Cement particle board application for flooring. DSP fastening

The use of cement particle boards for floor leveling is due to the strength, environmental friendliness and low price of this material. DSP contains only natural materials based on mineral binders, so the boards are ideal for constructing floors in residential premises. In a cement-bonded particle board, as in fiberboard, OSB or chipboard, the main component is wood chips. In addition, there is Portland cement, water and special additives. This material is perfect replacement GVL, OSB and chipboard and is suitable for dry floor screeding.

Production of CBPB

Cement particle boards - comparatively new material. Its production takes place in several stages:

1. A solution based on water with the addition of salts, liquid glass and aluminum is poured into the mixing container.
2. Then pour in the shavings for mineralization in the prepared solution. By the way, shavings are also used in chipboard, fiberboard and OSB.
3. After this, cement is poured and water is added. The composition is thoroughly mixed.
4. The finished mixture is fed under a press, where it takes the form of a smooth cast slab.

Characteristics of cement bonded particle boards

The material obtained during pressing combines the best qualities of gypsum fiber board, OSB, chipboard and fiberboard, namely:

• The multilayer structure makes it possible to achieve high strength of the material, which makes DSP similar to OSB. The strength of these boards is much higher than that of GVL.
• Smooth and smooth surface the slabs do not require additional leveling before installation flooring. This quality of cement boards is very similar to chipboard, OSB and GVL.
• The environmental friendliness of the material allows it to be used for any interior work. However, unlike OSB and chipboard, it has a more affordable price.
• DSP is characterized by low flammability. This is its main advantage over fiberboard, chipboard and OSB.
• The material is resistant to temperature changes and aggressive environments. This feature makes it performance higher than that of fibreboard, chipboard and gypsum fiber board.
• Since cement boards have an alkaline environment, they are not susceptible to rotting and damage by insects, which cannot be said about fiberboard and chipboard.
• The boards are highly moisture resistant. That's why they are much better than fiberboard and drywall, which are not recommended for use in places with high humidity.
• The noise absorption coefficient of cement boards is much higher than that of plasterboard and fiberboard.
• DSPs have an affordable price due to their simple production technology, which cannot be said about OSB.
• The frost resistance of cement sheets, like OSB, allows installation in houses without heating. This quality of the material is much superior to gypsum fiber board and drywall.
• According to the soundproofing characteristics of the slab better than GVL and OSB.

Although DSP significantly exceeds plasterboard and other similar materials in its technical characteristics, it still has disadvantages. These include the following:

• • The board weighs more than OSB because it contains cement. This creates installation difficulties compared to lighter OSB boards.
  • When cutting CBPB, a lot of dust is generated. In this way, it is very similar to drywall, but, unlike cement boards, it can be cut, rather than sawed. In this case, OSB is superior in performance to cement material, since it does not produce dust when cutting.

Using DSP

The use of cement slabs is justified when installing a subfloor under any floor covering that requires a perfectly flat base, for example, under ceramic tiles, laminate, carpet, linoleum.

Compared to cement-sand screed or self-leveling CBPB compositions can significantly save on leveling the base for laying the face layer. Pressed cement sheet can be laid on concrete and wooden bases.

When installing a dry screed, using DSP instead of OSB or GVLV will allow you to save money and get an equally strong and durable subfloor. In addition, cement boards have high moisture resistance, so they can even be used for floors in bathrooms and toilets, which cannot be said about plasterboard.

With the help of cement slabs it is convenient to create not only floor leveling, but also a heated system. In this case, you will receive not only a flat base, but also a protective screen against heat leakage through concrete plates ceilings In this respect, DSP is far superior to OSB, which is not suitable for use in heated floors.

Pressed cement sheets can be used to install floors along joists. Their strength is no lower than that of OSB, which I often use as a subfloor on joists. This material is suitable not only for installing and leveling the floor. Cement particle boards can be used for interior decoration of room walls instead of plasterboard.

Choosing cement sheets for the floor

DSPs can have different dimensions depending on the thickness of the material. Slabs with a thickness of 10 to 40 mm are suitable for leveling floors. In this case, the choice of material is made depending on the curvature and features of the base.

