Frame structures have proven themselves quite well in modern construction– today, buildings on a lightweight basis can be found almost everywhere. OSB sheets are most often used as external cladding for frame-type buildings, which are distinguished by their lightness, affordable price and high level thermal insulation.
For plating you can use various materials– abundance modern technologies makes it possible to bring almost any idea to life. However, with traditional finishing the situation is somewhat different - the combination with wood will not benefit everyone finishing materials. In this regard, lovers of monolithic finishing quite reasonably ask the question: is it possible to plaster an OSB board?
Initially it was applied exclusively to solid, immovably mounted structures - brick walls, concrete, blocks, etc. Plastering surfaces on a moving surface wooden base until recently, it was not practiced, since without preparatory work this action will lead to disastrous results.
This article will provide you with step-by-step instruction, through which you will learn how to plaster an OSB board with your own hands. In it you will find a description of the most important points, which will help you avoid serious mistakes in the process of forming plaster.
It is advisable to think about the choice of coating even at the stage of forming the skin, in order to be able to prepare the surface as much as possible for future work. IN in this case it is necessary to pay attention to the assembly of the supporting frame and/or sheathing, which will serve as the basis for installing OSB sheets.
Location frequency load-bearing elements must comply with construction regulations - reducing their number and increasing the distance between them is extremely undesirable.
The installation of the sheets themselves must also be carried out as reliably as possible in order to prevent strong mobility of the elements. The main enemy of a plastered surface is vibration and the moving structure of the base - when forming the cladding, it is necessary to smooth out these negative factors as much as possible.
Note! In this case, it means strengthening the structure within the limits of building codes and prescribed technologies. You cannot sacrifice expansion joints or other necessary elements for the sake of strength.
OSB is a wood-based product that is formed from shavings and chips. As such, wood is not used as a base for plaster because it absorbs water and then rejects the plaster mortar.
Without preliminary preparation, the plastered surface will almost immediately become covered with cracks. Before plastering the OSB board, it is necessary to create an insulating layer between the plaster and the sheathing.
There are two ways to prepare the surface - installing insulation or upholstery with kraft paper/bituminized cardboard. Let's look at both technologies in more detail.
The material for external insulation of OSB sheets is polystyrene foam boards, which have sufficient strength and are completely moisture-proof. The lightness of polystyrene foam insulation allows it to be installed on an adhesive basis, which in this case is the only available option.
In general terms, the installation process looks like this:
First of all, the joints between the sheets are coated with an elastic sealant, after which the surface is covered with kraft paper or bitumen cardboard, which is fixed with a stapler. Reinforcement in the form of fiberglass or plastic mesh, then
In the previous article "technology prefabricated houses"we talked about building a house from sip panels, an important component of which are OSB panels. These boards are distinguished by their dryness. Therefore, it is better to use oil compounds when working.
If you use water-based paints, this is a big risk.
It is better to varnish the OSB before applying a coat of paint.
But, if the paint is applied on one side using water-based paint, this can result in the material curling on one side.
Sharp corners
The corners should not be sharp under any circumstances, otherwise the paint will spread over them. To avoid this, the corners must be rounded using a grinder or sandpaper.
Edges
Water is absorbed especially strongly at the edges. Therefore, these areas must be isolated before applying paint.
Antiseptic and fire retardant
If you plan to impregnate OSB with an antiseptic or fire retardant, they may contain a large amount of alkali.
If there is a lot of alkali, the OSB must be coated with an appropriate primer.
A thick layer of paint may crack and fall off in pieces when drying. It is better to apply several thin layers than one thick one.
At the same time, make sure that when applying a new layer, the previous one is thoroughly dry.
So, the list of rules:
1. Edges must be sealed and rounded before painting begins.
2. If you use water-based substances to coat OSB, you will need to sand the swollen material afterwards. It is better to use solvent or oil based substances.
3. If the dye is transparent, you need to make sure that it does not allow direct sunlight to pass through.
4. When attaching slabs, you need to get rid of places where moisture may accumulate.
5. It is necessary to paint both sides at once so that one side does not curl.
Given the tendency to swell from moisture, OSB should be filled only with oil-based materials.
