Insulation of the basement of the foundation from the outside: we make insulation with foam plastic with our own hands with step-by-step instructions. How to insulate the foundation - a warm base is the key to comfort Insulation with sheet material

Saving heat energy with proper insulation

Many owners of private houses, in an effort to make them cozier and warmer in cold weather, sheathe the walls with insulating materials.

But do not forget about the foundation. After all, he has enough big loss thermal energy. It is for this reason that the owner needs to know how to insulate the foundation and what can be used in this case.

To date, there are many methods for insulating the bases of various buildings, which helps to save the energy that is spent on heating.

The need for insulation

The floor in a private house is located slightly above the ground level. This is due, as a rule, to the fact that the floor in the house must be protected from dampness. Cold enters the room through the foundation, cooling the floor. Therefore, in buildings where the ceilings are high, heating is partially wasted.

After all, people often feel cold feet due to cold floors. From this, even warm room the person freezes. Therefore, it is necessary to think about the insulation of the house in the first place.

Even in ancient times, people knew very well how to insulate foundations. For these purposes, heaps from auxiliary materials. Today, insulating materials are available on the market in sufficient quantities. It is not necessary, as before, to cover the foundation with peat or straw. But mounds are being made even now, although not the same as before.

Warming materials

For the insulation of foundation elements in buildings, the following modern materials are now used:

• expanded polystyrene;
• penoplex;
• polyurethane foam.

To carry out the insulation of the foundation, the following qualities are required from the materials used:

• low thermal conductivity;
• minimal moisture absorption;
• sufficient resistance to compression.

After performing work on the insulation of the foundation, for example, with foam plastic, drainage is also needed to remove excess dampness from the insulated walls. This is mandatory when the foundation is built on wet ground. Drainage is laid below the floor of the house. The basis for the drainage pipes is a layer of gravel. Crushed stone is also poured on top of the pipes.

Warming methods

All methods of thermal insulation of the foundation are divided into those performed before laying and those performed after construction. Where winters are long and cold, foundations need to be insulated on both sides: internal and external. After all, the concrete that is used for manufacturing does not have thermal insulation properties.

When erecting foundation for the purpose of insulation, materials installed in the formwork are used. The cost of such a foundation is not cheap, but still, in the end it turns out cheaper than when saving on this.

If the building has already been built, it is much more difficult to carry out thermal insulation of the foundation. It happens that the owners, wishing to save money, made a foundation with insufficient depth. In this situation, many problems will arise, since the ground under the building will freeze heavily.

Then the foundation will need to be dug in on both sides, and then insulation and waterproofing materials. The floor of the basement can be sprinkled with expanded clay to reduce its freezing. The most popular methods of warming the foundations are with the help of earth or with the help of expanded clay.

Base insulation with earth

Earth is an inexpensive insulator. It is possible to insulate the foundation base in this way without much spending. Such insulation is as follows: the ground is covered up to the floor level. In this case, the entire foundation of the house will be below ground level. But in this case, you also need air ducts coming out of the basement. They should be raised higher.

The obvious disadvantage of warming in this way is its low thermal insulation. But if the foundation is deep enough, you can insulate the house through the floor, or rather, using the basement from the inside.

Expanded clay insulation

For such insulation, the foundation should first be dug from all sides, completely cleared of the soil to the very foundation. Moreover, they dig a trench around the house, about 0.8 m wide from the wall. The walls are cleaned of the remnants of the earth and prepared for waterproofing and insulation.

Waterproofing the foundation of a private house, as well as expanded clay insulation, can be done using coating or rolled roofing material. Bituminous mastic is usually used, as the most inexpensive, but effective remedy. Preparation of the foundation surface for bituminous coating requires the elimination of sharp corners.

Bituminous insulation against moisture and cold is applied hot or cold. For the hot method, the mastic is preheated to 180 in an iron or cast iron bowl. Cold is simply mixed and applied to the foundation walls with a roller. To improve the quality of work, the mastic is applied in two or three layers. This insulation can be combined with earth insulation.

Drainage is a crucial step in the insulation of the foundation with the help of expanded clay. Where groundwater is located at a depth of less than a meter. If expanded clay gets wet, it loses some of its insulating properties, so measures are needed to divert water from the foundation.

For drainage, they dig a pit at a small distance from the foundation. Geotextiles are laid in the pit, crushed stone is poured and then pipes are laid. Holes about a centimeter in diameter are drilled in the pipes. Then the pipes are covered with gravel, covered with textile edges on top and covered with sand on top.

