How to putty OSB, is it possible to plaster - advice on the choice of materials and production of work. How and how to plaster, paint and putty osb slabs Plastering osb slabs

OSB slabs are widely used in frame housing construction. Those located on the street require protection from external influence atmosphere. Inside living quarters, the surface is finished in different ways: wallpaper is pasted, painted, varnished. When using some options, it is required to putty OSB in order to create a perfectly flat base, to protect the wood from the harmful effects of the used products, moisture.

Useful information about OSB boards - why putty them

Chipboards OSB are 90% wood. A special manufacturing technology gives the structure greater strength and a beautiful surface. Despite these qualities, the material needs additional finishing. Putty is not only the basis for subsequent decoration, but also protection against harmful effects environment. The peculiarity of the material, like any other natural wood, is its susceptibility to water and its vapors.

For this reason, many believe that the OSB board should not be putty, since the water contained in the mixture will cause the base to swell and deform. Wallpapering, painting is also dangerous. Everything is correct, if you do not take into account one thing: there is a sufficient amount of modern mixtures, adhesives, paints that do not contain water. They should be used.

Decorative putty hides the structure of the board

The natural appearance of the slabs in some cases may well suit, if it concerns utility rooms, outbuildings. Someone likes the peculiar pattern of the surface, the plate is varnished - and the whole finish. To make the OSB look like capital walls, you cannot do without preparation. It is the putty that will create a perfectly flat base for wallpaper, painting and decorative plaster. The wood will not swell from paint or glue.

What should be the primer?

There are no specially developed formulations for OSB. Conventional solutions are used, taking into account some requirements. Preparations containing water are immediately excluded. After application, it is absorbed into the material, which begins to swell. Only use a primer intended for wooden surfaces... These are formulations with acrylic, glyphthalic or plaster base... They take into account the moment that the putty will be applied, therefore, alkyd agents are not used - they are good for painting.

OSB primer - universal, deep penetration. Acrylic - the most suitable of them, is used for painting and puttying. For an unheated room, additives are added that prevent the development of the fungus. Some formulations, for example, EuroPrimer, already contain such additives. It is sold in concentrated form, before use it is diluted according to the instructions.

Slabs contain resins and other substances that sometimes show through the finish and spoil the work done. To eliminate such a nuisance, a rather sophisticated technology is used. First, an insulating paint is applied (example: Aqua-Deck E. L. F.), then a dispersion putty containing synthetic resin. Allow to dry for 12 hours and apply a special crack-bridging material: Variovlies A 50 Basic. After this preparation, no stains will appear.

In some cases, an adhesive primer is used - Betonkontakt. It differs from other compositions in the content of quartz sand, which makes the surface uneven, and with slight irregularities. It is used when as finishing decorative plaster is planned or tile... Thanks to the unusual filler, adhesion is significantly improved. When applying with a poppy seed brush or long-haired roller, other tools do not provide uniform distribution composition on the plate.

It is recommended to mix all the soils before use, but in the case of Concrete Contact this is a very important operation. Quartz sand settles quickly, if the process is not carried out very carefully, the mixture will turn out to be heterogeneous. Moreover, when working, this procedure is repeated every 10 minutes, only under such conditions the coating will be of high quality.

Among other primers, professionals recommend:

• varnish on acrylic base for wooden surfaces, which is diluted with a solvent in a ratio of 1:10;
• latex - after drying it forms thin film preventing the penetration of resins;
• alkyd varnish diluted to more liquid state white spirit.

except the right choice primer, it is important to apply it according to the technology:

1. 1. Plates are cleaned. Dried dirt is wiped off with a damp cloth, the rest is removed with a vacuum cleaner or a broom.
2. 2. Close up the joints. It is possible to use acrylic sealant or polyurethane foam... The surplus is removed with a knife, and the sealant is processed with sandpaper.
3. 3. The prepared composition is applied to the OSB. Usually they start with the joints, process them with great care, then move on to the rest of the surface.

