How smallpox is made. What are OSB sheets? Features and varieties of material

Oriented strand board (OSB, OSB, OSB - short for the English expression oriented strand board) is a modern construction and finishing material that used for various jobs.

OSB was conceived as inexpensive alternative plywood and, because the ability to use non-commercial wood for the manufacture of shavings reduces the cost of finished products.

what is OSB;
what types of oriented strand board are;
what regulatory documents regulate the quality and characteristics of OSB boards;
what sizes are OSB chips, and whether their price depends on this;
how much this material costs;
advantages and disadvantages in comparison with other construction and finishing materials;
what the OSB is used for.

As part of OSB - multiple layers thin (0.5-1.5 mm) of various shapes and sizes, oriented within each layer. Sizes of wood chips for OSB are 1–20 cm in length and 1–50 mm in width. You can read more about how shavings are made.

Clear orientation in the longitudinal or transverse direction No however, most of all coarse wood chips are oriented in the correct direction with a tolerance of up to 60 degrees (in most cases, the rotation relative to orientation does not exceed 30 degrees).

Due to the fact that most of the large chips are oriented in one direction, the layer acquires an increased transverse or longitudinal rigidity and strength.

All layers are interconnected using a mixture of various natural and synthetic adhesives, with each manufacturer using their own recipe and keeping it secret.

As a result all layers united in a single carpet, jointly respond to any bending or twisting an effort, which provides high rigidity and strength in comparison with chipboard.

At the same time, the oriented strand board is inferior in these parameters to plywood, because in plywood each layer consists of a whole sheet, therefore its strength and rigidity are much higher. All sheets correspond to the size accepted at the enterprise.

Regulations

In RF characteristics of OSB regulated by GOST 32567-2013, which you can familiarize yourself with here at this link.

This document is based on the international standard EN 300: 2006 "Oriented Strand Boards (OSB) - Definitions, classification and specifications". Therefore, plates that comply with GOST will also comply with the international standard.

The document applies only to the characteristics of the finished product, allowing the manufacturer to independently choose the most suitable technology. We talked about general technological aspects in the article.

Types of oriented strand sheets

GOST 32567-2013 and international standard EN 300: 2006 divide oriented strand board (OSB are shown in the photo) into strength classes:

OSB-1 (OSB-1).
OSB-2 (OSB-2).
OSB-3 (OSB-3).
OSB-4 (OSB-4).

In addition, all kinds of slabs divide on appearance of the front side:

unpolished;
polished,

and on the release of formaldehyde into the air (emission):

E0.5.

Strength and water resistance classes and application features

The OSB-1 class includes a material that is unsuitable for creating load-bearing structures and has a minimum moisture resistance. It is used for decoration inside dry rooms, cladding of various panels. In addition, it applies for the manufacture of furniture.

In terms of rigidity, OSB-1 is inferior to GKL and DSP, therefore it is necessary to reduce the distance between the details of the crate, otherwise the sheathing will be pressed through.

The OSB-2 class includes more rigid and durable slabs, which can act as load-bearing elements.

For example, due to the low price, OSB-2 of different thickness is often used for laying on a sub-floor.

However, they too not suitable for use in high humidity conditions, therefore, they are not used for external cladding of buildings or SIP panels.

The OSB-3 class includes slabs that differ in their technical characteristics - durable and moisture-resistant elements that have found application as structural... OSB-3 of different sizes is often used as a subfloor, because they successfully replace a floorboard, and the price for them is noticeably lower.

In terms of strength, OSB-2 and OSB-3 particle boards are comparable, therefore the main difference is the minimum ability to absorb moisture, due to which the expansion due to swelling is also minimal.

Moisture-resistant oriented strand boards of the OSB-4 class of all sizes are distinguished by the highest price, maximum rigidity and strength, therefore they are used only as structural, and in the areas with maximum load.

In addition, OSB-4 has a minimal ability to absorb water, thanks to such characteristics, they have the most positive reviews and are used in the production of SIP panels, as well as as an external cladding of frame houses.