The disadvantage of expanded clay is its high fragility. To insulate the floor in this way, lay on top of the insulation mineral wool and a film as protection against moisture.

Insulation with expanded polystyrene

Material such as expanded polystyrene is the insulation that professionals prefer. It is used by those who want to completely eliminate heat loss through the foundation or floor. They sell the material with plates, but some tricks are often used for its installation. In this way, the foundation of a wooden house is insulated.

Before fixing the plates to the walls of the foundation walls of the building, waterproofing is applied to the points of contact and from the sides. Plates are laid from the lower level of the foundation to the floor. The seams between the plates are filled with foam. The thickness of the insulation is determined by the type of foundation and its parameters.

Still often there is foam insulation. Such insulation material can be used on slightly frozen soils, but on condition that it is well protected from moisture. If the foundation base is insulated wooden housing construction, in a region where it is very cold in winter, and the soil freezes strongly and deeply, it is better to use foam instead of polystyrene for this purpose. It is much stronger, because it can withstand pressure frozen ground and won't crumble.

Internal insulation

You can insulate the foundation with inside. This can be done by simply making wall cladding basement insulating material. It will not allow cold air to penetrate inside and prevent the leakage of thermal energy. This reduces the possibility of steam condensation.

The material that can be used as insulation is called extruded polystyrene foam. Plates of this material are glued to the basement walls with special glue. But this warming is optional.

It is possible to insulate the foundation of private housing construction on your own, as with outer side, as well as from the inside. The main thing in this situation is to take into account all the advice of professionals so that the thermal insulation work is done correctly and with high quality.

People at all times sought to build their houses with a good margin of safety, because it is normal for a person to create something that will stand forever. But, as already known, the durability of the structure primarily depends on the quality of the foundation, and even if sufficiently strong concrete is poured at the base of the house and deep enough, there is still a risk of negative and destructive effects on the structure of the house.

The bottom of the trench is covered with sand 10 cm thick, and on top of the sand to the level of the lower part of the blind area, the trench is filled with expanded clay or other soil with low thermal conductivity. Upon completion of the insulation work outside the walls of the building to a width of 50-80 cm, a blind area is made with a slight slope away from the house.
If insulation is pile foundation, when the grillage can occupy a height of about 50-80 cm, many people cover the entire internal area of ​​\u200b\u200ba private house with expanded clay, in most cases it is very convenient and cheap.

Use of Styrofoam

When it comes to warming the foundation from the outside in a professional and most effective way, then, of course, one cannot fail to mention materials based on expanded polystyrene. Until the technology was sufficiently developed, many used foam sheets for thermal insulation work, which showed many shortcomings in the work. Among them are high combustibility of the material, water permeability and toxicity.

Now it is gaining popularity and is already rightfully becoming the market leader in thermal insulation materials penoplex.

In fact, penopolex is the same polystyrene foam, only obtained by foaming it under certain thermal conditions.

Thanks to some technological features production, the output is a sufficiently high-quality and dense product, consisting of granules with a size of only 0.1 mm.

Taking into account the characteristics of the material, it is clear why the insulation of the foundation with foam plastic has become so popular:

Penoplex can be used for insulation of the facade, walls, foundation and basement, thermal insulation of the floor and roofing, as well as for warming the blind area.

Thermal insulation of the foundation is an important and crucial stage in the construction and repair of a house. An uninsulated foundation is not only a serious heat loss, but also a risk of freezing and subsequent destruction of the underground structures of the building. Insulation of the foundation from the outside allows you to reduce heat loss by several times, in addition, it reliably protects the base of the house from exposure ground water and low temperatures.

Why is the insulation of the foundation from the outside more effective?

To understand this issue, it is necessary to imagine the working conditions of the foundation. The foundation takes on both the load from the building and the pressure of the soil. Its underground part is constantly exposed to ground and atmospheric waters, while the porous foundation material can get wet, absorbing moisture. When the soil temperature drops below zero, not only the soil freezes, but also the wet foundation. At the same time, cracks and chips form in porous concrete. In addition, seasonal movements of heaving soils also have a destructive effect. These factors gradually lead to partial destruction of the foundation, followed by damage to the walls of the building.

To avoid harmful effects environment on the foundation, resort to a set of measures, and two main protective measures- this is his warming. At the same time, insulation is most often carried out precisely outside, since with external insulation, not only the premises of the house, but also the foundation itself are protected. In some cases, they also resort to warming the foundation from the inside, most often when external insulation impossible.

