The size and price of OSB boards: properties, advantages and disadvantages

OSB - construction and decoration material of wide application

OSB panels: what it is and what they are

In order to properly and effectively used in the work of these panels, you need to know that the OSB - is building material which consists of elements of wood, so-called krupnorazmernoj shavings. These particles are joined together by means of heat and pressure, as well as water-resistant resin.

From Particleboard these boards mainly differ in the arrangement of chips in layers: a transverse direction is characteristic for the inside of the plate, but the chips have a longitudinally outside. So, at the expense of several layers (usually three, sometimes four) and alternating directions of chips layout, it turns solid and reliable building material.

Modern plate SIR represents a structural building material of wood

As a basis for the manufacture of such plates are used chips in length from 7.5 to 15 cm. The width and thickness of the chip must also be within the normal range - 1-1.2 cm and 0.5-0.8 mm, respectively. Elements smaller for the production of OSB is not used, they are trafficked to manufacture chipboard.

Depending on the thickness and weight of OSB panels, all products are divided into three major manufacturers of class:

• OSB 1 - the easiest and simplest option boards. Its use is limited to simple work that does not involve too serious load on the surface. Furthermore, the material does not tolerate increasing air humidity;
• OSB 2 - a more durable option, the use of which is permissible even when installing load-bearing structures. However, this material also reacts negatively to exposure to moisture;
• OSB 3 - the most expensive, but at the same time and is the best option. This class boards are not afraid of any serious stress or high humidity. Operation of this building material is allowed even in the harshest conditions.

The use of OSB in the modern interior of a cafe

OSB board production technology

In order to better understand the intricacies of the use and characteristics of the CAP, it is necessary to know how and from which they are derived. Let us briefly consider the production of this material technology.

The first stage - the selection of a suitable timber. Hungry tree trunks non-business pre-selected and cut to small pieces, which serve as blanks. Then a special machine grinds them, making a strand feed. Depending on production needs, you can specify a different size chips, which is obtained at the output. After drying, the material is fed to the machine, where the separation of small from large chips.

After the chips of the desired size will be sorted, they are added to mix the coupling elements. Most cases isocyanate or phenolic substances which give a future inner plate strength and moisture resistance. The resulting mixture is mixed with paraffin and resins in a special drum.

The formation of the plate begins with a chip stacking process layers inside and out. This is done using a special machine equipped with weights and magnets.

The drying process was formed OSB

When the plate potential gained their shape, produce a compact process, exerting a pressure of 5 N / mm². The elevated temperature and pressure provide a strong adhesion elements forming a single integral plate, which after cooling is cut into a desired product size.

Scope OSB

Due to its characteristics, and an affordable price, chipboard OSB is widely used in many fields. Here are just a few of the most basic variants of this material:

• assembling OSB boards on the wall (with both the outer and the inner side);
• laying floors of OSB;
• construction of both temporary and permanent partitions;
• creation of structural elements in a low-rise building;
• creating a solid crates for further laying of roofing material.

Roof coverings of OSB

OSB panels: dimensions and specifications

Specifications OSB pleasantly surprise even the most experienced builder. Below is a look at what are the main characteristics of this material make it so attractive.

Ease of handling. Having a standard set of carpentry tools, you will be able to work with the OSB plate easily. To give it the desired shape and size, you can cut it, cut, planed or sanded. And to ensure it secure attachment, it is possible to drill or punch holes in it for the fasteners.

High retention capacity. Major elements of the chips used in the production process, allow the nails driven into the plate, even at a minimum distance from the edge (6 mm), without the risk of chipping. OSB perfectly holds fasteners.

OSB panels are widely used in construction

Also, as a method of fixing plates may be used carpenter's glue.

Useful advice!If you plan to use OSB sheet as the outer fabric, be sure to provide him protection using special paint composition.

Density plate. This figure for the standard OSB 3 (the value may vary slightly depending on the manufacturer) is about 640 kg / m³.

