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Mesh for facades (density 160 g/m3);

The second method is plastering directly on sheets outer skin Houses. Unfortunately, if you are not a fan of the fakferkh style (when simulating fakferkh, the seams are covered with flashings), then this method of finishing can be considered solely as temporary. As practice shows, over the course of 5-7 years, even if everything is done efficiently and correctly, cracks will appear at the joints of the outer cladding sheets, which will ruin appearance facades. But plastering on OSB sheets for external cladding is an excellent way to take a “break” and save up money for finishing facing bricks, fiber cement siding, thermal panels with clinker finishing or other high-cost materials.

So, how to apply the plaster mixture directly onto the OSB sheets of the external cladding of the house? Already on initial stage we must try to reduce the joints of the sheets to a minimum - one of the ways for external cladding is OSB sheets, format 1250 x 2800. It is also advisable to cut window and door openings in whole OSB sheets, rather than using leftover material around them.

Step 1. We go through all the joints of the OSB sheets with frost-resistant sealant, put self-adhesive “serpyanka” on top, and putty.

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

Step 3. We apply a thin first layer to the pre-primed sheets of the outer skin, spread a fiberglass mesh on top, recess it a little into the first layer (in addition, the mesh can be “shot” with a construction stapler). Then we apply a 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.

Facade elastic plaster on osb

Elastic plaster is an environmentally friendly product, does not contain toxic solvents, is a composition with an elastic acrylic polymer, similar in appearance to ordinary plaster mortar. has high adhesion to almost all substrates (plaster, cement, concrete, asbestos, wood, chipboard, brick, OSB board) and has high performance characteristics.

The plaster has the following properties:

• forms an elastic coating without cracks characteristic of conventional plaster mortar;
• can be applied to almost any type of surface;
• provides 105% elongation (elasticity);
• the coating has a high coefficient of vapor permeability and ensures proper air and moisture exchange for the building;
• the material is easy to use: when applied to vertical surfaces does not drip from the spatula, is easy to apply and spread over the surface.

Purpose: intended for decorative finishing premises on concrete, brick, plastered or painted surfaces. Forms a durable, breathable, moisture-resistant, structural coating that can mask minor surface defects and at the same time create a decorative effect. Available white. Tinting is carried out in any color according to the RAL and NCS catalogs upon request.

Specifications:

Facade plaster using OSB

Thank you. What did you use to prime it? Is the mesh only on the seams or over the entire surface? How much did it cost per square meter?
Mesh over the seams, then primer, then plaster, mesh over the entire surface and plaster again.
By price and materials:
Self-adhesive mesh for joints 2X100rub=200
Test façade 2x400=800
Corner plaster profile with mesh - 2.5 m - 15x110 = 1650 rub.
Plaster mesh 4Х1100=4400 rub. (The mesh density must be at least 160 g/m2, if memory serves)
Primer Tifengrund 10l-2x705=1410 rub.
Plaster-adhesive mixture Knauf Sevener 30x420=12600 rub.
Total: 21060 rub.
I find it difficult to answer about the area of ​​the façade, I don’t have a project at hand, the house is 10x10, the height of the 1st floor + underground = 4 m, plus attic floor with an attic, 5 m high, plus a tower, well, 200-250 meters. Then the meter amounted to 85-105 rubles, although I could be wrong with the area of ​​the facade.

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

To protect relatively inexpensive material from atmospheric phenomena For OSB it is recommended to apply plaster. However, in practice this is not so simple, since it is necessary to ensure sufficient adhesion, reduced moisture absorption and the absence of cracks. Nose the right advice possible good plaster both in external and internal parts building.

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

Apply plaster directly to the slab, the plaster becomes dry and falls off over time, changes in indoor air humidity also lead to cracks as the slabs react to this. One way to eliminate this negative property is to use it indoors plasterboard boards. They protect the OSB surface and create an additional layer that can be easily plastered. In this case, fiberglass tape is used for joints, the seams of plasterboard slabs are sealed with soil, and after drying the surface is ready for plastering. We recommend reading on our website how to install OSB - several methods are described.

If you installed OSB panels outside, then they can be lined with sheets of foam plastic, then applied with reinforcing fabric, and finally plastered. On outdoors there is a risk of moisture getting in, even with good plaster - heavy rain, snow, temperature fluctuations pose a risk to OSB sheets.

