How to insulate the floors in a wooden house from below. Technology and features of floor insulation from below in a wooden house

One of the most serious problems living in a country house, especially if it is made of wood, is. Ensuring a comfortable and cozy stay will allow the insulation of the floor in a wooden house from below, which is carried out using different materials and different technologies. Read more about the insulation of a house made of wood and will be discussed in this article.

Drafts in combination with a cool floor do not bring positive emotions, in addition, they badly affect health. Therefore, there is no point in arguing about the need for thermal insulation in the house. Insulation of the floor from the bottom is a mandatory and inevitable measure, which over time will cover all costs.

The process of thermal insulation can be conditionally divided into several stages:

dismantling of flooring;
installation of the rough floor;
laying a layer of thermal insulation;
vapor barrier installation;
installation of the final floor.

A similar scheme is suitable for cases when a wooden house is restored during the repair. But if the house is built from scratch, then all of the above steps are carried out at the construction stage.

When insulation from below is required

There are several main reasons why thermal protection of a wooden house is performed from below. These include:

the need to reduce the height of the room;
protection of the floor and the entire coating against freezing;
the movement of the dew point, thereby avoiding the process of decay.

During repair work in a private house, some difficulties often arise that are directly related to the warming of the bottom. Consider the most common of them:

more reliable fixing of heat-insulating material is required;
the presence of a low subfloor greatly complicates the work;
floor insulation from below contributes to quick fatigue of workers, which greatly delays the process;
a variety of types of insulation is not very large.

Insulation of the floor is a rather complicated process that requires preparation. First of all, before starting repair work, it is necessary to determine the choice of insulation.

Material selection

There are several basic criteria by which to choose a heater. These include:

resistance to rodents with increased humidity;
material durability;
installation complexity;
financial possibilities of the owner of the house (some materials are not cheap).

Note! When insulating the floor in a country house, where the owners are quite rare, it is important to choose materials that are resistant to different types of rodents. It is mice in combination with high humidity that are the main causes of the destruction of wooden floors.

Table. Overview of insulation of a wooden floor.

Name of material, photo	Description
	Represents small granules with a porous structure. Expanded clay perfectly retains heat, and small rodents and harmful insects are not found in it. The optimal thickness of the expanded clay layer is 20-30 cm.
	Quite light and easy to install material used for warming houses and apartments. The foam is moisture resistant, but is afraid of rodents that quickly destroy it.
	One of the cheapest heaters, which you can buy without problems at the nearest wood processing enterprise. Wood chips actively retain heat, but are not moisture resistant.
	Excellent material for warming houses. Slag needs waterproofing, which greatly complicates the installation process. But on the other hand, slag is a durable material.
	Inexpensive heat-insulating material that not only retains heat in the house, but also drowns out sounds. Among the disadvantages of glass wool, it is worth highlighting the tendency of the material to shrink over time.
	Another type of insulation with low thermal conductivity. A special installation is required for the installation of ecowool, since it is quite difficult to manually blow it into the underground space.

Expanded vermiculite can also be used as a loose insulation for the floor. This is a natural material with a granular structure. Vermiculite is light and has high heat and sound insulation properties. In addition to construction, vermiculite is actively used in the country house.

The company is considered the market leader in the production of mineral wool. The manufacturer has a wide selection of products.

environmental friendliness;
fire safety;
soundproofing;
price-quality ratio;
long service life;
lack of shrinkage and shedding;
large selection of sizes and packaging options.

during work, personal protective equipment is required.

rockwoll mineral wool

Knauf

Knauf heaters are safe materials produced using innovative technology and natural components.

excellent heat and sound insulating properties;
simple installation;
non-combustible material;
without smell;
resistant to insects and rodents.

high price.

mineral wool Knauf

Issover

Material is supplied in rolls and slabs. The products are manufactured using special technology, which allows them to perfectly cope with the tasks.

simple installation;
affordable price;
a wide range of;
environmentally friendly material;

low resistance to moisture.

mineral wool Isover

Thermal Insulation Methods

Insulation of the floor in a wooden house can be performed by two methods - on the lags and the rough foundation. The first method is used for insulation of wooden or concrete coatings. As a heater, any of the above materials can be used. The entire load is evenly distributed on the surface of the lags, so the strength and density of the material used are not important. When warming the floor along the logs, one should take into account the fact that the height of the room will decrease by about 10 cm due to raising the floor.