High-quality cement sheets, which are suitable for leveling the floor and have technical characteristics no worse than OSB, must meet the following requirements:

• the density of the material should not be more than 1300 kg/m²;
• humidity can be in the range of 6-12%;
• swelling of the slab under the influence of water during the day should be no more than 2%;
• permissible moisture absorption is 16%;
• tensile strength – 0.4 MPa;
• permissible surface roughness is 80 microns.

Leveling the floor

For leveling concrete or wooden floor you can use cement sheets 1-1.5 cm thick. If the base of the floor is relatively flat, then the slabs can be glued directly onto it without lathing with timber.

Leveling concrete and wooden floors using DSP is done in the same way as using OSB. The work is carried out in this order:

1. We lay out the slabs on the floor of the room. We number all the sheets, and mark the layout on the floor with chalk. We cut the edge slabs to the required size.

Tip: it is convenient to use DSP for cutting hacksaw blade. As a result, you will not have a lot of dust, and the edge of the slab will be smooth.

1. Now we remove all the sheets from the floor.
2. Using a notched trowel, apply the adhesive composition to the base of the floor (see video).
3. We lay the cement-bonded particle board and press it to the base.
4. The next sheet must be glued with a gap of 0.5 cm between adjacent elements. It is needed to compensate for the deformation expansion of the material.
5. We seal the gaps between the sheets with adhesive.
6. Once the glue has set, you can begin laying the face covering.

Video on how to lay cement slabs on a concrete or wooden base:

Before laying particle boards, as well as before laying OSB on the floor, the base of the wooden floor must be prepared. To do this, rotten and damaged boards are replaced with new ones. The cracks are sealed with putty. Laying slabs on a wooden floor is done in the same way. Before gluing cement bonded particle boards to a wooden floor, its surface should be treated with a primer. This will improve the adhesion of the adhesive to the base.

Dry screed

If cement slabs can be glued to a relatively flat base, then to level a surface with a height difference of more than 6 cm, it is better to use a dry screed. Using DSP instead of OSB in this design will significantly save money. In this case, the chip sheets are laid on granular aggregate and guide beams. Metal profiles for drywall or wooden blocks can be used as guides. Since it is more convenient to fasten the DSP with self-tapping screws, it is better to take bars of a suitable cross-section for the guides. Optimal height dry screed – 7-10 cm depending on the curvature of the base.

The main advantages of dry screed are its lightness and excellent heat and sound insulating qualities. The combination of granular aggregate and cement bonded particle boards improves the performance characteristics of the floor. This leveling method is suitable for houses with old, dilapidated floors.

Laying dry screed takes place in several stages:

1. First, the level of the finished floor on the walls of the room is broken down.
2. Then two layers are laid on the floor insulating material. Usually ordinary polyethylene film is used.
3. Along the perimeter of the room, a damper tape is attached to the walls near the floor.
4. Guide beams are installed. The pitch of the beams is equal to the width of the rule, but not more than 50 cm. The beams are attached to the base using dowels with self-tapping screws and are strictly leveled. The top plane of the beams should be lower than the finished floor level by the height of the floor covering.
5. Bulk material is poured between the guides. Expanded clay sand is most often used. It is compacted and leveled according to the rule along the beams.
6. Next, cement bonded particle boards are laid. The use of this material will improve the heat and sound insulation characteristics of the floor.
7. We attach cement boards to wooden beams self-tapping screws in increments of 10-15 cm.
8. Immediately after this, you can lay the flooring.

Leveling the subfloor for a decorative finishing coating can be done in more than one way. Cement screed for this case is the most labor-intensive and time-consuming process. Often sheets of particleboard are simply laid on the base. This material shows its weak sides both during the process of working with it and in subsequent operation. Chipboard is quite fragile and tends to break at the ends and corners of sheets when cut and fastened. Floors with such a base cannot be tolerated excess humidity, therefore not suitable for the bathroom and kitchen.

Due to its strength, density, environmental friendliness, resistance to moisture, fire, rot, and chemicals, fiberboard is considered one of the best sheet building materials and is an excellent basis for a subfloor.

For those who are already familiar with the relatively new construction product - DSP, the question of choosing a material for the rough base disappears by itself.