Type of face and ends

The first experience of using oriented strand boards of different sizes - moisture-resistant OSB for outdoor use and ordinary for interior decoration, has shown their high efficiency and significant superiority over other materials in terms of price / quality ratio.

As a result, there is a demand for higher quality products, with a flat and relatively smooth surface.

This is how the first polished plates. Sanding retains the unique surface pattern, but removes any large irregularities. In addition, the tolerance for the thickness deviation for sanded products is much lower and amounts to 0.3 mm, while for non-sanded products, a deviation of 0.8 mm is permissible.

Most slabs have flat ends, but OSB, designed to create continuous flooring, locks are cut at the ends that allow you to stack sheets without gaps.

Such oriented strand boards are called tongue-and-groove... You can read more about grooved slabs.

Manufacturers also offer grinded slabs, varnished or laminated.

The front side of the first is impregnated with a waterproof and wear-resistant varnish, while the second has a thin wear-resistant film on the front side. Typically, such coatings are applied to material intended for finishing flooring and outdoor waterproof finishes.

3 classes of formaldehyde emission and environmental friendliness

To reduce costs and increase the strength of OSB, manufacturers forced to use adhesives containing formaldehyde... After hardening and polymerization, such adhesives have a fairly high water resistance and good strength.

The use of adhesives that do not contain formaldehyde either does not provide the required strength or greatly increases the cost of the finished product, depriving it of its main advantage - its low price compared to plywood.

Therefore, it was necessary to divide the OSB into formaldehyde emission classes. Minimum class E0.5 allows content up to 4 mg / 100 grams of OSB. Wherein the content of the poisonous drug in the air for any time should not exceed 0.08 mg / m 3.

For class E1 the formaldehyde content should not exceed 8 mg / 100 grams, and the maximum allowable the content in the air is 0.124 mg / m 3.

For class E2 the formaldehyde content in 100 grams of OSB should not exceed 30 mg, and the emission should not exceed 1.25 mg / m 3.

At the same time, the average daily concentration of formaldehyde in residential premises should not exceed 0.01 mg / m3, as stated in Appendix 2 of SanPiN 2.1.2.1002-00 “Sanitary and Epidemiological Requirements for Residential Buildings and Premises”.

You can read this document by following the link. Even the conditionally safe class E0.5 emits an amount of this toxic substance that exceeds the standards, therefore OSB can not use for interior decoration living quarters without ventilation, since it can still cause sufficient harm to the human body without observing these safety measures.

Dimensions and weight

A single standard, that is, standard OSB sizes does not exist, but most manufacturers adhere to the following length and width parameters in mm:

1250x2500;
1200x2400;
590x2440.

There are other sizes OSB-1, OSB-2, OSB-3 and OSB-4. If, instead of purchasing finished products, you prefer a custom-made product, then you can make any size, up to a length of 7 meters.

The sheet thickness ranges from 6 mm to 25 mm in increments of 2 or 3 mm. but most popular slabs with a thickness of 8–16 mm are considered. Also quite often in the Russian market there are OSBs with a thickness of 9 mm, 10 mm, 12 mm and 15 mm, their cost usually increases according to an increase in their parameters.

The mass of the sheet depends on its thickness and dimensions, because the average density of any type of slab is the same and amounts to 600-700 kg / m 3. Therefore, the weight of OSB with dimensions of 1220x2440 mm is 12.5 kg with a thickness of 6 mm, with a thickness of 9 mm and 12 mm it will be, respectively, more, and with a thickness of 22 mm, it will be 42.5 kg.

Marking

The general principle of marking OSB issued in Russia and abroad is the same. One of the sides is pointed:

grade;
dimensions (length, width, thickness);
formaldehyde emission class;
type of front surface;
manufacturer's name.

If you purchase an OSB, for sale in America and Europe then you need to be aware of the labeling differences. The grade may not be indicated in the way it is accepted in EN 300: 2006, but in accordance with CSA O325, that is:

W - oriented strand board for interior wall cladding in dry rooms;
1F - rough flooring;
2F - OSB for finishing flooring;
1R - material for roof lathing without creating support at the edges;
2R - The same, but with support at the edges.

In addition, a two-digit number is indicated after the letter, which means the maximum allowable distance between the supports in inches, for example, 1F18.