Direct plaster on OSB panels
Although it is better to preserve the OSB board from the outside not to plaster it, but to 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 areas. This is the only way to ensure protection of OSB sheets from moisture. Allow the surface to dry and apply reinforcing fabric. This should protect the plaster from cracking.

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

Tip: When working outdoors, you must ensure that the panels have sufficient time to dry. Therefore, pay attention to the weather forecast and choose the driest day possible when carrying out work.

Preparing OSB boards 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. To correct this, mechanical adhesion mediators are needed. An alternative is to use adhesive paint. For example, galvanized iron mesh is suitable. It must have sufficient strength and be well secured.

Preparing the base

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

Tip: Press well on the mesh so that it does not slip and is well secured. Allow the prepared base to dry thoroughly before continuing work.

Now the surface needs to be primed - a primer for concrete mortars. If you want to plaster with clay building material, then special primers are offered in the trade, 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 apply two layers, allowing each layer to dry thoroughly. If you are using clay plasters, can be applied with paint brushes. Plastering on OSB is not a complicated process, so everything is done quite easily.

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

It contains the following components:

• Sand
• Cement
• Slaked lime

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

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

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

As a rule, a plastic bucket is sufficient for mixing the solution. 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 needed for Plastering:

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

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

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

3. After this, you should pay attention to empty seats, depression. Add the solution there and go over it again with a lath 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. To check uniformity, use a water jet building level. If you find small irregularities, you will have to refine them until the surface is perfectly smooth.

6. Then use a wide spatula and move it along the wall. It will remove excess mortar, and even small irregularities will disappear on the wall.

7. Allow the solution to dry before continuing.

8. After the solution has dried, you can correct minor unevenness - the task will be much simpler.

9. After completing the work, the plaster should dry for several days.

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

Features of plastering OSB boards

The edges and seam areas are important point when plastering OSB boards. There are special seam tapes available for sale that can be used for edges. Self-adhesive versions are especially easy to handle. To prevent cracks from forming at the joints, versions with artificial fibers can also be used as plaster. Additives provide the most flexible shape and the material is easily stretched. This reduces pressure and the risk of cracks.

Today, OSB boards are widely used in construction and interior decoration. The OSB board itself is a panel with dimensions of 2.5 × 1.2 m, which is made from compressed wood chips and has good performance, such as strength, ease of processing, resistance to mechanical damage.

OSB also has high sound and heat insulation. However, when the time comes finishing premises, many novice builders are wondering: How to properly putty OSB. After all, each OSB board is coated with wax, which preserves the quality characteristics of the material, and putty simply will not work on such a coating. How can one be, the material is so praised, but as a result, some ridiculous problems appear in the simplest finishing.

In this article, we will look in detail at how to properly putty OSB boards with your own hands, using quite simple diagram. Moreover, it doesn’t matter at all what needs to be puttied, the wall or the ceiling.
So, below is a wall covered with OSB, on the left before finishing, on the right - puttied, which is ready for painting or wallpapering.

Some builders, before starting to putty OSB, prefer to first sand the entire surface, thereby removing the wax layer and making the surface rough. True, this method will take a lot of time, and there will be a lot of dust, especially if you use a power tool. Others choose a simpler and no less reliable way– treating the OSB surface with a special primer and using mesh during the puttying process. Moreover, both methods incur approximately the same costs for tools and materials, but differ greatly in the time spent on work.

Selecting the necessary material and tools

In order for the putty to adhere well to smooth OSB, its surface must be prepared. To do this, we purchase at any hardware store a primer called “Concrete Contact” and a small brush, or a roller. After applying the primer, a rough layer forms on the smooth OSB surface. This surface, as a result, allows the putty to adhere well to the base.

Now you can proceed to the next stage of preparing the OSB surface. In order for the putty to stay on the wall not only firmly, but also for a long time, it is advisable to reinforce it. Therefore, when buying soil, be sure to take a plaster mesh with you. Almost all plaster meshes, as a rule, are made of either metal or polymer materials and have different sizes cells. Of course, to reinforce a thick layer of putty or plaster, it is advisable to use metal mesh, but, for finishing interior walls rooms made of OSB, it is enough to use fiberglass (or glass-fabric) mesh with a cell size of 5x5 mm. The main advantages of using such a grid:

- relatively low cost;
- simple material to use;
— improves the strength of the coating;
— prevents the appearance of cracks during shrinkage of the putty.

