How to paint OSB boards outdoors: advice from professionals

Why do you need to paint slabs?

To understand whether OSB boards are painted, you should familiarize yourself with their composition and appearance. They are a light, warm material that is used in the construction of external structures, internal walls and partitions. The panels may differ in brand; for the outer part, dense products are used, the markings of which have the numbers 3 or 4. Since the material is created by pressing wood chips and glue, it is breathable, environmentally friendly, but it is sensitive to atmospheric influences.

When creating slabs, wood shavings and chips are oriented longitudinally in the outer parts, and across the fibers in the middle. Because of this, the strength and thermal insulation properties of OSB boards are created. Is it necessary to paint OSB boards outdoors? The surface of the material is pleasant and warm to the touch, but does not have an entirely attractive appearance. That's why it needs to be painted.

Another reason for covering with a special product is to protect the material, and therefore the house, from destruction, moisture, mold, and fungi. Although the products are moisture resistant, the connection areas are vulnerable. Therefore, such facades must be painted. Only before this, it is necessary to clean off dust, as well as putty and primer. It is important that there is a delay between procedures. After puttying, you need to allow at least 12 hours to dry. The same period is provided for complete drying of the primer.

Finishing OSB walls inside the house.

OSB sheets, also known as OSB boards, are increasingly used for arranging walls and interior partitions in houses.
Not surprising, because it is a lightweight, inexpensive and very practical building material. Therefore, the question of their finishing arises. Here we will look at the main methods of finishing walls made of OSB sheets inside the house. You can learn about methods for finishing OSB sheets outside the house in a separate article: finishing OSB walls outside the room.

You can read about the technology of attaching OSB boards to walls inside a house on the page: technology of covering walls with OSB boards inside a house.

The walls in the house are made of OSB (OSB) sheets.

The OSB board itself has a distinct wooden structure. Therefore, it can be left unchanged, covered only with stain to further emphasize the beauty of the material or give it a different shade. If you plan to paint, wallpaper, tile, etc., then it is important to remember one feature of oriented strand boards. This is the presence of a special impregnation of wax, resins, paraffin, with which any finishing material does not combine well. Therefore, in such cases, a prerequisite for finishing OSB is a preliminary primer.

More details about what OSB or OSB boards are can be found in a separate article: what OSB sheets are, their types and characteristics.

Alkyd

How to paint an OSB board outdoors to get a high-quality result? Alkyd paint is great for these purposes. It is perfectly absorbed into wood and dries quickly due to its water component. But this fact is associated with a lack of funds.

The paint can be stored at positive temperatures, but when hardened it can withstand frost up to 30 degrees. The disadvantages include a low level of resistance to fire and alkalis. Alkyd paint is in demand due to:

1. No unpleasant odor or harmful formations.
2. Quick drying, long lasting color retention.
3. Excellent hiding power or the ability to obtain a smooth surface without drips.
4. Long service life.
5. Affordable price.

Video description

For a clear idea of ​​how to paint OSB, watch this video:

Latex paint

This material is made of water, a special emulsion and latex. The coating is expensive, but it has many useful properties. The advantages of latex paint include the following:

1. long service life, which exceeds 15 years;
2. quick drying after application;
3. protection from any mechanical influences, does not lose its properties under strong impacts;
4. prevents exposure to moisture;
5. is an environmentally friendly material;
6. can be cleaned by any means.

Painting OSB with acrylic paint Source wp.com
However, such material is very expensive, so it is used very rarely.

Acrylic

How to paint an OSB board outdoors to protect the material from various influences? Suitable acrylic paint that has a polymer component, colors and water. The main property required for outdoor service is the ability to create a reliable film.

Acrids have good adhesion and OCB. These properties influence the demand for paints for facade finishing. Manufacturers produce mixtures not only of rich shades, but also with different physical characteristics. The surface of acrylic paint can be matte or glossy, transparent or dull. Such mixtures:

1. Dries quickly and is very durable.
2. Used for processing porous, loose surfaces.
3. They are water- and vapor-tight.
4. Tolerates significant temperature changes.

How to create a patina effect?