If OSB is suitable for various applications, then list all tolerances, for example, 1F18 / 2R20. Moisture resistance with such marking is also indicate separately:

Interior- an analogue of OSP-1, with its technical characteristics, is suitable for use only in dry rooms.
Esposure Type Binder- plate with medium moisture resistance. It can be used in rooms with a slightly increased level of humidity, and after treatment with protective agents, it can also be used for outdoor decoration.
Exterior Bond- material with maximum moisture resistance, suitable for any application, even without additional treatment with hydrophobic agents.

Besides, may meet and other inscriptions:

SHEATHING SPAN- the distance between the axes of the lag in inches, if the numbers are indicated through a fraction, then the first value refers to the lags of the roof, the second to the lags of the interfloor overlap. If, instead of the second value, the number 0 is indicated, then the oriented strand board is only suitable for use on the roof and cannot be laid on interfloor floors.
THIS SIDE DOWN- bottom side mark. On the outside of the OSB with such an inscription, small grooves are made for water drainage, therefore, improper installation will lead to the fact that during rain water will be drained ineffectively, and the board will begin to swell.
STRENGTH AXIS THIS DIRECTION- this inscription is always accompanied by an arrow that points to the direction perpendicular to the lags. In other words, OSB with such an inscription must be laid so that the arrow is rotated 90 degrees relative to the log.

The marking of laminated and varnished boards is not spelled out in generally accepted documents, therefore each manufacturer designates this type of material in its own way.

The same applies to wood-based panels with end locks.

Price

Slabs price depends on:

strength classes, water resistance and formaldehyde emission;
sizes (length, width, thickness);
grinding, varnishing, laminating or locks at the ends;
manufacturer.

Brand	Dimensions (thickness, width, length in mm)	Manufacturer	Cost, rubles per sheet
OSB-1 Е1 Unsanded	6x1250x2500	Egger (Romania)	500
OSB-1 Е1 Unsanded	12x1250x2500	Egger (Romania)	650
OSB-2 Е1 Unsanded	9x2440x1220	Kalevala (Russia)	530
OSB-3 E1 Lacquered	18x1250x2500	Glunz (Germany)	2150
OSB-3 Е1 Grooved Unpolished	12x1250x2500	Bolderaja (Latvia)	900
OSB-3 Laminated E1	18x1220x2440	Baumak (Russia)	1500
OSB-3 E1 Sanded	12x1220x2440	Kalevala (Russia)	700
OSB-3 Е1 Unsanded	22x1220x2440	Kronspan (Russia)	1350
OSB-3 Е1 Unsanded	12x1250x2500	Egger (Austria)	1180
OSB-3 Е1 Unsanded	22x1220x2440	Egger (Germany)	1350
OSB-4 Е1 Unsanded	12x1250x2500	Kronspan (Belarus)	820

The most popular strength class is OSB-3 and emission class E1 - it is quite difficult to find OSB particle boards of other emission classes, therefore most often they are made to order, so the price is discussed individually.

It is also worth noting that with the same length and width parameters, but with different OSB thicknesses - for example, 9mm, 12mm, 15 or 18mm, the price for them will also differ.

Specifications and comparison with other finishing materials

Here main competitors oriented strand boards:

plywood (No. 1);
Particleboard (No. 2) (link to Particleboard);
Fiberboard (no. 3);
GKL (No. 4);
glass magnesite sheet (No. 5);
smooth slate (no. 6);
DSP (No. 7).

In brackets are the numbers assigned to them, in the order in which we included them in the table where you can compare main parameters and technical characteristics, that is:

density;
the possibility of using it as a structural element, that is, subfloor flooring, roofing, etc .;
thermal conductivity;
vapor permeability;
flammability (ability to sustain combustion);
toxicity under normal conditions / fire.