The quality of the priming depends on the patience of the master. Do not immediately apply a thick layer, there will be no effect. It is recommended to repeat the operation three times, carefully distributing the preparation over the surface. Allow to dry well each time. How much time will pass depends on the air temperature and the properties of the composition and the thickness of the layer. You will have to be patient, do something else, but the quality will be excellent.

Putty requirements and choice

1. 1. Acrylic. Smooths any surface, including OSB.
2. 2. Nitro putty. Fast drying composition containing cellulose, resin, plasticizers, fillers. Before use, dilute with solvents recommended by the manufacturer.
3. 3. Oil and glue - in the composition of varnishes, glue, additives, oil and plasticizers Dissolve with linseed oil.
4. 4. Gypsum with polymers. They are considered the best for working with wood surfaces.
5. 5. Dispersion with synthetic resin. Highly elastic, used for finishing plaster.

The listed types of fillers must have certain properties. Before buying, it is recommended to read the instructions on the packaging and pay attention to the characteristics. Among these, of particular importance is very high degree adhesion, because not every compound will adhere to the resinous surface. When preparing for use, it is important to achieve a uniform consistency. Coating requirements include strength and sandability.

If it is necessary to putty on small areas, then the cost of the compositions is not particularly sensitive. When finishing the whole house built according to frame technology, it hits the budget. There is a recipe self-made composition that is used by some craftsmen. It consists of inexpensive components:

• oils: 2.8 kg of linseed and 0.6 kg of turpentine;
• 0.3 kg of ground pumice;
• 0.2 kg of gelatin and the same amount of casein;
• 170 ml of ammonia solution;
• 3 liters of water. Pumice is crushed into dust, the mass is poured into linseed oil and stir until smooth. Turpentine oil is poured in and mixed again. When the mixture is infused for 10 minutes, add the rest. Heat in a water bath, stir, insist, repeat again until uniformity is achieved.

Putty technology - process sequence

The work is not particularly difficult and repeats all the operations applied in relation to other surfaces. Theory alone is not enough to cope with the finish of a capricious material. For those who have little experience in puttying, it is useful to familiarize yourself with the video material that will tell you about the features of working with OSB.

The operations are carried out in the suggested sequence in order to avoid mistakes and not to miss something. They start by sanding the surface, joints and ends with fine-grained sandpaper. Dust is removed and must be primed. After treatment with formulations, it is created protective film, preventing the entry of resins and other substances into reaction with the finishing material.

Sealing joints at the beginning of work

After the last, third layer has dried, they begin to putty. The work is carried out at a temperature of + 1 ° and more and relatively dry air in which dampness is not felt. The composition is applied to a tray, applied with a spatula to the plates. Having processed small area, level the coating, remove the excess. This is done until the putty has set.

Tool used different widths... With a narrow spatula, the composition is distributed on a large scale. Holding it at an angle to the surface, the mixture is evenly smoothed. The next portion should overlap the previous one without too noticeable transitions. A layer of more than 2 mm is not allowed: this is not only an unnecessary waste of material, but also the threat of cracking. The putty is allowed to dry for 3-12 hours depending on humidity and temperature.

Then the surface is sanded, eliminating irregularities. If noticeable depressions remain, they are corrected by applying the composition, and the previous operations are repeated. When an acceptable result is achieved, paint or wallpaper. Sometimes non-woven reinforcement is required. Separate pieces are overlapped, then the joints are cut, the excess is removed.

Plastering OSB - how to do it right

This operation is mainly used outside to protect the slabs from mechanical damage, sun, rain and wind. The vapor-proof plaster allows the material to breathe, condensation does not accumulate, and there are no favorable conditions for the development of mold. Often, walls are insulated at the same time, which significantly reduces heating costs and increases sound insulation.

Different solutions are used:

• universal cement-sand, which is suitable for all surfaces;
• polymer compositions with high adhesion characteristics;
• gypsum for interior decoration;
• lime to plaster wet rooms.

All mixtures are diluted with water, therefore there is a threat of deformation of the wood boards and rejection of the finishing layer. To avoid such consequences, create an insulating floor using one of the options. In the first case, the insulation is fixed. The second method is the use of kraft paper or bitumen-impregnated cardboard.

