Laying plywood on rough wood floors. Laying plywood on a wooden floor with your own hands: features, technology and recommendations. Choosing plywood for leveling a wooden floor

Often during repairs, dismantling the old wooden covering is not practical, but it is necessary to level the surface for further work. In this case, experts advise simply laying down sheets of plywood, thereby creating the necessary “platform”.

Laying plywood on a wooden floor

Pressed sheets are an excellent material for rough and primary work. They are inexpensive, easy to transport, easy to install and are good at eliminating small differences in floor level. Often they prefer to lay linoleum, parquet boards or laminate on plywood, since it has the following advantages:

• laying sheets significantly reduces time preparatory work before installing the final finishing floor covering;
• prevents rotting of the underside of floor coverings due to good ventilation between the material and the concrete screed;
• a floor lined with plywood prevents premature wear or deformation of linoleum or carpet, extending the life of the decorative coating;
• provides a smooth subfloor;
• plywood sheets are light, hard, durable, resistant to stress and abrasion;
• plywood is flexible enough and does not break during installation;
• has no pungent odor;
• has good sound and heat insulation properties;
• due to the large size of the sheets, the number of joints is minimal;
• high-quality factory grinding prevents slipping of the sheet and materials placed on it.

Popular types of plywood used for renovation

Sheets produced by industry are classified according to various criteria:

• wood used;
• presence and method of impregnation;
• variety;
• number of layers;
• surface treatment;
• moisture resistance.

For repair work When the part of the structure made of plywood is hidden from view, it is recommended to use moisture-resistant plywood of grade II or III. The sheet must be at least 10 mm thick, but the recommended value is 14-22 mm. A thinner one will not cope with the load, and a too thick one will be inconvenient to work with.

The number of layers is not of fundamental importance. If possible, you should purchase sheets sanded on both sides.

1. 1. If possible, the plywood should be dried for 2-3 weeks before starting work. The sheets are dried vertically, at a temperature slightly above room temperature.
   2. After finishing the drying process, it would be useful to treat the plywood with an antiseptic and ventilate thoroughly.

48 hours before the start of work, the material must be brought into the room where it will be installed and laid horizontally. There are two ways to lay plywood.

Method 1. Installation on old wood flooring

When laying plywood on a wooden floor, there are many options for fixing the sheets:

• on self-tapping screws;
• on glue;
• for liquid nails.

Among the adhesive compositions, there is glue for water based, two-component composition, assembly adhesive and boostilate. However, fastening with self-tapping screws is preferable.

Materials and tools

For successful installation plywood sheets The following tools and materials will be required:

• plywood sheets;
• jigsaw;
• level;
• roulette;
• marker;
• self-tapping screws;
• screwdriver;
• substrate;
• construction vacuum cleaner or broom.

You may also need Sander, roller and primer, glue and sealant.

Preliminary preparation and priming of the floor

Installation of plywood on wooden floors is carried out only if the height difference when checking the level is no more than 1 cm. In this case, you will also need a substrate to compensate for unevenness and tape, which will need to be used to glue the joints of the strips of material.

Inspect the condition of the floors. Strengthen creaking and loose floorboards, replace rotten and damp floorboards. Do not try to restore boards that have traces of mold, damage, or have been attacked by rodents. They definitely need to be removed and the room ventilated.

Use a broom to sweep away dust and dirt from the floors. If desired, go over the primer twice to wooden surfaces for better adhesion of materials. And dry the base for at least 16 hours.

Marking and cutting

Plywood sheets are sawn so that the number of joints is minimal, taking into account damping joints of 3-4 mm between sheets and 8-10 mm between plywood and the wall. This will help avoid swelling of the sheets, since during operation, under the influence of microclimate and fluctuations temperature conditions the workpiece will increase in area by several millimeters.

The cutting is done with a jigsaw, while the ends of the workpieces are carefully inspected for delaminations and sanded. On large areas for ease of installation, plywood can be cut into squares of 50x50 or 60x60 cm. This technique will help to more accurately level the surface and eliminate possible installation defects.

The sawn sheets are numbered, and similarly to their numbers on wooden base A schematic arrangement of the workpieces is drawn.

Laying plywood

Installation of blanks has several features.

1. If necessary, a backing is placed on the old wooden covering, and the strips are glued together with tape.
2. The holes for the self-tapping screws are drilled in advance and then countersunk with a drill of a slightly larger diameter.
3. The screw heads are recessed into sheets of plywood.
4. Laying plywood begins with niches, podiums, and ledges. Next, the sheets are arranged from the middle to the edges with a brick shift of the squares relative to each other.
5. Cracks and gaps in the old flooring can be filled with glue, allowed to dry and peeled off.