There are no special varnishes for OSB. But you can use varnishes for working with wood. This will save the drawing.
There is also a decorative component.
Again, we start from the fact that OSB absorbs moisture well. Therefore, OSB is first coated with a primer.
The primer dries, and a layer is obtained that does not allow moisture to pass through. But now we apply putty based on synthetic resin.
It also needs to dry. Drying time - 12 hours.
Elastic reinforcement material is glued on top. And only at the end the paint is applied. This method will 100% protect the wood from moisture carried by the glue.
OSB boards can often be found on load-bearing structures. In this case, the surface must be strengthened and insulated.
For this, bitumen cardboard, roofing felt or craft paper is used. These materials are optionally attached directly to the OSB board.
Then it is attached to the base plaster mesh made of zinc. It must be completely buried in the plaster.
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 properties, such as strength, ease of processing, and 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 a fairly simple scheme. 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 method - treating the OSB surface with a special primer and using a 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.
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 a 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. 
- 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 in critical areas of the walls, for example in corners or near door 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 - just 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 at its upper 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 the OSB panel in 2-3 layers with a thickness of 1-2 mm. 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, the 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.
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's about 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 the OSB boards are 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 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 a 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 be of various forms and may 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.
Based on the presence of different binding components in the mixture, textured plaster can be divided into the following types:
IN mineral plaster Cement acts as a binder. It is not very suitable for OSB, since it is afraid of impact when hardening. Although the finished layer 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.
According to the shape of the surface relief, the most famous types of 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.
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 “Shuba”
The most widely used is oil-adhesive putty. Available in prepared or concentrated form. Derivative mixtures:
Nitro putties are applied in a thin layer. Used to treat minor damage or for decorative purposes. They have a pungent odor. Work is carried out in well-ventilated areas. Solvents act as a base. Fillers: red lead, koalin, zinc white. Finishing of the surface is required: painting or wallpapering.
There is another way to apply plaster to the surface of an oriented strand board: thin sheets of polyurethane foam are glued to the surface and plastered with mixtures based on cement, lime or gypsum.
After purchasing all necessary materials you can immediately start working. It is worth noting that pox putty is carried out in the same way, regardless of whether the surface is painted or wallpapered. Puttying OSB should be done in the following sequence:
Puttying process
If we talk about whether it is possible to putty OSB boards, we must take into account that for these purposes it is preferable to choose specialized compounds that do not contain water.
putty osb walls makes them suitable for painting, as well as for gluing vinyl, non-woven or liquid wallpaper.
The article states full information about how to putty an OSB board, tips on choosing materials and application rules. This finishing is completely optional, but will help protect the base from moisture and allow you to create a beautiful, high-quality decorative coating.
Now you know how to putty OSB boards profitably and in a fairly short term. Compliance with the described recommendations will allow you to implement high-quality putty OSB boards, with a guarantee of a long service life and maintaining a beautiful appearance.
When working with OSB boards, first of all you need to remember that more than 90% of these products consist of wood. Therefore, high-quality finishing of OSB boards is associated with the use of materials typical for working with solid wooden surfaces. The slabs lend themselves to almost any finishing: they can be glued, painted, puttyed, varnished and even, subject to certain rules, plastered. All processing methods have their own characteristics, so each one should be analyzed separately.
It is very good if the slabs have not yet been installed. Then you can prime their ends, which absorb moisture abundantly. Once the installation has already been completed, this will no longer be possible. During the preparation process, the slabs need to be sanded. This is the only way to achieve a noticeable increase in grip. In any case, it is advisable to coat all seams with sealant.
Advice! Want to save your time? Then it’s worth purchasing OSB already sanded. The price difference is not that big, but for interior decoration living rooms they are more convenient. This must be taken into account when wallpapering is planned.
To protect the OSB from moisture, as well as better adhesion, the boards must be well primed before puttying.