The second method requires a stronger and more rigid material as a heater to exclude the possibility of its precipitation under the influence of loads. The role of the rough foundation may be played by wood flooring, concrete screed or densely packed soil. Installation of the insulating layer can be carried out under the floor covering. The result of the work done will depend on the correctness of the actions performed and the quality of the insulation used.

Floor insulation

Below is a step-by-step instruction on warming a wooden floor with a tepofol. This is a unique material made of non-cross-linked foamed polyethylene. It has noise, moisture and heat insulation properties.

Step 1. Expand the roll of insulation and carefully cut it into equal parts, the length of which should correspond to the length of the house. The material is quite easy to cut, so you can cope with it using a conventional clerical knife.

Step 2. Treat the wood used to make various pies and logs with special impregnations. This will increase the fire resistance, moisture resistance and, as a result, the life of the tree.

Step 3. Lay a layer of waterproofing around the entire perimeter of the concrete foundation of the building.

Step 4. Install a wooden strapping beam on the foundation on top of a previously laid layer of waterproofing material. The beam must be securely fixed.

Step 5. After fixing the beam, install special fasteners on it for the subsequent fixation of wooden logs. Elements must be installed at a distance of 60 cm from each other.

Step 6. Install the logs on the finished fasteners, securing them with ordinary screws. The levels of the tie bar and lags must match.

Step 7. Fix special support boards between the lags, using metal corners as fixing elements. Boards are needed for the installation of insulation.

Step 8. Lay previously prepared pieces of insulation across the wooden logs. The material should rest on the sides of the transverse planks and on the tie bar. Lay the material over the entire area of \u200b\u200bthe house, tightly joining the pieces of insulation with each other.

Step 9. Use special dowels to fix the insulation by attaching the material to the surface of the lag.

Step 10. Now fix the laid layer of insulation around the perimeter of the strapping beam. For fixing, use self-tapping screws and a special bar with a thickness of not more than 5 cm.

Step 11. Treat the joints of insulation sheets with a building hair dryer. This will eliminate all available gaps through which cold air could enter the house.

Step 12. Lath over the thermal insulation layer. To do this, fix the small bars along the lag, fixing them every 50-55 cm. To do this, it is advisable to use long screws and screw them in pairs.

Step 13. Fix the floor boards by nailing them to the surface of the bars of the previously made crate. The next stage of work is finishing.

Step 14. The floor heating robot on this can be considered complete. Enjoy the results.

When choosing a heater for a country wooden house, it is necessary to rely not only on the technical indicators of a particular material. Consideration should also be given to the conditions under which the selected insulation will be used. This is the only way to choose the most optimal option. But if your choice is based on two options that are almost the same in price and quality, you should give preference to a more famous brand.

On a note! If the insulation was made by a well-known manufacturer, then the chances that it will last for many years without any complaints will be much greater.

Insulation of the house from the basement

If you have a basement in a private house, you need to take time to warm it. This will not only avoid heat loss, but also prevent the destruction of the house from prolonged exposure to dampness. To perform thermal insulation work, different materials can be used, for example, polystyrene foam or penoizol. Many craftsmen use mineral wool to close the floor of a house.

Before starting repair work, it is necessary to prepare the surface by cleaning it from all kinds of debris and dust. After cleaning, it is desirable to treat the surface with an antiseptic, and then with a primer. Such a sequence will help ensure reliable adhesion of the insulation to the surface, as well as protect it from the process of decay. The process of attaching a heat-insulating material cannot be called complicated, so even a novice will be able to cope with such a task.

It is only necessary to apply a little adhesive to the surface of the insulation, and then press the material for a while on the ceiling. After a few seconds (the exact time is indicated on the packaging from the glue), the insulation can be released - it is securely attached. Repeat the procedure with each of the sheets of thermal insulation material.

Insulation of the floor in a country house made of wood is an important event that allows you to create optimal conditions for living. Only with the use of high-quality heat-insulating material can you provide a warm atmosphere in the house, so you need to approach its choice correctly. Fortunately, the modern market offers a wide range, which differ not only in price or thermal insulation properties, but also in terms of installation method. Therefore, in order not to encounter troubles in the future, when choosing a heater, you must always consult with specialists.

