Painting OSB boards is sometimes almost the only option for finishing the material. This technology has its own nuances, but it is the least costly and time-consuming. Before starting work, you need to think about what composition to choose for decorating plates, as well as how to avoid mistakes when painting.
Today, many people prefer to finish oriented particle boards with paints and varnishes for several reasons. Firstly, the paint additionally protects the top layer from moisture. Moisture does not penetrate, which means that the surface is not deformed. Secondly, the use of modern paints allows you to mask the texture of the material, which is formed from large slivers. Thirdly, this technique is less time consuming and is not so expensive compared to the sheathing of decorative panels.
Material selection
If you use an OSB-plate for decoration, then you should familiarize yourself with how to choose a composition for painting. In general, any mixture can be used for this. However, the use of a particular tool has its own characteristics. OSB-plate is made using polymers and resins, so organo-soluble pigments are the best for finishing. This ensures high adhesion of the paint and base due to the fact that the solvent penetrates into the panel.
Thinking about the question of how to paint OSB, you should pay attention to the traditional composition for decoration - oil paint. It has a high viscosity and low absorbency, which provides high-quality coating and the formation of a reliable protective layer.
Oil paint dries for a long time, so you need to use it only when there is no need to carry out repairs in a short time. If you have a question about how to paint the OSB-plate inside the house, then you should consider another option - alkyd enamels or paints for wood panels, the latter of which are made on an alkyd basis. If we compare these mixtures with oil paints, the former penetrate deeply into the material, which provides durability to the coating.
When using an alkyd mixture, the blocking stage can be eliminated, which will reduce the cost of finishing. Many home masters today are thinking about how to paint the OSB plate inside the house. Some advise them to pay attention to water-dispersed compositions, among them acrylic mixtures should be distinguished. However, you should be careful with them, since such tools can contribute to the swelling of the slab under the influence of moisture, this point should be taken into account at the planning stage.
If there is no need to hide the texture, then the material can be treated by impregnation of the type "Valtti Color Satin". Such products form a protective tint film with a semi-gloss or matte texture on the surface. High-metal compositions such as Zinga conductive paint can be used as decor. But such materials require careful preparation of the base, so it is better to use more suitable compounds.
Fire retardant mixtures for metal are not suitable for processing this material. If you want to protect the panel from fire, it is better to prefer flame retardants designed for application to wood. Among such funds, one can distinguish Vuprotek and SPAS.
The choice of paint for the plate when used outside
If you are one of those consumers who wondered what to paint OSB on the street, then you should pay attention to alkyd compounds. The main element of these paints is resin, which is made by burning vegetable oils and acids. When dried, a thin film forms on the surface, which provides reliable protection. The advantage of such a finish is low cost.
Additional benefits are:
- UV resistance;
- short drying period;
- lack of toxicity;
- ability to tolerate low temperatures;
- creation of a moisture barrier.
However, alkyd paint has its drawbacks, they are expressed in a tendency to catch fire and the presence of an unpleasant odor. Among other things, the formed layer rather poorly resists the alkaline environment. Application of alkyd compounds can only be carried out on a dry surface, otherwise you may encounter peeling and the formation of bubbles on the surface of the plate.
Should I choose acrylic paint for exterior decoration of OSB-plate
Modern consumers quite often ask themselves how to paint OSB. On sale you can find acrylic paints, which are the most popular today. They are based on water, while acrylate acts as a binding component. After application to the surface, water particles volatilize, and a polymer layer forms on the base.
The advantages of such mixtures are:
- wide range of shades;
- simple application instructions;
- affordable cost;
- good fire resistance;
- high resistance to high humidity and frost.
Such mixtures are also good because they are environmentally friendly and have no unpleasant odor. Their life is quite long. After purchase, the water emulsion should not be stored for a long time at a negative temperature.
Exterior latex formulations
Latex paints for OSB are water-based compositions in which latex acts as a binder. The cost of such paints is quite high, but the price pays off thanks to the unique technical characteristics, among them:
- high elasticity;
- strength;
- resistance to atmospheric phenomena;
- full waterproofing;
- durability;
- environmental Safety;
- the possibility of wet cleaning.
Why choose latex paint
If you use latex paint, then even when the base is deformed, the layer will not become cracked, outwardly it will remain quite attractive. Latex paints are resistant to mechanical stress. They seal the surface and make cleaning easy, because you can even use chemical compounds for this. During the application, you will not feel any discomfort, since latex paints do not have an unpleasant odor.
Varnish selection
If you want to purchase a varnish for OSB, then you can prefer alcohol compounds that are made by dissolving natural resins in methyl or ethyl alcohol. The resulting mixture allows you to tint the slab using natural pigments to give the desired color. To improve the gloss, mastics are added to the varnish, which increase the gloss of the coating and soften the film.
Is it worth using urethane compounds
Urethane varnishes form a film resistant to mechanical stress on the surface. Choosing a pure urethane varnish, you get a mixture that has medium wear resistance. Manufacturers sacrifice it in order to increase the elasticity of the film.
If you still cannot decide for yourself how to paint the OSB, then you can get acquainted with the characteristics of epoxy varnishes. They are two-component compounds that are highly toxic. The latter feature makes the wizard use personal protective equipment when applied. Harmful substances will be released within 4 days after applying the mixture. Then the composition gains chemical inertness and strength.
Application technique: preparing the plate for staining
The quality of the painting will depend on the correct preparation of the surface. At this stage, you should increase the adhesion of the material, extending the durability of the decorative layer. Staining is best done prior to panel installation. However, this may affect the aesthetics of the design. The surface of the plate should be sanded using sandpaper. This is done to mask the recognizable texture, as well as to remove the protective layer, which could prevent the penetration of the primer into the thickness.
If you have already decided how to paint the OSB, it is important to remove the lacquer-wax coating from the plate with the marking 3. All irregularities and attachment points of the screws should be leveled with putty. In this case, the most suitable mixtures are those that are made on an oil-glue basis. The seams between the plates are filled with the same mixture. But in most cases, the border between the details appears under the paint, so experienced craftsmen try not to spend time on camouflage, but hide the seams with decorative strips.
Additional recommendations
After the layer has dried, it should be cleaned with a sandpaper until a smooth surface is obtained. The next step is to apply the primer for the OSB board. The easiest way to primer is the use of waterborne varnish for wood. Acrylic polyurethane or acrylic composition should be diluted and applied to the plates, achieving uniform impregnation. An alkyd varnish acts as an alternative solution, however, its dilution is carried out with white spirit.
An excellent option would be to use Aqua filler adhesive primers . This will isolate the base from the paint layer, which is not always useful. Sometimes essential oils and resins from the thickness of the plate appear under a layer of light pigment, and spots appear on the finish.
Application of the composition
If you have a question about how to properly paint OSB, then you should familiarize yourself with the technology. The instructions for painting are familiar to anyone who has at least once encountered painting work. First, the perimeter of the surface is painted with a brush, then the paintwork is applied using a roller over the main area.
Rubber paint for OSB-boards is also used quite often. It should be applied to unprocessed wood after grinding and coating the surface with an antiseptic. Control staining will allow you to evaluate the density of the composition, the exact drying period and color brightness. Work should be abandoned if the weather is windy and the air has high humidity. The effect of direct sunlight on the applied layer should also be excluded.
Conclusion
OSB-plate is usually painted if it was used in the interior design of the room. This is due to the fact that the outside of the material will be affected by climatic factors, therefore it requires more serious protection. After staining, the plate is usually covered with an additional layer of varnish, which protects the pigments from ultraviolet radiation, and the base - from damage.