The main scope of OSB boards is the arrangement of the structural elements of the building: roof, floor, walls. At the same time, the installation of OSB slabs has some features, the knowledge of which will help to make the sheathing of high quality and durable. Before you start installation, you need to decide on the choice of hardware, which will play a major role in fixing the OSB.

Used nails and screws

There are many types of nails that are used depending on the location of the plate and its weight:

• finishing: used where camouflage is desirable and the likelihood of pulling out is minimized. Often used in conjunction with glue.
• round without a hat: needed when laying floors, when installing frame structures and when fixing plates with a tongue and groove connection
• with a hat: used where there is no need for disguise;

There are also special nails that have an annular or screw type thread. Such hardware holds the nailed plate better, but is difficult to pull out.

It is best to fasten the panels with screws designed for working with wood - the reliability of fastening increases dramatically. This allows the use of a much smaller number of screws when compared with the number of nails. If necessary, the screw can be easily unscrewed by switching the screwdriver to reverse.

Roof finish

Before starting the installation, it is necessary to make sure that the lathing or rafter legs are parallel. The surface must be leveled, and failure to comply with this requirement leads to the impossibility of a reliable tongue-and-groove connection.

If the slabs prepared for installation have been exposed to rain, they must be dried before laying.

Before installation, make sure that the attic space has adequate ventilation ( total area ventilation holes must be at least 1/150 of the entire horizontal area).

The largest part of the operating load should lie on the long axis of the slab. The articulation of the short ends must be carried out on roof supports. The long sides are joined on auxiliary supports, the connection method is tongue-and-groove or H-brackets.

If the edges of the plates are even (i.e., there is no tongue and groove), then a dilatation gap of 3 millimeters should be left. This will enable the material to change dimensions with temperature changes without compromising the quality of the coating.

The slab must rest on at least 2 supports (on which the connection must fall). The dependence of the distance between the elements of the crate on the thickness of the OSB is shown below (for roofs with a slope of no more than 14 degrees):

• 1m: plate thickness from 18 mm;
• 0.8 meters: thickness from 15 mm;
• 0.6 meters: thickness from 12 mm.

When laying the slab next to the chimney, it is necessary to comply with the norms established by SNiP. Quality mount osb slabs to the rafters are possible using ring nails from 4.5 to 7.5 cm long, or spiral nails 5.1 cm long. The distance to the edge of the slab cannot be less than 10 mm.

Installation of OSB on walls

Installation can go in two ways: in a horizontal position or vertical.

When bypassing the window, doorways leave a gap of approximately 3 mm.

With a distance between the wall supports of 40-60 cm, it is recommended that the walls be sheathed with OSB slabs 1.2 cm thick. If thermal insulation is necessary, then it should be arranged before fixing the slabs. As a heat-insulating material, preference should be given to mineral wool.

To fasten the plates, two-inch spiral nails (51 mm) or ring nails from 4.5 to 7.5 cm long are used. They must be driven every 30 cm into intermediate supports. At the joints of the plates, the nails are driven in every 15 cm. From the edge, the nails should be hammered in increments of 10 cm (no closer than 1 cm from the edge).

Dilatation gaps must also be left:

• between the top edge of the slab and the crown beam: 1 cm;
• between the lower edge of the slab and the foundation wall: 1cm;
• between plates that do not have a groove-ridge connection: 0.3 cm.

Floor laying

Before laying the material, it is necessary to make waterproofing (if the floor is done on the first floor).

OSB boards should be connected on logs. If there are no grooves and ridges, maintain the same gap of 3 millimeters. If a floating floor is planned, leave a gap of 1.2 cm between the wall and the edge of the slab.

OSB sheets should be laid perpendicular to the joists. The long edges of the plates must be connected to each other by means of a groove and a ridge, and in their absence, with H-shaped brackets. It is desirable that the connection rest on an auxiliary support. The short sides of the slab must be connected on the logs. The dependence of the thickness of the slab on the distance between the lags is shown below:

• from 1.5 to 1.8 cm: the distance between the lags is not more than 40 cm;
• from 1.8 to 2.2 cm: no more than 50 cm;
• from 2.2 cm: distance - 60 cm.

For fastening, the same types of nails are used, which require OSB wall cladding and roof arrangement. On intermediate supports, nails are driven in increments of 30 cm, at the junction of plates - in increments of 15 cm.

To increase the rigidity of the entire coating, giving it a holistic look, you can glue the plates to the logs. It will also be useful to glue the groove-comb connection.

It is necessary to use only synthetic glue (water-based compositions are ineffective due to the presence of paraffin in the structure of the plate).