OSB plastering is carried out on a reinforced mesh

For tile heat insulators, the surface is pre-cleaned and degreased with white spirit. Then an adhesive is applied and the insulation is fixed. Kraft paper or bituminous cardboard is stapled using a stapler. Plastering on the facade in both cases is carried out on a reinforcing mesh made of plastic or fiberglass.

The technology is standard, but there are some peculiarities. A spatula is used, and the application of the next layer is carried out after the previous one has hardened. The use of special mixtures will facilitate the process, because it is difficult to work with those prepared with your own hands, especially without sufficient experience.

Video material will help you to get acquainted with the features of OSB plastering in detail.

When building a house, you often have to think about saving money, or preserving construction for a certain period. Plastering the facades of a frame house can become one of these ways of saving or taking a break to accumulate funds.

Facade plastering wooden houses we have wide use received after the fire of 1812, and was often used until the beginning of the 20th century. Then this method of facade decoration was practically forgotten. But in the United States, it was used until the 70s of the last century, while construction market plastic siding did not appear.

Today there are two ways to apply the plaster mixture to the facade of the house. The first, the most common, is external walls houses are pasted over, with sheets of polystyrene and a plaster mixture is already applied to them. At the same time, the thermal insulation and energy-saving characteristics of the house are improved.

Step 1. We go through all the joints of the OSB sheets with a frost-resistant sealant, put a self-adhesive "serpyanka" over the seams, and putty.

Step 2. We ground all the walls. It is important that the primer allows the walls to "breathe", and does not isolate water vapor inside the house, for example, you can use the Knauf-Tiefengrunt primer or similar for this.

Step 3. Apply a thin first layer on pre-primed sheets external cladding, spread a fiberglass mesh on top, slightly recessed it into the first layer (in addition, the mesh can be "shot" with a construction stippler). Then we apply the second layer of plaster mixture.

Step 4. Painting the facades in the selected color. The paint used for facades should also not isolate water vapor in the wall.

The subject of numerous discussions of those who build houses or make repairs with their own hands, was the question of whether it is possible to plaster OSB boards s without spending additional materials and effort.

Plaster is a great way to improve and strengthen residential buildings erected using frame technology, to equip and insulate walls.

Expensive building materials can be successfully replaced with OSB wood boards. The practice of using them for external walls is widespread.

The popularity of the use of OSB boards

OSB slabs for exterior decoration facade and living quarters - a great alternative, affordable and affordable. Positive and negative sides every type of building and every building material has.

Lightness and thermal insulation properties boards made from layers of wood shavings - undeniable advantage, but, according to the builders, such walls require additional decorative finishing.

Detailed information on each type of waterproofing layer should be carefully studied. It is advisable to consult with specialists. Sometimes savings on building materials today translate into significant expenses in a short time.

OSB boards are used in construction both inside and outside the building. However, when applying plaster on wooden slabs some problems arise. Difficulties include cracking and moisture absorption. To prevent these negative manifestations, you need to prepare the wooden surface well. Find out how best to do this in our article.

For protection regarding inexpensive material from atmospheric agents for OSB it is recommended to apply plaster. In practice, however, this is not so easy as it is necessary to ensure sufficient adhesion, reduced moisture absorption and no cracking. Nose the right advice possible good plaster both in the external and internal parts of the building.

OSB panels are used with pleasure indoors for interior decoration. However, since they are made of wood, they absorb moisture well.

Apply the plaster directly to the board, the plaster becomes dry and falls off over time, changes in the air humidity in the room also lead to cracking, as the boards react to this. One of the ways to eliminate this negative property is indoor use. gypsum boards... They protect the surface of the osb and create an additional layer that can be easily plastered. For the joints, in this case, fiberglass tape is used, the seams of the gypsum plasterboards are sealed with soil, and after drying, the surface is ready for plastering. We recommend reading on our website how OSB installation is done - several methods are described.

If you installed OSB panels outside, then they can be faced with sheets of foam plastic, then reinforced with fabric, and plaster at the end. In the open air there is a risk of moisture ingress, even with good plaster - heavy rain, snow, temperature fluctuations pose a risk for OSB sheets.

