the entire blade of a wide spatula. It all depends on the skills and skill of the worker. Someone treats the coating with one spatula so that after that there is no need to sand it. Some people use it in their work to speed up the application process. building code, and then finishes the plane with a spatula.

Finishing the façade with putty

The most important thing when finishing is not to stop the process of applying any plane, that is, any area on the wall should not have joints with the undried area that was applied earlier, so that after completion of the work there are no seams on the surface. Transitions to any protrusions on the wall, as well as the finishing of another wall, have nothing to do with this.

Facade putty for external construction work, as a material, in addition to the leveling function, protects external walls structures from the negative effects of weather conditions - moisture, frost. It comes in several forms. Mixtures with a paste consistency are used immediately after purchase, as they are already ready for use. When buying dry powder, you will have to work hard and prepare the mixture yourself at home.

Exterior works

Ready material packed in buckets. Despite the ease of use of this putty, the transportation process is not as convenient as in the case of the dry version.

Facade putty and finished form of varying consistency. It depends on the manufacturer and purpose of the material.

The compositions are classified into:

1. Starter – the material is considered as a leveling or base material.
2. Finishing – a composition used at the last stage of external work. The material is fine-grained with a liquid consistency. Unlike starting option, this façade putty not so durable, but the end result is high quality. This is possible due to its advantageous properties - easy and thin application (0.4 mm layer), flexibility for processing (grinding).
3. Universal - the material includes the advantages of the two previous options, and is not used for external work on facades.
4. Decorative - the composition is used to form objects for decorative purposes or create elements of stucco decorations fixed to the building from the outside.
5. Facade putty for wood - used for the external walls of a wooden building to level the surface to a smooth state. In addition, the mixture is used as protection for wood that is vulnerable to weather conditions. It is suitable in cases where the cladding is made of wood.

There are products based on cement, which tolerates moisture and low temperatures, or polymer.

Group polymer materials includes acrylic/latex mixtures.

Advantages of acrylic-based material:

1. Convenient to use.
2. Easy to use.
3. Quick drying period, not accompanied by cracking or shrinkage.
4. No water is added to achieve the desired consistency.

Characteristics of stable mixtures for outdoor use

For external work, special mixture options are provided. They exhibit increased resistance to weather conditions and have appropriate technical characteristics.

Facade putty with waterproof properties is a striking example of a practical approach to the selection of building materials.

It has the following advantages:

1. A reliable level of protection from moisture - evaporation, condensation accumulation or heavy rain will not cause serious damage to the building.
2. Easy to apply, easy to spread over the surface.
3. Application does not take much time, which allows you not to delay the preparation of the walls.
4. It is also used indoors, which helps with renovations in bathhouses, bathrooms, and industrial premises.

The cost is low, and taking into account the advantages, this composition can be safely called convenient and practical. Recommended use on preparatory stage before painting.

The video review will tell you how to work with putty compounds when processing facades:

Another popular option among consumers is frost-resistant putty. It is characterized by easy application and takes well to the proximity of different types of plaster. Facade mixture with resistance to low temperatures is most often used to fill cracks and eliminate other facade defects.

The composition is considered universal. Work is not limited to specific weather conditions. Frost-resistant putty is both practical and reliable. The cost is more expensive than a waterproof mixture, but the benefits are much greater.

On the modern market there are materials with heat-resistant characteristics.

Purpose of façade putties

As mentioned above, facade putty is used not only for leveling the surface during construction. There are a couple more advantages that should not be kept silent about:

• she performs protective functions from the harmful effects of weather factors and any mechanical damage;
• acts as a soundproofing and heat-insulating material.

Composition and properties

The main properties of facade finishing putties are:

• high adhesive properties;
• plastic;
• moisture resistance;
• frost resistance;
• resistance to cracking and fading;
• resistance to any temperature changes;
• excellent compatibility with any paint and varnish materials.

The finishing composition contains several components that provide all of the listed properties, first of all, cement, gypsum and chalk, followed by mineral, marble and modifying additives and fillers. as well as plasticizers.

Cooking technology

If you purchased a dry mixture for finishing external surfaces, then you will have to dilute it. If you have never done this, then first of all study the instructions on the packaging; usually manufacturers indicate not only the guidance process but also the required proportions.