Options	Materials (edit)
Options	OSB	1	2	3	4	5	6	7
Density kg / m 3	500–600	500–900	600–700	500–700	500–900	800–1300	900–1500	350–1500
Can be used as a structural element, i.e. sub-flooring, roofing, etc.	Yes	Yes	Yes	No	No	Yes	No	Yes for slabs with a density over 1100 kg / m 3
Thermal conductivity	0,14	0,14	0,15	0,16	0,15	0,21	0,28	0,07
Vapor permeability	0,004	0,02	0,08	0,1	0,1	0,2	0,1	0,4
Flammability high, medium, low (V, C, H)	V	V	V	V	WITH	N	N	N
Toxicity under normal conditions / in case of fire, high, medium, low (V, C, H)	I / O	I / O	C / B	NS	N / N	N / N	B / H	N / N

Density finishing material affects the weight of the sheet and can make it difficult to climb to upper floors and install. Therefore, the low density of OSB is a serious advantage, which is further enhanced if we take into account the possibility of using oriented strand board as a structural material.

At low OSB density has high strength, so you can do from it:

rough and final floors in residential premises;
roof decks;
steps on stairs;
removable formwork;
SIP panels;
various fences.

Thermal conductivity OSB is comparable to plywood and surpasses most finishing materials, second only to DSP and fiberboard. However, in such an important parameter as vapor permeability, it is inferior to most competitors.

Because of this, in houses sheathed with OSB, special measures must be taken to remove moisture and protect against condensation. For more information about the effect of vapor permeability on humidity in the house and the condition of the walls, see the article (Application of OSB).

Oriented strand board belong to the class of combustible fire hazardous materials.

Manufacturers are trying to reduce the level of flammability using pyrophobic drugs, but even such boards are superior in this parameter to plywood and wood.

In addition, the high strength finished slabs manage to get only using formaldehyde based adhesives, which is a strong poison, and therefore OSBs are not environmentally friendly.

Therefore, the sheathing of the internal space with OSB sheets, although it is inexpensive, leads to an excess of the maximum permissible concentration of this substance, which negatively affects well-being and health.

Nevertheless, all the significant disadvantages of this material can be neutralized by correct application. Indeed, even in E2 class plates, the rate of formaldehyde release is so low that any ventilation or periodically opened window can easily cope with it.

But you still need to know - during a fire, OSP emits not only carbon monoxide and carbon dioxide, but also many toxic substances posing a threat, causing harm to health.

Installing fire safety systems, including smoke detectors, will come in handy in any home. Indeed, during a fire, the main danger is not poisonous substances, but smoke, which makes it difficult to leave the room.

In addition, many pieces of furniture and household appliances emit large amounts of toxic substances during a fire. That's why with a small fire OSB sheathing does not pose a threat if the fire safety systems work properly and extinguish the fire. If the systems do not work and the fire gains strength, then there will be enough smoke and toxic substances in houses without such sheathing.

Output

OSB boards are a good and modern construction and finishing material that has both advantages and disadvantages. However, all the disadvantages are compensated for by the correct use of the boards, and the advantages make OSB more attractive than other materials.

After reading the article, you learned:

what is OSB, and how to decipher this abbreviation;
about the characteristics and properties of OSB boards;
what is the difference, for example, between OSB-2 and OSB-3 and other types of oriented strand board;
about the price of chipboard OSB;
about the features of their application and other parameters.

In contact with

What are OSB sheets and what are they made of? OSB or OSB sheet is an oriented strand board, which is a chipboard material glued with a special polymer. Many people mistakenly assume that chipboard and OSB are about the same thing. However, OSB sheets are made only of high-quality shavings, which are placed in a special perpendicular manner to each other. The sheet itself is formed using synthetic resins, under high temperature and pressure. Due to its robust structure, the material is very durable.

OSB board characteristics

General technical characteristics of chip sheets are as follows:
- The density of the slabs can vary from 640 to 700 kg / m3;
- increased fire hazard of the material - G4, usually it is treated with fire retardant solutions;
- adhesion and coloring of sheets is good, they are often covered with various varnishes;
- the manufacturability of the material is practical, it can be sawed, drilled, nailed, grinded and cut; fairly simple installation;
- the holding mechanical capacity does not have an exact number, but is considered high;
- swelling coefficient - 10-22%.

Where are OSB sheets used?

