Creating comfortable conditions in the residential room, you need to strive so that heat when heating is extended evenly throughout the volume. As a rule, following the laws of physics, warm air rises up, while the floor remains the coldest zone. Often the temperature differences on the upper and lower level of the human stay are very significant. This creates discomfort and can cause colds. The uniform distribution of heat, constant outgoing from the bottom, creates the necessary heat exchange. In order for the heating system to work efficiently, thermal insulation is necessary for a warm floor. Today we will conduct a comparative review of various thermal insulation materials.

The warm floor can be used both as an additional heating of the room and making it the main heating system.

Why do you need to isolate the system?

And the truth .. why? Let's figure it out:

• Natural heat losses are reduced through the coldest surface in the room outside or in the ground. Under normal conditions, the magnitude of the heat loss reaches 20% of their total volume.
• The emitted energy is evenly and rationally distributed around the perimeter of heating. It is not consumed for heating overlaps and elements of structures below the heated area.
• Energy is saved on additional heating, the cost of heating is reduced.
• Additional sound insulation is created.
• It is prevented from the earth or basement moisture to the room through the floor covering.

Factors affecting the choice of thermal insulation

There are three main types of "warm floor" systems: water, infrared and electric. And on which of them will be installed, the use of heat-insulating material directly depends. In addition, thermal insulation under the warm floor is selected taking into account the loads acting on the floor covering.

The main characteristics of thermal loss protection materials can be:

• high compressive strength, elasticity;
• a minor degree of deformation when exposed to loads;
• resistance to aggressive media;
• low thermal conductivity;
• high density (for floor insulation, it must be at least 25 kg / m 3);
• minimum moisture absorption.

The correct installation of the layer of heat insulation ensures the preservation of heat engineering characteristics during long-term operation

The main types of heat insulation of the warm floor

Environmentally friendly dense natural rolled insulation. The use area is limited to the limiting height of the premises (when laying the material, the height of the floor raising is 3-4 cm) and the high cost of insulation.

Very important nuance - cork substrate is used only complete with an additional ray-reflective layer

Polypropylene

Polypropylene in the form of extruded plates: sound and thermal insulation coating with a closed cellular structure. Not hygroscopic. Good processing. Withstand temperatures up to 130 ° C. And still use polystyrene foam with a lining in the form of a polypropylene film:

Polystyrene foam

Extruded polystyrene foam 50-100 mm thick: the best thermal insulation for water warm floor. Durable, lightweight, solid, inexpensive material, resistant to sharply negative and high temperatures and retaining its fully properties with long-term operation. This contributes to the air filling of the cellular structure.

The polystyrene foam is not destroyed in an aggressive environment. Does not absorb moisture and does not swell. Resistant to fungal damage, easily collected when laying.

Metallized lavsan film

Such a substrate as a coating of foamed polystyrene creates reliable protection against sex destruction when interacting with an alkaline medium of a cement-sand tie. Aluminum foil, without coating its high-temperature PVC film, is not used due to the instability of the foil layer to corrosion.

The substrate that prevents the heat loss should be stacked throughout the surface to be heated, even if the heating pipes are placed in this place. This is done in order not to disturb the integrity of the surface, ensure the uniformity of the structure, to increase the reliability and strength of the coating

Please note that whatever material is used as thermal insulation, a quality certificate must be issued to it.

Says an expert: conducting tests of various substrates

The right selection of thermal insulation will not only increase the efficiency of using the "warm floor" system, but also will prolong the service life of all its elements, will provide comfort and comfort in your home.

In accordance with the launching technology technology, in its "pie" there must be a thermal insulator with a low thermal conductivity. And the water design is no exception.

Today, manufacturers offer a wide variety of thermal insulation substrates, and a person who does not disassemble in construction is difficult to choose the insulation that meets all the requirements.

Need or no heat insulation for a warm floor

Thermal insulation in the "cake" of warm water plays a huge role, the correct functioning of the entire heating system depends on it. Screed, poured over thermal insulation, turns into a large surface transmitting heat.

