Osb plate. specifications. application. OSB sheet dimensions

OSB fire safety

To determine the fire safety of a material, a classification by the degree of flammability is used in accordance with GOST 30244-94.

• Class G-1 (slightly flammable). Materials with a degree of damage in the area of ​​not more than 65% with a degree of destruction of not more than 20%. The flue gas temperature during combustion does not exceed 135 degrees. No melt drops are formed.
• Class G-2 (moderately flammable). A group of materials, the degree of damage of which during combustion is no more than 85%, the degree of destruction does not exceed 50%, and self-combustion is a maximum of 30 seconds. The flue gas temperature is up to 235 degrees. The formation of drops of material melt is unacceptable.
• Class G-3 (normally flammable). The flammability characteristics are similar to the G-2 class - with a discrepancy in self-combustion (300 seconds) and flue gas temperature (450 degrees).
• Class G-4 (highly flammable). Materials of this class have a degree of damage over the area during combustion of over 85%, the degree of destruction is over 50%, and self-combustion is more than 300 seconds. The flue gas temperature exceeds 450 degrees.

Classification by purpose

Several types of these boards are offered on the building materials market today. They differ in purpose and properties. There are four types of such plywood.

OSB-1 is the initial brand. This material has a low density structure. According to reviews, the main drawback of this product is the complete absence of at least some kind of moisture resistance. Plywood of this brand is most often used in furniture production.

OSB-2 already has higher strength and density characteristics. However, according to experts, this is still not a moisture resistant material. This board can be used almost everywhere where it will not be exposed to moisture.

OSB-3 plywood is already a real waterproof material and one of the most popular types of oriented strand board among consumers. This plywood is highly durable and resistant to moisture. It is perfect for covering prefabricated frame houses.

But there is one nuance hidden here, which manufacturers and sellers will not say - the stove is reliably protected from moisture only under the condition of a short exposure. If such a material is installed as a wall decoration in a bathroom, then a layer of additional protection must be applied to the surface. Damage can be avoided by painting the surface and applying moisture-proof impregnation. In our country, OSB-3 is very popular as a material for sub-floors - in this case, there is simply nothing better.

OSB-4 is, according to consumer reviews, a very high strength canvas. One of its characteristics is high resistance to moisture, even with prolonged exposure. There is a drawback, and it is the only one - this is how much the named OSB plywood costs. Its price is quite high - a sheet with a size of 1250 × 2500 mm, and this is a standard size, will cost from 500 rubles. The cost depends on the thickness - an 8 mm product costs from 500 rubles, 12 mm - from 680 rubles, 15 mm - from 880 rubles, 18 mm - from 980 rubles. But the price also depends on the manufacturer.

Operating characteristics of osb boards

Laminate flooring boards have the following characteristics:

• moisture resistance. The ability of a material to absorb moisture is determined by immersing a leaf fragment in liquid for 24 hours with further control of the amount of swelling. The thickness of the sheets increases in the process of moisture absorption from 10-12% for OSB-4 boards to 24-25% for OSB-1 class products;
• durability.Determination of the safety factor is carried out on laboratory equipment by applying longitudinal loads, transverse forces and bending moments. The value of the modulus of elasticity in the transverse plane is 1200-1800 N / mm3, and in the longitudinal plane - 2500-4800 N / mm3;
• stable dimensions. Dimensions are regulated by the requirements of the standard. Products are produced in lengths of 244, 366 cm with a slab width of 122 cm, as well as in lengths of 250, 370 and 600 cm with a panel width of 125 cm. The thickness of the panels increases from 6 to 22 mm, depending on the version;
• environmental friendliness. During the operation of the panels, for the manufacture of which environmentally friendly raw materials are used, no substances harmful to human health are emitted. The cladding material is safe to use inside living quarters.

The mass of the slabs increases in proportion to the change in thickness and is:

• 16.5 kg for products with a thickness of 0.8 cm;
• 20.2 kg for slabs 1 cm thick;
• 42.9 kg with a maximum sheet thickness of 22 cm.

Before choosing a material for the floor, you need to decide on what technology you want to lay the floor Among the other properties that determine the quality of the material, it should be noted:

• resistance to temperature changes;
• minimum tolerances for overall dimensions;
• the correct geometric shape with smooth edges;
• density of sheets associated with a homogeneous structure of the chip array.

Use in construction

Figure 1. A house made of OSB plywood is assembled quickly and is not expensive

Ease of installation work, moisture resistance, mechanical strength, ideally flat surface and low weight at a relatively low cost make this material very popular in construction work. It is widely used for both apartment and office renovation and private construction. Many private traders, having bought a suburban area, begin its arrangement with the construction of a temporary building with OSB, as it is quick, convenient and inexpensive (Fig. 1).

