Safety of production of OSB (OSB) boards. OSB Superfinish ECO - dimensions

OSB (OSB in transliteration) or OSB sheets are in demand in rough repair and construction work. To obtain a non-trivial result, they are occasionally used in finishing, finishing. What is stopping people? First of all, the rumors that the plates OSB harm us for health. Let's try to figure out how dangerous they are for humans.

Brief description of OSB

Oriented strand board is a building and finishing material, 86-90% consisting of large wood chips up to 25 cm long and no more than 4 mm thick chips. The rest of the total mass is thermosetting synthetic resins, special additives and additives.

Manufacturers offer 4 types of plates for different purposes:

• OSB-1 - thin sheets intended for packaging, furniture blanks, temporary structures, etc.
• OSB-2 - used in rooms with normal humidity(no more than 60%). Applications: internal rough work, including leveling floors, walls, ceilings and primary cladding (utility boxes, roof sheathing in conditions warm attics, SIP panels, etc.).
• OSB-3 - moisture-resistant boards that can be used both outside and inside (in the bathroom, kitchen, sauna, laundry, etc.). Can be used as a leveling layer outdoor decoration under plaster, thermal panels, facing clinker boards or bricks, siding and other types of hinged facades
• OSB-4 - hardened high-density boards used to form load-bearing structures.

The basic physical and technical characteristics of OSB are given in the table below:

In the pluses, we also write down the low coefficient of change in geometric dimensions with temperature and humidity changes. Thanks to this characteristic, the material can be mounted with minimal gaps around the perimeter of the room.

Now consider the cons of OSB:

• High percentage of board swelling in direct contact with water. This figure for sheets of some manufacturers reaches 25%;
• Difficulties with laying communications and replacing insulation under mounted OSB sheets;
• Combustible, respectively flammable material. The risk of fire is slightly reduced when treated with flame retardants (Rogneda, Novbytkhim);
• Subject to biodegradation. Mold, fungi, rodents and bugs are a danger to plates;
• High price. OSB from well-known manufacturers(Egger, Glunz) costs 30-60% more than drywall or chipboard in similar dimensions.

The cons of the material are not limited to this list. According to marketing research, potential buyers consider the harm of these plates to human health as the biggest drawback. The main criterion here is the concept of "environmental friendliness". Let's consider in more detail.

OSB sheets - harm or benefit?

An environmentally friendly product is a product that, according to research, does not harm environment and users. With regard to OSB, formaldehyde, phenol and methanol fumes can bring the greatest harm to people. Where do they come from?

The thing is that such synthetic resins as phenol-formaldehyde, urea-formaldehyde, melamine-formaldehyde and many others are used as a binder.

The advantages of polymer binders allow the production of inexpensive products high strength. But the disadvantages of their use are so significant that they repel potential buyers. This is, first of all, their toxicity both before and after solidification.

Such poisonous combustible gases as formaldehyde, phenol, benzene, methanol and others are emitted. They are allergenic, mutagenic and carcinogenic substances, provoke skin diseases as well as diseases internal organs including reproductive, respiratory and cardiovascular system, eyes.

Although many GOSTs and SNiPs have been canceled or seriously revised towards mitigation, some construction and Decoration Materials still have to undergo a sanitary and hygienic examination. Based on the results, a certificate or conclusion is issued for each batch. The document indicates the methodology for conducting tests, limiting standards (MPC) and the results obtained. They can be used to judge how harmful this or that product is.

In the Russian Federation, today it is customary to label OSB and its analogues according to the European standard DIN EN120, which determines the emission class of formaldehyde and some other toxic substances:

• E3 - up to 30 mg per 100 g of dry matter;
• E2 - 10-20 mg;
• E1 - up to 10 mg;
• E0 - up to 6.5 mg.

For example, let's give the MPC for formaldehyde in atmospheric air- 0.003 mg / m 3, and in household water - no more than 0.05 mg / l.

In accordance with this classification, OSBs of the E0-E1 class are produced by such giants as Glunz (Germany), Norbord (Canada),Egger(Austria). The harm is minimal, and the advantages are obvious, therefore they are recommended for use inside residential premises with subsequent cladding (including children's rooms, hospitals).

Products marked E2-E3 (Kronospan, Kronopol) can only be used for outdoor work, including under-roofing non-residential attics, bearing structures in makeshift houses, etc.

Serious manufacturers, as a rule, are willing to provide their products for additional voluntary checks. Yes, Austrian Egger company periodically receives the Blue Angel certificate, confirming the environmental friendliness of its products.

Unfortunately, a rare Russian plant can boast that its products have been tested for harmfulness and meet the high standards of the DIN EN120 standard. The OSB of many manufacturers does not stand up to scrutiny. Federal government agency health care "Center for Hygiene and Epidemiology" some time ago published data from an independent examination OSB boards(manufactured in the Russian Federation): the content of formaldehyde in the ambient air at +20 ° C is 0.067 mg / m 3, that is, 22 times higher than the MPC.

If you are going to buy OSB, you can determine the harm of products:

1. Pay attention to the smell of the sheets. Toxic fumes give a characteristic sharp "flavor" of formalin or cheap plastic.
2. Ask the seller for copies of certificates certified by the blue seal of the supplier or directly from the manufacturer.
3. Inspect the packaging if possible. Large factories mark it and additionally complete it with inserts with basic information.

Do not save on your health - to minimize harm, choose products labeled E0-E1 from trusted manufacturers.

Plate material - moisture resistant plate OSB 3 is widely used in private construction. There were two reasons for this. First, this material is relatively cheap. High-quality plywood or thin DSP will cost more.

Secondly, oriented strand board holds any fastener very well. The structure of this board material allows you to attach structures to it not only with self-tapping screws, but also with nails.