The main functions that the heat insulating flooring should perform under warm water floors:

• it is evenly distributed to the heat flows on the heated room, it is especially important when laying water structures, since the configuration of this system is straight and curved pipes, so heat is not evenly distributed;
• prevent the outflow of warm air through overlaps, it serves as a reflective screen, which also makes it possible to save the heat resource;
• act as sound insulation;
• prevent the production of moisture and cold from the bottom - with the design of the structure over the unheated room or on the soil;
• prevent the possibility of forming moldy and fungal bells.

In addition, applying as insulation under the warm water floor, polystyrene foam mats with bobbs, you significantly simplify the process of installation and fixing pipes.

For your information! If the thermal insulation layer is properly selected and laid and laid, the floor cake turns into a closed thermal device, where thermal radiation is distributed evenly, and in the desired direction.

Types of insulation under water warm floor

Selecting the material for the thermal insulator under the warm hydropol, should be repelled from the features and technical indicators of the room, as well as the grounds for which the substrate will be installed.

In the main mass, the thermal insulation material has the same degree of thermal conductivity. But the layer thickness is not rare even in the same room it is required different.

The most common types of thermal insulation used under water warm floor can be attributed to: mineral wool, cork, polystyrene foam, profile mats. This material has various thermal insulation characteristics and properties, and this should be considered when choosing and mounting the floor.

We will get acquainted in detail with each type of material for thermal insulation of the brass construction.

Cork substrate

Cork - expensive product, as it is made of oak bark. Produced in rolls or sheets, but there are no differences in the technical characteristics. The difference is only in size and thickness.

Cork substrate:

• has a low thermal conductivity;
• waterproof;
• eco-friendly;
• hypoallergenne;
• elastic;
• light resistant;
• far-passable;
• resistant to sharp temperature drops;
• not subject to chemical impacts.

The product from the tube is the perfect option for the "water warm floor" system, and if the means allow, it is better to choose it. The thickness of this substrate helps to efficient heat resource savings, which is particularly relevant when installing on the ground.

The cork is not subject to deformation and shrinkage when filling the screed of concrete. She cannot harm insects and rodents, mold and fungus, not worried.

However, it should be noted that the use of corks as a substrate will affect the height of the ceilings, and it will also be necessary to purchase an additional reflective material.

Polystyrene foam

The polystyrene foam is the most common type of thermal insulation under water heating floor, and has a rather democratic price. It provides high-quality protection against water and steam, a high degree of sound insulation, not deformed from the effect of temperature, does not respond to chemicals and resists the formation of mold and fungus.

The thermal insulation consists of a plurality of bubbles placed in the shell. To give the strength of the structure with this substrate, a reinforcing mesh is applied. The simplicity of installation is not important in his demand, even an inexperienced person will cope with its demand. In addition, service life is several decades.

The main minus of polystyrene foam is a fire hazard, so it needs to be isolated with a foil substrate.

The polystyrene foam is several species that differ in production technology and their properties:

1. Extruded polystyrene foam - durable and more qualitatively performs its main function - thermal insulation. It has increased strength, since the particles are tightly linked. But the record pressure is almost zero. Its thickness at least 3 cm. Plates are more often colored.

• Foamed - it is also called foam. It has a small proportion and high degree of steamproof. Not recommended for the insulation of the foundation, as it is collapsed under the influence of moisture. Color usually white. It is produced by an unfashionable way, that is, the structure has cells with air channels.

• Penoplex - its cost is not high. It has good indicators in terms of reflection of thermal flows, therefore it is considered one of the best insulation. When installing, a waterproofing substrate is not required, and the process itself is not complicated, it is available to install with your own hands. Produced in plates of various sizes, the thickness of which ranges from 20 to 100 mm. In the package there are from 4 to 20 sheets - it depends on the thickness of the product.

Main advantages:

• high heat and vaporizolation;
  1. no discharges containing harmful substances;
  2. confronting the effects of microorganisms;
  3. does not miss moisture;
  4. has high strength.

• Profile mats - they are based on expanded polystyrene foam. They are stamped using a special technological method and are covered with a waterproofing film. Plates are high-strength products capable of withstanding mechanical loads. Equipped with protrusions, the pipes of water warm floor are stacked, which facilitates the process of placing the contour. They have side locks - it simplifies installation and minimizes the presence of seams. The model is considered the most profitable, from the point of view of financial investments, during the construction of heating.