Characteristics of cement bonded particle boards

This product is not completely perfect, but it has undeniable advantages that make it increasingly popular among repairmen and builders. If we compare its mechanical strength with chipboard, the result will be 3 times higher. DSP has very high stability to physical influences of any kind, immune to fungal infections and mold formation. These plates do not have the main lack of chipboard– hygroscopicity. The ability to completely withstand a humid environment and critical temperatures, absolute non-flammability and reasonable price allow you to put up with the large weight of cement-bonded particle boards and the rather dusty process of cutting them during work.

The CBPB production technology completely eliminates the formation of voids and internal defects in the slab body. The three-layer structure determines the extraordinary strength of the material, made from small shavings and wood fibers, Portland cement and plasticizers by pressing. The specificity of the composition and production of cement particle boards allows them to be used in a wide variety of areas of construction and repair: from the construction of buildings to interior and exterior decoration of premises. The best option in order to level the floors in a new building or during the construction of a house would be to use laying CBPB by lags. In the process of working with slabs, another advantage of the product will appear: convenient installation, ease of cutting, drilling and fastening.

Preparing for the installation of a DSP coating

Regardless of what type of base the floors will be laid on - reinforced concrete or soil, it must be sufficiently reliable.

In the case of preparing the foundation for a new floor on the first floor of a private building with open ground Initially, the earthen surface is leveled. A bulk cushion of sand and gravel mixture about 20 cm thick is placed on it and compacted very well.

Supports for logs in the form of columns (or strip foundation) can be laid directly on the ground, but an additional layer of hydro- and thermal insulation will not be superfluous. Brick pillars laid out in the shape of a well, reinforcing their interior and filling them with concrete. The distance between the supports can vary from 50 cm to 1 m and depends on the size of the cross-section of the timber from which the logs will be made. Then waterproofing is attached to the supports.

The concrete base is checked for deviations in the horizontal level. If the values ​​do not exceed 3-4 cm, then the floor is considered suitable for further work, and minor differences are eliminated by placing compensating pads under the joists. If the surface is seriously uneven, it is better not to save time and money, but to make a cement screed. Otherwise, this will lead to disruption of the stability of the subfloor and its premature repair and replacement of the decorative coating.

To install floor logs made of CBPB, you must use dry and treated antiseptic beams with a cross section of 100x50 mm or 150x100 mm.

All damage to the concrete base in the form of cracks and holes must be puttied or sealed. cement mortar. Waterproofing can be done by laying a thick polyethylene film with a slight overlap from the floor to the walls.

In work on the device rough coating from cement particle boards you will need:

• wooden beam with a section of 150x100 or 100x50 mm;
• antiseptic solution for wood;
• hacksaw with fine teeth;
• waterproofing;
• insulation;
• nylon fishing line;
• ruler, felt-tip pen;
• dowel-nails;
• self-tapping screws;
• drill;
• grinding machine;
• leveling putty.

Laying CBPB on logs

There are 2 requirements for the timber: it must be well dried and must be treated with an antiseptic to prevent putrefactive processes and protect against mold and mildew. Instead of special means You can use machine oil treatment, which has 2 advantages: low price and absence of foreign odor. If CSP floors are installed on a cement screed, then the section of the timber can be reduced to 50x50 so as not to take away usable space near the premises.

It is important to maintain a strict horizontal level when installing joists. The first beams are mounted in two opposite walls, and a fishing line is pulled between them. The logs are stuffed at a distance of 40-50 cm, which is most suitable for installing sheet metal particle board materials. Then, with the same step, the ribs for the transverse sheathing are attached. Fixation occurs using self-tapping screws or dowel nails, and for strength, small pieces of plywood are laid between the concrete and the timber. After this, you can begin installing the insulation. For this it is possible to use any type of insulation: from foam plastic and foil-clad polypropylene to mineral wool and traffic jams.

The floors begin to be laid on cement bonded particle board joists, distributing the sheets around the perimeter of the room. The elements to be trimmed are marked with a felt-tip pen using a ruler. Cutting DSP sheets can be done with a grinder, but also with the help hand hacksaw they are divided into parts quite simply. A hacksaw blade makes a furrow along the line of the markings made, and part of the slab is easily broken off in in the right place when pressed.