The standard guidance scheme looks like this:

• The dry mixture is poured into the prepared water and stirred gently. The amount of water and mixture is taken strictly in proportion.
• The solution is mixed in several ways: manually, which is quite labor-intensive and time-consuming, or using a drill, in which case the finished mixture will be more homogeneous.
• After mixing, stand for 5 minutes and mix again.

The calculation of the required amount is carried out experimentally; first, a small portion of the solution is applied and the area that you have treated is measured, according to which the required volume of the finishing mixture is calculated.

In contact with

Most residential and public buildings under construction are finished plaster mixture, which is called “wet”. Facade putty is a weather-resistant putty for exterior use. Used for final leveling of walls before application decorative covering. It is distinguished by its special strength, moisture resistance, and frost resistance. In this article we will tell you what façade putty should be, how to apply it correctly and choose it.

As mentioned above, facade putties must have certain qualities, namely high frost resistance. A high-quality putty should contain the following components:

• Gypsum or cement.
• Plasticizer.
• Modifying additives.
• Mineral fillers.

Very often, when finishing the facade, putty with a high content of glue, soap, gypsum and chalk is used. Depending on the type of work, we select different types of this material, the most popular are: combined putty, facade cement, latex mixture, facade acrylic and others. A universal option is considered to be a combined facade putty, which is excellent for leveling the surface; in addition, it allows you to cover even very large defects and defects. The combined putty, even after many years, will not crumble and will not flake even in the cold season.

The shelf life of façade putties is limited to six months. Don't stock up on it in advance!

The most popular types of facade putties

To choose the right putty, you need to learn more about its composition and properties.

Latex putty is not suitable for facades

It is one of the most popular in its segment, suitable for any surfaces in the interior, but not suitable for facades. This material is sold in 25 kilogram buckets. We will mention it only so that you know and do not get confused in choosing.

Adhesive putty

1. Possibility to mix with pigment compositions to change color. This will make it possible to do without painting the surface, and any mechanical damage on the walls they will not be so noticeable.
2. Putty consumption per one square meter. Consumption usually depends on the thickness of the laid layer and the filler. The smaller the thickness, the more economical the material is.
3. The putty must be compatible with any.
4. The time period for the mixture to harden.
5. Plasticity of the material.

How to choose winter façade putty

What are the main properties for winter facade putties - the ability to work at low temperatures and resistance to cracking when drying. For winter, you can use both acrylic and cement putties. But on the manufacturer’s packaging there must be a corresponding entry - “winter series”. Of course, such putties will be a little more expensive than usual, because they have added special construction chemicals that improve setting at low temperatures.

Which façade putty is waterproof?

Cement putty is waterproof. It is used not only for facades, but also for screeding floors and finishing bathtubs in the house. Therefore, it does not require additional polymers and hydrophobic substances, such as gypsum.

Gypsum putty is not suitable for facades at all and can only be used in interiors, and not in wet areas. Of course, marketers and technologists teamed up and found a way to use it in wet rooms, adding those same water repellents to it.

Does façade putty protect against fungus?

Those façade putties that contain antistatic and antiseptic agents protect. It is better, of course, to treat the effect rather than the cause. And prevent the formation of fungus on the facade. Mold on the facade is always the result of dampness, which for some reason appears and for some reason does not dry out. It is better to think in this direction to exclude the causes of fungus.

Important! Remember that each subsequent layer in the wall structure must be more vapor permeable than the previous one. If this principle is violated, problems with fungus cannot be avoided by any antiseptics. They simply won't cope.

Which façade putty is suitable for painting?

Any. Both acrylic and cement, your choice.

Which façade putty is best for use on plaster?

Any facade putty is suitable for working on a plaster facade. It will be easier to apply acrylic, but it is more expensive than cement. Acrylic is more elastic. Cement is more economical. The choice is yours.

What to do next after plastering the facade walls

Paint, plaster, decorate with panels based on insulation, or use the latest technology hinged ventilated facade. Curtain facade– this is cladding with siding, plastic or metal panels, porcelain stoneware, wood or stone panels. In general, after puttingtying the facade, proceed to the design of the exterior.

How to properly putty a façade

Let’s make a reservation right away: there are two ways to putty a facade: manual and machine. The machine is used to work with large volumes to increase the speed of work. For a private home, of course, this is irrelevant. By the time you get used to the machine, the facade will already be finished, and the material will be used twice as much as with the manual method.

Therefore, it is advisable to apply the material on our own, using a spatula or grater. Regardless of the method of applying the material, first of all the base must be prepared: the surface is cleaned of dirt, dust and oil stains, then priming is performed, which is necessary to ensure adhesion of the materials.

