How to plaster on an OSB board on the facade and inside the premises

Whether you are plastering an exterior wall or an interior space, OSB (Oriented Strand Board) can give your walls and facades a smooth, polished appearance. Plastering traditional wall surfaces is not the same as this process because OSB boards have special properties that need to be taken care of in order to ensure proper adhesion of the plaster.

Knowing the fundamentals of priming OSB boards for plastering can help you save time and effort. In order to establish a solid bond between the plaster and the board, it entails making sure the surface is clean and appropriately primed. We will guide you through the process of applying a long-lasting and visually appealing finish to the interior and external walls of your house.

Whether you’re updating the facade of your building or adding aesthetic appeal to a room, learning how to plaster on OSB will greatly enhance the appearance and longevity of your surfaces. Let’s examine the useful procedures and advice to assist you in completing the task correctly.

Is it possible to plaster OSB

Oriented strand boards are used as facade cladding and interior decoration. Surface decoration techniques include painting, plastering, wallpapering, and tiling.

Building codes allow for the placement of OSB. Finishing is required to improve the coating’s strength at the base, give it moisture resistance, and improve the premises’ ability to insulate against noise and heat. But it’s crucial to choose materials based on the operating environment (high or medium air humidity).

• waterproof;
• resistance to mechanical damage;
• resistance to temperature changes;
• vapor permeability;
• environmentally friendly composition;
• high level of fire safety;
• long-term operation;
• maintainability;
• resistance to mold and mildew;
• non-exposure to ultraviolet rays;
• light weight of the slab (does not weigh down the supporting structure);
• affordable price;
• simple application of the plaster mixture;
• Possibility to do the finishing yourself.

Why do OSB panels need to be plastered for external and internal use?

• creation of additional noise and heat insulation of the building;
• formation of a monolithic base for decoration;
• adjustment of joints, seams, cracks and surface defects;
• embodiment of the author"s design of facades, interior walls;
• increasing the service life after repair;
• protection of the coating from moisture, sunlight, insect pests;
• prevention of mold, mildew;
• reduction in the cost of heating the room due to the use of insulation in the plastering process.

Pros and cons

• leveling the base;
• increasing the durability of the design;
• increasing the strength of walls, facades;
• the ability to change the shade of the decorative finish;
• the coating is not damaged by wet cleaning;
• simple technologies for applying the mixture;
• the ability to repair sections of facades, interior walls, etc..

1. Products of different classes are produced, when buying it is important to study the composition of the boards. The blocks should not contain synthetic resins.
2. Some types of sheets should be covered with plasterboard or other finishing materials.
3. To maintain a comfortable atmosphere, it is necessary to install ventilation systems.
4. After plastering, additional decorative finishing may be required.

What kind of plaster is used for OSB boards

• mineral;
• elastic;
• polymer;
• decorative, etc.d.

• rough (leveling);
• finishing (for decorative finishing);
• heat-insulating;
• noise-absorbing;
• X-ray protective;
• waterproofing, etc..

• for interior work (in heated rooms);
• exterior (for facade and interior finishing);
• universal.

The binding agents, filler type (natural or synthetic), and functional additives vary amongst compositions.

Mineral

The slabs can be plastered using a mineral composition made of lime, cement, gypsum powder, or clay. The mixture’s improved strength, eco-friendly components, good vapor permeability, and resistance to temperature fluctuations are its advantages. In addition to being reasonably priced and UV resistant, plaster is non-flammable. The material is long-lasting, waterproof, and able to be repaired.

The low elasticity of the finishing agent is a drawback. Because of the possibility of cracking, this product is not advised for processing walls that are subject to mechanical stress. Manufacturers sell mineral compositions either as a dry powder or ready-made. The ratios of the ingredients are considered when making the solution. Mineral mixtures based on gypsum are not utilized for facade finishing.

Elastic

One can purchase this ready-made plaster mass. Acrylic resins are used in the product as binding agents. Because of the material’s enhanced plasticity, the composition stretches when the base is loaded, which is an advantage.

The plaster is easy to apply, long-lasting, waterproof, and comes in a variety of shades. It also has good adhesion. It is advised to use this material when finishing new construction and structures located in seismically hazardous areas. Repairing the coating is simple. It is imperative to consider the plaster mixture’s low vapor permeability, low resistance to ultraviolet radiation, and high cost.