The floors along the joists are laid from DSP with obligatory spacing at the seams. The plates are attached to wooden beam self-tapping screws, and the gap between them is subsequently closed with putty or tile adhesive. Often, bumps form at the joints of the slabs, which subsequently have a bad effect on floors such as linoleum or cork covering: Unevenness appears through the flexible surface. These defects can be eliminated by sanding and filling individual areas of the floor. Upper layer It is advisable to treat it with a composition with waterproofing properties, especially if the humidity in the room is above normal limits.

The use of cement bonded particle boards is widespread in both professional field construction, and private. The reason for this is the availability of material suitable for various conditions characteristics and convenient operation. In addition, natural ingredients provide environmental safety. DSP board for flooring, the use of which makes it best choice for the construction of residential premises.

Cement- particle board consists mainly of cement - its share in the composition reaches 65%, wood shavings account for 25%, the rest is taken up by water and various additives, for example, liquid glass. The production of CBPB occurs using special equipment - industrial mixing devices, according to the following system:

• A solution of liquid glass and water with the addition of aluminum and mineral salts is mixed.
• Simultaneously with the mixing process, wood chips are gradually added to the mixture.
• Another portion of water is added and cement begins to be mixed into the mixture.
• The thick composition is mixed until completely homogeneous, after which it enters special machines for pressing.

The hardened slab is distinguished by a smooth surface, a high degree of strength, and durability - this makes it ideal material for work on leveling indoor floors.

Characteristics and features of the material

The dimensions of the DSP may vary depending on the purpose; most often they use standard slabs 2.7X1.2m, thickness varies from 1cm to 4cm. The main properties of cement bonded particle boards are as follows:

• high density, almost complete absence of swelling from water;
• high degree of strength - the slabs have a hard surface, a homogeneous composition prevents the risk of delamination;
• resistance to significant temperature changes;
• fire resistance - the cement-based composition ensures fire safety;
• frost resistance - this coating is suitable for country houses which are closed for the winter and left without heating;
• the cement in the composition prevents rotting, the chipboards are not susceptible to mold, mildew, and do not attract insects and rodents;
• high levels of noise insulation;
• CSP boards retain heat well;
• not susceptible chemical exposure;
• versatility - suitable for indoor and outdoor use;
• environmental friendliness - a very small component of chemical elements in the composition makes it safe for human health and for environment;
• simple production ensures an affordable cost of the material;
• provide a wide range of options for further design of the room - chipboard is a universal substrate suitable for floor coverings various types- linoleum, laminate, parquet, wooden and self-leveling floors.

The disadvantages of CBPB include the significant weight of the slabs themselves, especially when they are thick. Also, cement slabs generate a lot of dust during processing - this must be taken into account when grinding the surface or cutting slabs.

Features of application and correct choice

Production conditions allow us to produce slabs of any thickness, suitable for various types of construction tasks. DSPs are widely used not only as flooring, but also for cladding building facades, arranging internal floors and partitions, and finishing premises. The main area of ​​​​application of DSP is the replacement of labor-intensive and expensive execution cement screed, which has a beneficial effect on the family budget.

The closest analogue of cement-bonded particle boards is fiberboard. This material is also made on the basis wood shavings, which is filled with Portland cement. This method produces a larger amount of chips in the composition, which has a positive effect on the lightness of the slab and its cost, but the strength of a CP-slab of the same thickness will be much higher. In addition, CSPs are much better suited for outdoor work and operation in difficult conditions.

When choosing a csp board, the degree of unevenness of the base is taken into account. For rough leveling, the largest slabs in thickness are taken, and they must be installed under them. wooden sheathing from thick beams - this will help smooth out large differences in height. If an existing concrete screed and the differences are insignificant, you can choose thin slabs and glue them to the base.