Mineral wool

Minvata - fireproof, unlike expanded polystyrene insulation, but also the price is more expensive. It is made in the plates, therefore it is easy to install.

When installing on the aluminum base of a warm floor, this insulation has a high efficiency, even when placed on the soil. In addition, it has good noise and thermal insulation, increased rigidity, resistant to chemicals.

The main minus of the product is contained carcinogenic and toxic substances that are dangerous to human health. In addition, Vata is hygroscopic and vaporural, and when laying in the screed, you need to take care of its protection against moisture and steam secretions.

Roll heat insulation of foamed polyethylene

Polyethylene foam type (foam) is gaining popularity today. Sold in rolls, and has a thickness of 3 to 10 mm. The product is equipped with a foil surface, it reflects heat and allows you to significantly reduce the thickness of the "cake", since there is no need in the installation of additional waterproofing from lavsan or heat insol.

It happens the following types:

1. And - one side has a foil layer;
2. In - foil on both sides;
3. C (self-adhesive) - on one side of the foil, glue is applied to another;
4. "ALP" is one side foil, the second with a special film.

Each of the species is suitable for use under the warm floor, and almost completely copes with the thermal insulation of the device.

Technical indicators of foamed polyethylene and polystyrene are largely similar, thermal conductivity coefficient ranges from 0.037 - 0.049 W / m · ° C.

It is worth saying, and about the ability of the material to absorb water, while there is a decrease in its thermal insulation properties.

In addition, under the influence of a wet screed, in which chemicals are located, the foil aluminum layer comes into disrepair. In the fight against this problem, manufacturers began to produce a product in sheets, having a film coating on top of foil.

The metallized lavsan film is capable of qualitatively protect the screed and sexual coating from the exposure to a pitch. The insulation with an aluminum layer without a coating of thermal exposure is not applied. The positive side of the product in its high degree of heat dissipation.

Important! When laying, the foil side of the product should look up.

What insulation to choose?

As mentioned above, insulation is needed for warm water floor, since without it it will not function effectively. In addition, in the presence of thermal insulation, the system is more economical. It is important not only to know how to properly warm the warm floor, but also how to choose a suitable heat transfer material.

When buying thermal insulation, you need to look not only on the characteristics, the heat-saving properties of the material and its parameters, but also for the service life. Since a number of products with good indicators, has a frequently small operating period.

Therefore, it will be necessary to replace it before the prevention of the system itself will be required. Especially, it is important in rooms with floor-coating in the form of tiles, because it is difficult to produce it. In this regard, experts advise to acquire a product with a warranty period of 10-15 years.

• thermal conductivity level;
• density indicator;
• hydro and steam resistance.

For rooms having high ceilings, it is better to choose durable, hard species having a polymer base. If you warm up - a great mineral wool version, because it fireproof.

For your information! It should not be overly saved on the heat insulating material when laying heating floor. Its cost will pay off for 3 years, especially when heating natural gas.

Features of laying insulation

The principle of installation of the heat-insulating layer is simple, does not need a special tool and special experience, the main thing is to comply with the technological process.

Watch the video How to choose a heater:

Installation of polystyrene foam plates

Work on the installation of polystyrene foam plates under water warm floor looks like this:

1. Not depending on the type of thermal insulation product, it is necessary to start with the preparation of the draft floor. It should be smooth, without cracks. When the irregularities and flaws are detected in the surface, they need to be neglected.

• Waterproofing activities are to arrange a layer of moisture-protecting layer, it can be a polyethylene film.

• The sticker of the damper tape around the perimeter of the room is necessary to compensate for temperature permissions.

• Laying insulating plates throughout the area - sheets are fixed to the base using plastic brackets or dowels, it is possible to land on glue.

• Pulling the foil film and installing the reynaming grid over the insulation.

• Installation of heating elements (pipes) - they are attached to the grid according to the planned scheme. The seams between the plates should be sampled using a tape, it will help in keeping heat.

• Pouring concrete screed over the pipeline. For surface strength, there is recommended to add plasticizers into the solution. It is necessary to make a frozen mixture, it will be necessary for about a month.