Now you can proceed directly to applying the putty.
When all stages have been completed, you can begin decorative coating. You need to decide for yourself which method to give preference to; it could be wallpapering, painting or something else.
OSB boards are a material that has solved a large number of problems. Possessing many advantages, it appealed to both professional builders, and for simple home craftsmen. This material, with all its advantages, requires additional processing. To putty it, it is better to use specialized compounds. They should not include water. Strict adherence to all application rules will allow you to create flat surface, which will not cause concern. And then you can successfully stick wallpaper.
The advantages of OSB boards are an undeniable advantage of this material, and include:
Of course, even such a functional material is not without its drawbacks. There is only one problem - the difficulty in treating the surface of the slabs with paints. But in subsequent paragraphs of the article you will see that this problem can be solved simply and elegantly.
A material such as OSB can be painted with water-based or oil-based compositions applied with a brush, spray or roller.
The question often arises: is it possible to paint OSB boards with water-based compounds? It is possible, but this will increase the shape of the sheet slightly (swelling is possible), so it is highly advisable to use OSB 3. If you paint only on one side, this may lead to a slight bending of the panel. That's why water-based paints It is worth processing the slab when appearance not important. In opposite situations, it is necessary to use oil compounds. What are the features?
1. Any paint tends to spread on sharp corners. Therefore, before painting, they must be rounded by light sanding (with a radius of at least 3 mm)
This is especially important for OSB used for exterior finishing.
Before painting OSB, the perimeter is first painted
When treating slabs located outside, it is necessary to use paints intended for outdoor use. In this case, you should follow the manufacturer's recommendations for painting wooden surfaces.
2. Edges. Their surface is more porous than the plane of the slab. The result is greater absorption, i.e. moisture absorption
Therefore, special attention should be paid to sealing edges. Moreover, this operation must be carried out before priming and applying the main coating.
Painted OSB floor
3. Padding. If you decide to treat the slabs with an antiseptic or fire-retardant impregnation, then you should carefully read the instructions - some of these chemicals may contain increased content alkali, which will require the use of a special primer.
4. Layers of paint. The opinion that the thicker the layer, the better it will protect the surface, is not entirely true. It is better to apply several thin coats rather than one thick one. In this case, each layer must be thoroughly dried.
The abbreviated name OSB is actually the Russian sound of the English abbreviation OSB, which stands for oriented strand board. Translated into Russian, this expression means “oriented strand board” (OSB). This means that the most correct name for the material, characterizing its functional features, is OSB, but builders often call it OSB.
The boards are formed from many layers of wood chips, compressed using high pressure and high temperature. Between the layers there is an adhesive, which is made up of synthetic resins. These OSB components are supplemented boric acid and synthetic wax, also included in its composition.
Chips in product layers in different directions. For example, longitudinal laying is used in one layer, and transverse laying in the next. This order makes the slab more resistant to various mechanical influences.
At first glance, the slabs look aesthetically attractive, but such a surface is not practical. Therefore, it needs additional improvement with putty. The main thing is that the surface of the slab is leveled by puttying, which makes it possible to glue the prepared layer of wallpaper or cover it with paints and varnishes. The second positive result of puttying is the extension of the service life of the ceiling and walls.
Like any wood product (the content of wood chips in OSB is 80-90%), the board has the ability to absorb moisture. This property leads many to doubt the advisability of puttying OSB. Still, paint and wallpaper glue can subsequently cause swelling and deformation of the base. This problem can be solved by refusing to use water-based formulations. The absence of water will eliminate the threat of swelling of the canvas.
Important! The degree of moisture resistance of OSB depends on its brand. The most stable in this regard is OSP-3
This stove is intended for installation in rooms with high humidity.
Along with what was said earlier, it is worth noting that many people prefer the look of natural wood structure and wonder whether it is possible to leave the surface of particle boards unchanged. Yes, this is quite possible, but this design is more suitable for country house or utility room. In this case, it would be appropriate to varnish the panels.