The procedure for leveling the floor

The screed device made of slabs does not require any special tools. To trim the slabs, you can use a hacksaw blade, but you must not forget about dust protection; it is better to wear a respirator and protective plastic glasses. The work procedure is carried out according to the following scheme:

• Carefully measure the room and draw up a layout drawing, taking into account the dimensions of the slabs and the area of ​​the given area.
• In accordance with the diagram, the slabs are cut and numbered to facilitate further work - for this they will have to be laid out on the floor in accordance with the drawing.
• After everything has been verified, the slabs are removed from the floor and the base is prepared - it is cleaned of debris and dust, after which the adhesive is applied. If the base is a wooden floor, it must first be primed and dried.
• When everything is ready, begin laying the slabs according to the drawing, leaving a small gap between them (at least 5mm). The gap is necessary in case of deformation and expansion due to high humidity.
• To install the slab, just press it firmly to the floor.
• Further work depend on the properties of the adhesive composition - it is recommended to apply the finishing coating after the glue has completely dried.

Cement particle boards are easy to install, but due to their significant weight, it will not be possible to install without outside help.

Dry screed made of cement bonded particle boards

This type of installation is used when there are noticeable differences in the height of the base. In this case, you cannot do without a leveling sheathing made of bars or metal profiles. The space between the base and the slabs is filled bulk material, for example, fine-grained expanded clay or sand. Work order:

• By using building level height differences are verified, the mark at which the layer of slabs will be located is calculated.
• A drawing of the sheathing is made taking into account the difference in the thickness of the bars, which will hide the unevenness.

• Waterproofing is laid on the surface of the base - most often a construction polyethylene film is used, which must be laid in at least two layers.
• A sheathing of guides according to the drawing is mounted on the floor. The bars are fastened together with self-tapping screws; the distance between the beams should not exceed half a meter.

There are often cases when there are no large differences in height, but it is necessary to perform a rough leveling of the floor. In this case, dry screed is also often done, but without using guides. The slabs are laid on a layer of expanded clay or sand, in two layers, so that there is displacement of the joints. The plates are fastened together with self-tapping screws or adhesive.

Dry screed ensures the leveling of difficult floors, while the lack of sealing prevents the formation of condensation. Due to the light weight of this coating, it is perfect option for old houses where the condition of the floors does not allow the installation of a full-fledged cement screed.

Conclusion

The choice of CSP boards ensures quick and high-quality alignment foundations of any complexity and degree of unevenness. Usage inexpensive materials And easy installation will save significant money. The base made of cement bonded particle boards is universal and fits perfectly under any further coverage- under tiles, parquet, self-leveling floors. It can also be simply painted and left untreated - for example, at industrial enterprises.

Due to their properties, CSP boards have a wide range of applications - from interior decoration residential buildings, production premises, before installing coverings in outdoor areas (on terraces, in gazebos). The coating is characterized by a high degree of reliability and durability - if all operating rules are followed, cement particle boards will last at least fifty years.

Every year, new building materials appear on the shelves of construction stores, which not only have more advanced characteristics than their predecessors, but are also easy to install. One of these materials is cement bonded particle board, which has a fairly wide range of applications.

But before we consider the features of installation work, we will answer the question of what DSP is, what it is made of, and what advantages it has.

Manufacturing

Wood shavings are used to make cement bonded particle board, cement composition, water, aluminum salts, chemical substances. If we consider the percentage of components included in the material, then the basis of the material is the cement composition (65%).

Wood shavings are used in different fractions, and they make up 25% of this building material. Water and chemical additives the composition of the material includes 8.5 and 2.5%, respectively.

Wood shavings are mineralized in special compounds. Then, water and cement composition are added. This mass is poured onto a container. At the same time, a multilayer structure is already formed here. Inside the slab there are wooden shavings with a large fraction.

Outside this core there are fine chips. To obtain monolithic slab, the material is sent under the press. The output is a monolithic product, ready for use. The material obtained in this way does not need to be leveled, which allows them to be used when arranging a dry screed.

In addition to arranging the floor, cement particle board can be used for finishing facades and erecting partitions inside the building, during interior finishing work, and restoration of premises.

Advantages

First of all, it should be noted that DSPs are not afraid of moisture. During the day, the material absorbs no more than 16% of the water on the stove. When water is absorbed, the DSP per day increases by no more than 5%. Therefore, the material has found its use in arranging rooms with high humidity. Moisture resistance allows use this material when installing a water heating system "warm floor".

In addition to resistance to moisture, it should be noted that it is resistant to sudden changes in temperature. For many buyers today, environmental friendliness of the material is important. Considering that the basis of CBPB is cement, sand, water and wood, we can conclude that the material is environmentally friendly.