The finished putty material is mixed before work. If there are significant defects on the surface, they must first be eliminated by filling the gaps and cracks with putty. After the “patches” are completely dry, a continuous layer of material can be applied. If necessary, apply several layers. To achieve an excellent result, it is recommended to sand the finished surface.

Advice. You should not putty the facade in high humidity or in hot weather, when the surface is very hot - this greatly reduces the quality of the finish. Because the putty takes some time to dry.

Consumption of façade putty per 1m2

1. Starting and finishing putty.
2. Universal putty.

Consumption per 1 m2 of starting and finishing putty

Starting putty is needed to seal cracks and level out small differences. It is impossible to accurately calculate its consumption, since it is necessary to start from the condition of the wall. But to grout a medium crack, you will need a layer of approximately 3-4 mm per square meter. It may not be necessary to cover the entire wall with starting putty, so it makes sense to estimate the area to be putty.

To cover one square meter with a 4 mm layer of starting putty, you will need four kilograms of dry mixture. Usually the dry mixture comes in 20 kg bags.

The consumption of finishing putty per square meter is less than the starting putty. Largely due to preliminary priming of the surface. You can focus on 1 mm.

To cover one square meter with a 1 mm layer of finishing putty, you will need 1.2 kg of dry mixture.

Consumption per 1 m2 of universal putty

The declared consumption of universal putty by manufacturers is lower than the combination of starting and finishing putty separately. Typically, it is 1.5 kg per square meter for a layer of 1 mm. Manufacturers always indicate consumption on the packaging.

How many mm thick layer you need will all depend on the condition of the surface to be coated. Let's focus on the middle layer of 2 mm.

To cover one square meter with a 2 mm layer of universal putty, you will need 3 kg of dry mixture.

It is justified to use universal putty on more or less smooth and crack-free surfaces.

Stages of work execution

It is recommended to finish the façade after the foundation has settled. Usually, this process has a duration of about a year. Processing walls requires some effort and effort; you must be fully prepared for the fact that you will have to do at least two layers of mortar to get the desired result.

It will be impossible to get by with just one layer; even a qualified specialist will not be able to cope with such a task. Best Temperature for outdoor work is from 9 to 20 °C, permissible humidity air should not exceed 80%.

The process of applying putty is as follows:

1. The surface is cleaned of excess dirt and old finishes.
2. A primer is placed on the cleaned surface; it must dry before further operation. It is better to prime the surface in two layers.
3. Next, depressions, dents, and cracks are removed. After which the material is allowed to dry.
4. The putty is applied evenly to the walls and then carefully leveled. It is better to use two metal spatulas as improvised means. different sizes and a construction float. It is important to note that facade material must be used in pure form, it must not be mixed with paint or other additives.
5. After the first layer of putty has dried, it must be primed in order to improve adhesion to other layers.
6. The starting putty is applied layer by layer until the surface of the facade is completely straightened. Each layer is applied only after the previous one has dried.
7. At the last stage, finishing putty is laid on top of the base material.

Expert Experience

According to many construction companies, the best option putty for building facades is one that contains cement. This material is quite easy to apply to the surface of the walls and has high strength after drying. If you are going to repair the facade, then you need to understand that each subsequent layer must be more vapor-tight than the previous one. Otherwise, fungus and mold cannot be avoided. So that you don’t have to worry too much about selecting each layer, choose all the elements from the same manufacturer. This guarantees you compliance with the principle of vapor permeability when finishing the facade. This way you can completely protect yourself from incompatibility of materials.

Happy finishing! Share your comments and experiences with façade putty.

Putty for external use is a building mixture that has a cement or polymer base and includes mineral additives, modifiers and other ingredients. The more common of them is cement facade putty. It has an affordable cost and does not require special knowledge and skills to carry out the work. The main advantages of such compositions are water and moisture impermeability, a longer period of hardening of the material and increased strength. You can buy dry facade building mixtures for the starting and finishing finishing of working surfaces in the required volume on the pages electronic catalog Bauff. Having placed an order for a wholesale batch of goods weighing from 1 ton convenient time, you automatically receive prompt delivery of products using the company’s transport! Delivery is carried out within Moscow and the region within 24 hours. Order façade putty and receive a personal discount on your purchase!