There are no specially developed compositions for OSB. Conventional solutions are used, subject to certain requirements. Immediately exclude preparations containing water. After application, it is absorbed into the material, which begins to swell. Use only a primer intended for wooden surfaces. These are compositions with an acrylic, glyphthalic or gypsum base. They take into account the fact that putty will be applied, so alkyd products are not used - they are good for painting.
Primer for OSB boards – universal, deep penetration. Acrylic is the most suitable of them, used for painting and puttying. For an unheated room, additives are added to prevent the development of fungus. Some formulations, for example EuroPrimer, already contain such additives. Sold in concentrated form, diluted according to instructions before use.
The slabs contain resins and other substances that sometimes bleed through the finish and spoil the work done. To eliminate such a nuisance, quite complex 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 glue on a special material for fixing cracks in the putty: Variovlies A 50 Basic. After such preparation, no stains will appear.
In some cases, an adhesive primer is used - Concrete Contact. It differs from other compositions in the content of quartz sand, which makes the surface not smooth, but with slight irregularities. Used when finishing is planned decorative plaster or tile. Thanks to the unusual filler, adhesion is significantly improved. When applied with a poppy brush or long-haired roller, other tools do not ensure uniform distribution of the composition over the slab.
It is recommended to mix all 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 will the coating be of high quality.
Except the right choice primer, it is important to apply it according to the technology:
The quality of priming depends on the patience of the master. Do not immediately apply a thick layer, it will not have any effect. It is recommended to repeat the operation three times, carefully distributing the drug over the surface. Let it dry thoroughly each time. How long it takes depends on the air temperature and the properties of the composition and thickness of the layer. You'll have to be patient and do something else, but the quality will be excellent.
Before puttying, the surface is first sanded and then primed. To carry out the work, material is selected based on a number of requirements, namely:
Advice! It is preferable to buy already polished slabs, the price of which is not much higher, but the finishing work will be much faster.
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.
Finishing the facades of wooden houses with plaster 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, the most common, is that the external walls of the house are covered with sheets of foam plastic and a plaster mixture is applied to them. At the same time, the thermal insulation and energy-saving characteristics of the house are improved.
The second method is plastering directly on the sheets of external cladding of the house. 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, within 5-7 years, even if everything is done efficiently and correctly, cracks will appear at the joints of the external cladding sheets, which will spoil the appearance of the 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 materials that have a high cost.
So how to apply plaster mixture directly on the OSB sheets of the external cladding of the house? Already on initial stage you should try to reduce the joints of the sheets to a minimum - one way is to use OSB sheets, format 1250 x 2800, for external cladding. 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, 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 chosen color. The paint used for facades should also not isolate water vapor in the wall.
Plaster on OSB sheets, to be or not to be? 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.
Source:
The most in a fast way Applying plaster to the surface of OSB boards will use polymer compounds based on acrylic or latex synthetic resin. They are available in the form ready-made solutions. After opening the container, everything must be used very quickly. Because the plaster sets quickly and it is impossible to dilute or restore the original consistency.
Now let’s figure out how to plaster an OSB board in this way.
The polymer layer of plaster does not require painting, but if desired, the owner can change the color of the finish at any time. This method of decorating OSB boards is expensive, but its service life of over 25 years makes it possible to eliminate this disadvantage.
The compositions that are used for plastering slabs harden very quickly, so if the owner does not have experience in this area, then it is better to use the work of a professional team.
The type of paint is selected based on the operating conditions of the material: indoors or outdoors, degree of load (floor, walls), exposure to moisture, sun, sub-zero temperatures. The following paints are used for painting unplastered and unputtyed surfaces:
How to paint OSB. Photo
Advice. To reduce material costs, use factory-polished boards. Their cost is slightly higher than unpolished products, but finishing work will require less consumables, time and effort.
Since wood tends to absorb moisture and swell, the question arises whether it is possible to paint OSB boards with water-based paints. If the slab has already been treated with varnish, drying oil or primer, then it can be painted with water-based acrylic, silicone or silicate paint. If the slab does not have a waterproof coating, you should apply it yourself, and paint the OSB only after the primer has dried. This type of paint is used for interior work and has the main advantage - they do not emit harmful fumes and can be used in residential premises, including children's rooms.