OSB finish

After fixing, you will need to finish the walls from OSB. The most common way is putty. This method allows you to seal all the gaps in the joints to prevent moisture from entering. Plus, a quality job will help prepare the slabs for possible further finishing (for example, varnishing or painting).

To obtain an aesthetically attractive look, it is better to use plates specially polished by the manufacturer. In this case, you will have to spend less time and material on future finishing.

Before carrying out work, you should walk on the plate with a finely notched sandpaper, and then cover the surface with a primer (it should not be water-based). Next, you need to choose how to putty OSB. It is better if the composition you choose is colorless. To do this, use one of the types of putty.

After completing this stage, you can think about how to finish the walls from OSB. For example, it could be varnishing. The plate should be varnished in 3-4 steps with complete drying of each layer. Lacquering will add shine to the surface and provide reliable protection against moisture penetration.

Another way of finishing is painting. Use paint that does not contain water. After priming and applying putty to the OSB board, it can even be laminated or finished with a special film.

Most of the ways to finish the house are available after the walls have been sheathed with OSB boards in compliance with the technologies and recommendations of the manufacturer.

Installation of OSB boards: wall cladding, fastening, surface finishing

Mounting OSB boards on the walls inside the house. OSB sheathing technology with sheets.

Before talking about the technical details and intricacies of the inner lining of OSB or OSB boards (they are also OSB, OSB sheets), it is worth considering the appropriateness of this event. Installation of OSB boards indoors takes place in two cases, namely:

1. If you have frame house and the frame is still unfinished.
2. If the pattern and texture of OSB boards are an element of decor.

If you just need to align the walls, then for this purpose better fit drywall, as it is cheaper and more convenient to work with during installation and further finishing.

The technologies for the outer skin of the house are described in the article: fastening OSB boards from the outside. Here we consider the issue of proper installation of OSB boards on the walls inside the house.

The choice of plates for mounting OSB on the walls inside the house

When using any material inside the house, including OSB boards, attention should be paid to its harmlessness to the health of the inhabitants of this house. Already 34 years have passed since the appearance of OSB boards and all these years the debate about the environmental friendliness of OSB boards has not stopped. In fact, there are grounds for these disputes, since indeed, when gluing wood chips, polymer resins containing formaldehyde are used. But formaldehyde is also found in many other surrounding things, for example, in fabrics in chipboard furniture, combustion products, etc.

OSB slabs on the walls inside the house.

In order to exclude formaldehyde poisoning of people, enlightened Europeans established control over the production of OSB boards and divided the harmfulness of boards into classes. Plates with formaldehyde emission class E1 are harmless to human health and are used in the construction of residential buildings. Therefore, when buying OSB panels, choose a reliable and trusted manufacturer, as your health may depend on it. The Austrian four-star hotel Arlmont, whose interior decoration is replete with OSB panels, will say better than any words about the environmental friendliness of OSB panels.

Arlmont Hotel, OSB sheets used in the interior.

OSB boards are divided into classes according to water resistance:

OSB-1 is the board class most exposed to moisture and has the lowest strength. Such boards are used for the production of furniture.

OSB-2 - a class of boards with the same moisture resistance as OSB-1, but more durable. Such plates can be used for wall cladding in dry rooms.

OSB-3 - moisture resistant boards with high strength. They are suitable for installation in damp rooms. But with prolonged contact with water, they deform.

OSB-4 - boards with maximum moisture resistance. They are able to withstand prolonged contact with water.

OSB4 boards do not have wide popularity due to their price, which is on average twice as high as that of OSB3 boards. Therefore, OSB3 boards are widely used. If they are treated with a primer or painted with paint, then such plates become resistant to prolonged contact with water.

Sheathing the walls of a frame house from the inside

Before proceeding with the interior cladding of a frame house, it is necessary to insulate the walls, close the frame from the outside and the insulation with a vapor barrier.

It is recommended to insulate the walls with mineral wool, and it is better to use slab wool, since it is easier to work with than with expanded polystyrene, it holds better in vertical structures and does not settle down, which happens with fiberglass insulation. Other heaters are not excluded and are also suitable for insulating the walls of a frame house. For more information about the various heaters can be found in the article: the choice of insulation.

After the walls are insulated, they must be closed with a vapor barrier. The vapor barrier membrane protects the wall from the penetration of moisture into it, which will keep the frame of the house and the insulation dry. The vapor barrier is fastened with a conventional construction stapler, with an overlap of 10-15 cm and glued together with a special double-sided adhesive tape.

An example of the construction of the wall of a frame house. FROM inside a vapor barrier film is laid on the frame, OSB boards are attached on top of it.