The main areas of application of OSB in construction include:

Construction of internal partitions. Depending on the operating conditions, plywood of OSB 2 class or more moisture-resistant (OSB 3) can be used. The use of a material that is more resistant to moisture will allow it to be painted with water-based substances in the future.
Installation of external partitions. In this case, it is assumed that only OSB 3 plywood is used, the surface of which must be carefully sealed and primed

At the same time, you need to know that the edges are the most vulnerable part of the plates, therefore, their processing should be treated with special attention.
Installation of floors. OSB boards can be laid directly on a concrete screed or used as a sub-surface over open ground

In the future, such a floor can be tiled, laminated, covered with linoleum or varnish.
Construction of frame houses from sandwich panels. This is a new technology that can be used to build any structures from ready-made blocks, which are used as OSB slabs. They represent a reliable structure, consisting of 2 elements, between which the insulation is pressed.
Furniture manufacture. Various elements of upholstered and cabinet furniture are made from OSB plywood. The only limitation that is imposed on such a product is the lack of direct contact with water.
Container design.
Facing of interiors of cargo vehicles: cars, ships, trains, etc.

The main characteristics of OSB boards

The popularity of OSB boards in Russia is still only gaining momentum. In the countries of Europe and especially North America, this material has long enjoyed a steadily growing demand, due to its unique properties:

• Convenient sizes
  ... OSB boards are supplied to our country, the dimensions of which are ideal for a wide variety of applications. For example, in the construction of frame houses, one standard sheet of 1.22 x 2.44 m can overlap two spans of the racks, forming between them cells 56 cm wide, which are perfect for filling with modern insulation materials.
• Ease of processing
  ... OSB products are easily sawn with all types of modern electric or hand tools, forming an even cut without chips and cracks at the cutting site. The thickness of OSB boards does not exceed the maximum depth of processing with household electric saws.
• Strength and rigidity
  ... Oriented strand boards are able to withstand heavy loads and hold well all types of fasteners (screws, nails, screws, etc.). According to this indicator, they are practically not inferior to a massive board, so that they are easy to connect with each other and with various elements of building structures.
• Absolutely flat surface
  ... No additional processing is required, the installed board can be immediately painted or finished with cladding materials.
• Attractive price
  ... OSB is one of the cheapest building materials. The cost per square meter of popular brands of slabs of the third category is about 150 rubles.
• Light weight
  ... The weight of a 9 mm OSB sheet is about 18 kg, so it is easy to transport and raise it to the required height (for example, when installing a substrate under the roof).

Panel composition

OSB sheets are made from shavings of different tree species. Fragments of certain sizes are glued together with synthetic wax, natural resins. The slab is multilayer, the layers are oriented in different directions, which increases the technical characteristics of the material.

Components for the production of panels are safe and environmentally friendly.

Comparison of OSB and plywood

Both materials are made from woodworking waste, but there is a difference between them.

What oriented slabs exist

• OSB1. A sheet with light weight, density, thickness. It is used in the furniture industry.
• OSB2. A denser sample with more layers. It is used for cladding structures inside dry rooms.
• OSB3. Suitable for rooms with high humidity from intermittent (intermittent) exposure. The thickness of the sheet is increased, the strength allows the product to be used in conditions of moderate mechanical stress.
• OSB4. Reinforced panel with a high moisture-resistant coefficient. The downside is the price.

Size range

The dimensions of the OSB are not reduced to one standard. Suppliers offer custom-made cutting, and vendors can also supply slabs of different sizes.

The main parameter that determines the types and technical properties is the sheet thickness:

2-16 mm. Thin sheets with low strength, low weight. Designed for cladding surfaces with small, non-constant loads: walls, ceilings, roof bases. Used in the production of pieces of furniture.

17–32 mm. The increased thickness provides increased bending strength of the panel, the moisture-resistant coating effect allows for cladding in damp rooms. Sheets are used to create SIP panels, finishing surfaces with high loads: walls, floors in industrial premises.

Finished products are sawn according to the dimensional grid, the slabs have smooth edges. For ease of installation, the sections are grooved.

The sizes of OSB are presented in the table.

Areas of use

Areas of use of OSB:

• Internal rough or decorative wall cladding in dry and damp rooms.
• Preparation of ceilings, steps of wooden stairs, floors for finishing.
• Manufacturing of SIP panels for the construction of frame houses.
• Base for roofing.
• Perimeter fencing of construction sites.
• Laminated panels are used to assemble reusable formwork.