Materials and methods of insulation of the foundation

There are several ways to insulate the foundation from the outside:

• Backfilling with sand or expanded clay. The oldest and least effective method, based on the property of these materials to remove moisture and create an air gap near the walls of the foundation.
• Insulation with foam boards and its modern analogues: polystyrene foam, polystyrene.
• Insulation using mineral mats, followed by sheathing the foundation with a protective screen;
• Spraying on the surface of polyurethane foam using a special installation. As a result, a seamless layer is created that is resistant to mechanical damage with high thermal insulation properties.

Backfilling the foundation with sand and expanded clay

The advantages of the method include the low cost of the material and the ability to perform thermal insulation on their own, without using professional help. In addition, the backfill layer is simultaneously a waterproofing and compensates for the pressure of the soil during heaving, which makes it possible to effectively use this method on wet clay soils with high frost heaving.

Execution technology:

1. A pit is being prepared along the perimeter of the foundation from the outside. Its depth should be slightly lower than the depth of the foundation, and the width depends on the region and soil moisture. The lower the temperature during the winter months and the higher the groundwater level, the wider the pit should be.
2. Drainage is performed at the bottom of the pit: geotextile is laid, covered with gravel, a perforated pipe is placed on the gravel, and again a layer of gravel. The pipes are connected into a single system and taken to the well.
3. The foundation is cleaned and dried, after which it is performed. The choice of the type of waterproofing depends on the operating conditions of the foundation, but it should be noted: when backfilling with expanded clay, it cannot be used coating waterproofing bitumen or polymer compositions due to the possibility of damage to the waterproofing film.
4. The prepared trench is backfilled with sand or expanded clay, ramming it in layers.

Insulation of the foundation with foam plastic and its analogues

A modern and highly effective method that allows high-quality thermal insulation of the walls of the foundation. The advantages of the method are high thermal insulation characteristics material, ease of thermal insulation, material resistance to mechanical stress and damage, ease of finishing. Disadvantages - preparation of the foundation surface is required, protection of the insulation layer from rodents, and also suitable for this method waterproofing.

Execution technology:

1. The surface of the foundation is dug to the full depth, cleaned, dried. Residue must be removed from the surface. bituminous waterproofing, fats, oils - foam plastic and its analogues are destroyed upon contact with these substances.
2. The foundation is waterproofed in one of the following ways: using polymer-based mastics; or .
3. Plates thermal insulation material stacked on a special glue - it is sold in the form of a dry mixture. Plates usually have grooves that facilitate their joining and prevent the appearance of cracks, gaps and cold bridges.
4. The foundation surface is protected reinforcing mesh from damage by rodents, laying it on the same glue. After the glue has dried, the underground part of the foundation is backfilled with sand, and the ground part is additionally fixed with the help of special dowels with a wide cap.

Foundation insulation with mineral insulation (mineral wool)

This method is used quite rarely, since, along with good thermal insulation, it has a number of disadvantages: it requires the construction of a frame, good protection insulation from getting wet, as well as the construction of a protective wall of brick or other finishing materials. It is usually used to perform the ground part of the foundation and ground floor as a continuation of the thermal insulation of the walls of the house.

Execution technology:

1. The surface of the foundation is cleaned and dried, defects are eliminated.
2. Perform on it a frame for heat-insulating mats from a metal profile.
3. Stacked thermal insulation mats on the frame and fix them. The surface of the insulation is covered from external moisture with a vapor-permeable wind and hydroprotective film.
4. A protective brick wall or a ventilated frame is erected.

One of the most effective ways insulation of the foundation both outside and inside. For its implementation, special equipment is required - a spraying installation, with the help of which the insulation components are supplied to the surface of the foundation under high pressure. The result is a seamless foam layer with high thermal and waterproofing properties. To perform such waterproofing, it is better to contact specialists, since the quality of the coating largely depends on the correctly selected mode and the installation itself.

Thermal insulation of the foundation from the outside can reduce the heat loss of the building by 20-25%, while increasing its service life. Thermal insulation of the foundation can be carried out both at the facility under construction and at the building in operation.

Most owners of private houses do not consider it necessary to insulate the foundation, believing that this is a waste of money. Thoughts about the need to insulate the basement from the outside come when problems with dampness and mold on the walls become visible, and the basement begins to crack. Do-it-yourself waterproofing will help to avoid these troubles, we will tell you how to do it in the article.