The sheathing itself is made as follows, the sheets are alternately screwed to the frame of the house one after another. The gap between the sheets is 3 mm. Sheets are screwed with wood screws 35-40 mm long. All holes (for windows, doors, mounting holes) are cut with a jigsaw.

Decorative wall cladding with OSB boards and battens

As a crate, it is best to use a metal profile as for drywall. It is easy to install and does not warp like wood. When choosing wooden bars for battens, it is better to use dried wood bars, because such bars bend and twist less when they dry out. The installation technologies in both cases are not fundamentally different, so we will consider them using the example of a crate made of metal profiles.

In order to sheathe the interior walls with OSB boards, you need to start by installing the sheathing on the walls of the room.

The technology for mounting the crate looks like this:

1. First you need to install the starting profile, which is mounted on the adjacent walls, floor and ceiling as in Figure 1. On the sides, the profile must stand strictly vertically and close along the perimeter with the upper and lower profile.

Figure 1. The start profile is mounted to the adjacent wall. And closes with the top and bottom profile.

2. After installing the starting profile, it is necessary to make markings on the wall for suspensions. Since the hangers will hold the vertical posts of the crate, you need to mark it in such a way that two solid OSB sheets meet in the middle of the profile, you also need to install one profile in the center of each solid OSB sheet.

Hangers are attached to the wall. A crate is attached to them.

3. We mount the profile. When fixing the profile on hangers, it is important to control the plane of the lathing with the rule so that “pits” or “belly” do not form on the wall in the future.

Installation of OSB boards on an internal wall using a crate.

After mounting the crate, we fasten the panels to the OSB screws with a gap of 3 millimeters between them. The gaps allow in the future to avoid deformation of the plates due to their expansion with changes in humidity. After installation finished walls can be varnished or tinted, based on individual preferences.

Installation of OSB sheets on the walls inside the house

Very comfortable and multifunctional material for different construction works– oriented strand boards. Since the technology for the production of these plates is not complicated, for interior finishing work, the master can choose a specific option from the four types of OSB plates or consider special types of these plates.

What are the sheets of these products made of? It's simple - wood chips are used (flat fragments are used), shavings: these materials stick together and it turns out really excellent finishing material. Three or four layers of wood chips or shavings - these are the indicators that can be called optimal. Mounting OSB on walls is more preferable than using the same chipboard.

However, oriented strand boards are a kind of modification of wood-fiber material, some of its modern analogue. If finances allow, it is better to choose OSB for facing work (plywood or chipboard is increasingly being abandoned today).

Scope of OSB, classification of plates

Finishing houses inside is often done with OSB slabs.

Before considering the classification of slabs and deciding what is the best way to finish walls from OSB, it is important to pay attention to the characteristics of such a material.

Types of OSB boards

Here everything is as follows:

• OSB boards of the first class - they are usually chosen for such premises where there is a low level of humidity;
• Type two - the material can be safely chosen for dry rooms, it is even used as structural element during construction work;
• Type 3 OSB - these plates are used in those rooms where there is a high level of humidity;
• The fourth type of such products is used for cladding structures that are able to cope even with significant mechanical loads. Moreover, we are talking about conditions where the level of humidity is high.

Application area

The material has a wide range of applications

One thing can be said about the scope of application - the installation of OSB is a really relevant task, since such plates are used in many construction aspects.

It's just that this material has such a manufacturing technology, due to which all internal defects are simply excluded (at the same time, they very often appear in chipboard sheets - voids, uneven fillings). Due to all this, OSB is a more preferable option - it does not deform, does not shrink.

The tools needed to work with OSB are in any household.

And now in detail - Where can this material be used??

1. Often for walls, OSB sheathing is a very profitable solution. Due to this approach, the house receives reliable protection from dampness, while also gaining additional insulation. What is most pleasant here: there is no need for additional finishing work after OSB installation;
2. In the construction of frame-panel houses, OSB slabs are usually used, which have high level moisture resistance;
3. Since the material has such a valuable quality, it makes a decent reusable formwork;
4. It is used as a base when making external wall cladding, as well as during internal works- if wood finishing is carried out country houses, cottages (from timber, rounded logs);
5. OSB boards are your faithful assistant if you are making a sheathing, roof rafters. This material it can work even under a serious load - it will definitely withstand the weight of not only the roof itself, but also all related loads (wind, snow) - even if natural tiles are laid on the roof (material that weighs a lot);
6. If you need to level the floors in the house or lay them from scratch - here again you can pay attention to the OSB installation. Just such a plate is ideal for creating a very strong, even base. It is best not to find under plank floorboards, carpets or other coverings;
7. Pay special attention to the process when it is necessary to fit the joints of the plates along the plane. If necessary, they must be equalized - without this in any way.