In the trade and production areas:

• Creation of shelves, racks.
• Manufacturing of furniture frames.

Slabs on the floor: product features and material use

OSB slab on the floor is a popular finishing building material, for the production of which wastes from the woodworking industry are used:

• chips obtained by processing aspen trunks;
• shavings formed when sawing coniferous trees.

The composition of the boards, along with shavings, includes the following materials:

• a wax filler obtained by a synthetic reaction;
• moisture resistant resins based on phenolic and formaldehyde components.

The minimum particle size is 60 mm and the maximum is 90 mm.

OSB (oriented strand board) is a material that is successfully used in construction and in the manufacture of furniture

When making panels, chips are laid in several layers, each of which differs in the orientation of the wood fragments:

• the outer layers of the product are characterized by a longitudinal arrangement of fragments of wood shavings;
• a distinctive feature of the inner layers is the transverse placement of the chip fraction.

The production of plates is carried out under conditions of elevated temperature, as well as under high pressure. Chips impregnated with moisture-resistant resins are pressed on special equipment. The result is a slab of the required dimensions. The material surpasses chipboard and plywood sheets in terms of strength characteristics. The increased flexibility of the panels is achieved due to the mutually perpendicular orientation of the wood chips. Modern manufacturing technology, laboratory control and reliable equipment guarantee the quality of the slab to the floor.

The thickness of the material, which has an increased margin of safety, makes it possible to form a reliable basis for finishing the floor with the following coatings:

• ceramic tiles;
• parquet boards;
• carpet cloth;
• various types of linoleum;
• moisture resistant laminate.

OSB slabs for the floor are a type of finishing building material, which is characterized by a regular rectangular shape. The panels have fixed dimensions and are characterized by the absence of cracks and local defects.

OSB differs in the thickness and grade of the material, depending on the size of the raw material, the density and quality of the resins used, which affect moisture resistance

Oriented particle boards solve a set of tasks:

• form a flat surface of the floor base, mounted on wooden beams;
• compensate for high-rise differences in reinforced concrete and wooden foundations for laying fine finishing;
• create a comfortable temperature in living quarters by laying thermal insulation between the sheets and the base surface;
• prevent the penetration of street noise into the room due to the multilayer structure of the material;
• reliably isolate from the penetration of moisture entering through the capillary channels of the concrete mass.

The area of ​​use of the material differs for different types of products:

• OSB-1 boards, which are distinguished by a low price, have increased hygroscopicity and insufficiently high strength. They are intended for use as a finishing material. Sheet cladding is used in rooms with a low moisture concentration;
• OSB-2 panels have an increased safety margin and are less hygroscopic than OSB-1 panels.The products are capable of taking increased loads and are used for interior cladding of floors, walls and ceilings in dry rooms, as well as in the manufacture of furniture;
• OSB-3 products are designed for operation at high ambient humidity and have high strength characteristics. Panels marked OSB-3 are used for interior and exterior decoration;
• products marked OSB-4 have positively proven themselves in structures that take increased loads. OSB-4 boards are used when protection of the outer surface of loaded structures is required. The panels are characterized by increased moisture resistance and maximum strength.

For flooring, manufacturers produce slabs with a tongue-and-groove edge, which ensure a tighter fit of the slabs to each other. When deciding which sheets to finish the floor, you should study the performance of the slabs, and also take into account the specific operating conditions. Experts recommend using third-class products (OSB-3) to form the floor surface, which retain their integrity when exposed to forces from furniture, equipment, interior items and moving people.

Ordinary material

And now for the plywood sheets. They represent canvases of different sizes, which consist of knitted fine peeled wood veneer. Birch is usually chosen as the basis for such veneer. Again, initially plywood is completely harmless. But the veneer in the sheets cannot be unbound. And here again the already known phenol and formaldehyde resins are used.

Security groups

Advantages and disadvantages of plywood.

But, unlike OSB boards, plywood has a slightly different degree of environmental friendliness and its subtleties.

It is also important to take into account the fact that today the World Health Organization has identified 3 main groups of environmental safety of plywood, which are characterized by the letter "E". Next to this letter, a number is put from 0 to 2, depending on the degree of environmental friendliness of this type of sheets

As a rule, methanol acts as an auxiliary binder in plywood. To some extent, it enhances the same characteristics of formaldehyde. But at the same time, due to this formaldehyde, a much smaller amount is needed for binding. That is, these materials seem to compensate for the harmfulness of each other.