Video - How to insulate a wooden floor

From whatever material the construction of the house is carried out, it is possible to create comfortable living conditions only if thermal insulation works are carried out. Only in this way will the house be warm and cozy. If you decide to take up the insulation of the floor in a wooden house from below, then today it will not be difficult to do this, if you choose the right insulation material, and also do all the work strictly according to plan.

Materials used for floor insulation in a private wooden house from below

Having visited the building materials store, you can see how wide the assortment of the products in question is. Each heat insulator is distinguished by its size, characteristics and installation method. The choice of this or that material depends on the personal wishes of the owner and the characteristics of the flooring.

Mineral wool

Mineral wool is often used to insulate the cold floor from wood. The heat insulator is produced in the form of elastic mats and panels. The process of its installation is carried out in one layer.

Mineral wool insulation

The main advantages of the material are:

high noise and heat insulation indicators;
long term of operation;
resistance to fire and high humidity;
reasonable cost;
safety;
resistance to mechanical and chemical factors.

Polyurethane foam

The material is ideal for insulating the floor from below. Its peculiarity is that it contains pores that are filled with air and gas. Polyurethane foam has a low weight, but it perfectly retains thermal energy. It has maximum resistance to the formation of fungus, mold. It does not give in to decay and influence of acids.

Heater Polyurethane foam for a floor

Polyurethane foam is laid using a special technique, and it is also characterized by excellent adhesion to the surface. With the help of this material, it is possible to warm the floor of various shapes without forming joints. But how do you insulate the front door with your own hands with such material and what material can still be insulated, it is indicated

Styrofoam

This heat insulator for floor insulation from below is considered the most popular. Due to its special structure, a low level of vapor permeability and heat conductivity, fire resistance is achieved. The material is also reliable and resistant to mechanical and chemical factors.

Heater polystyrene for a floor

Polyfoam has a long service life, while it retains its heat-insulating ability. Its main disadvantage is that it absorbs a small amount of liquid, which adversely affects certain properties. But how the floor is insulated in a wooden house from the bottom with foam, it is indicated

Penoplex

Heater penopleks for a floor

The heat insulator is characterized by high reliability, resistance to low temperatures. It will show its thermal insulation qualities for a long time and create reliable protection against penetration of moisture. But how to insulate the floor with penoplex in a wooden house, and how easy it is to do, is indicated

Expanded clay

Thermal insulation of a wooden floor can occur using expanded clay. This is a bulk material characterized by a porous structure. A heat insulator is produced by burning shale or clay in a special furnace.

Expanded clay insulation for floor

Expanded clay is a durable and environmentally friendly material. It is characterized by high rates of sound insulation, resistance to fire and frost. But claydite has one drawback - after a while it becomes too dense due to its own weight and loses its heat-insulating qualities. But how the warm facade insulation is insulated, this will help to understand

Penofol

This material for floor insulation is produced in the form of rolls. Obtained on the basis of foamed polyethylene, which is coated with aluminum foil on top. The thickness of the material is 3-10 mm.

Heater penofol for a floor

Isolon

This heat insulator today enjoys a wide range of applications because of its versatility. Isolon is a polyethylene foam of elastic type, which has a cellular structure, where each cell is of a closed type. It can be obtained in different densities and thicknesses, which once again confirms its versatility.

Insulator for floor

How to make insulation

The most effective and reliable way to install a heat insulator from the bottom of the floor is to lay along the logs - the transverse bars, on which the floor covering will be concentrated.

The process of insulation is not complicated if you follow the following procedure:

Fix the bars on the foundation with a step of 1-1, 2 m.
Fix chipboard or thick plywood on the boards. For fastening, use self-tapping screws. This stage is important for the installation of a thermal insulation layer.
Lay the selected heat insulator on the surface between the bars. The thickness of the stacked layer can be different, so you need to take into account the dimensions of the transverse logs.
Lay a waterproofing layer on top of the insulation. Most often, plastic film is used. This should not always be done, as there are a number of heaters that have an increased level of resistance to moisture.
At the final stage of installation, a wooden coating is installed. This may be old or new material.

Video: floor insulation from the bottom with penofol

On the video, floor insulation in a wooden house from the bottom with penofol:

How to insulate from the basement

Insulating the basement in a private house is extremely necessary. Thanks to this, it will be possible not only to reduce heat loss, but also to protect the house from dampness and destruction in the future. To carry out thermal insulation work, penoizol, polystyrene can be used, but mineral wool can be used to close the floor from the basement. With the help of polystyrene, the floors and walls of the basement are insulated.