High strength and long-lasting super-elastic silicone compounds are also included in this class of materials.

These products are pricey and challenging to clean once they harden. OSB boards can be plastered indoors using elastic mixtures.

Polymer

This plaster is used to apply the finishing coat and is of the decorative variety. Polymer acetate, acrylic, silicone, and siloxane are among the polymer mixtures in this class. Breathability, improved heat and sound insulation of the space, durability, environmental friendliness of the composition, and resistance to mold and fungus are the benefits of this kind of product.

Because polymers are used as binding ingredients, the plaster is waterproof. The product is available ready to use or as a dry powder. The type of reagent and the amounts needed to prepare the mixture are specified in the instructions. Such plaster is more expensive than mineral-based materials.

• water soluble;
• soluble in organic diluents.

Decorative

OSB wall panels are finished decoratively using factory-made plasters.

• structural;
• stone (mosaic, marble);
• textured;
• colored;
• Venetian;
• flock.

Applying decorative plaster in multiple layers and using specific tools (such as texture rollers and hard brushes) allow for the replication of texture. You can simulate stone or brick work on a cement plaster foundation. After layering the plates two or three times and surface staining, the bases with a plain coating are made.

The inclusion of fillers (granite, marble crumbs, etc.) alters the texture of the material, making textured plastering mixtures unique. Plaster has the advantages of being malleable, strong, resistant to temperature fluctuations, and simple to apply to a base. It also doesn’t shrink after drying.

Surface irregularities can be rectified by using the textured composition. Using mother-of-pearl particles, mica, coloring pigments, etc., you can alter the shade’s saturation. The material contributes to improving the room’s insulation against sound and heat.

Since the compositions don’t include any dangerous materials, they can be used anywhere to finish outdoor projects as well as public and residential areas.

Natural tones and other natural shades are the primary presentation for textured materials. The best effect is to use colors like golden, brown, and ocher to simulate a wood base. Neutral materials like steel, white, and gray are used in public areas. When it comes to finishing bedrooms and small spaces, light colors work best.

• "bark beetle";
• brick;
• with imitation of silk;
• travertine, etc..

The "bark beetle" composition is produced by manufacturers in a range of hues and granule sizes. The material is applied at the conclusion of finishing work and is one of the finishing varieties. The coating is meant for use on wooden bases, plasterboard, stone, and cement. You can mix different mixtures according to the type of granules and shades in the finishing. Both internal and external processing can be done with the material.

It is possible to replicate the appearance of such masonry by using brick plaster. The arrangement works well in rooms that are minimalist, bohemian, grunge, or loft styled.

Impersonating silk fabric in plaster allows the room to appear larger than it actually is. You’ll need a roller and a sprayer in addition to a specific mixture. Tools are used to smooth the plaster application. Consequently, a smooth finish is produced, ideal for Baroque, Classic, Rococo, Renaissance, Art Nouveau, and Provence interior design themes.

Stone-like surfaces are replicated with plaster that has a travertine texture. The tones are brown, golden, and sandy; the color range is natural. Layers upon layers of two-tone mixtures are used to create the coating. The formed plaster base is given a texture. Wax is applied to the composition at the end of the process to enhance its appearance and lessen its hygroscopicity.

Methods for plastering OSB boards outside the house

• traditional method without insulation;
• with insulation;
• using plasterboard sheets.

Traditional method

It is advised to use a membrane material with high vapor permeability for finishing, as well as drawn-out and die-cut mesh for base reinforcement, glue, and plaster composition, when plastering without insulation.

1. The membrane material is fixed to the surface with a stapler.
2. The membranes can be replaced, if necessary, with kraft paper, bitumen cardboard or roofing felt.
3. The sheets are connected by an overlap of 10 cm using glue or double-sided tape.
4. The reinforcing mesh is fixed on top.
5. Then an adhesive base is applied in 2 layers for reliable fixation of the reinforcing mesh.
6. After drying, the base is sanded, then a primer mixture is applied.
7. For plastering it is recommended to use elastic mixtures, t.To. these materials are less susceptible to cracking.
8. It is important to process the ends of the slabs for durability of the finish.

Insulation and plastering outside

By insulating the facades before plastering, you can apply the plaster mixture more firmly and reliably while also freeing up more space inside the building. Adhesive-bonded sheet foam is the suggested insulation choice for the panel.