• The last step is to install the finishing coating.

For your information! It is worth considering that the pipes of a warm floor with a coolant inside have a significant weight, plus a screed and finishing coating, all this in the aggregate will sell the insulation over time.

To avoid this, high strength thermal insulation is required. In addition, to enhance the design and uniform load distribution, reinforcement or laying of plates made of polystyrene foam with bobbs is recommended. In addition, such mats facilitate the process of placing pipes and their fixation.

Laying rolled foamed polyethylene

Installation work on the construction of water warm floor using rolled polyethylene, as insulation, begin with alignment and purification of the base.

In the second stage, the heat-insulating material is prepared. It is in the cutting of the heat insulator on the strip of the desired length, with the help of a stationery knife.

Next, the foil product is placed on the prepared base of the metallized surface upwards to ensure the best reflection of heat. The canvas must enter the walls, it is necessary to compensate for the expansion of the screed when heated. The insulation is attached to the floor for glue or double-sided tape. And the seams should be punctured using one-sided adhesive.

The process of installing a water circuit on polyethylene in rolls is facilitated by the presence of a mounting markup printed on it, which shows the distance between the pipes. The heating elements on the foam can be put on the "snail" or "snake" scheme.

Further work on the design of water heating floors is the installation of the reinforcement grid, the fill of the concrete screed and the laying of the floor covering.

For your information! For use in a water warm device, the ALP brand foam is recommended.

Laying of mineral wool

Mineral wool can not be crushed, so the most optimal way to install it is the floor, with the installation of the lag.

Step by step, the installation of a "cake" of a warm system with a thermal insulation substrate from mineral wool is as follows:

1. Preparation of the foundation is a mandatory stage of work in the arrangement of any warm floors. If the floors in the house are old, then it is better to completely remove them to concrete overlap or black wooden floor. The surface should be inspected for irregularities and cracks, when they are detected - they are closed.

• Laying the hydro and vaporizolation substrate is an ideaable stage when using a mineral insulation, as it is afraid of moisture. For these purposes, the waterproofing of a roll type is suitable - rubberoid, or other modern materials. Sheets are fixed to a polymer or bitumen mastic. The material is stacked in Farm, the seams should be labeled with mastic.

• Arrangement of wooden lags - they are attached to the draft floor all over the area. They take a servo sewing 5 to 6 cm in size, and installed on a concrete surface, fixing the dowels, and on the wooden floor - screws. The step between the fasteners depends on the sexual coating, which is planned to be laid, it ranges from 40 to 80 cm. In the lags requires to make the contour to rotate.

Important! If mineral wool is used as a heater, then the distance between the lags should exceed the width of the material by 1.5 - 2 cm.

• Laying the insulation - mounted mineral wool in the intervals between the bars. It is necessary that it will be immelled at least 5 cm, since the ventilation clearance is required.

• Installation of the second waterproofing layer is necessary, because wool is not moisture resistant. An ordinary polyethylene film is used, which is stitched into the lags stretching, and is fixed using a stapler.
• The preparation of the pipe substrate - rails are used, which are nailed along the lag, and the indentation of the walls 30 cm is made. There must be grooves between the slats in which the metal profile will be placed to lay pipes. Their size depends on the step laying the circuit.

For your information! Metal profile can be replaced with foil into which the pipe is turned around.

• Installation of the heating circuit - wearing pipes are stacked in the installed profile, according to the planned scheme.

• Installation of flooring for interior coverage is a chipboard or plywood.
• At the end, the flooring is hardened.

On this, warm floor with a thermal insulation substrate - mineral wool, ready to operate.

The optimal thickness of the insulation

It is important to correctly make the choice of not only the model of the insulation, but also its thickness, the saving of thermal energy depends on it.

For your information!If the thickness of the insulation is small, then the floor goes most of the heat, its number is equal to the stream of warm air rising up.

The thickness of the insulation should be chosen depending on climatic conditions. Definitely, in the area with a cold climate, the layer of thermal insulation material should be greater.

Not an important meaning also plays what the room is located under warm water floors. If this is a cold basement, or the design is stacked on the ground, then the layer of the insulation should be thicker, 100 - 120 mm. When building a heating floor over a warmed room, a sufficient thickness is 30 - 50 mm.