Why is the foundation warm

Basement insulation is just as important as house wall insulation. Through the foundation, the room loses about 20% of heat. Many people think that it is enough to insulate only the basement, but this is a gross mistake. Since the destructive force of water and low temperatures continues to act on the base. Moisture, getting into the pores of the foundation, freezes when exposed to low temperatures and, expanding, destroys the structure. Microcracks appear, which become cold bridges, and when they grow, they can lead to the destruction of the building as a whole.

Insulation of the foundation prevents its destruction

External insulation eliminates the effect of low temperatures and groundwater. The dew point shifts to the insulation layer, and the foundation concrete does not change its properties. Warming is especially important in regions with a harsh climate and heaving soil. Such soil, freezing by 15%, is able to move 35 cm, which entails deformation of the base. On such soils, the depth of the foundation should be below the freezing point, and the insulation is done not only vertically, but also horizontally.

The benefits of insulation

With an uninsulated foundation, cold air from outside enters the living space through the flooring. Therefore, when building a house, the floors are raised above the ground level. Without insulation from the outside, constant dampness in the basement and cold floors in the house are guaranteed, which reduces the level of comfort. So, what facts speak in favor of insulation:

• the heat loss of the building is significantly reduced, which means that the financial part heating budget;
• the effect of soil heaving forces is leveled;

Benefits of basement insulation

• prevents the formation of condensation and mold;
• prolongs the service life of the foundation structure;
• protects waterproofing from mechanical damage;
• it is easier to block the bridges of cold.

Advice. special attention building corners are required. In these places the thickness heat-insulating material doubled.

Warming methods

When choosing a material for insulation, attention is paid not only to the cost, but also to its main characteristics, namely: hygroscopicity and resistance to deformation. There are several ways to insulate:

1. Plate heaters: extruded polystyrene foam 200 kPa, foam glass, polyurethane foam and synthetic rubber in the form of foam.
2. backfilling bulk materials: expanded clay, boiler slag.

Most often, polyurethane foam or extruded polystyrene foam is used for insulation.

Advice. On the plates, which are located below ground level, glue is applied pointwise. This is necessary so that the condensate formed between the waterproofing and the insulation flows freely into the equipped drainage.

Expanded clay insulation

Before the advent of new generation insulating materials, expanded clay was often used. Its main advantage is low price, but the level of thermal conductivity of the material suggests its use in large quantities. So dignity becomes a disadvantage. It is rational to put it into action as additional insulation.

Expanded clay insulation

Warming is carried out as follows:

• the foundation is dug up to the sole, to a trench width of 1 m;
• clean the surface of dust;
• in the absence of waterproofing, bituminous mastic is applied;
• equip drainage if the groundwater level is high;
• a film is placed at the bottom of the trench from the wall to the drainage;
• the trench is filled with expanded clay and a blind area is made.

Sheet insulation technology

When erecting a new building, insulation work begins after the installation of the floor slab. If the house has already been erected, then the foundation is dug around the perimeter to the base to a meter wide. The walls are dried, all dirt is removed. With a close level of groundwater, drainage is arranged. After complete drying, a latex-based primer is applied to the foundation walls. It fills small voids and provides a strong adhesion of the waterproofing to the basement surface. Roll waterproofing stack, pressing strongly with a roller. Joints are covered with sealant for reliability. Wait until the waterproofing dries, and then proceed to laying the insulation.

Scheme: insulation with sheet material

Advice. Do not use plates torn from the surface or move them after the adhesive has hardened.

The advantage of extruded polystyrene

Styrofoam boards are considered the best option for private construction. Since they have a long service life and high compressive strength. Practically do not absorb and do not pass moisture. For a long time it retains thermal insulation characteristics precisely because of its low hygroscopicity.

Thermal insulation of the base with extruded polystyrene foam

These plates are produced with special grooves. Moisture is drained through them. In tandem with geotextiles, polystyrene, in addition to insulation, performs the role of waterproofing and wall drainage.

Advice. Ordinary polystyrene, although it has an attractive price, is completely unsuitable for insulating the foundation. It absorbs moisture and breaks down quickly.

Polyurethane foam is applied in foamed form to the cleaned surface of the foundation. It combines the properties of waterproofing and thermal insulation. 50 mm of polyurethane foam is equal to 1.2 m of polystyrene foam. The material hardens very quickly, forming a cellular structure. Foam hermetically envelops the foundation, leaving no gaps and without forming seams, unlike tile insulation. The advantages of polyurethane foam insulation include:

• lack of seams in the coating;
• high adhesion of the material;
• no need for waterproofing;
• low vapor permeability;
• service life of more than 40 years;

Insulation with liquid polyurethane foam

• low thermal conductivity;
• environmentally friendly and biologically neutral.