The first step is to prepare the surface. And for this, remove all garbage and dirt, walk with an antiseptic and a primer. This will protect the surface from decay, and will also make the adhesion of the material to the surface more durable. Fixing a heat insulator is a simple matter that even a beginner can handle. It is necessary to apply glue to the surface of the heat insulator, and then immediately apply it to the ceiling.

It is also worth paying attention to how it happens.

On the video, floor insulation in a wooden house from the basement:

It will also be useful to learn more about how heat-insulating film is insulated with windows, and how it

Insulation of the floor from below in a private house is a necessary measure to create a comfortable and warm atmosphere. The main thing in this matter is to choose the right insulation material. And although the choice today is very wide, you need to choose the insulation that will be convenient in terms of installation, will suit your operating conditions and will be reliable protection against heat loss.

The problem of heat saving in a private house is especially acute. If you do not take care of the insulation of the building in a timely manner, then you can hardly count on comfortable living. At the same time, a significant part of the heat leaves the house through the floor. Studies show that heat loss of this part of the structure reaches 20%. Such a high percentage is also due to the fact that raw wood, which absorbs moisture from the ground, loses its thermal insulation characteristics and becomes a conductor of cold. Under such conditions, floor insulation in a wooden house from below is the only way to exclude heat loss. In what cases it is recommended to do lower insulation, and how to do this work yourself, we will talk about this in the article.

Insulation of horizontal structures from below is the most time-consuming and expensive method. When choosing this option of thermal insulation, there are certain difficulties:

labor costs increase;
restrictions on the choice of insulation;
more reliable and thorough fastening of the material is required;
work is difficult to carry out in low underground conditions.

Therefore, most often resort to upper insulation of the floor of the log house. This technology is simpler, it consists in laying a rigid thermal insulation under the finish floor covering. However, this method does not guarantee maximum thermal protection, it can be used in the southern regions.

when there is an unheated basement under the floor;
for soundproofing floors between floors;
for warming the floor under a cold attic.

The advantages of bottom insulation

The height of the ceilings remains at the same level, the insulation does not “eat up” the living space.
When insulating from the side of the basement, not only the floor itself is protected from freezing, but also wooden beams and floors of the first floor.
The dew point moves from the inside of the structure to the floor surface, as a result of which the base is protected from evaporation, which eliminates the occurrence of putrefactive processes in the tree.
It is not necessary to use a hard insulation, since interior items and office equipment will not exert pressure on it.

Material requirements

Choosing a heater for thermal insulation of a wooden floor from the bottom, you need to take into account certain requirements for the type of material used:

Weight restrictions. The heat insulator should be light so as not to create additional load on the wooden floors.
Good thermal insulation performance. Such a requirement is imposed on all insulators, regardless of the place of installation, but this condition takes on special significance when warming the underground space of the first floor.
The insulator must have a connected structure. Insulation under the floor cannot be done with loose material. It is advisable to choose a stove insulation with which it is convenient and simple to lay.

The following materials meet the above criteria:

Mineral wool. Of all the known species, it is best to use basalt cotton wool, which is optimal for warming a log house. But it should be noted that mineral wool is prone to accumulate moisture, therefore, high-quality waterproofing is required, especially when floor insulation is done in the bath.
Extruded polystyrene foam. Moisture-resistant material with a homogeneous structure, resistant to fire, has high heat-insulating characteristics. Recognized as one of the best heaters for wooden structures.
Lower. It is a liquid material applied by spraying. But the use of this technology provides for the availability of special equipment, so it will not work to insulate the floor itself. For this work, you will have to attract professionals.

Today, foam has become widespread, due to its low cost and good performance, it is in high demand. However, it has high combustibility, which is why it is not recommended for use in wooden houses. But most importantly, during combustion, the material releases toxic substances that can lead to poisoning.

So, what you can insulate the floor from below, we figured out. Now you have to figure out how to do it yourself.

Instructions for insulation

Thermal insulation of the floor is usually done at the construction stage. To minimize the flow of cold from the outside, before warming the floor, first warm the earth under the house:

One layer of roofing material is laid directly on the ground, the joints between the sheets and the edges are sealed with hot bitumen.
Sand is poured on top of the waterproofing layer with a layer of 5-10 cm, and then expanded clay is laid. The thickness of the insulation should be 30-50 cm.