The arrangement of the heat insulating layer under water warm floor is not a luxury, but the need. Not properly made insulation will lead to a deterioration in the quality of heating and excess costs.

Video instructions

The main system of warm floors is very difficult and extensive, it includes several systematization of various parts, each of which carries out its task. Choose the right and necessary water heating system is only part of our task. In addition, it is necessary to choose a heater for warm water floor, which will significantly increase the level of heat conservation several times, which, in turn, will significantly save electricity. Also, when choosing the right isolation and the use of a special foil base, there is a unique opportunity to completely save heat, it makes it difficult to penetrate.

The insulation for a warm floor, the price of which depends on the material from which it is completed may be the most diverse, but the largest foam was obtained by polystyrene foam, which is a material similar to the properties on the foam, but possessing much more practical performance characteristics. For the formation of the insulation layer, a sheet of polystyrene foam is not less than 3 cm thick. In order for all the compounds existing between the sheets, the energy was maximally dense, they are enhanced by the polymer canvas, which includes the reinforcing grid.

If in the process of installing the insulation will be used a substrate for water warm floors, your gender will have excellent resistance to moisture, and moreover, have a high service life. The following items are the essential components of the maximum efficient water heating floor:

• Screed or concrete base that will save and delay heat on its way down;
• Foil thermal insulation under water warm floor, reflecting heat back to heated room. Water warm floor, the substrate of which the foil side is addressed to the room, significantly reduces heat loss and increases the temperature in the room.
• Heater under the warm floor, which retains maximum energy, reducing electricity consumption.

In specialized stores, you can purchase a heater for warm water floors with special markups. Such sheets of polystyrene are ready for work, you only need to remove unnecessary. The standard size of such sheets is 50x50cm, but if you have a way out directly on manufacturers, then you can order sheets of absolutely any size.

Foil polystyrene with marking

Highly qualified specialists understand that properly mounted warm water floors are the key to maintaining the energy of indoors, since the floor installed without insulation, approximately 25% heat alone during the winter period. Therefore, in order to reduce costs and keep warm, it is necessary to use a reliable insulation under water warm floor.

For what purposes you need to use the insulation?

The competent installation of floors is due to the installation of thermal insulation materials, otherwise, after a certain time on the surface of your floor and in places where the floor comes with the outer walls, the formation of condensation is possible. Due to the elevated black mold and fungal formations on the inner surfaces of the floors and fungal education, it can all be negatively affecting the design itself, as well as on the health of people living in the house.

In order for the all over the above, it is necessary to carefully design the thermal insulation of your home, high qualityly mount the insulation for water warm floors and carry out the rest of the necessary measures to maximize the heat loss in any place of the heated room.

The insulation for warm sex has an important function in operation. It consists in decreasing, where there is no need for the radiation of thermal energy. Thus, the flow of warm air is fixed at the same exchange rate, thereby decreasing the cost of electricity during the operation of the floor heating system, while the power of water heating floor remains unchanged.

Direction of heat flux in different heating systems

What materials should be used?

To date, the choice of necessary materials is not small. The substrate under the warm water floor, as well as thermal insulation for warm flooring of water sold in specialized stores, where you can buy all the necessary materials at once. For example, our plates for warm water floors must be either from mineral wool, or from polystyrene foam. For each such material, special installation schemes of thermal insulation, taking into account the main features of their application. For example, heat-insulating plates for warm sex have such qualities as high heat insulating and sound ability, excellent water repellent properties, fire resistance, etc.

As for mineral wool, it is worth noting that it happens two species: a solid stove and a flexible mat. The heat transfer of warm water floor using mineral wool is the maximum, but the most important thing is that it is not exposed to fire. If you have an aluminum substrate for warm water floor, then, in principle, flexible mineral wool as a heater will be sufficient to obtain the maximum water floors.

Mineral wool stove has an exceptional feature. The front side of such plates is tagged with a blue stripe, and when laying this blue strip should be on top. The base for warm water can be like concrete, tai wood, but with a wooden base, it is necessary to larger to be greasy, in order to avoid high heat loss.

