What to consider when choosing a protective coating
The material for making OSB is mainly aspen; other species are used less frequently. Resins and polymeric substances are used to connect the chips. It is this feature that ensures that the surface is not wetted or impregnated with a large amount of products. It is also strictly not recommended to paint the slab with compounds that dissolve in water. For this purpose, products containing polymers are used.
A special feature of OSB boards is increased roughness and a large number of irregularities on the surface. Before painting, it is worth carrying out preparatory work. This will reduce the amount of paint and improve the quality of the protective layer.
If OSB was used for work outside and did not provide additional protection, then the quality of the slabs, as well as the appearance, decreased significantly. Before starting painting work, the material should be cleaned of dirt, sanded, treated with antiseptic substances, and after that painting begins.
The primer or paint should be applied in an even layer in one direction Source nashaotdelka.ru
For painting, it is worth purchasing compounds that protect the material from the sun, otherwise the slab will begin to delaminate and will require re-treatment after a short period of time.
The most suitable paint option for OSB for exterior use is a product that is made on the basis of polymer substances and is intended for application to wooden surfaces. Before painting the surface, preparatory work should be carried out. It is leveled, puttied and primed.
By painting you can even turn the surface into a “tiled” one Source i.pinimg.com
With the help of OSB you can realize the most daring and unusual creative ideas Source drevplity.ru
Caring for painted OSB
With the correct choice of decorative composition and compliance with the preparation and application technology, further procedures will be as follows:
- After 5-7 years (depending on the composition), a light treatment with a thin layer of diluted solution can be performed to revitalize the surface.
- Significant difficulties arise due to the shrinkage of the house; more serious reconstruction may be required. But if the frame was positioned accurately, observing the gaps, then you will only need to rearrange the moldings on the outside and minor finishing work on the inside, followed by painting in the desired color.
- Worn flooring is re-sanded and varnished.
Painting OSB is not the most difficult process, requiring accuracy and a precise sequence of all actions to obtain a high-quality result.
Exterior products
Alkyd based paints
Such paints for OSB are in great demand due to their ability to penetrate the structure and protect the surface from harmful influences for a long time. After painting with such substances, the surface is provided with full protection, and there is no need to varnish the wall. After drying, alkyd enamel covers the surface with a film that protects the OSB from high humidity, frost, heat and sun. To ensure a high level of adhesion, it is worth preparing the surface, otherwise the paint will begin to peel off or form bubbles.
A layer of paint not only gives the material a beautiful appearance, but also helps protect it from the destructive effects of various factors Source stroyfora.ru
Oil paints
Such products are very viscous and take a very long time to dry, but they form a very durable layer that protects the surface from water vapor or the sun. This method is considered somewhat outdated, and the period of operation of such coloring is relatively short.
Such compounds have a high level of toxicity, so you should use a respirator when working with these substances. During the painting process, smudges may form, so you should monitor the thickness of the paint layer.
The paint dries within 24 hours. Over a long period of use, the layer may crack or peel off.
The OSB board is destroyed under the influence of water and other external factors, so after installation it should be coated with special means to maintain quality over a longer period Source nashaotdelka.ru
See also: Catalog of house projects with facade finishing made of imitation timber
Acrylic paints
Before starting work with acrylic-based materials, you should coat the material with a primer that prevents the formation of fungi. Waterproof acrylic paint for OSB will hide imperfections and help achieve an even tone. Acrylic-based products do not emit toxic fumes or unpleasant odors, provide protection against destruction, and also have a wide variety of colors.
Before making a choice, it is worth carefully studying the conditions under which the material is planned to be used. OSB paints for exterior use, based on latex, polyurethane or alkyd resins, form a stable film with a low level of permeability on the surface. The only drawback of such materials is the high price. Compositions based on polymers make the surface less susceptible to high humidity and ultraviolet radiation. Acrylic paints are used for walls that need regular washing.
Oil paint needs regular updating Source krrot.net
Features of using paints that contain water
Such products are not suitable for OSB boards, as they lead to changes in the structure and contribute to deformation. In situations where the appearance of the surface is not important, such compositions on water are still used. But, if you cover the slab only on one side, then it is guaranteed to be deformed.
Material characteristics
Surface of particle boards
OSB (OSB) or oriented strand board is a sheet building material made from woodworking products (most often flat softwood chips) glued together in 3-4 layers.
The material is formed by hot pressing. The binding element is waterproof phenol-formaldehyde resin with the addition of synthetic wax and boric acid.
The name OSB is a transliteration of the English name OSB - oriented strand board.
The entire slab has a thickness of up to 3.8 cm and a length of up to 2.5 m. For production, chips of a strictly defined size are used: from 0.6 to 4 cm in width and 18 cm in length. The order of the layers in the sheet also matters: the inner ones are laid transversely, and the outer ones - lengthwise.
This structure gives the material the properties of a plywood sheet:
- increases rigidity
- prevents deformation during installation
- increases resistance to mechanical damage
Application of OSB panels
OSB is used as rough flooring (under laminate, carpet, linoleum) or wall material for construction:
- temporary structures
- frames
- small architectural forms
- converting an attic into a living room
The material is also used as a raw material for the production of sandwich panels, I-beams, as a flooring for bitumen shingles on roofs and load-bearing structures of panel formwork.