And yet, the degree of harm is present. Therefore, it is advisable to consider in more detail the main types of plywood based on their three levels of environmental safety according to the "E" quality standard. So let's get started.

Comparative table of performance characteristics of wood-based materials.

E0 type plywood contains less than 6 mg of formaldehyde type binder resin. The optimal permissible content of them for this category is 6. It means that 100 g of clean, dry plywood sheet contains 6 mg of harmful resins.

But the main snag is that this type of plywood has been produced quite badly recently, so you can buy it far from everywhere and not always. The explanation for this is the insufficiently high functional characteristics of the material.

The second type of plywood for environmental safety E1. Here, the content of harmful resin is, according to standards, from 7 to 9 mg per 100 g of clean dry sheet material. But such plywood is produced only by some countries of Western Europe, so there is no wide access to it either.

And finally, the third type is E2 plywood. The resin content is 10 to 20 mg per 100 g of material. Such sheets are already being produced in large quantities in almost all developed countries. But, accordingly, the harmfulness of this plywood will also be slightly higher.

Fire safety

Advantages and disadvantages of OSB.

It makes sense to consider one more important parameter - the flammability class. This will determine not only the degree of release of toxins into the room, but also fire safety.

As a rule, plywood of the G4 flammability class is by far the most widespread in production. It is a completely combustible material that releases all toxins into the air when it burns.

But if you look well, then you can also find sheets of type G2 on the market. They have a higher degree of fire safety. And when burning, accordingly, they do not emit such an amount of harmful substances. Therefore, if all factors are taken into account, then it is necessary to give preference to plywood of class G2. Indeed, at the same time, such a plan, the material will emit much less harm into the air, even when exposed to sunlight.

As a conclusion, it must be said that even despite these classes, not a single type of plywood is one that can be safely used for interior work in residential premises. The explanation for this is quite simple - an increase in the release of toxins harmful to the body by several times with even a slight increase in the ambient temperature or an increase in humidity in some cases.

And the use of G2 and E1 plywood for household purposes will simultaneously make it possible to minimize the release of toxins into the air. At the same time, there is a possibility that you will not feel this harm indoors, therefore, the harm to health will be less.

So, the main environmental characteristics of plywood and OSB boards are considered. Bottom line - neither one nor the other is recommended for residential premises. But if such a need arises - plywood or OSB - then it is better to choose ordinary non-moisture-resistant plywood, since it is more environmentally friendly.

Scope of application

Plates YUSBI for wall decoration

• give preference to products of American or European production, because they are presented on the market with a higher quality than domestic brands (Canadian production is considered the most excellent);
• you can use yusb sheets both on a wooden canvas and on a concrete screed, only the massiveness of the material will serve as a distinctive feature;
• this material is very popular specifically for flooring, because it allows you to make the coating more durable, increase its service life and provide reliable protection against moisture;
• such pressed wood allows you to save a lot on the purchase of material, because it will not be difficult to cut the sheets necessary in size and shape (they are perfectly amenable to cutting with a circular saw without violating the integrity and deformation).

The most demanded and popular area of ​​using sheets is the concrete floor screed. Concrete floors differ in height differences and the presence of many defects, and usb sheets will help to achieve a perfectly flat surface for the subsequent laying of absolutely any floor covering, both parquet or laminate, and linoleum.

Due to its dense texture and layering, the coating allows you to achieve maximum sound insulation in the room, and the naturalness of the material helps in keeping warm.

If you need to increase the level of resistance of the floor to deformation, pressed wood sheets can be laid in 2 tiers, fastening the edges with a special adhesive solution and leaving small gaps between the sheets for their future expansion after absorbing excess moisture.

Plates YUSBI for wall decoration in the house

Very often in buildings where the foundation has been poured, the floor covering is installed on multi-layer beams or wood logs. In such a situation, yusb material can be used both in final and in draft form.

Due to the unique features, it is possible to use yusb sheets not only in the form of a self-sufficient floor covering, but also for the preparatory work of the base for various materials.

Sheets can be mounted under the laminate, observing the only requirement - the surface at the junction must be perfectly flat.
The material is used as a base for linoleum or carpet (in order to achieve maximum evenness of the floor, you will need to use the thinnest sheets possible, having previously treated them with hermetic solutions).
As a final finish, but there is a certain rule here: the material will have to be additionally protected from wear

This protection can be achieved by applying varnish in several tiers, pretreating and deburring the pressed sheet.
You can also lay tiles on yusbi sheets, but note that for such work, you will need to fix the base with high quality so that it is motionless.