In addition to the main heating system, an energyflex for a warm floor can be used. This high-quality material is a ready-made system of thermal insulation, which allows to significantly reduce the installation time, mainly used in the case of unexpected, but short-term need for heating.

Preface. The system of warm floors is not easy and is very extensive, it includes several different nodes, each of the nodes performs its definite task. Choose the correct water heating system to the house is only part of the task. In addition, it is necessary to correctly choose the insulation for warm water floors, which increases the degree of heat conservation in the residential room several times.

Do I need to lay insulation under the warm floor?

Qualified specialists say that wall-mounted warm floors - the key to the maintenance of thermal energy inside the room, because without insulation the installed floor, it can take up to 25% heat loss in winter. To reduce your costs and maintain the maximum amount of heat in the house, you must use a reliable insulation under the warm floor and warming up windows for the winter.

The insulation of the warm floor, the price of which depends on the material will allow you to save electricity, making it difficult to penetrate the heat under the warmed wooden floor in the house. The insulation for a warm floor can be different, but extruded polystyrene foam, which is plates similar to foam, but with more practical characteristics, was most popular.

For the insulation layer on the floor, a sheet of extruded polystyrene foam (fastener) is used for at least 3 cm thick. So that the connections between the sheets have not passed the heat and were maximally dense, the joints are additionally properly reinforced and amplified by the polymer polymer with a reinforcing grid. In this case, your water warm floor will have resistance to moisture, and have a long service life.

The following items are essential for an efficient warm floor:

1. The concrete screed will save and delay heat on the way down;
2. Foil insulation will reflect heat back to the room;
3. The insulation under the warm floor will retain maximum heat, reducing electricity consumption.

What materials should be used?

In modern country construction and repair, several types of thermal insulation materials are used. Each type has its own advantages and disadvantages. Before proceeding with the heat insulation device, it is necessary to comprehensively examine the capabilities of the insulation, compare the characteristics of minvati and other popular materials - glass gambles, fasteners, polystyrene foam, etc.

The best insulation for warm water floor should have an important function - reduce radiation of thermal energy under the floor. Thus, the heat and stream of warm air remains indoors, due to this, the costs of electricity are reduced, while the efficiency and efficiency of water heating floor remains unchanged. What insulation put under the warm floor in the house or apartment is best?

To date, the choice of materials is not small. There are now in stores today to buy a warm water floor insulation with labels and acquired all the necessary materials at once. Such plates of polystyrene foam are ready to work. Heat-insulating plates for warm water floors have high thermal insulation and sound insulation, excellent water repellent properties and fire resistance.

Choose a substrate under warm water floor

Polystyrene foam for a warm floor

The polystyrene foam is produced in sheets, it is easy to mount on the base of the floor. Plate thickness varies from 30 to 120 mm. The greatest thickness of the plates of foam should be taken when the basement is not heated under the floor. The thickness of the slab in 30 mm is mounted if the heated room is located under the overlap. The polystyrene foam must be protected from moisture penetration with waterproofing film.

The disadvantages of foam include low material strength. Due to the brittleness and low strength of the polystyrene foam, with a concrete screed device, it is necessary to rein the thermal insulation layer. The advantages of the material should include low cost, thanks to which the foam plates became the most popular insulation, like the warm floors of Knauf in our country.

Mineral mats for a warm floor

At the advantages of minvati include the ability of the material to fill all the space, providing monolithium of the heat insulating layer. The disadvantages of mineral wool are high hygroscopicity. Mineral mats tend to drink moisture and lose their properties. The mineral wool layer needs high-quality vapor barrier, which is not always independently possible at a high level.

For a substrate under warm water floor, you can use mineral insulation of various manufacturers. In the line of popular brands there are types of basalt and fiberglass insulation, withstanding serious loads that are intended for insulation of floors in a house on screw piles, float insulation on the first and basement floors.

Cork insulation for a warm floor

To insulate the base under the "warm floor", you can use a cork insulation impregnated with wax. Material is mounted on adhesive compositions. The disadvantages of cork insulation include sensitivity to moisture and biological destruction. Before laying, you should take care of reliable sealing and vapor barrier.