Types of mixtures for facades

Putty for carrying out facade finishing- popular construction material, divisible by different kinds according to the binder element and the stage of use of ready-made solutions. Based on the binding element, they are divided into cement and polymer. Each of the putties has its own strengths and special characteristics that make them an indispensable material for finishing work.

Cement putties for exterior finishing

Cement compositions are indispensable when carrying out work on the exterior finishing of buildings. The versatility of the material is associated with its basic properties:

1. Moisture resistance. Due to the resistance to high air humidity, putties with cement base used for work on building facades, as well as high-quality and durable finishing of swimming pools.
2. Frost resistance is an indicator that allows the use of facade mixtures for roughing and finishing the exterior of houses located in the northern regions of the country.
3. Resistant to sudden temperature changes and prolonged frosts. Thanks to the presence of special fillers, the putty can withstand more than 35 freezing/thawing cycles without compromising its quality.
4. Resistance to negative impacts environment And aggressive environments. Putties are not afraid of rain, snow, alkalis and aggressive chemical compounds.
5. Elasticity. Allows you to quickly and easily apply compositions prepared for finishing to walls, distributing them evenly over work surfaces.
6. Sufficiently fast setting helps to carry out work several times faster, and economical consumption of the solution reduces financial costs.

When using cement putties, it is necessary to take into account the fact that the solution shrinks during drying, so cracks may appear. It dries longer than gypsum and has a wide range of uses. With its help, they not only level the surface and seal deep cracks, holes and other defects, but also finish the walls and plinths of buildings.

Polymer facade putties

Putty for exterior finishing polymer based, like cement compositions - universal mortar, used at various stages of processing work surfaces. It is applied to the walls to thoroughly level their surface, as well as finishing building facades. Most often among all existing varieties Experts choose acrylic putty for such compositions. They compare favorably with cement in the number of positive characteristics. comparison table The characteristics of the solutions are presented below:

Acrylic putties are made from acrylate-siloxane mixtures and are successfully used for external and interior decoration. Such solutions are easily and quickly applied to the wall, do not spread and evenly cover the work surface. The thickness of the applied layer should not exceed 2 mm. Odorless mixtures are used to treat cement, concrete, gypsum surfaces, and are also applied over plaster mortar.

According to the stages of use, putty for external wall surfaces is divided into:

• starting ones. Putties, characterized by grinding of large fractions and used for high-quality, full leveling of wall surfaces in order to remove unevenness, pits, crevices, holes and other defects. Apply in a thick layer;
• finishing putties - construction and finishing compounds used for the final leveling of working surfaces before application decorative finishing. The mixture is applied in a thin layer and allows you to hide minor defects on the walls.

Decorative mortars are also popular among builders and hobbyists, used to create textured elements and decorate rooms. No less popular is putty for processing wooden structures. Such compositions effectively prevent the negative effects of the environment on their surface.

Stages of applying putties for facades

1. Clean the surface from all kinds of contaminants: dust, dirt, oil stains and residues initial finishing. Remove old plaster covering from cracked areas.
2. Apply to the cleaned wall surface soil mixture, having deep penetration and leave the created base to dry.
3. After complete drying, using starting putty, it is necessary to repair all existing defects (cracks, holes, depressions and irregularities). Allow the applied coating to harden.
4. Apply a working putty solution to the area to be treated and level it. For tools, use several spatulas (large and small) and a construction screwdriver. Use putty for facade treatment only in its pure form. Do not dilute it with paint, glue or other mixtures.
5. After the finishing putty has dried, it is primed in order to improve the adhesion of subsequent layers to it.
6. Layer-by-layer application of the starting putty is carried out until the working surfaces are completely leveled. The thickness of each layer can reach 4 mm. At the same time, new layers are applied only after the previous ones have completely dried. In this case, the average consumption of putty for leveling surfaces is 11-15 l/m2.
7. The last stage The implementation of the task is laying and leveling the mortar over fully hardened layers of material for high-quality rough finishing of the external part of the buildings. After complete drying, it is sanded. The approximate cost of putty solution for finishing is 4 liters per 1 m 2.

Important to remember! Never apply putty to hot surfaces. Protect your work from direct sunlight, rain and splashing water. To protect the created coating from moisture accumulation during drying, cover it with polyethylene film. If your home is located in an area with high humidity, give preference to an acrylic composition.

Facade putty is often used for exterior finishing of brick or stone masonry. This is due to the fact that it cannot be laid perfectly evenly. Putty intended for finishing the facade has not only a decorative function, it protects against exposure atmospheric precipitation and minor physical impact. What are the features of this finishing material can you highlight?