Regardless of the type of heat insulator, when warming a wooden floor, the layers of the pie are arranged in the following order:

waterproof insulation;
insulation;
vapor barrier layer;
floor structure;
wooden floor.

Work Stages:

If the insulation of the floor structure is carried out in an old wooden house, it is necessary to completely dismantle the floor covering, replace the damaged logs and treat the wooden elements with an antiseptic.
Cranial bars 50x50, which serve as a support for the rough flooring, are attached under the lags.
Boards are laid on the flooring perpendicular to the logs, without fixing. For these purposes, you can also use plywood sheets that are attached to the bottom of the beams.
Draft flooring, along with ceilings, are closed with waterproofing - PVC film or a special moisture-windproof membrane. All canvases are stacked on top of each other and fixed with duct tape. Waterproofing should go on the walls, about 15 cm.
Insulation plates are laid between the beams or foam is blown out of the empty space.
On top of the insulation, a vapor barrier is made, which serves as a protection of the material from steam. The vapor barrier membrane is secured with brackets to the lags.
Counter rails are stuffed along the ceilings, which will create an air gap between the insulation and the upper wooden flooring.
Boards of rough floor or plywood are nailed onto the bars.
On top of the finished base, you can make a screed if you intend to lay ceramic tiles, or lay any floor covering.

Installation of a heater under a concrete floor

Often the floor of the first floor is made of reinforced concrete slabs. Typically, a concrete base is made over the cellar, where homemade workpieces are stored. Warming of such a floor is made from the underground, i.e. from the basement.

Here, the same principle of creating a warming pie is applied as in the previous case. As a heat insulator, in addition to the materials listed above, it is possible to be enclosed in a foil sheath. The reflective coating simultaneously serves as a hydro and vapor barrier.

Penofol, as well as polystyrene boards, can be glued directly to the basement concrete ceiling with mounting adhesive. The joints between the plates are foamed with special foam, and the rolled materials are glued with duct tape.

To lay mineral wool, a wooden or metal frame is required. When using frameless technology, it may be difficult to install the finish ceiling. If an aesthetic ceiling is supposed to be made in the cellar, it is also recommended to install a crate.

Work order:

Mounted frame. In the case of a concrete base, it is better to use a metal profile.
Between the insulation and the ceiling, waterproofing is necessarily laid, since concrete passes moisture, which will accumulate in the heat insulator.
The insulation is installed by surprise in the cells of the frame and covered with a vapor barrier film.
A counter grill is made, on which the finishing lining is attached.

In conclusion

In the insulation of the floor there are many nuances on which the quality and reliability of thermal insulation depends. When choosing a material, it is necessary to take into account the features of the construction of the house, the type of foundation, from which wood the log house is built. This is only a small part of what you need to know when starting to warm the floor in a house made of logs or timber.

All the nuances of the work, the characteristics of the materials and the subtleties of the behavior of a particular tree species are known only to specialists. Therefore, even if at first glance it seems that the thermal insulation of the floor does not present any particular difficulties, it is still better to turn to professionals. All work errors can appear much later, when something will be very difficult to fix, and sometimes impossible.

“Srubov Master” is a company you can trust. We have been decorating wooden houses for ten years. Highly qualified professionals work in our team, and vast experience helps us find solutions even in the most difficult cases.

Leave your applications on the page, there you will learn about other ways to contact us.

Warming the floor in a wooden house from the bottom of the basement is not an easy task. There are several ways to solve it, which will help to implement the recommendations of specialists and those who personally insulated the underground at home. At the same time get rid of dampness: wet floors create discomfort for living.

Why insulate the floor?

At the cottage or in a private house above the unheated basement is always a cold floor. And if there is dampness in the underground, then it is slightly moist. This affects the condition of the materials that make up the bottom floor. If it is wood, rotting processes begin to develop in it, if concrete - damping and delamination. This reduces the life of the building, and after a while it can get emergency status.

The floor and other structural elements of the building are insulated in order to reduce heat loss, as a result of which the costs of heating the premises in the cold season are reduced.

How to insulate the floor from the bottom of the basement?

Insulation of the floor from the basement side is possible in several ways, but all of them imply fixing the heat-insulating material on a previously prepared surface. The floor of the first floor must be protected from moisture, therefore, first of all, waterproofing is made from any suitable materials.