Another water-based paint used on wood is AQUACOUT. It dries quickly, forms an abrasion-resistant coating, and has no pungent odor. Inside the room, painted walls and ceilings are updated based on aesthetic criteria, but can last up to 15 years without repair. The floor is painted depending on mechanical loads, but the coating should not be completely abraded to prevent damage to the surface of the wood board.
There are three ways to paint an OSB board after leveling it with putty: with a brush, roller or spray gun. If the surface is being painted for the first time, the paint is applied first with a brush, and after drying with a roller or spray. This method allows you to get a perfectly flat surface without streaks or drips.
How to putty OSB walls? It is recommended to do some procedures before installing the slabs. In particular, prime the ends of the slabs, since they absorb moisture most strongly. This will not be possible after installation.
Another preparatory stage– sanding the surface with sandpaper or a wire brush. It will also increase the adhesion between the sheet and the covering material. If you don’t want to waste time and effort on this, it is better to purchase slabs that have already been polished in the factory. It will cost a little more. When everything is ready, you can start working. By this time, all seams should be sealed with sealant and leveled.
After this, you can begin decorative finishing, be it painting, wallpapering or plastering.
To ensure that there are no problems when preparing the wall and that it does not swell from moisture, it is necessary to select the correct mixture. We have already found out how to putty OSB - with plastic compounds based on polymers, oils, glue, resins or latex. Clear and step-by-step implementation of all recommendations will allow you to create a perfectly flat and smooth surface that will last for many years.
The listed types of putties must have certain properties
Before purchasing, it is recommended that you read the instructions on the packaging and pay attention to the characteristics. Among these special importance represents a very high degree of adhesion, because not every composition will adhere to the resinous surface
When preparing for use, it is important to achieve a uniform consistency. Coating requirements include durability and sandability
If it is necessary to putty Not large areas, then the costs of the compounds are not particularly sensitive. When finishing the entire house built according to frame technology, this hits the budget. There is a recipe for making the composition yourself, which is used by some craftsmen. It consists of inexpensive components:
The cost of factory-produced putty compounds is not too high. However, if large areas need to be treated, including walls, floors, ceilings, then the total cost of leveling may not be so small. Therefore, some masters decide to self-production wood putty.
To create a putty composition you will need the following components:
First, grind the pumice stone to dust. Then pour the resulting mass into a container with linseed oil and stir until we get a homogeneous consistency. Next, pour turpentine oil into the same bowl and stir the mixture well again.
Let the stirred mass sit for several minutes, after which we add the remaining components from the list. The solution is prepared in a water bath, then stirred and infused again. After the last settling, the mixture is ready for use.
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With the advent of polymer-based plastering compositions with high adhesion to wood, the problem of how to plaster OSB on the outside has lost its relevance. The elastic mixture effortlessly lays a thin layer on the base of the slab, tightening minor irregularities. A kind of rubber shell is formed, resistant to mechanical and atmospheric influences.
Suitable for indoor and exterior finishing. Tinted with acrylic dyes. Technical requirements standardized:
Plastering on OSB with elastic putty is performed in the following sequence:
Plastering facades made of OSB is especially practical using decorative polymer compounds:
The high cost of composite structures forces the developer to look for alternative options. Plastering OSB boards on the outside is possible using oil-adhesive mixtures and nitro putties.
The surface is prepared for painting or wallpapering; the humidity in the room should not exceed 60%, and the air temperature should not be lower than +200C. Putty work should begin after the primer has completely dried on the surface of the slab.
If heavy wallpaper is to be hung, then reinforcement is mandatory. For this purpose, fiberglass or nylon reinforcement mesh is used. Fixing the reinforcing material is possible directly onto the putty, and if you decide to use glass fiber, you can glue it using wallpaper glue designed for fixing non-woven wallpaper.