Patination is a decorative technique that allows you to “age” a product. The patina looks beautiful and unusual. The patination process includes the following steps:

1. Apply one or several layers of stain, previously diluted with acetone, to the surface. It can be diluted with water, but it does not evaporate so quickly, which significantly delays the work.
2. Prime the treated oriented strand sheet.
3. Apply a layer of patina to the work surface.
4. Wipe the product with a dry sponge. This allows you to remove the patina from the protruding elements of the work surface and leave the paint only in its recesses.
5. Varnish in several layers so that the decorated area does not change color and is not damaged by external factors.

Oily

How to paint an OSB board outdoors so that the material does not deteriorate from various influences? Oil paint is classic. Compared to modern mixtures, it is less in demand because it has some harmful properties:

1. High toxicity. During work, you must use protective equipment.
2. It takes a long time to dry, since drying oil becomes the basis for obtaining paints.
3. It takes experience to apply the product evenly.
4. Due to its low durability, the surface needs to be renewed frequently.

The advantages include excellent absorption into the surface and ease of storage. Thick paint can be thinned with drying oil.

Latex

What paint to paint OSB boards for high-quality home protection? Latex paints suitable for wood are used. To create mixtures, ordinary water, acrylic resin, and latex polymer liquid substance are used. It is with it that ordinary acrylic enamel becomes a coloring composition.

The composition is based on polyvinyl, silicone, and other additives to improve performance. Facade paints are created to produce OSV with texture and density.

Water-based

If you are interested in what is the best way to paint an OSB board, then you should pay attention to water-based paint. It is used for finishing external walls. The product is suitable for renewing concrete and stone materials, which must first be treated with putty and primer. Aqueous emulsions are divided into:

1. Silicate. The base includes liquid potassium glass. Steam resistant paints.
2. Silicone. They contain silicone resin and fungicidal additives. After drying, they do not allow water to pass through and repel dust and dirt.

The best way to paint an OSB board on the outside is up to each owner to decide for himself. The above products are ideal for this job.

Coloring

These products are considered special, so their processing is carried out non-standardly. The working surface is flat, it can be smooth and somewhat rough. Before finishing, the surface should be treated with a special tool.

The edges may be porous, so they absorb more pigment, resulting in uneven color. The defect can be eliminated using putty for exterior use. It will remove joints and seams, after which primer treatment is required. The procedure will improve the adhesion of the dye to the OSB panels. It also protects from harmful influences.

If defects or unevenness appear during installation, then the entire façade needs to be puttied. For outdoor work, paint is applied at least 2 times. A better visual result and a more durable surface is provided by painting in 3-4 layers.

Preparing the surface for further decoration

Before you begin the actual design of the surface, it is necessary to carefully prepare it. The technology for pre-treatment of surfaces may differ depending on the type of material that is planned to be used in the future.

Under wallpapering

You shouldn’t just glue wallpaper onto bare OSB boards. You must first do the following:

1. Using putty, attach the mesh to the joining seams. It will make the slab level and all hints of joints will disappear.
2. Dilute the OSB primer according to the instructions and apply an even layer. Allow the material to dry completely.
3. Once the primer is dry, you need to apply the putty as evenly as possible. Let this product dry too.
4. When the putty has completely adhered to the surface, it must be processed using sandpaper. This will make the surface smoother.
5. Next, you need to make another layer of OSB primer and make sure that the surface is smooth without protruding elements. If they are present, such as small pieces of primer sticking out of the wall, then they should be removed with sandpaper and another primer coat done.
6. After the surface has completely dried, you can decorate the particle board with wallpaper. Wallpaper is glued in the usual way.

Important! Applying a primer for wallpapering on OSB is a must. The fact is that this product will provide good adhesion between the wallpaper and the wall.

For painting

Simple painting of slabs always ends with uneven application of the paint material and the presence of visible stripes. This can easily be avoided if you do the following preliminary work:

1. Cover all joints with putty or seal with foam. After drying, the foam needs to be cut off so that it becomes flush with the plane.
2. Apply a layer of putty to the surface. This will help completely hide all the joints.
3. If the wall is not planned to be textured, then it must be sanded well. Then apply a layer of primer, carefully ensuring uniform application. For a better effect, it is recommended to do two layers of primer.
4. Paint the wall with a roller. It is important to apply paint to the entire surface area at once. If you interrupt during work, some areas will dry faster. And you will get stripes.

Advice! To avoid streaking, it is recommended to apply two coats of paint. The first one will simply create the color. The second one can level it.

Using the same principle, you can paint and prime the ceiling and walls.