There are only three cons. This is high price and the need to acquire special equipment for styling. Polyurethane foam is destroyed under the influence of solar ultraviolet radiation.

Water drainage from the basement

Together with insulation, it would be good to provide for drainage so as not to dig out the foundation twice. Drainage pipes are laid below the level of the base of the foundation or below the level of the basement, if any. A gravel cushion is poured with a slope of 5 degrees. Placed on top of it drainage pipe, wrapped in geotextile, and gravel again on top. Geotextiles will prevent clogging of drainage holes. Ground water will flow through the pipes into the drainage well.

Foundation drainage system

With knowledge of the advantages and disadvantages of insulation, you can choose the material that suits you best. Properly spend construction works, and you will provide comfort and warmth in the house for a long time, as well as a long service life of the building.

Insulation of the foundation with polystyrene foam: video

Insulation of the foundation of a private house: photo

Owners of private houses, in an effort to make the house warm, sometimes pay attention only to walls and ceilings. At the same time, they forget that the insulation of the foundation is an equally important point.

As a result, there are problems of cold floors and excessive heating costs. Once having invested strength and means in isolation bearing base, you can save an impressive amount on heating bills.

What caused the need for thermal insulation?

A significant part of the cool air enters the room through the foundation. Therefore, the designs of many buildings are built in such a way as to raise the floors above the ground. Warm, heated air rushes up. When the roof is not insulated, heat seeps out. And the room is filled with cold air, which penetrates through the floors of the building. Therefore, the need for thermal insulation of the supporting base is obvious. If the walls are in frozen ground, the room will have to be constantly heated.

When it comes to maintaining heat in an old house, it should be remembered that all components of the system must retain heat: the foundation, walls, ceilings and roof. If at least one thing will release heat, then the whole building will not be able to keep it at a high level.

High-quality insulation of the foundation can reduce the impact of groundwater and cold on the base of both wooden and stone buildings.

Isolation methods

All methods for warming are usually divided into two types. The first - before pouring the foundation, the second - the insulation of the finished building. The first option is preferable and it is he who is used more often. In harsh winter conditions concrete foundation insulated on both sides.

Concrete is known for the almost complete lack of thermal insulation, it cools easily and heats up just as easily. During construction, they use both a heater, which is mounted directly into the formwork, and a special fixed formwork. Such panels are many times more expensive than simple ones, but the amount of costs is lower than the price of dismantling a simple formwork and subsequent insulation.

Insulation of the foundation of an already operated house is a complex and responsible undertaking. In cases where the building was built with insufficient foundation depth, freezing of the soil under it will be very strong. In such situations, for thermal insulation, the foundation is dug both inside and outside, and later a heater is laid. At the same time, to prevent freezing of the floor in the basement of the old building, it is sprinkled with expanded clay.

Already long years the most commonly used methods of foundation insulation remain unchanged: with the help of earth, expanded clay or expanded polystyrene.

Earth insulation

This option is the most economical, despite the impressive volumes of sand that will have to be unloaded and leveled. The method lies in the fact that the earth is filled up to the level of the future floor, as a result, the entire basement and foundation are underground.

Ground insulation is carried out before the construction of the house. Be sure to provide a ventilation shaft for the basement.

Advantages of the method:

• insulating with soil, you do not have to buy a heater;
• the house will not freeze through the basement.

Disadvantages:

• large volumes of earth and sand will have to be leveled;
• soil - a weak heat insulator;
• the walls of the foundation will let the cold into the room, albeit in smaller quantities.

Thermal insulation with expanded clay

One of the cheapest and most effective methods. Sometimes builders combine insulation with soil and expanded clay.

In the process of pouring the foundation, expanded clay is placed in inner part prefabricated formwork. This method is used for both wall and floor insulation, in both cases it is quite effective. Unique properties expanded clay are enclosed in its porous structure, thanks to which it does not let in moisture and cold, retains heat well. The only losses occur due to the fact that the cavities between the granules are filled with cement, and it is a conductor for cold.

Expanded clay insulation is often used for strip foundation. With a low-depth foundation, the material is used to insulate the floor in order to completely get rid of the freezing of the earth in the basement.
If the insulation occurs after pouring, then the formwork is usually used the lightest, since expanded clay is practically weightless. Sometimes slate sheets are used as formwork.