Upon completion of installation, you should check the quality of the coating, remembering that the ideal gap between the level and the plywood is 2 mm, the maximum is 4 mm.

Method 2. Installation of plywood on joists

A more complex and labor-intensive method of laying plywood material along beams is justified if the height difference is more than 1 cm. Joists can be installed on an old wooden floor only if you are sure that everything is in order under it

Preparatory stage

Old flooring you need to remove dust and debris, paying sufficient attention to the gaps between the floorboards. The most large cracks can be filled silicone sealant or mounting adhesive.

At this time, you should prepare the plywood - you need to saw the material, make markings on a piece of paper and number the squares, taking into account that they will be laid out in bricks.

Installation of logs and plywood sheets

According to the drawing, the plywood squares should be installed. Fastening can be done liquid nails or self-tapping screws; in the latter case, the screw heads must be thoroughly recessed. The holes can be pre-marked and countersunk.

Final processing

Upon completion of laying the materials, the joints of the plywood sheets should be treated with fine-grained sandpaper, this will smooth out all the unevenness and differences of neighboring sheets. After sanding, the entire surface must be coated with several layers of varnish.

1. If a laminate or parquet board will be installed on top of the plywood, then the thickness of the plywood should not be less than the finishing coating.
2. Try not to allow 4 plywood sheets to touch at one point at once.
3. The width of the log step should be 0.5 m from the side of the square.
4. Plywood cannot be used in rooms with high humidity, even if it is a moisture-resistant grade of material.
5. If non-moisture resistant plywood is used in the work, then prerequisite The next stage of work will be laying a layer of waterproofing.
6. The length of the screw should be at least 2.5-3 times the thickness of the plywood.
7. When laying plywood on joists, after sealing the gaps between the boards, the base can be primed and a layer of heat and waterproofing can be applied, and only then the guides can be installed.

It is important to remember that defective plywood sheets cannot be used in the work, even if they are intended to be further covered with decorative materials.

Video - Laying plywood on a wooden floor

Video - How to lay plywood on a wooden floor

Cladding of horizontal bases from wood materials carried out different ways. Laying plywood on a wooden floor allows you to do the work yourself and short term. It's important to choose suitable look products, and also follow all stages of installation on boards.

To do the job correctly and avoid serious problems in the future, you need to take a responsible approach to determining the size of sheet products. In such a situation, it is better not to save too much.

Nuances of choice:

Linoleum and laminate are not afraid of minor deformation movements of the base, so a single-layer flooring can be installed under them; a two-layer scheme is used for laying hard materials such as tiles

On a note! For single-layer installation, it is better to choose a high-class material; defects and warping do not contribute to the creation of a rigid base.

Installation on an old wooden floor

If it is necessary to lay plywood on boards, it is necessary to carry out the work exactly according to the instructions, including several successive steps.

Necessary tool

Devices are prepared in advance. It is taken into account that if the device has replaceable nozzles, then there must be a reserve.

List of tools:

• An electric jigsaw with suitable files or a hand saw.
• Level at least 1 meter long.
• A tape measure and a flat beam (profile), which will serve as a stop when marking.
• Screwdriver or drill with power adjustment and bits.
• Self-tapping screws the right size. The rod should pierce the slab and reliably go deep into the wooden surface.
• Planer and construction knife.
• Stapler.
• Brushes and a set of spatulas.
• Primer and elastic putty.

Installation of plywood does not require particularly expensive tools; as a rule, a minimum set for working with wood is sufficient

Products of the required format and substrate are also selected. It is better to purchase small sheets, this will eliminate unnecessary trimming and ensure quick adjustment, especially if there are several layers. For precise fixation, you will need a suitable type of glue.

Preparing the base

In order for the installation of plywood on the floor to proceed without lengthy adjustments and hitches, as well as to avoid problems in the future, it is necessary to first prepare the surface.

Process technology:

1. Old decorative coating is removed completely, down to the base. If paint was used as finishing, then sagging and flaking fragments are removed.
2. The surface condition is assessed. Deformed parts are replaced with new ones, sagging elements are strengthened. The same procedures are carried out with lags.
3. The presence of mold and mildew is checked. Microorganisms not only destroy wood, but also pose a threat to human health. Infected areas must be removed and adjacent areas treated with a protective compound.
4. Using a plane, protruding fragments are cut off. This will allow the plywood to fit as tightly as possible.
5. The gaps between the boards are covered with elastic putty.
6. The base is coated with a primer with antiseptic additives.
7. The surface is dried.