Insulation of the floor above the cold basement is possible with the help of mineral wool or polystyrene. It is not recommended to use materials based on foamed polyethylene (Penofol, Teplofol), as they are not able to fully prevent heat leakage through the lower floor.

The choice of heaters is not an easy task. Mineral wool is sold in rolls and slabs. The latter are easier and more convenient to attach to the lower floor from the basement. The reason is that the plates are stiff, while the rolled fibrous materials are loose. If the basement is dry, slabs will be the best choice for buildings whose floors are made using frame technology or consist of reinforced concrete slabs. Such floors from the basement side are flat and relatively even.

If the ceiling is installed on wooden beams, plate and sheet materials will be much more difficult to fix. They will have to be cut so that there are no gaps at the joints of the canvases. In this case, rolled materials are the best choice, which will allow you to go around the beams without forming gaps. You can also combine loose mineral wool with stiff.

It is recommended to do floor insulation in the basement with a high level of humidity with the help of foam. Minvata in this case is not suitable, since it is a hygroscopic material. Do not rely on the latest offers of manufacturers: plates treated with a moisture-repellent composition, since their end sections remain unprotected. Polyfoam is devoid of this drawback. He will not damp in the basement and will last a long time.

You can fix the insulation on a wooden floor from the bottom in 3 ways:

on the expansion bolt shield nails with a wide round hat ("umbrellas");
mounting the double floor system;
on glue (foam only).

There is another way to warm the basement: the use of spray thermal insulation. This is the most expensive method of protecting walls and floors. The sprayed polyurethane foam (polyurethane foam) has a lot of advantages:

forms a seamless coating, eliminating the occurrence of "cold bridges";
a 5 cm thick layer is sufficient for basement insulation, which corresponds to 10-12 cm of foam according to the degree of thermal insulation;
drawing on any curvilinear surfaces is possible;
for sprayed polyurethane foam does not require hydro and vapor barrier, which allows to reduce the cost of the process of landscaping the basement.

But this method has one drawback: to do the work with your own hands, expensive equipment is required - a foam generator. Or you will have to invite specialists and pay for their services. If the basement area is large, the best choice is to purchase equipment for spraying PPU. To do this, you have to buy:

pump station;
spray gun;
hoses;
cylinders with components that, when mixed, produce polyurethane foam.

An example of the calculation of materials and tools for insulation of a basement with an area of \u200b\u200b36 m² with a layer of polyurethane foam 10 cm thick (required for the northern regions):

equipment PGM-3BN or PGM-5BM;
cylinders with components "A" (210 kg) and "B" (250 kg);
metal capacity of 100 l;
milk flask;
overalls (chemical protection suit).

The market of materials for decoration and repair also offers sprayable thermal insulation in cylinders, which is optimal for landscaping small cellars. 2 brands are popular: POLYNOR and Teplis. Basement insulation with sprayed thermal insulation in cylinders has its advantages:

acquisition of expensive equipment is not required;
simplicity and ease of transportation;
convenience of work;
the ability to insulate floors from the basement on their own, without the help of specialists.

Among the materials suitable for landscaping the basement is foam glass. It was popular in the middle of the last century, but subsequently its production was considered unprofitable. In the 21st century the manufacturing technology of this insulation has been modernized and it is again gaining popularity. Foam glass is made from powder obtained by thorough crushing of glass and volcanic basalt. The resulting mass is heated and subjected to foaming. The output is a porous material capable of retaining heat well.

Strengthening on wooden beams (logs)

The floor in a wooden house is traditionally arranged on the logs. The technology for performing work on wood flooring requires the installation of a waterproofing material, regardless of whether we use polystyrene or mineral wool. As a waterproofing, special membranes, ruberoid, and glassine are used.

Cloths are attached to nails or self-tapping screws, since they will have to be fixed to the basement ceiling. In order for the sheets of waterproofing material to hold firmly on the lower floor, they are fastened using wooden battens or strips of galvanized steel. The second option is preferable.

The insulation is laid below and fixed with a dowel-nails. Then they cover the mineral wool with vapor barrier material: special membranes or plastic wrap. When laying foam, this is not required.

Installation of the "double floor" system is possible. To accomplish this task, the space between the lags is sewn up with boards, OSB sheets, plywood. It is important that the lumber be pre-treated with an antiseptic that prevents decay and the formation of fungus and mold. Insulation is placed in the openings between the lower floor and the casing.