Expanded clay is a fragile insulation. When used for floor insulation, mineral wool and a film are laid on expanded clay to protect against moisture.

What about styrofoam?

When deciding how to properly insulate the foundation, often the choice falls on the foam insulation method. This is a versatile and affordable material.

Styrofoam is sold in sheets that are easy to install. Therefore, its use allows you to do all the work with your own hands.

Waterproofing

Before fixing the sheets of insulation, it is important to waterproof the surface. There are many waterproofing methods:

• applying multiple layers bituminous mastic;
• waterproofing with roofing material;
• surface plastering;
• applying special penetrating compounds.

Slab laying

After providing waterproofing, expanded polystyrene sheets are mounted on the surface to be insulated. Sheets are laid from the bottom of the foundation to the level of the future floor. The insulation is fixed with the help of special adhesive compositions, which are applied pointwise to its surface. It is necessary to lay sheets of polystyrene foam close to each other in order to obtain monolithic surface. The seams between the insulation boards close up mounting foam.

Expanded polystyrene eventually collapses under the influence of sunlight, so it should be securely covered from above with facing panels.

Thermal insulation around the perimeter

Before you insulate the foundation around the perimeter, you need to remove the soil along the entire base of the building to a depth of about half a meter and a width of about one and a half meters. After creating the trench, the sand is backfilled by about 20 cm, it is carefully compacted.

Styrofoam plates are installed on the "sand cushion". For added reliability insulation materials fastened with special adhesives, for example, bituminous mastic. The joints formed between the plates are blown with mounting foam. You can also fill the gaps with cold-applied bituminous mastic.

After fixing the insulation and completing the other related work, sand is again covered with a layer of at least 3 m.

Corner zones of buildings lose more heat, how flat surfaces. Therefore, in these places you should use a larger (one and a half times) layer of polystyrene foam.

The advantages of perimeter insulation with polystyrene foam are as follows:

• the design of the insulated foundation is protected from the appearance of deformations and cracks;
• at the same time the basement is also thermally insulated;
• polystyrene foam has good performance properties, which makes it a fairly durable material.

Expanded polystyrene can also be used for internal insulation old house if it is impossible to carry out external insulation. To do this, the walls are glued from the inside with foam boards. A room insulated in this way can become a full-fledged room.

The use of penoplex

Penoplex material is more perfect than polystyrene. Insulation of the foundation with foam plastic prevents its deformation, the building will last longer.

Penoplex has a structure with closed pores, so that it is not subject to the destructive action of water. Other important advantages of the material are its strength and low thermal conductivity.

How is the installation carried out?

Penoplex can be installed only a week after the implementation of waterproofing, the methods of which were described above.

Penoplex is produced in the form of plates with grooves of a certain configuration. These grooves provide a very tight fit of the plates to each other without gaps.

Fastening is carried out by special adhesive compositions. You need to choose only those compounds that are not capable of destroying the insulation. The glue is applied pointwise, gradually processing small surface areas. The plate is applied to the foundation and pressed for 40 seconds. After gluing the plate, proceed to next section. The process is continued until the entire surface of the base of the building is insulated.

It is necessary to glue the plates so that they protrude 35–50 cm upwards. After the installation is completed, the resulting voids are covered with non-porous materials. At the end they carry out thermal insulation soil around the perimeter.

High-strength sealed board with PU foam

Polyurethane foam or PPU - modern construction material, which has many advantages. It is characterized by low thermal conductivity, strength, durability and environmental friendliness. It is easy to work with polyurethane foam - no additional fasteners are required for installation, its application to the surface is quick. PPU has high waterproofing properties that prevent moisture from entering, thereby protecting the building.

The main advantage of using polyurethane foam as a heater is the inability to spoil the result - the final coating is always obtained without cracks, bumps and joints.

How to work with polyurethane foam?

The foundation is insulated with polyurethane foam by spraying the insulation onto the surface using special installations. The resulting foam is firmly connected to the base of the structure, filling all cavities. It turns out a high-strength plate, very hard and tight. Since the material has a closed structure and air layer is missing, then condensation cannot appear in such a product.

Thermal insulation of the foundation with polyurethane foam is the most effective method. It is suitable for both new buildings and for thermal protection of an old house. But the cost of such insulation is high and it is impossible to carry out the work on your own, since special equipment is required.

There are many options for waterproofing and warming the foundation, it remains only to choose which one is most suitable.