When installing plywood flooring yourself important part is preparation wooden base, in this case it is necessary to strengthen not only the floor itself, but also the logs

If work is carried out on the ground floor, then the use of a vapor-permeable film may be required. Such a backing under the plywood is necessary for ventilation.

Cut the material yourself

The slabs are cut into pieces of the required size.

Algorithm of actions:

1. A comfortable and level place for work is prepared. The cut is made on a small elevation, which ensures free passage of the tool.
2. An installation diagram is drawn up. To do this, the dimensions of the surface are determined and a laying plan is drawn.
3. According to the parameters, the slab is cut. If the floor is very uneven, it is recommended to cut the sheets into pieces measuring 60 x 60 cm.
4. Trimming is done exactly along the line. When working with a power tool, you need to set the power correctly to prevent chipping.
5. If there are defects on the edges, processing is carried out with a file.
6. All segments are marked according to the drawing.

First, a sketch is created, after which, based on it, the sheet is cut according to required sizes, in order to guarantee avoidance of chips when cutting the material, use a hand-held circular saw

When cutting plywood with external defects, you should minimize the inclusion of problem areas on the edges.

Underlayment flooring

This process is not always necessary, especially when working with wooden coverings, but if necessary, provide ventilation and avoid moisture penetration, a special substrate is used. The procedure is most relevant in a private home.

The film is located around the perimeter of the room without fractures or bubbles. If you need to combine the strips, they must be overlapped and taped. The material is placed close to the walls with a grip of a few millimeters, this will ensure the entire surface is covered. To lay the gasket without displacement, fastening is carried out using a stapler.

Penofol is usually used as a backing for plywood; in addition, you can use a special backing for laying laminate, but, in any case, the material must be vapor-permeable

It is not allowed to carry out work at high surface humidity. To determine the level, a piece of plastic film is laid over an area of ​​at least 100 x 100 cm, the product is pressed well around the edges and left overnight. If condensation forms in the morning, forced drying is required.

Fastening plywood boards

Fixation to wooden floor carried out according to the scheme:

If a perfectly flat base is required, scraping is performed.

Laying on the frame

Plywood floors on joists are formed using the following technology:

• Supporting parts are set with a fixation step of 40–60 cm. It is taken into account that all products must be placed in the same plane.
• The treated slabs must be laid in a checkerboard pattern so that the joints fall on the timber. To fasten the products, wood screws are used. A distance of 15–20 cm is formed between the screws.
• Before fixing the flooring, the logs must be treated with antiseptics and fire retardants.

For flooring in household premises logs can be laid in increments of about half a meter, and for highly loaded rooms, logs are mounted at a distance of 150 - 200 mm

Attention! With a distance between the support beams of up to 40 cm optimal thickness sheet – 12 mm, 60 cm – from 15 mm.

Plywood finished floor

Parquet flooring is used for finishing.

Scheme of work:

Plywood parquet will be distinctive and create a special atmosphere in the room.

With the current variety of building materials, it is difficult to make a choice in favor of one or another option for quickly and fairly effectively leveling the floor, with minimum cost Money. The most common and easiest to use material is plywood. In some cases, when there is a need to create adjustable floors in rooms with a fairly low ceiling height, plywood sheets are the only suitable option. It is known that for the speed of leveling floors, which precedes laying floor tiles, plywood is most often used.

Below are the rules on how to lay plywood sheets, advantages, types of varieties and plenty of other educational information.

This type of material has a number of unconditional advantages that qualitatively distinguish plywood from other leveling methods. Firstly, this is the presence of high-format sheets, which help to increase such qualities as reliability, as well as the strength of the base, and, of course, ease of installation and transportation. Plywood has such characteristics as a high degree of rigidity, strength, durability, and peculiar flexibility, which make this material almost irreplaceable.

– High degree of quality of the surface itself and grinding;
- Absence unpleasant odor, only a direct and light smell of wood is possible;
– Highest degree of moisture resistance. Thanks to this quality, the use of plywood is possible in kitchens, bathrooms, and corridors, where, as is known, moisture accumulation is quite high;
– High level strength and hardness of sheets, given the relatively low weight;
– Cutting, processing and installation of plywood sheets are quite simple. A person without special training will be able to work quite harmoniously with this material;
– Thanks to its flexibility, the plywood sheet can be bent without the formation of various cracks.