How to putty OSB

- creates a fairly durable and elastic coating;
— does not crumble or crack when drying;
— the finished surface can practically not be sanded;
- quick-drying material.


However, such putty is much more expensive than regular putty, but you can live with this, since the cost of purchasing it is easily offset by the quality and speed of work. To apply the putty, you will need two metal spatulas, one wide 20-30 cm, the second narrower 10-15 cm. We will apply the first spatula layer by layer, and the second we will work in the corners and hard to reach places, and also scoop the putty from the bucket.

Preparing the surface
If desired, for greater confidence, you can lightly sand the OSB panels with coarse sandpaper on critical areas of the walls, for example in corners or at doors and window openings. The primer is applied to the wall with a regular brush or roller in 2-3 layers with an interval of 20-30 minutes. After applying the last layer, it is necessary to allow the primer to completely absorb and dry, for which 3-4 hours is enough. Then we take the plaster mesh and cut it into strips with a length equal to the height of the ceiling. The mesh is applied in one layer over the entire wall area. It is recommended to place each adjacent grid with a slight overlap of 2-10 cm - as wallpaper was glued before. Attach the mesh to the wall with a stapler, screws or glue. It is not at all necessary to glue it over the entire area, just “smear” it with putty and it will easily stick to the rough surface of the OSB. It is better to start laying the mesh from the corner of the room.




Having glued the plaster mesh to the wall behind it top part, we begin to putty. We work only within the mesh strip, leaving small margins from the edges to overlap the edge of the next mesh. The first layer of putty should only attach and smooth out the mesh, so you shouldn't sculpt a lot at once. Consistency and accuracy are important here. We carry out putty according to standard rules puttying. We scoop up the putty with a small spatula and put it on a large one, with which we spread it on the wall. The direction of applying the putty itself does not matter, the main thing is that the surface is as smooth as possible. To avoid sagging and unevenness, try to hold the spatula correctly while working. Start spreading the putty on the wall, holding the spatula at an angle of 45-60 degrees to the surface, and finish the putty by gradually reducing the angle to 15-30 degrees.




It will be easier to putty an OSB wall with a mesh if you gradually move from the ceiling to the floor. This way we will gradually smooth out and evenly cover the entire plaster mesh. In total, the putty is applied to OSB panel in 2-3 layers 1-2 mm thick. After applying each layer, you need to let the coating dry for 30-60 minutes. The first layer can be made 1 mm thick - just to attach and smooth the mesh. The second layer should cover the plaster mesh. With the last layer we level the almost finished surface.



Finishing the putty
We finish the puttying, leveling out all the unevenness, using only a large spatula. The plaster mesh may be slightly translucent, but in no case should it protrude or be flush. If, after the putty has dried, the mesh still appears, you need to add another layer of putty. Ideally plaster mesh should be 2-3 mm from the surface of the finishing layer of putty. Trying to apply the putty carefully and evenly, layer by layer. If you don't rush, you may end up not having to sand the finished surface.



We count the consumption of materials
Before you buy primer, putty, brushes and a whole set of spatulas in the store, you need to decide how much and what to buy. After all, although the remaining extra can of putty will be useful on the farm, you will still spend a certain amount of money on it, which could be used to buy the missing can of soil. Therefore, it is better to calculate, at least approximately, how many materials will be needed. Here is the approximate consumption building materials for puttying OSB panels.

Oriented strand board (OSB), also known as OSB (OSB or OSBI), is perfect for construction. These slabs are increasingly used in house construction. This is especially true for the construction frame houses. They are used both for cladding exterior facades and for arranging interior spaces inside. Therefore, the question is which method to prefer for finishing interior spaces, is relevant for every home owner.

Main types of interior decoration

As finishing of interior spaces, the walls of which are made of OSB, you can use different ways. The choice is always up to the owners. Brief list finishing works which are suitable for OSB are given below:

• wallpapering
• painting
• varnish coating
• decorative putty and decorative plaster
• gluing tiles or ceramic tiles

All listed types of finishes have one common feature. The OSB surface must be properly prepared before the final finishing coat is applied.