Direct plaster on OSB panels
Although it is better not to plaster it from the outside to preserve the OSB slab, treat it with other means. But if such needs arise, it is possible to do this. To do this, treat the surface with a special acrylic primer. Make sure it completely covers the surface and there are no transparent or translucent spots. This is the only way to ensure the protection of OSB sheets from moisture. Let the surface dry and apply a reinforcing cloth. This should keep the plaster from cracking.

Next, you need to apply a thin layer of tile glue - it should be so thin that the mesh of the reinforcing fabric is visible. Excess tile adhesive is removed. Glue for tiles, here it performs two tasks - it serves, firstly, as adhesion, and secondly, it is an additional layer that retains moisture from the outside. After this procedure, allow sufficient time for the surface to dry completely.

Advice: When working outdoors, make sure that the panels are given sufficient time to dry. Therefore, pay attention to the weather forecast and choose the driest day when carrying out work.

Preparing the OSB board for plastering (both inside and outside the house)

Plaster cannot stick to smooth OSB sheets. Due to the fact that this material is supplied without protective treatment from moisture, it quickly swells and thereby becomes damaged. In order to fix this, mechanical adhesion mediators are needed. Alternatively, you can use adhesive paint. For example, galvanized iron mesh is suitable. It must have sufficient strength and be well anchored.

Preparation of the base

If you want to apply a thin layer of plaster (light plaster up to 1 cm thick), use an acrylic-based adhesive primer to prepare the substrate. It is effective against moisture. Then fix the reinforcing mesh on the base, walk with a thin layer of tile adhesive.

Tip: Press down well on the mesh so that it does not slip and anchors well. Allow the prepared substrate to dry thoroughly before proceeding.

Now the surface needs to be primed - for this, a primer is suitable for concrete mortars... If you want to plaster with clay building material, then in the trade special primers are offered, which are also suitable for OSB boards.

Plaster on OSB sheet

Now that the surface is prepared, you can easily plaster it. It is advisable to walk in two layers, while allowing each layer to dry well. If you are using clay plasters, can be applied with paint brushes. OSB plastering is not a complicated process, so everything is done quite easily.

You have a choice if you want to buy ready mix or make a solution yourself by mixing the necessary ingredients.

It contains the following components:

• Sand
• Cement
• Slaked lime

The properties and behavior of the mortar depend on the selected mixture. Thus, by changing the ratio between the individual components, you can change its properties. For example, high content lime deposits increases the strength and adhesion of the solution. Remember to mix equal parts of water, cement and sand to get a good result.

Fine sand is suitable for interior work, as the plaster layer becomes smoother. Alternatively, you can use a ready-made mixture. Pay attention to the information on the packaging, here you will learn about the scope of the selected product.

Advice: since in many mixtures the content of calcined Substance remains insignificant, a little lime can be mixed if necessary. This is necessary if you want a more durable plaster.

Typically, a plastic bucket is sufficient for mixing the mortar. Finishing mixtures are now mixed with water, resulting in plaster. To mix, place the mixture in a bucket and add and add water in the amount indicated on the package. For mixing, you can use a drill with an appropriate attachment. After mixing, the solution should be left for 10 minutes.

These tools and materials are required for Plastering:

• Flat trowel
• Plaster trowel
• Level
• Rail
• Putty knife
• Plastic containers
• Drill
• Drill attachment
• Ready mix, or, respectively, cement, hydrated lime and sand

1. First, using a spatula, spread the mortar evenly over the wall. The consistency of the material is important for the speed of work and other work processes. The mixture should not be too wet or too dry. Thanks to the optimal mixing ratio, you get enough time to ensure an even layer of plaster.

2. In addition, for plastering works a rake is required. It should be long enough and can be made of wood or metal. It serves to distribute the plaster evenly over the wall surface. Pull the batten from one side to the other to smooth the surface.

3. After that, you should pay attention to the empty spaces, depressions. Add the solution there and walk again with the rail - so that the surface becomes even.