What is a plywood sheet?

For a long time it was believed that plywood sheets were weak and rather unreliable as a covering, which could not inspire confidence and could not be used for flooring. But these are the deepest misconceptions. Plywood is construction material, refers to multilayer (the number of layers is often odd, from 3 and above), to improve the qualities of strength and reliability, each subsequent layer is usually laid perpendicular to the wood fibers of the previous layer. An interesting pattern is that both strength and resistance to various loads depend on the number of layers - the thickness of the sheets.

When selecting plywood sheets to cover a wooden floor or concrete base, it is worth noting such characteristics as:

– The number of layers and thickness in one plywood sheet (widely used for flooring, there are sheets with an initial thickness of 12 and 16 millimeters, the number of layers is 9 and 11, respectively);
– Type of surfaces and their quality (polished, unpolished);
– Brand of plywood (it is recommended to use proven and well-proven brands and judge by the criterion of water resistance of the glue);
– Emission class elementary particles, pay attention to the presence of formaldehyde in the composition.

Division into grades of plywood sheets

Today, there are four types of plywood sheets that are used for laying on wooden floors.

The first grade is rightfully considered the best, as it is characterized by the following data: the absence of external defects, but nevertheless a small number of microcracks and chips are allowed, which do not exceed 20 centimeters.

A material that has 5-6% defects, such as minor scratches and small dents, 2 to 3% adhesive residue on the surface, and the composition allows for traces of wood is considered second-class. This type of plywood is very popular when leveling wooden floors.

The third grade is plywood, on the surface of which there are knots (both fused and fallen out) and not very large wormholes.

The fourth grade, accordingly, is the lowest in terms of quality parameters, as it contains a large number of various manufacturing defects. But, despite this, the veneer sizing is very high quality. It should be noted that this variety is the most economical, but cannot in any way be suitable for leveling floors.

From the above, it follows that first-grade plywood will be too expensive, fourth-grade plywood is unacceptable for performing these works, it is more technical and auxiliary. The most correct decision will be when the choice is made on the second grade of plywood sheets, since the ratio of quality and price category here is more than tempting.

There are 4 brands of plywood. The distinctive ability of each is water resistance.

– FB and FOF grades are used in industrial construction, or in structures where there is a need to ensure the highest degree of strength;
– FK and FSF brands are used in a variety of individual construction, for the reconstruction and repair of floors from apartments to country houses.

When choosing plywood both in industrial buildings and in individual construction, you should remember that everything depends on the coating of the sheets and the quality of the glue.

Distinctive features of the brands:

– Sheets of the FK brand have a weak level of moisture resistance, but at the same time, the veneer gluing is very, very strong, thanks to safe adhesive compositions, which are based on urea resin. The use of these sheets is advisable in the manufacture of furniture or for interior finishings premises;
– The FSF brand of plywood sheets is characterized by a high degree of moisture resistance, but it is worth paying attention that the adhesives contain toxins, various types phenol formaldehyde. According to GOSTs, it is allowed to use this brand in residential premises, but use in bathrooms and corridors is recommended, although the final decision remains with the buyer.

Types of plywood sheets and emission classes

It was said above that the surface of plywood is divided into sanded and unsanded. The marking will help you find out which type is in front of you.

– NS – means unpolished regular plywood;
– Ш1 – indicates that grinding was performed only on one side;
– Ш2 – double-sided grinding.

It is mandatory to indicate the emission class, regardless of the type of grinding:

– E1 – the mass of formaldehyde does not exceed 10 milligrams per 100 grams of dry plywood mass;
– E2 – formaldehyde mass from 10 to 29 milligrams per 100 grams of dry wood mass.

Types of wood used in the manufacture of plywood

An interesting fact is that the name of plywood sheets corresponds to the raw materials that were used to make plywood. Birch or conifers trees.
In individual construction, regardless of whether this floor will be the main or rough version, the most common is birch plywood of the FK brand. It has a number of advantages, such as a high degree of thermal insulation properties, impeccable strength, safety and reliability.
While coniferous plywood is more often used for roofing, for leveling floors on balconies, terraces and in basement utility rooms. It is known that resins coniferous trees They are extremely useful and contain many substances that support health, but all the qualities disappear because the veneer is glued together with glue that contains a high degree of formaldehyde resin.