An interesting point - not every manufacturer can use OSB boards as underlayment layers - in the case of organizing floor coverings. And the laying of the panels is carried out so that the smooth side is located up.

What else does a master need to know?? Following:

• Apply additional protective covering in the form of paint or varnish is not necessary - the material initially has excellent protection in the form of special impregnation;
• Processing plates is not so difficult - about the same as ordinary wood. Screws, nails on the surface are excellent. OSB boards are not afraid of rotting, fungal influences, decorative qualities such material at a height;
• OSB panels are often used today in furniture production - after all, this is a great alternative to natural wood (but in terms of cost - it is significantly more profitable);
• The material does not weigh that much - therefore, it is perfect for finishing, construction, painting work and more.

How to finish your house faster

The material is easy to attach - this can explain its popularity.

It is quite logical that any owner wants to move into his house faster - especially if the construction is carried out independently. Private cottages are located separately from neighboring buildings - so in this design you don’t have to worry about neighbors.

Here a well-founded question may arise: maybe not to make a rough sheathing - but immediately fasten the OSB finishing materials directly to the frame racks?

Is such an approach to business allowed, or is it excluded?

If you pay attention to the instructions drawn up by professionals, it will immediately become clear: this cannot be done. There will also be reasons for such a conclusion. Simply, it is important to insulate the house - only in this situation it will be comfortable in it (especially since winters in the Russian Federation are cold - almost throughout the entire territory).

Why are frame cuts required at all - lower and upper? Everything is simple here: they form spatial rigidity - together with the skin. They can also be called mandatory elements, if we consider the design of any frame structure.

A frame that does not have slopes, even with sheathing, will retain its mobility - as in the case when there are any. However, if there is no skin, you can imagine what the consequences could be.

Exterior wall cladding

Installation of OSB can be performed outside

For rough sheathing, a lot is used today different materials. There is definitely a choice here - everyone will agree with this. Pay attention to at least these options:

Any of these surfaces needs a fine finish: it can be sheathing with siding, cladding with plaster - with a mesh or a layer of foam. There is an opinion that even boarding can be left as a fine finish - but in this case it will be necessary to process the wood additionally. Under the boards, hydro-wind protection of the walls is also arranged.

AT roofing works these plates are also used all the time

You should consider the following: it is not recommended to finish the frame with a board - without rough, preliminary sheathing of OSB with plates. Otherwise, there is a risk that the boards will unscrew in the fall or spring. In addition, it is important for the spatial rigidity of the frame.

You will get fewer joints due to the area of ​​\u200b\u200bOSB sheets - which cannot be said about working with other materials. OSB trim is usually made with a material whose thickness is 11-13 mm.

Let's take a closer look:

• The OSB plates are fastened to the racks so that there is a joint in the middle. And between the plates there should be a small gap - three to five millimeters is enough;
• The sheet completely overlaps the lower trim;
• The upper harness is closely connected with the number of storeys of the house. It will be hidden entirely - and the edge of the OSB plate will be aligned with the edge of the strapping if the structure has only one floor;
• When the building consists of two floors, the sheet is located as follows: it must go to the racks of both floors at once. But somewhere in the middle of the sheet, the upper trim overlaps. This condition cannot be called mandatory, but if it is met, the rigidity of the structure increases significantly, which benefits the structure;
• Sheathing with OSB boards when fastening to a window opening in two-storey houses, should be made in one piece - this is exactly what professionals advise. Then all joints can be moved to adjacent racks outside the opening racks. A window opening is simply cut through in the slab - there is nothing complicated in such work;
• When horizontal or vertical jumpers are made in the frame, a very convenient joining of the plates is obtained. In the event that these jumpers have the same cross section as the racks - and this happens often;
• For fastening, spiral nails are selected. Self-tapping screws are also suitable - 0.5 or 0.45 cm long. You should not refuse combined fasteners (both nails and self-tapping screws) either - such a solution is considered to be of very high quality.

Keep in mind that basic rules for the execution of fastening work must be observed.

1. It is customary to fix the finishing of OSB plates in intermediate sections every 300 mm;
2. After 150 mm, fix the places where the plates are joined;
3. After 100 mm, the outer edge must be stitched.

A room with walls sheathed with OSB

Also, you should know:

1. The superdiffusion membrane is installed depending on what is the rough lining with materials, what is the fine finish. For example, the membrane is often attached close to the insulation - to the racks of the frame;
2. They make a crate (here wooden slats are used, the cross section of which is 2 by 5 or 3 by 5 cm. Thanks to this design, the required gap will be achieved. Then it is already possible to finish the OSB surface with slabs, LSU, DSP or sheathe with boards;
3. From the inside of the room with the help of a film, you can make a vapor barrier of the walls. The material is installed in such a way that it fits snugly enough to the insulation. For fastening, a construction stapler is used. The overlap is done by joining - 150-200 mm, the joints must be glued with adhesive tape.