OSB sheets are widely used in the following areas:
- as a material for shelving and stands;
- wood sheathing of stairs;
- wall cladding of houses from the frame;
- in the form of SIP panels;
- as a base for roof tiles;
- in panel board formwork structures;
- for filing ceilings;
- as a basis for installing floors.

Building a house from OSB sheets using frame technology.

OSB sheets are widely used in the construction of houses using frame technology. One of them can be found in the article:.

OSB board classes

There are several classifications of OSB sheets. First, consider the class, denoted by numbering from one to four. So let's figure out what the numbers mean after the name of the material itself.
1. OSB-1 is the lowest strength and lowest water resistance material. It is used in rooms and structures without heavy loads (in the form of cladding and furniture elements).
2. OSB-2 is used for the construction of load-bearing structures for dry rooms, respectively, the level of strength is medium, moisture resistance is low.
3. OSB-3 - a material that has a higher strength and is allowed to be used in high humidity conditions.
4. OSB-4 is a durable sheet that is calculated for the maximum moisture level combined with mechanical stress.

OSB-3 slabs are most widely used due to their strength characteristics. If such sheets are primed or painted, then their moisture resistance characteristics are comparable to OSB-4 plates. OSB-4 slabs are not widely used due to their high cost, it is about twice as high as that of OSB-3 slabs.

Health hazard OSB boards

Each chipboard has in its composition another not very useful, or rather completely harmful component. It is the glue that connects the entire OSB structure into a single whole - formaldehyde. However, in a bound state, it is absolutely safe, but there is one moment that destroys this myth. During the manufacture of the plate, it is compressed, therefore the structure of the glue collapses and during the operation of the sheet, a certain level of toxins is released into the room. The toxicity class is designated as follows:
- E0.5 - formaldehyde emission not more than 0.08 mg / m³ of air;
- Е1 - formaldehyde emission from 0.08 to 0.124 mg / m³ of air;
- E2 - formaldehyde emission from 0.124 to 1.25 mg / m³ of air.

For indoor installation of OSB boards, it is better to use boards with toxicity class E0.5 and E1. Such boards are also harmless to health like other building materials.

Dimensions and thickness of OSB sheets

The possible dimensions of the OSB board directly depend on the edges of the building material itself. They can be (the possible sizes are indicated below):
A. With smooth edges. In this case, the dimensions of the sheet are:
- 2440x1220 mm;
- 2500x1250 mm;
- 2800x1250 mm;
- 3125x2000 mm.
B. With grooved edge. This class includes sizes in:
- 2440x1220 mm;
- 2440x590 mm;
- 2450x590 mm;
- 2500x1250 mm.
The thickness of each OSB sheet can range from six to twenty two millimeters. Here are some typical thicknesses: 6, 8, 9, 10, 12, 15, 18, 22 mm

On the edges of OSB sheets, there may be special grooves for better connection with each other.

Prices for OSB sheets.

Almost all residents of large and not so cities are well aware that in our time it is relatively easy to buy a fake certificate proving the clean environmental friendliness and safety of products. Therefore, in order not to be trapped, it is better to trust only the most famous and popular OSB manufacturers. These include:
- Kronospan-Bolderaj, OSB-3, for example, a plate with a size of 2500 * 1250 mm and a thickness of 9 mm will cost about 650 rubles;
- Glunz and Egger - German plates of the same size and thickness are slightly more expensive - for 850 rubles;
- Kalevala OSB-3 is a Russian stove, which can be purchased for 550 rubles.

OSB stands for Oriented Strand Board - a board made of oriented strands, or OSB in Russian. It is a modern building and finishing material, consisting of 90% wood chips bound with synthetic waterproof resins. The boards are formed by 3-4 layers of thin chips up to 15 cm long, pressed at high pressure and temperature, and the direction of the chips in each layer is different.

OSB boards can be used for:

production of sandwich panels and construction of frame houses,
when arranging floors,
wall cladding, ceilings, floors,
for covering roofs,
during auxiliary work (installation of formwork, scaffolding),
for the manufacture of auxiliary buildings (sheds, storage facilities), street structures, fences,
as structural elements of furniture.