There is essentially only one weak point of oriented strand boards. This 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 insulated from exposure high humidity. And here many people have a question: is it better to putty OSB walls or cover them with a layer of plaster?

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

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

What plaster is used for OSB indoors

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. We are talking about polymer-based plaster mixtures. A layer of such plaster “breathes” and prevents the formation of fungi and mold. The plaster layer helps to significantly reduce sound transmission and retain heat. It is environmentally friendly and absolutely safe. A wall covered with plaster looks absolutely uniform. Joints between slabs and other defects are hidden. This coating will last more than twenty-five years.

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

Decorative OSB plaster indoors. Types, characteristics.

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

Venetian plaster when applied, it can form smooth surface. It contains an admixture of the smallest marble chips. This gives the surface a mirror shine.

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

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

The most difficult thing to work with seems to be flock mixture. But it is very advantageous in design. The fact is that it consists of three layers - the main one, a layer with flocks and varnish coating. Pieces of dried acrylic paint are used as flocks.

Types of decorative plaster for OSB indoors by composition

Based on 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 in the role binder cement appears. It is not very suitable for OSB, since it is afraid of impact when hardening. Although the finished layer only becomes stronger over time, it lacks a certain plasticity. An accidental impact may cause a piece of the coating to come off the wall.

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

Synthetic resins serve as a binding component 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 color varieties. This kind textured plaster fits perfectly into the solution of the task.

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

Relief of textured plaster for OSB in the house

According to the shape of the surface relief, the most known species textured plaster are: “lamb”, “bark beetle” and “fur coat”.

"Lamb" It has a fine-grained structure due to the filler of small unprocessed pebbles.

Plastered surface "Lamb".

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

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

OSB surface preparation

As already mentioned, the finishing of walls and ceilings from OSB sheets indoors takes place in two stages. The first, roughing, includes preparing the facade of the slabs for finishing coat. The second, finishing, involves applying plaster to the prepared base.

Surface preparation begins with sealing the seams 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 go over the walls with ordinary sandpaper.

The walls should be cleaned of dust using a vacuum cleaner. For ceilings, all processes are similar. If necessary, wipe the surface with white spirit. After this, the first layer of primer is applied. Best used acrylic primer with additives, which improve its properties . Adhesive grade primers have also proven themselves well. They contain fine quartz chips, which help keep the putty on the walls. After the first layer of soil has completely hardened, the operation should be repeated.

Next up is plastering the walls. There are specially developed mixtures for OSB panels. It is better to use adhesive-based putties. Before applying the composition, a special metal or plastic mesh, which promotes better adhesion of the putty. Easiest to mount construction stapler. Then the first layer of putty is applied. The mesh should be completely hidden under the mixture. Perfect for creating flat surface You can putty the wall a second time when the first layer has dried.

The next two videos show the preparation process clearly.

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

After this you can think about applying decorative covering, be it wallpaper, paint or decorative plaster.

Applying decorative plaster indoors

The selected mixture is prepared as written on the package. The work is not much different from puttying. However, getting the wall surface to look as intended requires some skill.

To apply the mixture, use a flat spatula, as shown in the figure. The plaster is carefully applied in several layers. The layer thickness is small, ranging from one and a half to five millimeters. Typically, 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.

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

When building a house, you often have to think about saving money or mothballing construction for a certain period. One of these ways to save money or take a break to accumulate funds can be plastering the facades of a frame house.

Plaster finishing of facades wooden houses It became widespread in our country after the fire of 1812, and was often used until the beginning of the 20th century. Then this method of finishing facades was practically forgotten. But in the USA it was used until the 70s of the last century, until construction market plastic siding did not appear.

Today there are two ways to apply plaster mixture to the facade of a house. The first, most common, is external walls the houses are covered with sheets of polystyrene foam and a plaster mixture is 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 frost-resistant sealant, apply self-adhesive “serpyanka” over the seams, and putty.

Step 2. We prime 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, for this you can use the Knauf-Tiefengrunt primer or similar.

Step 3. We apply a thin first layer to the pre-primed sheets of the outer skin, spread a fiberglass mesh on top, recess it a little into the first layer (in addition, the mesh can be “shot” with a construction stapler). Then we apply a 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.