Slabs can be laid on the floor - many do

Finishing the structure inside

Many refuse to use drywall sheets in favor of OSB boards.

Which is better: OSB cladding or plasterboard cladding? Many people are unambiguously inclined in favor of option number one - when it comes to interior finishing work in the house. It is quite difficult to keep the frame racks in a completely even state - when work is being done, the same applies to drywall.

It's just that the sheets of this material are softer when compared with osb boards. They will easily repeat all the bumps - so then you have to work hard to get perfect flat surface- more layers for alignment will need to be applied.

OSB board in its structure is an order of magnitude tougher than drywall sheets, so all flaws can be some degree smooth out. After that, they begin to carry out work related to the final finishing.

OSB-3 boards and roofing

In roofing work, the material has its advantages

Roofing is a very popular way to use material such as OSB boards. By the way, to cover the roof with OSB-3 slabs, a material thickness of 0.18 cm is enough.

• Both the castle and the flat edge can have products. The first option is more preferable;
• Between load-bearing beams the distance should not be more than 609 mm - this applies to both the organization of sloping and flat roofs;
• Whether the plates are able to expand is of great importance. It is customary to leave a gap for each linear meter: 2 mm is quite enough (believe me, this is enough);
• When laying plates with even edges, the gap is already made a little larger - 3 mm. Leave it around the perimeter of each plate - this is the only way to achieve optimal results;
• To fix the OSB to the roof, nails are chosen. Attached to support posts. There should be a distance between them: 10 cm or even more;
• Finishing OSB boards are attached with nails - they should have a length that exceeds the thickness of the board by two to two and a half times (or even more) - this is quite normal.

Frame construction in full swing - cladding is present

If the interior decoration is carried out using OSB panels, the following can be noted here: a slab of polished panels will look better if it is very important in your space appearance. For finishing such plates it is better not to use ceramic tiles or wallpaper - this is recommended by the manufacturers themselves. And it is best to listen to their opinion!

Sheathing of internal walls with OSB slabs

Finishing the walls and applying a decorative coating are of great importance in drawing up the design of the room. More recently, obtaining a flat plane was a complex and time-consuming process that required certain skills.

With the advent of new building materials almost anyone can do it. Installing OSB on walls is one of the options wall cladding, which will not be difficult to do with your own hands.

Features of the OSB board and the main stages of wall cladding

Modern methods of interior decoration are strikingly different from those that were used 10-15 years ago. The long and complex process of plastering surfaces has been replaced by more simple options finishes based on the use of drywall and OSB boards. At the same time, it is oriented strand board that has all the necessary qualities that distinguish it from other building materials on the market.

OSB is a sheet material that consists of wood chips impregnated with a special adhesive and highly compressed. Due to this structure, the material is able to withstand enormous longitudinal loads and resists transverse forces quite well.

The surface of the finished slab is covered with an additional layer of liquid paraffin and resins, which make it immune to the effects of a humid environment. Depending on the marking, the degree of security of the sheet also varies. OSB-3 and OSB-4 are distinguished by the greatest immunity to humidity. Therefore, such material is most often used to create an external coating and interior decoration with increased level humidity, such as a kitchen or bathroom.

OSB wall cladding with a slab inside can be carried out using a material with a lesser degree of security, such as OSB-1 or OSB-2. Standard sizes plates are 2500x1200 mm. The only parameter that changes is the thickness. It varies in the range of 6-22 mm, which contributes to the expansion of the scope of the material.

The best option for interior finishing work is a 10 mm thick sheet, which allows not only to get a solid foundation, but also to save a significant part of material resources. Wall cladding with OSB boards makes it possible to increase the level of thermal insulation of the room and is carried out according to the following technology:

• tool collection;
• preparatory work;
• installation of the crate;
• insulation installation;
• fixing OSB sheets.

All these stages are extremely important and require detailed study. Strict adherence to the installation technology and a responsible approach to business is the key to obtaining a strong monolithic plane. Moreover, each of them can be done by hand without any problems.

Preparatory work and collection of the necessary tools

The process of finishing OSB walls with slabs is clearly structured and begins with the collection of the necessary equipment. It is this stage that marks the beginning of work and is the threshold installation work. The list of required tools is as follows:

• Tape measure, metal shears or grinder, pencil, level, plumb line, hacksaw, screwdriver set, screwdriver, drill.