Fixation of reinforcing sheets is carried out strictly joint to joint.
After applying the first layer of putty, the surface of the slab becomes absolutely smooth, but preparation for painting requires the creation of a second (finishing) layer.
The reinforcing mesh or fiberglass sheets are glued overlapping, then a cut is made and the excess material is removed. Thus, a high-quality butt joint is obtained. If an adhesive composition was used for fixation, then further work begins after it has dried.
A layer of adhesive-based putty is applied to the reinforced surface. The thickness of the layer should not exceed 0.2 cm. In rare cases, puttying is permissible to create a layer 0.5 cm thick.
After the first layer of putty has dried (after 3-4 hours), you can use a regular spatula to knock off the scars and sagging remaining on the surface and begin applying the second finishing layer. Its thickness does not exceed 0.2 cm.
An important condition for high-quality work is to process the surface of one wall without stopping. This will avoid the appearance of a sharp boundary between the layers and facilitate the final processing of the created surface. 10-12 hours after completion of the work, you can begin sanding. To do this, you will need sandpaper or a mesh coated with fine abrasive components.
More details about the process in the video:
Carrying out work on puttying OSB boards is not particularly difficult. The quality of the created surface depends not only on the qualifications of the master, but also on the correctly selected putty
When purchasing the required composition, you should take into account all the requirements and recommendations of qualified craftsmen.
Frame houses are fast and affordable way get your own home. But such buildings require a more careful selection of materials to perform insulation and decorating work.
Those who choose plastering are wondering whether to lay plaster on an OSB board on the facade or not, and what compositions are best to choose?
Oriented strand boards (OSB, OSB) must be protected from external negative impact. Because decorative finishing should have the following advantages:
Therefore, to the question whether it is possible to plaster an OSB board, the answer is definitely possible and necessary, since this type of finishing has all the listed characteristics. The main thing to remember is that wood absorbs moisture quickly and a lot, even if it is coated with a moisture-repellent composition.
Before plastering the base, it must be protected with a special layer that will not allow moisture to pass through from the solution. This layer can be bitumen cardboard, paper-based roofing felt, kraft paper or an elastic polymer coating.
This option involves extensive preparation. Without this, OSB boards will constantly be exposed to moisture, which the plastered layer absorbs and transfers to the base.
The preparatory stage includes:
After waiting for the applied primer to dry completely, you can plaster the OSB boards using silicate or mineral mixtures. They have good long service life, decorative and protective properties.
The solution is applied in a thin layer of 1.5 to 5 mm. Therefore, this process is reminiscent of applying putty. This type of plastering of OSB boards requires time and money. But, once everything is done efficiently, the owner can forget about repair work for a long time.
If debts are messing with big amount I don’t want layers, but I still need to decorate the facade and you can use another finishing method. To do this, you will need to purchase polyurethane foam in sheets. Fix it securely to the base. It will perform the functions of thermal insulation.
To attach the insulation, you can use a special glue for external works. When choosing an adhesive composition, pay attention to whether it can be used for polyurethane foam.
A thin layer of plaster solution is applied to the insulation, and reinforcing fiberglass is laid on top of the wet layer and pressed in, leveling the applied solution. After this layer has dried, apply a little more solution in order to hide the places where the mesh may be visible.
After drying, you need to rub and paint the surface. For painting it is better to choose acrylic paint.
The fastest way to apply plaster to the surface of OSB boards is to use polymer compositions based on acrylic or latex synthetic resin. They are available in the form of ready-made solutions. After opening the container, everything must be used very quickly. Because the plaster sets quickly and it is impossible to dilute or restore the original consistency.
Now let’s figure out how to plaster an OSB board in this way.
The polymer layer of plaster does not require painting, but if desired, the owner can change the color of the finish at any time. This method of decorating OSB boards is expensive, but its service life of over 25 years makes it possible to eliminate this disadvantage.
The compositions that are used for plastering slabs harden very quickly, so if the owner does not have experience in this area, then it is better to use the work of a professional team.