In addition to the already listed advantages, fire resistance should be noted. The DSP board can withstand fire for 50 minutes.

Two more characteristics that are important for residential premises: low thermal conductivity (0.26 W) and high sound insulation. The floor, in the construction of which CSP boards were used, does not need to be additionally thermally insulated.

And, of course, it is worth noting the high strength of the material. It can be installed both vertically and horizontally.

Arrangement of the floor using DSP

In addition to the cement bonded particle boards themselves, you must first prepare construction tool. Namely:

• a tool for cutting slabs (you can use a regular hacksaw);
• self-tapping screws for fastening plates;
• tamping roller (if work is carried out in a frame house);
• putty knife;
• picking blade (if we are talking about a wooden base).

It is also advisable to arm yourself with a screwdriver, the use of which will greatly simplify installation work.

The building materials you will need are cement particle board itself, mastic, primer and crushed stone.

Work on arranging the floor begins with preparing the base. If we are talking about a frame house with soil underneath, then you will have to start by arranging a cushion under the DSP. This pillow is made from crushed stone.

Using a pick-up shovel, you need to remove the top loose layer of soil and form a shallow hole for a bed of gravel. It is needed to insulate the floor in the house and protect it from moisture. A layer of crushed stone is placed in the prepared pit. It needs to be compacted well using a compacting roller.

If the rough base is concrete, then the DSP is laid either on a special substrate or on logs. When it comes to arrangement non-residential premises, then there is no point in spending money and time on installing logs. If the work is carried out in a residential area, then it is better to lay cement particle board on the logs.

When laying cement-bonded particle boards, you need to ensure that they fit tightly to each other. There should be no gaps or cracks. It is advisable to choose a material whose thickness exceeds 4 cm. The smaller the thickness of the slab, the lower its insulating properties.

If the slabs are laid on joists, then the voids between the joists can be filled with heat-insulating material. It is better to opt for loose thermal insulation. Rolled materials will have to be cut. At the same time, laying them in such a way that no voids are formed will be quite difficult.

As a last resort, you can combine rolled and bulk thermal insulation materials. It is worth using thermal insulation that is resistant to moisture. Otherwise, you will also have to deal with waterproofing, which will lead to higher installation costs.

If installation was carried out on a substrate, then thermal insulation material can be laid over cement bonded particle boards. Here it is better to use rolled materials, which must first be cut into strips of the required length. The joints of these strips are taped with adhesive tape. This is done so that during further installation the thermal insulation does not move or become deformed.

After laying the cement bonded particle boards, you can proceed to laying the decorative flooring. If you plan to lay a wooden floor, you will have to install logs on top of the DSP again. When installing joists, you must use a building level.

Otherwise, the base will be uneven. If necessary, trimmings can be placed under the joists. wooden planks, special wedges, pieces of drywall or cement-bonded particle boards themselves, etc.

If, when installing a wooden floor, you use solid boards, then you need to opt for a thick cement bonded particle board that will withstand high loads. If ceramic tiles are used as a floor covering, then it is enough to use cement-bonded particle boards, the thickness of which is 1.6 cm. But before you start laying ceramic tiles The surface of cement particle boards must be treated with a primer.

To increase adhesion, you can add concrete contact to the primer. Or you can separately apply a layer of concrete contact on top of the soil. Subsequent work can only begin after the soil has dried. Experts recommend installing a reinforcing mesh on the floor before applying the tile adhesive. This can be conveniently done using construction stapler. But in this case, the consumption of adhesive composition will increase significantly, which will lead to an increase in the cost of installation work.

As for laminated boards, linoleum, carpet or parquet, experts recommend using slabs whose thickness is 2 cm. You can lay cement-bonded particle boards in 2 layers. In this case, it is advisable to use material with a thickness of 1.6 cm.

The use of cement bonded particle boards greatly simplifies installation work. In addition, the material is highly durable and resistant to damage. various kinds. This made it possible to use it in rooms with high humidity. Cement particle board can be used for both interior and exterior work. They are indispensable when arranging a dry screed or roofing a house.

Material available on the market different thicknesses. Thicker slabs are suitable for constructing floors in private homes, and thin sheets can be used for arranging floors in apartments.

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