Such a list of tools is optimal and makes it possible to complete the entire cycle of finishing OSB walls with do-it-yourself slabs from the very beginning to the end. The list contains only the necessary inventory, which cannot be dispensed with during the installation process. If possible, it can be expanded by adding a laser level, jigsaw or other useful tool. Preliminary collection and preparation of inventory can significantly reduce the time of construction work and optimize them.

The essence of the preparatory work is to process the initial surface and create optimal conditions for frame installation. Also, their immediate part is the markup. Initially, all debris and parts of the departed old finish are removed from the wall, and all cracks and holes are sealed. Some mistakenly believe that preparation can be neglected, since the initial surface will be completely hidden under the OSB panels.

However, if one of the tasks of wall cladding is to improve its thermal insulation properties, compliance with this stage is mandatory. The presence of cracks significantly increases the thermal conductivity of the plane due to the formation of cold bridges, followed by a shift in the dew point into the building. Therefore, all cracks and holes must be completely sealed, and all pieces of the old finish removed.

Marking is necessary to simplify installation work and determine the exact location of the frame structure. Based on the dimensions of the OSB board, the optimal step between the posts will be their location every 50 cm. In this case, with a horizontal orientation of the sheet, both of its edges will be fixed, since they will lie on the profile.

The erection of the frame system and the laying of thermal insulation material

Sheathing the walls from the inside begins with the installation of the frame system. The role of the main components of the crate can be metal profiles or wooden beam. In this case, the first option is more preferable, since it is simpler and more convenient to use. The frame is created in accordance with the following scheme:

• The guide CW or UW profile is fixed to the ceiling and floor according to the markings. Its purpose is to fix vertical racks. It is fastened every 40-60 cm. In this case, depending on the material of the initial surface, various fasteners are used. Dowels are used to work with concrete and brick, and installation on a wooden base is carried out exclusively with the help of self-tapping screws.
• The first profile is the most important, since it is he who sets the direction of the future plane. It is carefully measured with a plumb line and level. The exposed rack is installed in the grooves of the lower and upper profile, and after that it is additionally fixed with brackets in the middle.
• At a distance of 50 cm from the first rack, a second profile is installed, which is also carefully aligned. Its fastening is carried out in a similar way - first at the upper and lower points, and then in the middle. The step between the central parts of the racks at any point of the profile should be 0.5 meters.
• All subsequent profiles are mounted in the same order to the opposite wall. For increase bearing capacity crossbars are installed between the profiles. They are made from an ordinary CD profile and are designed to additionally connect the structure.

The finished frame is the ideal basis for creating an OSB wall. When creating partitions indoors, the crate can not be insulated and immediately sheathed with particle boards. However, when it comes to finishing walls facing the street, it is better to use the inter-frame space to good use by filling it with thermal insulation material. Most often, for the insulation of frame systems, it is used mineral wool, which is sold as a single roll or in the form of square mats.

The standard width of any type of material is 60 cm. It is laid close to the wall so that the initial plane is completely closed and does not contain gaps. All seams are tailored and sealed to the maximum. A vapor barrier is mounted on top of the insulation layer, designed to protect it from exposure to the smallest particles of moisture.

Fixing OSB boards on the crate: the structure of installation work and its features

It is necessary to fasten the OSB carefully, starting from the lowest point, best from the corner. Immediately before installation, the material is not processed by anything. The main thing is to give him the necessary dimensions and take into account all design features rooms. The orientation of the sheet also does not matter. It can be mounted both horizontally and vertically. Although the installation of OSB inside the house does not contain any secrets, it must be carried out using the following technology:

• The first plate is installed in the very corner of the plane in such a way that at least 7-10 mm of free space remains between the surface of the adjacent wall. This gap is necessary to avoid deformation of the sheets, which may occur as a result of thermal expansion of the material. The location of the plate is carefully measured in terms of level and plumb.
• The plate is fixed using self-tapping screws for metal. To work with a 10 mm sheet, the optimal length of fasteners is 16-20 mm. OSB is fixed with self-tapping screws every 10-15 mm
• The second sheet is installed directly above the first and is also carefully aligned. Plates do not fit tightly. Taking into account thermal expansion, the required clearance is 2-3 mm. Using a drill to drill into places for future fasteners greatly facilitates the procedure for fixing the top sheets.

Using a similar principle, it will not be difficult to sheathe an OSB wall with slabs. Subject to the installation technology and strict adherence to the proposed plan, the finished surface will differ not only in uniformity, but also have an excellent appearance. In addition, the procedure for laying an additional layer of thermal insulation will make the building much warmer and save a significant part of the material resources for its heating.