OSB competes with bakelite and regular plywood as a structural material, and fiberboard, chipboard and plasterboard as a finishing material.
How to choose the right tools for working inside a building
There are more stringent requirements for painting OSB boards indoors. Many types of paints and varnishes, which are based on polymers, can be harmful to health.
Stain and varnish
Such products are used only in cases where they want to emphasize the structure of the surface. It is covered with stain with a patina effect, and then a varnish based on polyurethane or vinyl is applied.
Acrylic based products
With this paint you can achieve a uniform texture. This composition is convenient for covering not only walls, but also floors.
Wait for good weather to work outside the building Source krrot.net
See also: Catalog of companies that specialize in finishing materials
Glazing azures
Such transparent and thin paints for OSB for interior work are produced on the basis of acrylic or alkyd substances. They give the material the necessary shade and help preserve the structure. If the glaze contains alkyd substances, it should be used only for exterior work, while acrylic-based compositions are used for all types of work. There are special azures for OSB. Products for working outside the building must be resistant to solar radiation. Such information is indicated on the label or instructions.
In some cases, it is preferable to leave the surface in its original color, for which transparent varnish is ideal Source remont.adstores.ru
Stain is used to emphasize the structure of the material Source gidpokraske.ru
Recommendations for choosing the right composition
To correctly decide what to paint OSB with, you need to take into account the type of binder of the slab, the expected loads on the surface, and also decide on the decoration method.
General tips to help you make a choice:
- For children's rooms and bedrooms, it is better to use water-based paints - they are environmentally friendly and safe for health.
- In rooms with high humidity, polyurethane compounds based on organic solvents should be used. In combination with resins, such paints create a durable, wear-resistant, washable coating.
- Self-leveling epoxy compounds are suitable for treating the floor and creating a smooth surface.
- Alkyd enamels are suitable for painting walls and floors - the paint forms a durable, wear-resistant coating.
What preparatory work should be carried out before painting?
First of all, you should install the stove in a permanent place. It makes no sense to paint the slabs, since during the installation process chips, cracks and joints will appear that need to be repainted. The quality and stability of OSB painting depends on how carefully the preparatory work was carried out.
Unusual idea for the ceiling Source stroypomochnik.ru
Preparation and application of paint
When painting OSB, it is better to apply paints and varnishes in two layers. The first is diluted with the addition of 10–15% of the appropriate solvent. This can be water, acetone or petroleum solvents, depending on the composition of the paint. The second layer is applied with solid paint.
There is a significant difference in whether the slabs are painted before or after they are fixed. In the latter case, it is necessary to paint the underside as well, otherwise uneven moisture will inevitably warp the slab. On the other hand, painting already installed slabs is characterized by lower consumption, but such cladding is inferior in moisture resistance, especially considering the lack of protection at the ends.
When painting OSB, it is very important to adhere to the strategy of applying many thin layers, no matter how great the temptation to smooth out the rough edges with a thick layer of thick paint. In the latter case, uneven absorption and, as a result, paint peeling is possible, especially when working with class 3 and 4 boards
Features of preparing OSB boards for wallpaper
In order to prepare the surface for this type of work, it is dried, leveled and all roughness and irregularities are removed. Particular attention is paid to seams at the joints of sheets. You can go the usual way and sand it, and then cover it with different types of primers. But, it is much easier to level the slab with putty.
Surface preparation is the main stage of work, which ensures high quality results Source indeco.ru
It is also worth considering that the stove is made of natural wood. It will absorb all the moisture from the wallpaper glue and swell. In order to avoid unwanted consequences, it can be coated with acrylic paint.
- Stages of work:
- All seams must be carefully puttied, and each of them must be covered with a special mesh.
- After this, it is worth covering the entire surface with a primer. This step is mandatory and protects the stove from exposure to water or steam.
- Prepare the putty mixture and coat with OSB. The putty is applied from bottom to top. After the plaster is dry, it should be sanded with sandpaper.
- A finishing primer must be applied to the surface. To do this, it is advisable to use a white solution so that dark areas do not show through the wallpaper.
- When gluing wallpaper, do not press too hard on the boards. The process of gluing wallpaper is no different from gluing it to other surfaces.
OSB after priming and painting Source www.holzerfarbe.com
Fire protection
Soppka paint and varnish material
In addition to making the slabs decorative, painting can also be aimed at improving the performance characteristics of OSB
When ignited, particle boards emit caustic phenolic smoke, which is dangerous to humans, so it is important to cover the material with fire-retardant solutions
Soppka paint is produced specifically to increase the resistance of particle boards to fire. The composition also prevents the development of mold in poorly ventilated areas.
The paint is much more viscous and thick than conventional antiseptics, and creates a protective transparent film on the surface of the material. The mixture is evenly absorbed into the OSB, despite the presence of resins in it, and is not washed out by rain over time.
Non-specialized but high-quality façade glaze Valtti Color Satin from the manufacturer Tikkuril is also suitable for fire bioprotection. It has high hiding power, does not fade in the sun and prevents wood from rotting.
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