4. These operations should be carried out until a smooth surface is obtained and the plaster is of sufficient thickness.

5. Use water to check for uniformity. building level... If you find slight irregularities, then you will have to modify them until the surface is perfectly flat.

6. Then, use a wide trowel and slide it over the wall. He will remove the excess of the mortar, and even small irregularities will disappear on the wall.

7. Let the solution dry before proceeding.

8. After the solution is dry, you can correct minor irregularities - the task will be much easier.

9. After completing the work, the plaster should dry within a few days.

10. If you plan to paint the plaster, you must first apply the plaster mix. And when finishing, do not use a float - the surface must remain smooth.

Features of plastering OSB boards

The edges and seam points are important point when plastering OSB boards. There are special seam tapes on the market that can be used for edges. Self-adhesive versions are especially easy to handle. To prevent cracks from forming in the joints, versions with artificial fibers can also be used as plaster. The additives provide the most flexible shape and the material is easy to stretch. This reduces pressure and the risk of cracking.

Oriented strand board (OSB), it is also OSB (OSB or OSBI) is perfect for construction. These slabs are increasingly used in housing construction. This is especially true for the construction of frame houses. They are used both for cladding facades from the outside, and for arranging the interior space inside. Therefore, the question of which method is preferred for finishing indoor spaces, is relevant for every home owner.

The main types of interior decoration

As a decoration for interiors, the walls of which are folded from OSB, you can use different ways... The choice is always up to the owners. Short list finishing works which are suitable for OSB is given below:

• wallpapering
• painting
• varnishing
• decorative putty and decorative plaster
• gluing tiles or ceramic tiles

All of these finishes have one a common feature... The OSB surface must be properly prepared before the topcoat is applied.

The weak point of oriented strand boards is essentially only one. It is the ability to absorb and gradually accumulate moisture. Over time, the entire slab or part of it swells and deforms. Therefore, the OSB surface must be isolated from the impact high humidity... And here many have a question whether it is better to putty the walls from OSB or cover them with a layer of plaster?

Initially, the plastering process is used to seal the joints between the slabs and to level the walls. This layer serves as the basis for applying paint, wallpapering partitions and, oddly enough, for the finishing layer of plaster. So the conclusion suggests itself quite definite: putty is an element of rough finishing of premises.

So it is quite possible to plaster the interior walls from OSB. This, along with others, is a fairly common finishing method that designers often use. It should be added that the use of the usual sand-cement mixture not recommended in this case. There are special types of plaster that are designed for internal works with OSB panels.

What plaster is used for indoor OSB

Plaster, in this case, is used to create the last layer, which largely determines the design of the premises. These mixtures are called decorative plaster. For wooden surfaces, it is recommended to use compounds that have high adhesion. It is O plaster mixes polymer-based. A layer of such plaster "breathes" and prevents the formation of fungi and mold. The plaster layer significantly reduces sound transmission and heat retention. It is environmentally friendly and absolutely safe. The wall covered with plaster looks absolutely uniform. Joints between slabs and other defects are hidden. Such a coating will last more than twenty-five years.

Plaster mixes are sold ready-made or dry. Dry varieties should be diluted with water or another reagent before application, according to the instructions. It is very important to make sure that the OSB boards are rigidly fixed and not subject to movement. Only then can you start working. Otherwise, the plaster may crack and flake off in places.

Decorative OSB plaster indoors. Types, characteristics.

Decorative plaster can be classified according to two parameters: by the composition of the filler and by the type of binding components. By the type of filler, one can distinguish Venetian, structural, textured and flock.

Venetian plaster when applied, it is capable of forming a smooth surface. It contains an admixture of the smallest marble chips. This gives the surface a mirror-like shine.

Structural blend has small admixtures of quartz and other components. The surface is rough. Its main difference is that when applied to a wall, multi-colored spots appear on it.

Textured plaster may have different kind and include impurities of any suitable material... These can be small stones, pieces of mica, fibers of silk or other fabric. Wall panels coated with this mixture have a pronounced texture, which is determined by the filler.