Finishing walls with osb slabs is the second most popular way to get a perfectly flat plane, after drywall. At the same time, its bearing characteristics will be much higher compared to the same drywall construction. The reliability of such a system is due to the qualities of the oriented strand board and its thickness. The best option for wall decoration are 10 mm sheets, the cost of which varies in the region of 900-1100 rubles.

Sheathing OSB walls with a slab inside: the structure of installation work and their characteristics

In construction and repair, various sheet materials are often used for wall and ceiling cladding. One of these materials is oriented strand board (OSB), which is also sold under the English name OSB (Oriented Strand Board).

OSB: what is it and how to use it

OSB is made from wood chips and large chips, gluing them together with high temperature synthetic resins.

The slab consists of several layers, usually 3-4, with different chip orientations.

In the outer layers, the chips are located along the long side of the sheet, in the inner layers - across. According to its characteristics, OSB is close to plywood, but costs less.

Advantages and Features

A distinctive feature of OSB is its high strength, due to the cross arrangement of wood fibers. In terms of strength, the boards are superior to MDF, chipboard and wood, slightly inferior to plywood. Plates show high resistance to chemicals. Some manufacturers use special impregnations in the production of boards - fire retardants, which reduce the combustibility of the material. OSB boards are easy to process; to work with them, you need a regular woodworking tool.

How OSB boards are calculated

Basically, 2 standard sizes of plates are 2440 * 1220 mm (American standard) and 2500 * 1250 mm (European). There are OSB and other sizes, but they are much less common and are produced mainly to order.

To calculate the quantity, it is easiest to draw a wall plan on checkered paper, taking the cell size as 250 for European standard plates or 300 mm for American. Then draw OSB boards on the plan and count their number. It is better to arrange the sheets in a checkerboard pattern. In this case, it is necessary to take into account how the surface will be finished in the future.

If sheathing is planned, for example, with siding on the street or gypsum board indoors, joining with non-factory cuts is allowed, but if painting is provided, try to join the plates with factory cuts. It is desirable to keep the number of joints to a minimum. For example, it is better to sew up a wall fragment measuring 2.4 m by 1.2 m with one sheet, and not with 3 pieces of 0.8 * 1.2 m, because it is rather difficult to make a perfectly even cut, and even a slight deviation from straightness forms a gap. To the received amount of OSB, you need to add a few sheets for a margin in case of marriage or errors when cutting.

An easier way is to divide the surface area by the leaf area. In this case, "in reserve" it is necessary to take at least 20% of the quantity. Round up the resulting number.

What are OSB boards for exterior walls

OSB is made of 4 types:

• OSB-1 - used only in dry rooms for sheathing.
• OSB-2 - used as a structural material in dry rooms.
• OSB-3 - can be used both indoors and outdoors. Can be used in conditions with high humidity. Strength allows OSB-3 to be used as a structural material.
• The most common class of OSB-4 is more durable and moisture resistant than OSB-3.

For exterior wall cladding, only classes 3 and 4 can be used.

Installation outside: crate

External wall cladding can be carried out in several cases:

• In order to level existing walls, hide defects (cracks, crumbling plaster, etc.) and just as a cladding.
• At frame construction- to protect the insulation from wind and precipitation, as well as an element of the carrier system.
• When insulating walls - to protect the insulation from atmospheric phenomena.

In all 3 cases, OSB sheets are attached to the crate. The crate is made of wooden lumber of various sections, depending on the task. Most often, an unplaned coniferous bar of natural moisture with a section of 50 * 50 or 40 * 50 mm is used. Mounting OSB on a metal frame is allowed.

When insulating, the crate is made in increments of a multiple of the width of the insulation minus 20 mm, without insulation - the step is chosen so that the joints of the sheets fall on the bar, several additional racks are added between the joints with a distance between them of at least 600 mm.

When cladding walls, use a moisture-windproof film, following the recommendations of its manufacturer, in particular, the distance between the membrane and the OSB.

How to attach panels to the wall

OSB boards are usually attached to the wall through the crate with self-tapping screws for wood when used in a frame of bars or for metal when attached to a frame made of metal profile. The length of the self-tapping screw should be 25-45 mm.

It is allowed to mount the OSB directly on the wall. To do this, holes are drilled in a sheet cut to size, the sheet is put in place, the wall is drilled in the marked places with a puncher, dowels are inserted and self-tapping screws are tightened. When fastening to a wooden base, the hardware is twisted without pre-drilling.

Fasten the screws in one selected direction, for example, from left to right from bottom to top, otherwise the OSB sheet may bend.

How to decorate from osb outside beautifully

OSB has a rather interesting texture, which leaves many options for finishing. At the same time, it must be remembered that OSB is 90% wood, so the material is subject to the same hazards as wood. Fungus, mold can appear on the plates, they are prone to rotting to a small extent, the resin can be destroyed under the influence of sunlight, the ends of the panels absorb moisture.