Floor insulation cork, laying under the flooring of agglomerate panels - a good way to reduce heat loss at home. Although the cork panels are inferior in heat resistant indicators synthetic materials, they are quite appropriate.

Choose the best insulation for a warm floor.

Profile heat-insulating mats

Heatel for a warm floor. Profile mats

Profile mats are designed for a warm floor of a water type. They provide reliable heat insulation overlap and covered with vapor insulation membrane. This removes some of the problems in the form of the need for additional stacking of the parobar. On the surface of the heat-insulating mats there are protrusions intended for laying and fixing flexible pipes of a water warm floor system.

The main task of the heat-insulating layer is the direction of thermal energy strictly up, that is, the room for which heating is necessary. The thermal insulation layer prevents heat penetration through the lower floor overlap.

Features of laying insulation

Warm water floor diagram

To properly make a warm floor, you need to take care of a sufficient layer of insulation, which reliably protect the coolant from a concrete base or the rammed soil. In order to avoid these problems, lags from the bar are first installed. Then the insulation materials, the heat transfer film or foil, are laid between the bar, follow the coolant pipe system.

After the pipe is poured with plaster or cement mortar, and after drying, the finish flooring makes. The floor will steal about 10 cm of the room height, but it will be warm and comfortable in any frost. The heating and cooling of the floor will occur smoothly, so after the disconnection it will be warm for some time, you can walk at home in socks or slippers in the most mulk frost.

Video. Choose a substrate for a warm floor

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Heat Heat Heat

The most important element of the water heating floor system is the insulation. It is difficult to argue with this. Water warm floor is made for heating the room located above it, and not under it. To prevent the passage of heat from the pipes of water warm floor down and direct all heat at the top, it is necessary to put the barrier. The correct selection of the insulation is the key to the quality of the heating system.

Those plans to install warm floors in their home or apartment are necessarily thinking about what insulation is more correct to apply. This is especially important for those who plan to make the home heating system only with water warm floors.
Types of insulation used for laying water warm floor.

Penofol, energyflex and them like

Unfortunately, one of the most common Materials used as a heaters for water heating floor. This material is always worth it in most of the stuffing equipment stores. It is used both installers and those who make water warm floors with their own hands. The opinion is:

♦ in -per - this is a heater;

♦ in -Were - has a reflective foil and sends heat up;

♦ In -Wray - light and placed in any car, although the tram can be brought;

♦ in-solid - easy installation, rolled out everything;

♦ In -poly - well, very cheap !!!

Immediately let's say - this is the most unsuccessful version of the insulation for a water warm floor. Explain why.
one . Foil will effectively reflect heat when the air be in front of it. There is no such air in the screed. All density.
2. Solution or concrete corrosive foil very quickly. Look at the drawing. A slit piece of screed on which foil stuck from foam.

The same piece of solution, only three days later:

We think, no comment or is better not experiment. Foil left and a trace left. Some may say that it is possible to cover with a plastic film, and some manufacturers have already begun to produce such material with a film applied. Yes, in this case, the foil will be protected and will continue, but the effect of the reflection still will not appear.
3. The thickness of the insulation. Most often a foam or similar material for laying under the pipes of water warm floor with a thickness of 3, 5 or 10 mm is used. Is this thick enough? Immediately say, you will lose heat into the ground. If you have a trunk gas, may not be much noticeably financially, but if you are heated with electricity, cylinders or diesel, there are not small amounts. We offer several calculations. Coefficient thermal conductivity Penofol fluctuates from 0, 37 to 0, 50 W / m * s. Pouring cement-andy solution.

Calculation with foam thickness 5 mm

In the ground goes away more than half of What goes to the room.

Payment with a thick foam 10 mm

Also big losses.
When applying 45cs in the floor takes 30 watts.
Let's consider and make a conclusion. Every hour takes 30 wat with m2.
30 * 24 * 149 \u003d 107280 W or 107 kW for heating season.
24 - hours in days
149 - Heating period in Krasnodar. In other regions, it can be much larger.
To date, the cost of 1 kW of electricity is about 3, 5 rubles. 107 * 3, 5 \u003d 374, 5 rubles will cost each square meter, each year. There are enough such money for any good insulation and will even remain, and the next year there will be a solid economy.
If you are when pouring, instead of a cement-and-suicide solution, apply a semi-dry tie ... it will be even big heat losses and your blood earned money. Yes, and up warmth will go less. We get the most wrong and most wasteful warm floor in the world.
Conclusion: Penofol and such materials to use as the only insulation for a water warm floor systemit is impossible. If under the foam to lay, for example extruded Polystyrene foam, and to roll over the foam with marking, for the convenience of installing a warm floor with a certain step, it will be correct.