High-quality OSBs comply with the EN 300 OSB standard, which sets requirements for environmental safety and technical parameters of boards.

Types of slabs and their features

There are 4 main types of slabs produced:

OSB-1- low strength and low moisture resistance, used for interior work, in the manufacture of furniture,
OSB-2- high strength and low moisture resistance, used for internal partitions, load-bearing structures, floors,
OSB-3- high strength and high moisture resistance, ideal for outdoor use,
OSB-4- ultra-high strength and high moisture resistance, used for load-bearing elements, walls, roofs.

The moisture resistance of the board depends on the composition of the glue used, and the strength depends on the number of layers and the mutual arrangement of the chips in them.

In addition, there are slabs with a varnished or laminated surface on one side, which, for example, can be reused for the manufacture of formwork. For laying on a horizontal surface, you can use OSB with tongue-and-groove joints at the ends on 2 or 4 sides.

The following standard board sizes are most common:

122 * 244 cm,
122 * 366 cm,
125 * 250 cm * 6 -40 mm,
125 * 370 cm,
125 * 600 cm.

Pros of OSB

Manufacturers sometimes call OSB - "improved" wood. It is just as strong, lightweight and easy to handle, but at the same time it is devoid of such drawbacks as fire hazard, susceptibility to rotting and mold, the presence of voids and knots. In terms of technical properties, OSB surpasses chipboard, fiberboard, MDF and even plywood.

Factory conveyor production allows for consistent dimensions and uniform thickness throughout the slab. OSB provides excellent heat retention, it is not subject to deformation and degradation in water. For its processing, the same tools and materials are used as for wood. Large sheet sizes allow walls to be erected with a minimum number of joints. The service life of structures made of such plates is practically unlimited.

Cons of OSB

Recently, there have been a lot of materials about the harm and negative impact on health of OSB. All criticism is related to the use of phenol in the composition of synthetic resins, which are used to bind wood chips and release carcinogenic substances. Today, most European manufacturers have switched to polymer resins without the inclusion of formaldehyde and are completely safe, such plates are usually marked ECO-, Green-.

In any case, before purchasing OSB for building a house, it is worthwhile to familiarize yourself with the certificates for this material and make sure that it complies with the E1 class, or even better - E0 (the emission class determines how much formaldehyde compounds are released into the environment).

For interior work and the manufacture of furniture, it is permissible to use only OSB intended for interior work, and if there are doubts about its quality, it is good to insulate with plasterboard, finishing materials and floor coverings and take care of ventilation in the room. OSB-3 and -4 can only be used for outdoor work.

Recycling of waste from the woodworking industry is not new for a long time. They are used to make plywood, chipboard, fiberboard, glued beams, which are actively used in the furniture industry. OSB particle boards have gained recognition relatively recently, and now we will describe the characteristics of this product, its varieties, as well as the areas in which it is used.

OSB boards: types and methods of application

Currently, there are four types of oriented strand board "OSB". These include OSB1, OSB2, 3 and 4. They all have different technical characteristics, from which follows a variety of areas of their application.

OSB1 are slabs that are characterized by a low material density. As a result, they cannot withstand contact with moisture without being seriously damaged. They are mainly used in the furniture industry.

OSB2 - have greater strength and density in comparison with the first type. The common couple of the first two types is moisture intolerance. Due to the increased density of these slabs, they are used for cladding structures in rooms with medium humidity values.

OSB3 - has become the most widespread today. It is characterized by high strength and resistance to use in an environment with high humidity. True, with prolonged contact with water, it still begins to deform. To use this material outside the room, it must be pre-treated with paint or an appropriate impregnation.

OSB4 - already a level higher than the previous ones. It is extremely durable and does not suffer damage from water even after prolonged use in a high humidity environment. This material has only one drawback - its price. It is about twice the price of OSB3.

OSB (OSB) plate - characteristics, size and weight

Another criterion for separating oriented strand board is their thickness. This is one of the most important characteristics of OSB boards. After all, this is also not an insignificant factor when choosing materials in certain areas. The length and width (2500x1250 mm) remain standard in OSB sheets (OSB), but the thickness ranges from 8 to 26 mm, in 2 mm increments.