Concrete floor insulation

The insulation materials for floor insulation of the first floor of the floor slab are the same: mineral wool, polystyrene, polyurethane foam. But for waterproofing on concrete, not sheet and roll, but coating materials are used: mastics based on bitumen. Foam insulation will be more profitable, since it does not need to be covered with vapor barrier. If thermal insulation is carried out with mineral wool plates, they can be glued to mastic to concrete, but additional fixing with dowels and nails is also necessary.

Conclusion

Insulation of the floor above the basement is possible with the help of various thermal insulation materials. All landscaping work can be done independently.

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Every owner of a wooden house knows that in order to withstand the harsh Russian winters, winds and cold, it must be properly insulated. Thermal insulation materials must also be used on the walls of the house, on the ceiling and, of course, on the floor. A lot of precious heat can escape through the cold wooden floor. To avoid tangible heating costs and to make the floor warm, you can use different materials. But now, modern high-tech insulation materials that allow the coating to breathe, and at the same time have high thermal insulation properties, are especially popular. Exactly such material is foam or extruded polystyrene foam. In the article, we consider the features of this insulation, find out its advantages and disadvantages, find out how to properly lay it when warming the floor in a wooden house.

Description and features of floor insulation in a wooden house with foam

Penoplex is the collective name for a heat-insulating material. In general, strictly speaking, Penoplex is the name of a company that produces building and finishing materials - by the way, our Russian one. Due to the popularity of their extruded polystyrene foam, this material, even from other manufacturers, is now called penoplex.

Penoplex is made from the same raw materials as the familiar white foam. By the way, the latter can also be used for insulation. However, if the foam is always white, then the foam can be gray, red, and even color. Penoplex took all its advantages from the foam, leaving the disadvantages.

Extruded polystyrene foam is produced by foaming the feedstock. As a result of this processing, the output is a light but solid material penetrated by many tiny air bubbles. Thanks to this air gap, the material has really high heat-insulating performance.

In addition to floor insulation in a wooden house, penoplex can be successfully used for thermal insulation of ceilings, attics, floors, walls.

You will learn about the technology of warming a wooden house outside with mineral wool for siding.

Material advantages polystyrene foam, comparison with polystyrene

We will find out what are the advantages of floor insulation in a wooden house with foam.

This insulation provides reliable protection of the room from the cold. The material has really high and reliable thermal insulation performance. In addition to the fact that the material retains heat well in the house, it also has high soundproofing properties.

Compared to polystyrene foam, polystyrene foam is more durable. Many people know how easy it is to break a fragile foam sheet. With modern penoplex this will not happen.

Due to the fact that it is a solid material, over time it will not sag, exposing sections of the floor. By the way, such an incident often happens when warming with soft materials, for example, mineral wool. Penoplex is resistant to deformation, easily resists compression.

In addition, you may be interested in material about features.

Penoplex is resistant to moisture. This is a really important nuance, as the house can be located in a swampy area or in a flooded area. Mineral wool, for example, will not withstand moisture.

Penopleks is conveniently and simply mounted. No need to wear respirators and protective clothing. The plates of this material are light, if necessary, you can achieve the desired size by simply cutting the plate with a knife. Penoplex easily "gets up" on the glue, while securely fixing.

Penoplex do not gnaw mice, bugs and other insects do not start in it. For an eco-friendly wooden house, such a problem sometimes becomes a direct threat to the preservation of heat, the integrity of the surfaces. For example, mice love to settle in soft mineral wool. But with penoplex this, fortunately, will not happen.

Due to its artificial origin and immunity to moisture, penoplex does not rot at all, does not deteriorate and does not decompose. The material is eco-friendly, completely safe for those living in the house.

The safety of this insulation is manifested in the fact that penoplex does not emit any toxic substances. At work, he, unlike mineral wool, does not "dust", does not cause allergic reactions. In addition, extruded polystyrene is odorless.

Penoplex can be of different types. You can choose a non-combustible variety, which is important for a wooden house.

Characteristics of a heater penopleks.

The material is laid in a rather thin layer, but thanks to its high heat-insulating characteristics and density, this is quite enough. Therefore, penoplex can also be considered a rather economical type of insulation.