Moisture resistance. Despite its wood origin, OSB boards react on contact with humidity absolutely calm. Of course, they can deform under the influence of water, but this reaction is visible only when the humidity rises above 65%. Up to this point plates can withstand changes, fully preserving its appearance and characteristics. The most resistant to moisture - OSB 3. First class products, respectively, have the lowest water resistance.

Fire safety oriented strand boards. During the examination of the technical characteristics of OSB 3, this point raises many questions. After fine wood particles are readily ignited, and may represent an additional danger in case of fire. However, numerous experiments have shown that use of the material for the building of houses as possible. However, it is desirable to combine it with a non-combustible fillers or heaters, for example, mineral wool.

Building a house of OSB

Dimensions oriented strand boards may be different, depending on the product class, and a method of processing its edges. Classic products is considered to be Class 3 CAP with such dimensions:

• 2500h1250 2440h1220 mm and provided smooth trim edges of the platen;
• 2500h1250, 2450h590, and 2440h590 2440h1220 mm for slabs with a tongue.

Depending on the intended use and the type of product, panel thickness may vary from 9 to 22 mm.

Related article:

OSB Sheets: thickness and dimensions, prices and specifications.Parameters, classification, methods of production and application. Technical characteristics of the different species.

Advantages and disadvantages of OSB

Based on some experience of using OSB, the characteristics of this material, as well as a review, it is possible to draw certain conclusions regarding the pros and cons of this material. The advantages of using the SIR:

• probability of delamination, splitting or chipping appearance almost completely absent, due to the homogeneous slab structure;
• correctly oriented chips prevents the penetration of moisture and also makes it possible to safely hammer nails into a board;
• OSB boards easy to cut, saw, etc .;

The stylish interior of the apartment decorated with OSB

• for connection between the plates is excellent way to comb-notch;
• plate insensitive to rapid changes in temperature and moderate weight loads;
• structures built of OSB have indispensable quality - elasticity. This allows them to better tolerate any tremors, than, for example, stone structures;
• in the presence of the relevant certificate, the finished product is completely safe for human health;
• with all its advantages and characteristics, OSB plates remain affordable price. Depending on the thickness and size, price SIR plate 3 can start from 580 rubles per sheet.

It is difficult to mention some serious drawbacks to this product. The only thing to remember is that work with any wood products require respiratory protection. Resins, which are part of the wood dust are carcinogens that are not safe for human health. The rest of the cons is quite difficult to find. Just see the photos OSB boards on the Internet, to see how widely they are used in construction, and how many projects can be realized with their help.

The use of OSB in the modern interior design

Whether there is the use of OSB boards harm to human health

Oriented strand board is called a fully environmentally friendly material. However, despite this, you can hear many different opinions, claiming the terrible danger fraught with OSB boards. Try to figure out whether these concerns are justified, and whether there is a real threat to health in the case of the use of this product.

According to statements of those who believe in insecurity used for the manufacture of compounds phenol-formaldehyde, urea-formaldehyde and melamine-formaldehyde resins are synthetic origin. And even though they confer OSB all the qualities for which they are so highly sought after, non-compliance with manufacturing technology, they may not be safe even after complete solidification.

Useful advice!Particular attention to the certification of the acquired product should pay attention to those people who have a predisposition to allergic reactions, as well as families with small children.

The dangers posed by the excessive secretion of carcinogenic impurities such as formaldehyde, phenol, benzene, and methanol - very severe. It is fraught with the appearance of skin allergic reactions, and the likelihood of serious diseases. As a result, the effects of these substances are often marked by violations of the cardiovascular system.

OSB boards are widely used in the construction of any building and homes

How to solve this problem? In order to minimize the negative impact of the risks of substances on the human body, it has been developed special classification, which provides for the admissibility of the use of each type of OSB in various conditions.

Marking OSB

In order to ensure that the manufactured products meet state standards and SNIP, every major manufacturer necessarily required to provide their products to undergo sanitary examination. Thus, each shipment gets its own certificate, which specifies which tests were conducted and how the products are safe to use in a residential area.

The European standard DIN EN120, which was recognized in Russia, provides the following classification, depending on the amount of formaldehyde contained in the product. Per 100 grams dry matter:

• E3 - 30 mg;
• E2 - 10-20 mg;
• E1 - up to 10 mg;
• E0 - 6.5 mg.