The hardest to work seems to be flock mix... But it is very winning in design. The fact is that it consists of three layers - the main layer, the layer with flocks and varnish coating... Pieces of dried acrylic paint are used as flocks.

Types of decorative plaster for indoor OSB by composition

According to the presence of different binding components in the mixture, textured plaster can be divided into the following types:

• mineral
• acrylic
• silicone
• silicate

IN mineral plaster cement acts as a binder. It is not very suitable for OSB, since it is afraid of shock when hardened. Although the finished layer only gets stronger over time, it lacks a certain amount of plasticity. If accidentally hitting the wall, a piece of the cover may come off.

Acrylic plaster made on the basis of acrylic resin. Compared to the previous mixture, it has a lower strength and durability. Has many color solutions... You can color the mixture yourself by adding a special colored paste. It is quite suitable for application to the surface prepared by OSB.

Synthetic resins serve as a binder for silicone decorative plaster ... It is very flexible and can be easily applied to the wall. Silicone plaster is resistant to moisture, vapor permeable and has an antiseptic effect. There are many colors available. This kind textured plaster fits perfectly into the solution of the task.

Silicate plaster it stands out in that it is used to create an astringent effect liquid glass... The hardened surface has increased strength, moisture resistance, vapor permeability and antifungal effect. Such plaster will last a long time, up to fifty years or more. This option can also be used to work with OSB.

Relief of textured plaster for OSB in the house

According to the shape of the surface relief, the most famous types of textured plaster are: "lamb", "bark beetle" and "fur coat".

"Lamb" has a fine-grained structure, due to the filler of small untreated stones.

Plastered surface "Lamb".

"Bark beetle" resembles a tree that has been attacked by bark beetles.

Plastered surface "Bark beetle"

"Fur coat" has a smoother surface compared to the first option, since the filler in this case is cement.

Plastered surface "Fur coat"

Surface preparation OSB

As already mentioned, the decoration of walls and ceilings from OSB sheets indoors it takes place in two stages. The first, rough, includes the preparation of the facade of the slabs for topcoat... The second, final, is to apply plaster to the prepared base.

Surface preparation begins with sealing the joints between the slabs. For this, it is advisable to use acrylic or silicone sealant ... After completing this operation, it is recommended to get rid of all visible irregularities and defects using grinder... If this is not possible, then you can walk along the walls with ordinary sandpaper.

Sealing joints with sealant.

The walls should be cleaned of dust with a vacuum cleaner. For ceilings, all processes are similar. If necessary, wipe the surface with white spirit. After that, the first coat of primer is applied. Best applied acrylic primer with additives that improve its properties ... Primers of the adhesive class have also proven themselves well. They contain fine quartz aggregates, which help to keep the putty on the walls. After the first layer of soil has completely solidified, the operation should be repeated.

The next step is to putty the walls. There are specially designed mixtures for OSB panels. It is better to use glue-based putty compounds. Before applying the composition, a special metal or plastic mesh which contributes to a better adhesion of the putty. Fastening is easiest to do with a construction stapler. Then the first layer of putty is applied. The mesh should be completely hidden under the mixture. To create a perfectly flat surface, you can putty the wall a second time when the first layer is dry.

The next two videos illustrate the preparation process.

More details about the intricacies of the choice of putty, preparation of the base and puttying can be found in a separate article:.

After that, you can come up with a decorative coating, be it wallpaper, paint or decorative plaster.

Indoor decorative plastering

The selected mixture is prepared in the same way as it is written on the package. Work is not much different from puttying. However, it takes some skill to get the wall surface to look as intended.

A flat trowel is used to apply the mixture, as shown in the figure. The plaster is carefully applied in several layers. The thickness of the layer is small, within one and a half to five millimeters. As a rule, two or three coats are sufficient. It is very important to ensure that before applying the next layer, the previous one has dried and gained strength.

Plastering the prepared surface

Such is circuit diagram works on plastering of internal surfaces from OSB. It should be noted that each type of decorative plaster has its own nuances when applied. This type of finish is relatively inexpensive. And if everything is done correctly, the resulting interior will satisfy the most demanding taste and will last for many years.

Example Venetian plaster with drawing.