Extruded polystyrene foam

This is considered the best insulation for use in the water heating system. This material has a good density at a low coefficient thermal conductivity. If this insulation is spread with marking, then with the help of special harpunov, you can quickly install water floors. Harpoon is needed only for pipe fixation at the time of fill the screed. You can also use a metal mesh with different cell size 100 * 100. 150 * 150, 200 * 200. Depending on the laying step, the grid is applied with corresponding Cell. Mesh, using fungi for insulation fasteners to the floorthrough the insulation, and to it, with the help of electrical clamps knit the pipes of a warm floor.
Need to remember heat resistance - This is the thickness of the material divided by the coefficient thermal conductivity. The thicker material and below the coefficient, the less heat is spent in the empty. Unlike foam, such material can be laid with layers without loss of strength and bring the thickness to the required size.

Let's calculate S. extruded expanded polystyrene With a thickness of 50 mm.

Under the same conditions we lose just 6.6 watts, it's in five times less heat. The use of such a heaters for water heat is the most efficient.

Thermopol - optimal insulation for water warm floor

Another material that often uses as a heater for laying water underfloor. The advantage of such a heater is that the pipes are stacked in special grooves. The speed and simplicity of laying the insulation itself and pipes is the main advantage of such a heater. Under it you can put any thickness of the same extruded polystyrene foam. When pouring the pipe, the pizes are better protected from damage. You can pave boards or paneur and quietly roll a car or walk with buckets without advancing on pipes of water warm floor.
With the same special grooves exist and specialized Mats, but prices for them sometimes go all reasonable borders.

on insulation

Another frequently asked question. Suppose you have a wardrobe -crupted things. Length 3 m, width 0, 65 m. Such a wardrobe, through the finishing coating and the tie evenly presses on the insulation. Let it weigh 2000 kg. We believe.
3 * 0, 65 \u003d 1, 95 m2
1, 95 * 100 * 100 \u003d 19500 cm2
2000/19500 \u003d 0, 102 g / cm2.
The pressure is only 100 grams per cm2 !!!. For example , extruded The polystyrene foam is able to withstand 35 kg per cm2. Output . FROM insulation for warm floor everything will be in order on the length decades. AND yet - Mouse HIS NOT Gnaw.

Cost insulation for water warm floor

Left sound cost insulation.

Thermopol. - we using product companies « Kao». Cost depends from density and fluctuate from 190 before 230 rubles per m2.. If a base not rovno, have to enjoy additional fasteners. Added 20 -30 rubles on the everyone square meter.

Extruded polystyrene foam - cost such material in district 4500 rubles per cubic meter. IN cuba 33 m2. for thickness insulation 30 mM.. It turns out, what 1 m2. worth it 135 rubles. Grid reinforcing. She is need not so many for reinforcement, how much for fastening pipe from defined step stacking, and to pipe water warm floor not pop up for fill. Take necessary from reserve on the thread. Cost grid 3 mM. from cell 150 *150 mM. in district 60 rubles. FROM coefficient on the thread hope 70 rubles. Fastener in video gribkov for insulation 20 -30 rub. IN dann case is he obligatory. Electric clamps. Need for fastening pipe to reinforcing grid. it about 20 rubles. Cost total set it turns out 255 rubles.

Substrate for warm floor type Penofol. Cost quality substrate, for thickness 10 mM. in district 100 rubles per m2.. Further can go two paths. Or use reinforcing grid, or use dowel-homut 6 mM. for fastening electric cable. IN first case cost will be 170 rubles per m2., in second 110 rubles per m2.. But as insulation such option not works. About it is we written above.
If a take golden middle. That in quality insulation for warm floor it is better total use option from thermopol.
we ready produce design and installation water warm floor « under key»