OSB-plate is treated with wood compounds for outdoor use. The composition must provide protection from ultraviolet radiation. To preserve the color and texture, the surface is covered with colorless varnish and antiseptic impregnations, to give woody shades - decorative antiseptics, for painting in various colors - facade paints for wood.

For getting smooth surface OSB walls are plastered and puttied. Before applying the plaster, the surface of the slab must be protected from moisture with special primers or glassine, then the plaster mesh is fixed and plastered. Drawing is possible decorative plaster or painting.

Also, OSB walls can be covered with any type of siding or facade panels, block house, clapboard, etc.

OSB material for interior work

OSB indoors is used for cladding walls, ceilings, for subflooring, as a structural material in the manufacture of built-in furniture, to create decorative elements, boxes, technological cabinets. AT frame housing construction internal wall cladding OSB increases the strength of the structure.

Work progress

OSB wall cladding consists of the following steps:

• Markup.
• Sheathing device.
• Laying heat and sound insulation, if provided by the project.
• Fastening solid sheets of OSB.
• Sawing OSB to size.
• Fastening the rest of the sheets.

Tools

For sheathing OSB walls you will need:

• Hacksaw, circular saw or jigsaw for cutting material.
• Screwdriver.
• Level.
• Marking tool (tape measure, square, pencil).
• Perforator for sheathing brick walls.
• Chisel.

Interior finishing options

The unusual structure of the OSB allows you to create a rather attractive interior. Tiles can be used without finishing, but it is better to varnish them to improve operational properties. OSB can be painted with wood paints, treated with decorative impregnations for wood. To obtain a smooth surface, the panels need to be puttied with wood putties, after which they can be painted or wallpapered.

How to make a crate for osb

When constructing a crate from bars, a bar is first fixed around the perimeter, then vertical racks are installed in increments of 406 mm with a sheet width of 1220 mm and 416 mm with a sheet width of 1250. If you need to join the sheets in height, a horizontal bar is attached at the junction.

The bars are attached to the wall in 2 ways:

1. Directly through the bar. When attaching to concrete, brick, cinder block and aerated concrete walls, holes are drilled in the bars along the diameter of the dowel in increments of 300-400 mm, the bar is attached to the wall, holes are drilled through the prepared holes with a perforator in the wall, dowels are inserted and screws are screwed in or anchors are used. It is more convenient to first fix the bar along the edges, after which you can not hold it and calmly fasten it at the other designated points. When attached to wooden walls the bar is attracted with self-tapping screws without drilling holes. Self-tapping screws are better to use "white" or "yellow", because. with excessive effort, the “black” hat breaks off and it is very difficult to remove such a self-tapping screw. To adjust the frame vertically, wood linings are used.
2. On galvanized corners or U-shaped fixing profiles. In this case, the position of the bars is first marked, fasteners are installed according to this markup, then the bar is attached with self-tapping screws.

When using a metal profile for the frame, a guide profile is attached around the perimeter, and a rack profile on the plane. The profile is fixed to the wall on special suspensions.

Racks and rails on the walls must be strictly vertical!

Is a frame crate with OSB sheathing inside mandatory?

OSB boards can be mounted directly on the wall, but it is better to use a crate. This will allow you to correct the slope or curvature of the wall, lay mineral wool to improve heat and sound insulation. Also, the crate creates an air cushion, so that the space between the wall and the OSB-plate is ventilated.

Installation of OSB boards

OSB is fixed with the long side oriented vertically to reduce the number of horizontal joints. When attaching the first sheet, you should control its level position, otherwise cracks may appear in the corners of the walls. Otherwise, the fastening rules are the same as for outdoor work.

What should be the thickness

OSB comes in different thicknesses: 6, 8, 9, 10, 12, 15, 18, 22, 25 mm.
Sheets with a thickness of 6 and 8 mm are used for sheathing ceilings and structures that are not subject to mechanical stress. OSB-plates with a thickness of 6 mm can be used for curved surfaces with a large radius of curvature.

Plates with a thickness of 9-12 mm are the main sheathing material for facing walls and ceilings both outside and inside the premises, for the construction of a continuous crate under the roof.

Material with a thickness of 18 mm or more is used for the manufacture of furniture, load-bearing structures and subfloors.

Work examples

OSB sheathed loft

OSB built-in shelving

OSB seating area

OSB putty

Operation of finishing from OSB: features

Walls made of OSB boards do not require any special care, it is enough to follow the rules common to wooden surfaces e.g. avoid prolonged exposure to moisture.

OSB is a modern high-tech material, with correct installation able to last for many years.

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