Facade putty used for exterior work is a finely dispersed material, but it may contain fractions of different sizes. All solutions differ in their consistency and functions. The following types of mixtures are distinguished:

• Basic.

• It is also called the starting one. This external putty is widely used for leveling surfaces.

• Finish. It is represented by a mixture with smaller fractions compared to the previous composition. The finished putty has a liquid structure. It is widely used for final leveling of the surface, which is necessary for further decorative finishing of the facade. Although it has low strength characteristics, it is excellently sandable and flexible for finishing. Universal.

• This putty combines the advantages of starting and

• finishing mixtures. But it is not used for façade putty. Decorative.. As a result, the surface becomes particularly smooth.

Facade putty for external use is moisture-resistant, elastic and frost-resistant. You can apply a layer of paint or decorative plaster. The treated surface can also be finished with mosaics, ceramic tiles or enamel.

Features of choice

Increased demands are placed on façade putties. Weather resistance is the main criterion that applies to them. When choosing a specific composition, it is necessary to take into account the filler of the material. The evenness of the treated coating depends on it. The smaller the putty fraction, the smoother the surface will be.

Cement compositions have a more granular and coarser fraction. The best properties have paste-like ready-made compositions.

High-quality mixtures have the following features:

• do not crack and set quickly;
• easy to use;
• retain their plasticity for a long time;
• can be combined with the paints and varnishes used.

Related article: The nuances of wallpapering paint

The cement facade mixture is characterized by increased resistance to low temperatures and exposure to moisture. It has high strength, so it does not crack during application. For its production it is used quartz sand, which is crushed to 0.5-0.6 mm. It may include marble dust, ground quartz sand or limestone flour with granules up to 0.2 mm in size.

Cement putty may include chemical additives to improve technical parameters. Concerning color range, beige, gray and yellowish shades are used. White cement-based putty is not currently available because it requires expensive bleaches.

Polymer putty for facades can be made on an acrylic or latex base. Latex compounds are not used for finishing facades. But this putty is suitable for finishing indoor walls. Acrylic facade mixture can be used both as the main and as a finishing finish for external walls. It does not need to be diluted with water, and the coating is 2 mm thick.

On the video: what types of putties are there.

Making the mixture

Modern manufacturers supply all putties in two forms - as a dry powder or ready mixture. The already prepared Knauf mixture is supplied in closed plastic buckets. Volma needs dilution and is supplied in paper bags of various sizes. In the second case, you will have to use water to prepare the composition. It is important to strictly follow the manufacturer's recommendations in order to obtain the optimal mixture thickness.

To mix the putty, use a drill with a special attachment. When the consistency becomes creamy, it should sit for several minutes.

Prepare a small portion, enough for quick application to a specific area of ​​the wall. Mixtures of most brands, like Knauf, retain their optimal properties for up to 3 hours. Then they harden, after which they cannot be used.

Related article: Tips for using finishing putty

If you cannot decide on the amount of putty mixture, start with a small portion. This way you can determine your productivity in terms of consumption and application area per hour per square meter of treated surface.

Application technique

Finishing work should begin after the shrinkage of the foundation is completed. On average, this process ends a year after the completion of construction work. For facade works a suitable putty must be used. This process will require some effort and a little experience.

To apply a high-quality layer of Knauf, you will need at least 2 layers. Even experienced master You won’t get by with just one layer of putty. Work must be carried out at temperatures from +5 to +20 degrees. The maximum air humidity is no more than 80%.

To carry out the work, a ready-made or dry mixture intended for finishing the facade is suitable. When using putty, it is important to follow the sequence of actions:

1. First of all, it is important to clean the coating from oil stains, dirt, dust and old finishing layers. If there are places on the surface with cracked plaster, it will have to be removed.

2. You need to apply a primer deep penetration. It is important to note that it must be completely dry before next stage work.

4. After the first layer of concrete has dried, the surface is additionally primed. This improves adhesion to the next layer. On average, the mixture consumption is 11-15 liters per square meter. m. surface, and the layer thickness is about 4 mm.

5. Finishing putty allows you to repair individual defects - cracks, depressions and dents. It is applied in a thin layer and wait until it dries completely.

After completing the putty work, the stage of plastering the wall follows. Do not apply plaster to external works onto a heated surface. It is important that the coating obtained using putty is not exposed to direct Sun rays and raindrops.