Thirdly, this material is relatively light. Any person can handle the installation of OSB structures, it is possible to mount the plates alone.

What can not be said, for example, about cement-bonded particle board. Already with a thickness of 16 mm DSP standard size it is difficult to move, not to keep it straight when making its fasteners.

However, for all positive aspects of this material, there are opponents of its use in private construction. These people believe that the scope of OSB is industrial light construction, and this board material can only be used where human presence is minimized.

Let's see what oriented strand boards did not please, and for what reason.

Firstly, in the production of OSB, formaldehyde-based glue is used. This adhesive is used as a binder and provides a strong bond between the wood layers in the board.

Secondly, at present, the production of oriented strand board can be organized by almost any entrepreneur - the production process requires a minimum of equipment. This means that slabs of unknown origin appear on the market with possible problems ecological plan.

Thirdly, such plates cannot be used everywhere.

Using OSB 3 outside the house

Moisture resistant board OSB 3 can be used both inside and outside the house. The most common area of ​​application this material became frame construction. Due to its rigidity, which is provided by layers with multidirectional chips and small chips, OSB makes durable frame Houses.

This plate material allows you to abandon the use of jibs in the frame.

If we take into account that, the frame from the inside is sewn up with a vapor barrier during the production of insulation, then all harmful substances that could penetrate interior spaces, are cut off.

Thus, even if there is formaldehyde emission from the OSB, all harmful substances will be cut off by the vapor barrier and will not penetrate into the living quarters.

Using OSB 3 inside the house

Should I use OSB 3 inside the house? The answer to this question depends on how much you are aware of the source of the building material on the market. If you know that this board material is produced in a certified production facility and has a Russian safety certificate, you can use it indoors.

However, it is best not to use it, but leave it for technical rooms.

What do GOSTs and SanPiN say?

So, what do GOSTs and SanPiN tell us? If the production of OSB 3 was organized in compliance with all established norms and rules, if on the line itself, as well as at the exit from the workshop, a strict control of the product for compliance with the requirements is carried out, then there are no prerequisites for alarm.

However, it is worth limiting the use of this board material in residential areas, and use it more in technical rooms.

If you don’t know at which company the plate was produced and how strictly the production requirements are observed on it, you should either look for another supplier or use OSB 3 only on the outer walls of your house.

Main tasks in the field of industrial safety:

1. Ensuring the level of industrial safety in units operating hazardous production facilities in which the risk of incidents and accidents is minimal.

2. Ensuring the readiness of departments to localize and eliminate the consequences of accidents and incidents at hazardous production facilities.

3. Reducing the size of economic, social and environmental damage from possible accidents at hazardous production facilities.

4. The priority of preserving the life and health of employees of LLC DOK "Kalevala".

5. Maintaining a dialogue with all interested parties and ensuring openness and availability of indicators of DOK Kalevala LLC in the field of industrial safety, except for the case when these indicators are information of limited access.

Environmental Safety

DOK "Kalevala" manufactures products that comply with the European standard EN-300 and high requirements environmental safety for building materials. All products undergo mandatory control in the laboratory of the plant for all physical and physical-mechanical indicators.

The source of thermal energy necessary for maintaining technological process and ensuring the household needs of production is fuel chips.

The energy center also burns all wood waste(bark, wood waste, sawdust) formed at various stages of the technological process. Waste-free production makes it possible to minimize Negative influence on the environment.

Waste gas treatment equipment installed at the plant German company Scheuch, using a wet electrostatic filter, almost completely separates dust and condensed organic compounds and meets the highest European environmental requirements.

Occupational Safety and Health

BOLDERAJA OSB SUPERFINISH® ECO boards offered by Euromet are produced in accordance with a number of interrelated European standards, in which the main product standard - EN 300 "Oriented strand board (OSB): Definitions, classification and specifications" - refers to other standards such as EN 13986 - a harmonized standard for wood panels for use in construction. BOLDERAJA OSB SUPERFINISH® ECO meets the stringent requirements of both EN 300 and EN 13986.

Constant quality control and regular supervision by national certification agencies guarantee full compliance with these standards. This involves taking control samples of raw materials and finished products during and after production process and guarantees the excellent performance of BOLDERAJA OSB SUPERFINISH® ECO boards, certified by a third party.

Properties of OSB ECO boards according to EN 300

BASIC TECHNICAL REQUIREMENTS FOR OSB SUPERFINISH ® TYPE OSB/2, OSB/3, OSB/4:

1) These values ​​characterize the material at relative humidity 65% and a temperature of 20°C.

2) The perforation method values ​​refer to boards with a moisture content of 6.5%. In the case of boards with different moisture content, the perforating value is recalculated.

TECHNICAL REQUIREMENTS FOR OSB SUPERFINISH® ECO TYPE OSB/2, OSB/3:

TECHNICAL REQUIREMENTS FOR OSB BOARDS OSB SUPERFINISH® ECO TYPE OSB/4:

1. Option 1;

2. For the calculation of the flexural strength after the cyclic test, the thickness taken into account is the thickness measured after the cyclic test;

3. Option 2.

Properties of OSB Superfinish ECO boards

SUPERFINISH ® ECO BOARDS COMPLY WITH EN 300 REGULATIONS.

1) Established by the chamber method.

Approximate weight of individual OSB Superfinish ECO boards *

* The manufacturer reserves the right to change technical specifications without prior notice.

OSB Superfinish ECO - dimensions

Wide range of

OSB SUPERFINISH® ECO is offered in a wide range of different thicknesses and formats. Euromet offers boards with both flat and tongue-and-groove edges.

OSB SUPERFINISH® ECO – OSB/3

OSB SUPERFINISH® ECO – OSB/4

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