Methods for laying plywood on the floor

After carefully selecting the material, you should familiarize yourself with the tips for correctly laying plywood on the floor.

Laying plywood on a concrete base

Plywood can have any material underneath, but the most common are concrete slabs or cement screeds. This is the easiest installation method.

The work consists of the following stages:

– Cleaning and preparing concrete from debris. After washing the floor, you should wait until it is completely dry. After this they lay plastic film, which must be intact and free from defects. It serves as a waterproofing layer.
– Actually laying the plywood. When laying in solid sheets, you should start from the threshold, since it is the most accessible place.
– The joining of sheets should be done in such a way that the distance between adjacent plates is from 2 to 3 mm, and the near-wall seam should be 10-15 mm.
– Attaching plywood to concrete floor made using self-tapping screws and plastic dowels. They should be twisted in the center of the sheet and around the perimeter.
– If the sheet does not fit, it must be cut into the necessary pieces and laid in the same way.
– It is important to know that all screw heads should not protrude above the level of the plywood surface.

During renovations, it is often necessary to replace the floor. In this case, select suitable covering is not difficult. Before laying upper layer, it is necessary to level the base, since the service life of any floor covering depends on this. Laminate and boards, for example, have interlocking joints and form cracks when laid on a lumpy surface.

In this case, the most favorable option for leveling the base would be plywood. And here, not very experienced repairmen are faced with the question of how to strengthen the plywood onto the base, and with what tools to do this. Before leveling the main floor, you need to assess in advance the condition of the surface and the degree of deformation of its “relief”. Sometimes the subfloor per 1 m² has differences of about 2 mm. Then you can achieve perfect evenness using putty made from wet sawdust mixed with PVA, or by covering the base with acrylic sealant. Old boards are renewed with a plane and laid back. All loose parts are simply nailed or secured with screws. But in order to smooth out significant unevenness, you will need to lay sheet material. Here again, information on how to attach plywood to the floor before finishing is useful.

Working conditions

Before you begin the repair process, you should prepare all the tools that you will need for the job. This list includes:

• perforator;
• hammer;
• notched spatula;
• electric jigsaw;
• roulette;
• drill;
• screwdriver;
• spirit level

To secure the plywood to the base, glue and dowels are used. The adhesive can be solvent-based, water-based, or two-part. What is the difference between these means? In short:

• the water base slows down the drying of the glue and can delay the repair for several days;
• glue, which is based on a solvent, dries very quickly, but has a pungent specific odor;
• two-component adhesive is used most often, especially if communications are laid in the concrete and the screed has not yet dried.

To lay plywood on the floor, you simply need a good screed.

This is where the labor process begins. It doesn’t matter what method (wet or dry) the screed is made, but it must be done with high quality and in perfect horizontal position. In order for the floors to remain in their original form, dry and warm, the following conditions are necessary:

• screed completed according to all rules;
• waterproofing;
• compliance with technological standards when installing thermal insulation;
• the presence of moisture in the base is not more than 1%.

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Mounting Selection

For the base under a parquet floor, it is best to choose material of grade FK 4/4 and higher. A thickness of 1 cm or 1.2 cm is suitable. It is these plywood sheets that have sufficient strength and the necessary flexibility. And this plays an important role, since laminated plywood bears quite a serious load when arranging furniture and when residents walk around. When choosing a material thicker than 1.2 cm, financial resources will be wasted, since its properties are equivalent, but the cost is more expensive. If we take into account the price-quality ratio, then 2nd grade plywood is suitable. When marking on plywood sheets, it is indicated what type they are - sanded or unsanded:

• Ш1 ─ grinding 1 side;
• Ш2 ─ grinding of 2 sides;
• NS ─ without grinding.

Sanded plywood is marked with the free formaldehyde content:

• E1 ─ 100 g of dry plywood mass contains less than 10 ml of formaldehyde;
• E2 ─ 100 g contains 10-30 ml of formaldehyde.

To make the floor perfectly flat, you need to choose a 2nd grade plywood sheet, marked with the marks Ш1, ФК and Е1, the thickness of which is 10-12 mm.

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Cutting and fitting

Plywood consists of several layers, so high humidity Not in the best possible way affects it and soon you can expect delamination. Before you start laying, you need to determine the humidity concrete structure. To do this, during repairs, the worn out top covering is removed, and during construction the ceiling is cleared. Then on concrete slabs lay out a large piece of polyethylene and press it tightly around the edges, leaving the central part free. After 7 days, the film is examined. If no condensation is found on it, then you can safely lay the substrate. If drops of liquid appear on the polyethylene during testing, then the floors must be additionally covered with waterproofing.