Slab sizes

For cladding structures in which a high load on the slab is not foreseen, for example, thin sheets with a thickness of up to 16 mm are used. With their help, walls are made, a base for a soft roof is created, walls and already existing wooden floors are sheathed with them. In cases where a load is provided, measured in hundreds of kilograms per square meter, thicker plates are used. Basically, this is, if necessary, to create a basis for the installation of heavy equipment, as well as flooring and for roof structures.

Strength and moisture resistance table

Technical characteristics of OSB boards (OSB)

Modern OSB slabs can boast of fairly high rates. This is what made them such a widespread material in construction.
Here is a list of the main properties of oriented strand board:

Relatively high strength. They can withstand a weight of several centners, the main thing is to choose the required thickness;
Lightness and elasticity. Thanks to these two characteristics, OSB can be used for cladding various curved surfaces that have a significant radius of curvature;
Structural homogeneity is a property that ensures the preservation of the integrity of the slab during bending. This gives OSB an advantage over plywood, which will delaminate in such cases;
The advantage of OSB over wood is that it is devoid of form instability in case of excessive moisture, and the risks of defects on OSB, in comparison with wood, are much less;
Oriented strand board is very easy to work with tools such as drill, saw. This greatly facilitates the work when connecting sheets to each other;
Compared to other materials, OSB has very high heat and sound insulation performance;
Resistance to chemical and mechanical stress is another plus of this material;
Special impregnation prevents the formation of mold and mildew on the boards.

Physical and mechanical properties table

Indicators	Mill- dart	Aggloply OSB 2	Aggloply OSB 3	OSB 2			OSB 3
Thickness, mm		10-18	10-18	6-10	10-18	18-25	6-10
Thickness tolerance, mm: unpolished slab polished plate	EN 324-1	0,3 0,3	0,3 0,3	± 0.8 ± 0.3			± 0.8 ± 0.3
Length tolerance, mm	EN 324-1	3	3	3			3
Width tolerance, mm	EN 324-1	3	3	3			3
Squareness, mm	EN 324-2	1,5	1,5	1,5			1,5
Straightness, mm / 1 m	EN 324-1	2	2	2			2
Elastic modulus, N / mm²: longitudinal axis transverse axis	EN 310	>6000 >2500	>6000 >2500	3500 1400			3500 1400
Flexural strength, N / mm²: longitudinal axis transverse axis	EN 310	>35 >17	>35 >17	22 11	20 10	18 9	22 11
Transverse tension, N / mm²	EN 310	>0,75	>0,75	0,34	0,32	0,3	0,34
Formaldehyde, mg / 100g	EN 120	<6,5	<6,5	<8			<8
Swelling in 24 hours with full immersion in water,%	EN 317	12	6	20			15

Working with OSB (OSB) boards and their application

OSB boards can be used in many areas of construction due to their technical characteristics. Primarily, this building material is used to arrange the walls of frame buildings and to create partitions between rooms. Also, with the help of oriented strand boards, they carry out the installation of flooring and level the floors that were installed earlier. In addition, OSB acts as an excellent base for certain types of roofing materials.

OSB, regardless of their area of application, have an almost identical method of fastening. They are simply fixed with self-tapping screws on a metal or wooden frame.
In the case when you need to install the floor covering using OSB, the plates are attached to the joists, which must be pre-installed. A wooden lathing can serve as a supporting structure in the manufacture of a roof. For wall cladding with OSB plates, special metal profiles must first be installed on the wall, and the plates themselves are already mounted on them. To guarantee the inviolability of the structure, the step when installing profiles, lags or lathing should not exceed 400 millimeters.

As mentioned above in this article, OSB boards are very easy to process as you wish. Their processing is possible even with an ordinary hacksaw, but this will take a lot of time and effort from you, so we advise you to use an electric jigsaw. It should be equipped with a large-toothed wood saw to speed up the cutting process as much as possible.

Well, it is obvious that OSB boards are simply irreplaceable for builders. With their help, you can build a full-fledged frame house, including internal work - installation of the floor and walls. Such dwellings are built as quickly as possible and have a very long operational life.