Dowels are used to secure the material to the surface once the adhesive base has dried. The foam blocks, which are packed with mounting foam, create joints. After drying, the hardened mass’s remnants are cleaned off. Adhesive solution is applied to the mesh in the subsequent layer. After the glue has dried, plastering is done.

Using plasterboard

After the plasterboard is fixed, OSB board plastering can be applied to the facade. GKL are used to level the material’s base and provide extra insulation. Plasterboard, when combined with OSB panel, will increase the building’s ability to insulate against sound and lower the risk of fire. Screws are used to fasten the materials. Next, the base is gradually covered with plaster and putty. Plasterboard made of gypsum is versatile and works well with a variety of plaster finishes.

Features of plastering on OSB indoors and on the facade of the building

Both inside buildings and on facades, OSB board plastering is done. It’s crucial to pick days with calm, dry, and warm weather when working outside the building. The region is shielded from the sun and potential precipitation by a canopy. The ideal temperature range for air is +5–+35°C.

It is more comfortable to work indoors, where the air humidity should not rise above 65% and drafts are not allowed when wall finishing. Using fans and other heating sources to hasten the drying process of panels is not advised.

In the event that these conditions are not met, cracks could show up after plastering. Prior to commencing work, the room’s electrical wiring needs to be de-energized.

Tool

• a set of metal spatulas;
• a trowel;
• a building level;
• a float with a sandpaper attachment for grinding;
• a roller;
• a construction mixer;
• masking tape;
• brushes;
• rags.

When plastering over OSB boards, walls—whether inside a room or on the exterior of a building—can look better and last longer. It’s crucial to correctly prepare the OSB surface by cleaning it, applying a suitable primer, and then carefully applying plaster to achieve a smooth, polished finish. This procedure guarantees a durable and attractive finish by giving the OSB an additional layer of protection in addition to a more sophisticated appearance.

OSB surface preparation

The base needs to be ready before plastering the OSB board. Dust and oil stains are removed from the surfaces, and any unevenness is sanded. For cleaning, specific products based on organic solvents—such as white spirit—are utilized. To create a smooth base for finishing, the areas are puttied and primed, and the seams need to be sealed with plastic sealant.

Step-by-step plastering technology

1. After installing the panels, the surface of the walls is checked.
2. Stains are cleaned, unevenness is sanded.
3. The areas can be finally treated with a vacuum cleaner.
4. The joints are coated with a sealant.
5. The seams are puttied and leveled.
6. The wall is dried, covered with a primer with a roller or brush.
7. After drying, vapor barrier materials are applied to the soil (roofing felt, membrane cloth, etc.).d.) and fixed using a stapler.
8. A layer of adhesive base up to 3 mm thick is applied on top.
9. Then a reinforcing fabric is applied, straightened, pressed into the adhesive base.
10. After 24 hours, a layer of adhesive mixture is re-applied on top of the mesh for leveling and dried.
11. Then priming is carried out using a product suitable in composition.
12. After the primer has dried, finishing plastering work is carried out.
13. The plaster is applied in the selected way to form an optimal texture on the surface.
14. The finish is dried, painted or covered with a transparent varnish.

Step	Description
1	Prepare the OSB board surface by cleaning it and making sure it"s dry and free from dust.
2	Apply a primer to the OSB board to help the plaster adhere better.
3	Install a mesh or reinforcing layer if needed to provide additional support for the plaster.
4	Mix the plaster according to the manufacturer’s instructions.
5	Apply the plaster to the OSB board using a trowel, ensuring an even coat.
6	Allow the plaster to dry completely before applying any additional coats if needed.
7	Finish the plaster by smoothing it out or adding texture as desired.

A practical way to get a smooth, finished surface indoors or on a facade is to plaster over OSB boards. You can improve the look and feel of your space by taking the right measures to guarantee good adhesion and durability.

Make sure everything is ready before you begin. Plaster bonding requires both a suitable primer and thorough cleaning of the OSB surface. Weatherproofing techniques are necessary for outdoor applications in order to shield the plaster from moisture and temperature fluctuations.

Work in manageable sections and adhere to the mixing and application instructions provided by the manufacturer when applying the plaster. By doing this, you can prevent problems like uneven or cracked surfaces and achieve a consistent finish.

Plastered surfaces can be kept in good condition with routine upkeep and inspection. Resolve any problems as soon as possible to preserve the structural and artistic integrity of your work.

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