Marking plate SIR-3

Useful advice!To better understand the proposed figures, consider that the normal amount of formaldehyde in air is not more than 0,003 mg per 1 m³, while in the process water contains up to 0.5 mg / l.

Thus, the product quality must be documented, especially OSB boards for interior decoration. Harmful in the certificate does not indicate, however, a minimum safety class indicated. Using products with E2 and E3 marks for internal works is strictly prohibited! Such materials are used only for the outer skin for decoration or commercial premises for example attics, huts and sheds.

In spite of the serious danger, to find safe products is relatively easy. Most of the major manufacturers, in addition to the mandatory inspections, give their products to a variety of tests on their own initiative. However, unfortunately, this concerns mainly foreign companies. Domestic manufacturers like to boast can not yet.

OSB boards - universal building material

What to look for when buying OSB

Before you pay for and pick up your item purchased, pay your attention to the following nuances:

• pungent smell of formalin or plastic - the feature that clearly indicates the enhanced toxicity of the product;
• when you buy be sure to demand a copy of the certificate itself, certified by the seal of the supplier or the manufacturer, and confirming the safety of products;
• before you pick the item up, inspect the package. It must be solid, be marked and additional package insert information about the product;
• again make sure that the security level of the acquired material is not higher than E0 or E1.

If you pay attention and responsibly react to the selection and purchase of OSB, then there is no real threat to your health will be.

Packed SIR sheets

Manufacturers, sizes and prices OSB

As already mentioned, one of the advantages of oriented strand boards - affordable price range. Acquiring CAP, you get the same natural wood, but at a better price.

First, what determines the price of OSB - plate size and manufacturer. Depending on what kind of filler used in the manufacturing process, the cost will vary.

On average, 1 m² simplest OSB produced in the EU or the United States will cost you from 180 to 400 rubles. Of course, if you make a wholesale purchase and order several cubic meters of the product, you will be given a significant discount. But most of the customers prefer to purchase the sheets one by one.

Interior decoration home plate OSB

For example, the price of OSB boards for the floor may start from 590 rubles, and reach up to 1430 rubles apiece. Slightly smaller range OSB prices are for exterior finish - from the lower boundary 550 up to the upper limit in 1051 rubles apiece.

Specifications, producers and the average price of OSB 3:

Of course, much depends on the class of the plate, as well as its size and thickness. But as we can see from the table, even products with very similar specifications may differ in price just because the manufacturer.

Features OSB installation

Construction oriented strand board, as well as any other material, have their own characteristics and installation requirements. Consider some of them by the example of the external cladding of the house.

External cladding OSB home

Firstly, the materials selected, the thickness of which is from 11 to 13 mm for exterior finishes. Secondly, the greater the area of ​​the sheet that you use, the less you'll have to handle the joints.

Between the two sheets at the time of attaching them to the uprights sure to leave a small gap - no more than 3-5 mm. This is done in order to increase humidity at the plate could swell and thus not deformed.

In order to secure the OSB plate to the wall surface can be used as self-tapping screws or spiral nails. However, unanimously agreed that the best way to mount - combined. Use both at the same time - is to provide the most secure fit, which is possible.

Useful advice!In order to prevent situations where the plates of the fastener to the edge of the crack appears, it is recommended to indent 7-10 mm.

Example of wall construction of a frame house

Another important point - the arrangement of the waterproofing and protection from the wind. For this purpose, a special Super diffusion membrane, which copes with these features and at the same time removes the moisture from the walls, not allowing to accumulate condensate. Some try to replace it with a conventional polyethylene to spare. However, the problem is that a simple film does not contribute to removal of moisture that could eventually lead to processes of decay material.

Such broad popularity oriented strand boards is understandable, because not a lot of materials are make them compete, poborovshis for supremacy not only technical specifications, but also the price range.

As for the disadvantages associated with the risk of the product to human health, there is likely only need to devote time - a time to understand the issue and find the OSP safe class. For the rest, it is very convenient, practical and modern material, which can rightly be on par with the wood.