If you correctly carry out the installation, and choose a quality foam from a trusted manufacturer, the material is able to serve for a very long time without any loss of its technical characteristics. With careful use, manufacturers guarantee uninterrupted foam service for at least 55 years.

How and how to insulate a brick house from the outside will tell.

Minuses

For balance, it is necessary to find out the disadvantages of warming floors with foam.

The material has a pretty high price. This stops some homeowners. However, we must not forget that the installation of foam does not require a thick layer.

The material is completely artificial. But thanks to this, mice and bugs do not start in penoplex. So it is quite possible to consider this drawback as a virtue.

Penoplex does not withstand too high temperatures, deforming at the same time. But these temperatures are from plus 80 degrees on the one hand and minus 90 degrees on the other. Such differences in life are rare, therefore, we can say that this drawback does not greatly affect the qualitative characteristics of the material.

The material does not tolerate strong mechanical stress. Do not forget that, in fact, these are balls inflated with air or gas, so the foam is quite fragile. Do not jump, run on a laid surface that is not yet protected by a floor covering.

Summary: in comparison with the list of pluses, the disadvantages of the material look completely invisible, so you can safely go to buy this high-quality and durable insulation.

Read also about penoplex insulation of the foundation outside.

How to stack

In a wooden house, the floor is mainly blown due to the fact that the boards dry out over time, and cracks form between them, sometimes quite large. But if the floor is insulated with quality material, then even as a result of the drying of the floor covering, the heat in the house will not be noticeably less. Our recommendations for the competent installation of penoplex when warming the floor in a wooden house.

What is needed

What tools and materials may be needed when insulating the floor with foam.

Roulette, a large line;
Construction flat pencil;
Level. You can - laser.
Stationery knife;
Chisel;
Construction gun for sealant and, in fact, the sealant itself. This material will be needed to carefully fill all the joints and the voids and cracks that formed during the laying process.
A film with vapor and waterproofing properties is required.
Well, actually, the extruded polystyrene foam itself.

You will read all the information about polystyrene adhesive for outdoor use.

It should be noted that wooden floors can be insulated with foam in various ways. The most common and easiest of them is lag insulation.

The result is a really warm floor. But in this case, high-quality waterproofing is necessary.

Work stages

The horizontal surface under the floor must be carefully cleaned and leveled. If you decide to insulate the floors in an already inhabited house, then before carrying out work, it is necessary to dismantle the flooring. If it is still in good condition, then remove it carefully so that after work it is again laid in its place. Well, if you plan to replace the cover, then you can not particularly stand on ceremony, and take off quickly. Check the condition of the subfloor. If it is deformed or has defects, carry out work to strengthen it.

Prepared wooden logs must be positioned and secured so that there is no more than 70 cm of space between them.

The boards on which the penoplex will be laid must be hemmed to the lags or secured to bars specially designed for this purpose.

Before laying the insulation, it is necessary to process the logs and all wooden elements with antiseptic solutions. This precautionary measure will protect the tree from rotting and damage by bugs. After the antiseptic, the treatment with a water-repellent will also be useful.

On a board or plywood, you must first lay out a layer of dense waterproofing filmtherefore, carry out installation work on the waterproofing. Keep in mind that this material is lapped (about 15 cm) to ensure complete tightness and high-quality protection against moisture.

It is possible that it will be useful for you to study the material about.

The scheme of insulation of the floor covering.

The next step is direct laying on wooden boards insulation. When laying out penoplex, be careful not to form gaps and crevices during operation. Accurate laying of material will provide reliable protection against cold.

For additional protection against moisture, you can stretch a plastic film on the surface of the insulation. This technique is of particular importance if the house is located in a marshland and the climate is rainy.

The floor covering is laid on top: laminate flooring, parquet, solid wood, etc.

By the way, similar work can be done in an ordinary apartment. Such insulation is especially relevant if you live in an apartment building on the ground floor.

Penoplex can also be used as an insulator for the "warm floor" system. In this case, it will provide additional protection for the room from blowing and heat loss. In order to lay the material in this case, a concrete screed with floor pipes mounted in it is used.

Video

On the video, how the floor insulation in a wooden house with penoplex occurs:

We examined the features of penoplex, as a heater for floors in a wooden house. It is important that the installation is quite possible to carry out independently and that the foam has truly outstanding performance. Thanks to our recommendations, as well as your own hard work and accuracy, you will be able to provide your country house or cottage with a quality warm floor.