Under the tile

The tile will adhere well only to a pre-treated surface. Bare application will cause the tile to peel off from the plane. To prevent this from happening, it is enough to cover the surface with two layers of primer mixture for OSB boards.

You may not achieve perfect application and leveling of the surface. The main thing is that the tile has something to cling to. It is recommended to pre-cover the joints with putty.

Color options

How to paint an OSB board outside? This work can be done in one of the following ways:

1. Spray gun or spray gun. This method is effective for an even, durable coating. Painting with such a device is quick, but it increases paint consumption. In addition, the mechanisms are expensive. This method can only be used in calm weather using a respirator.
2. Paint brushes. This option is labor-intensive and time-consuming.
3. Paint rollers. Rollers are used to speed up the process. With this tool you can quickly and efficiently update large areas. Used for different mixtures.

Details

The internal surfaces of OSB boards are sprayed. You can also take a roller to paint the ceiling with water-based emulsion. In hard-to-reach areas, apply the product with a brush. When applying the first layer, you need to control the uniformity. If you use water-based varnish, you need to monitor whether the slabs are damaged by moisture. Strokes should be done in one direction.

Before applying the next layer, you need to take breaks to dry the surface. To do this, you need to wait 6-8 hours, the time is determined by the type of paint. Drying should be natural at a stable temperature. Drafts should not be allowed.

The outside of the house is exposed to negative factors, so you need to choose high-quality paint for it. You need to pay special attention to the ends. Sharp edges of the slabs should be rounded with a radius of about 4 mm. Then the surface is cleaned of dust and a primer is applied.

When choosing paint for the final finish, you need to pay attention to the aesthetics of clear varnishes. Many people do not tolerate sunlight well. Water-based paints often deform slabs. Organosoluble, alkyd, oil products will be the most suitable. The principle of operation is the same as indoors. But at least 3 layers are applied to the facade.

Varnishing

What varnish to paint OSB is an important question when processing tile material on the floor. It is taken into account that a varnish composition that is resistant to abrasion and mechanical stress is needed. Furniture is placed on the varnish coating and people walk on it.

Acrylic varnish is recommended for parquet. Its technical characteristics match the requirements of OSB floor covering material. The coating looks beautiful. You can choose gloss or matte finish.

Working with LM is easy. The slab is prepared before applying the varnish layer:

• putty treatment;
• The primer is used to smooth out uneven surfaces and the joints of the plates.

The varnish coating is applied to a dry surface. Dust is removed especially carefully after puttying and sanding.

The covering layer is multi-layered. A minimum of 3 coats is recommended. Then the service life of the surface increases. Places damaged over time are restored.

The varnish composition is applied using a roller or brush. The first layer is dried and sanded. Sandpaper is used for this. The dust is removed and the next layer is applied. The final coating is sanded especially carefully. To polish it, you need a soft rag or a soft attachment on a sander.

Nuances

First you should touch the joints of the OSB boards. The treatment of these areas will be positive, but not for long, since during the installation of the house the slabs “play” and the putty cracks and falls out of the seams. This will negatively affect the appearance of the facade. There is another option for decorating narrow areas - using decorative overlays. They cover the seams after painting. They are needed as protection and a design element.

The painting activity is carried out from the top of the wall so that the paint does not flow onto the drying area. You also need to take the weather into account. It is preferable to do finishing at positive air temperatures.

It should be remembered that a painted facade is considered unpretentious during operation, but maintenance is still required. The materials are usually impact resistant. Walls must be washed regularly with detergents, unless otherwise advised by the manufacturer. Do not use stiff bristled brushes as this will damage the finish.

Thus, OSB boards must be processed. Paint will be an affordable and effective option. The house will be reliably protected from various adverse factors.

What and how is it better to paint a slab on the street, outside the house?

When choosing a coloring composition, you must take into account: the facade of the house is sheathed with building material, or the structures being treated are located inside the living space (ceilings, walls, floors). There are many options for coloring agents, however, when it comes to outdoor work, they have strict requirements. Houses externally sheathed with OSB are constantly exposed to the destructive effects of external factors, so the paint should not only improve their appearance, but also prevent rotting, resist the effects of precipitation and ultraviolet radiation.

The coloring compositions that will be discussed below are used according to the standard scheme. It is more convenient to apply them with a roller on an extended handle. The edges of the sheets require painting in several layers.