When everything is ready to lay plywood, the room is measured and the sheets are cut according to the measurement results. In this case, you need to ensure that the seams between the sheets of plywood are 1 cm, and near the walls they are 1.5-2 cm. The plywood covering should not be allowed to touch the walls. This gap is left in case the coating parameters increase due to heat or humidity. If there is no free space, the floors may simply swell. In addition, the small format of plywood panels has greater stability and strength.

After cutting, check the ends of the workpieces. If they delaminate, they are rejected and new ones are prepared. Then the plywood sheets are laid out on the floor and adjusted to the base. It is very important that 4 sheets do not join in one place. To do this, all blanks need to be laid out using the method brickwork, that is, with a shift.

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Surface primer

Having adjusted the plywood, the sheets of blanks are numbered and a schematic representation of the layout is sketched out. Then the parts are removed and the base is leveled. To do this, remove any remaining mortar, paint, and construction debris. After this, dust is removed. It is better to do this with a special vacuum cleaner, but a simple broom will do. Cannot be carried out wet cleaning, because water will spoil them wooden parts designs.

Now the coating needs to be primed. A primer is required for this. It is prepared from an adhesive composition, diluted with a special solvent. The purpose of the primer is to:

1. Increase the strength of the bonding surface. This is achieved by the primer penetrating into the pores of the concrete base and gluing microscopic dust particles. All this increases the adhesion of plywood, glue and any dissimilar materials.
2. The primer holds the concrete surface together and protects against the formation of cement dust.

If the room has big sizes, then it is produced in sections. In this case, the primer should be applied in parts. Base for plywood covering small rooms primed entirely. In both cases, the primer is applied before laying the plywood sheets.

Leveling the floors before roughing and finishing directly depends on the height and area of ​​the room. But this process is also influenced by several other factors. What kind of flooring will there be, what temperature and humidity range will the floor be in, how much do you plan to spend on Finishing work, what is the attitude of residents towards aggressive adhesives and solutions, etc. All of the above issues make choosing a material for leveling the floor not so simple. Today, home-grown builders and recognized repair masters have tried a lot! Here we will talk about plywood, which is an excellent material for flooring in residential and non-residential premises. Sheets of plywood of different thicknesses and formats are used both for rough finishing before laying laminate, linoleum or parquet, and for finishing floors in cottages, country houses and at home.

How to use plywood

Initially, it may seem that plywood sheets are fragile and cheap. But practice shows that this material is many times superior to MDF, chipboard, OSB, fiberboard and other recyclable materials. And there's no need to wonder difficult question, . The main advantage of plywood lies in the specifics of its production. There is no gluing of the residual mass of wood and a liquid binding substance. Each plywood sheet consists of several layers of working wood. And due to the fact that these layers have multidirectional fibers, the floor is strong and reliable. You can read about what this is in the article.

You can find out how much 1 sheet of moisture-resistant plywood costs from this

Laying a plywood floor aims to achieve three main goals.

1. “Smoothing” uneven surfaces and preparing for final coating.
2. Ensuring the required level of thermal insulation.
3. Protection parquet board from moisture.

Of course, there is also plywood for finishing the floor. But we will not consider this option due to its specificity and low prevalence. The plywood is placed either directly on the floor, or raised above it with the help of logs - special beacon bars.

What are specifications moisture resistant plywood can be found in this

The video shows the thickness of the plywood on the floor:

Methods for laying sheets on the floor

Put on the joists

If the differences in height on the floor are quite significant (from 5-10), then plywood can be laid and attached to special joists. They not only allow you to achieve a perfectly flat floor, but also provide air cushion for thermal insulation and waterproofing, and then it’s easier to select another finishing material.

Logs are used almost everywhere. The only obstacle on this path is the low height of the room, since laying plywood on joists “eats” up to 10 cm of the room’s height.

Manufacturers and prices

When choosing a finishing coating, it is useful to know.

The prices for their products are approximately the same. Therefore, experts recommend, first of all, deciding on the type of plywood sheets that will be used for the flooring.

Leveling the floor with a plywood “underlay” is a common method of dealing with unevenness, cold and operational features of the room. Depending on the tasks used different types plywood and their thickness. If you are just taking a closer look at the material, it is useful to know.

You can see photos of OSB plywood in this

In each specific case, an assessment of the needs for a particular type should be made by a professional.