The correct scheme and dimensions of the insulation of the foundation. How to insulate the foundation from the outside. Excavation work

Foundation thermal insulation- the most important stage in building a house. It is as important as wall insulation. Especially in harsh climatic conditions, characterized by freezing of the soil to a great depth.

An uninsulated foundation is the cause of serious heat loss, it is dangerous for freezing and, following this, the destruction of underground structures.

Thermal insulation of the foundation from the outside significantly reduces heat loss, and serves as a reliable protection for the foundation of the house from the influence of groundwater and negative temperatures.

Freezing is especially dangerous for building foundation structures, on which houses are usually built.

To avoid the negative impact on the foundation of the external environment, they resort to measures such as waterproofing the foundation and its insulation.

The largest volume of cold air enters the building through the foundation. And if the house has a basement used for any functional purposes (, billiard room, laundry), then special attention should be paid to it.

An unheated basement does not need thermal insulation. But it is necessary to insulate the basement of the foundation, especially in houses built on piles, in order to reduce heat loss at the floor level of the residential floor. Insulation contributes to the preservation of heat in the house, cutting off the path to the house of cold air.

In addition, the foundation insulation layer plays a partial role in its waterproofing.

So, the thermal insulation of the foundation:

• reduces heat loss;
• reduces the cost of;
• reduces the impact of soil heaving on the foundation;
• stabilizes the temperature inside the building;
• prevents the formation of condensate on the internal planes of the walls;
• performs mechanical protection of waterproofing and foundation structure.

Which insulation is more effective

There are two ways to insulate the foundation - insulation at the pouring stage and subsequent insulation produced after the concrete casting has solidified. The first one is the most preferable.

The most correct approach to the insulation of the foundation during the construction process is fixed formwork. It is a structure into which a solution is poured. At the stage of its solidification, it plays the role of an ordinary formwork, but after that it is not removed, but remains as a layer of insulation.

Execution technology:

1. First of all, a pit is prepared from the outside of the perimeter.
2. At the bottom of the pit, they do: geotextiles are laid, covered with rubble, on which a perforated pipe is placed on top, and then again a layer of rubble. Pipes are tied and taken to the well.
3. clean and dry, and then perform it.
4. The prepared trench is covered with sand or rammed in layers.

Warming with mastics

A certain amount of insulation can be achieved during waterproofing work. For example, the vertical walls of the foundation are recommended to be covered with several layers of bituminous mastic. This isolates cracks and small holes at the joints of the plates through which heat escapes.

After that, a rolled waterproofing material is applied to the side surfaces. It will be an additional layer of thermal insulation.

Foundation insulation with mineral wool

This method is used extremely rarely, because for its implementation it is necessary to build a frame, provide good protection of the mats from getting wet, and also build a protective wall from any finishing materials.

Execution technology:

1. The surface is cleaned and dried, defects are eliminated.
2. It carries out a frame for mineral mats from a metal profile.
3. Heat-insulating mats are laid on the frame and fixed. The surface of the insulation is covered from external moisture with a vapor-permeable wind-hydroprotective film.
4. Protective walls are erected from or a frame.

Insulation of the foundation with foam

A modern and very effective method that qualitatively insulates the walls of the foundation. Its advantage lies in the high thermal insulation characteristics of the material, ease of work, resistance of the material to mechanical damage and stress.

The disadvantage is the need for surface preparation, protection of the foam from rodents, as well as suitable waterproofing.

Execution technology:

1. The foundation is dug, cleaned and dried. Remains of bitumen, grease, oil are removed from its surface.
2. Produce .
3. The slabs are laid on an adhesive sold as a dry mix.
4. The surface of the foundation is protected with a reinforcing mesh from rodents, laying it on the same glue. Then the lower part of the foundation is backfilled with sand, and the upper part is fixed with the help of dowels intended for this.

Insulation with polyurethane foam

This is a modern material for thermal and waterproofing, both outside and inside the room. For its use, it is necessary to have special equipment that, under high pressure, sprays polyurethane foam layer by layer onto the required surface. The thickness of the polyurethane foam layer should be 5 cm. A similar insulation effect can be achieved using a 12 cm thick polystyrene foam layer.

The advantages of polyurethane foam insulation are:

• longevity;
• high adhesive properties;
• no need for additional vapor and waterproofing.
• low vapor permeability;
• seamless coverage;
• reliability;ne
• low thermal conductivity;

Among the shortcomings are the need to use special equipment and the gradual destruction from solar exposure.

Insulation with expanded polystyrene

Extruded boards almost do not absorb and do not let water through. Therefore, this material retains its thermal insulation characteristics for a long time.

Advantages of insulation with this material:

• long service life;
• strength;
• constancy of thermal insulation properties;
• "inedible" for rodents.

When insulating with polystyrene foam, remember that:

• the corners of the building need "reinforced" thermal insulation,
• to insulate the soil around the perimeter of the building, a layer of expanded polystyrene must be placed under,
• the width of the blind area should correspond to the depth of freezing of the soil in these climatic conditions.
• before insulating the foundation of the house, the surface of the walls must be leveled and waterproofed on it;
• the fixation of the plates is carried out by applying glue to them or by “melting” the waterproofing, to which the plate is then pressed and held for the time necessary for the plate to solidify.

How to insulate a shallow strip foundation

Mounting of plates should be started from the bottom, the rows should be joined end-to-end. The thickness of the plates must be the same. The vertical seams of adjacent rows should be staggered.

Seams between plates with a thickness of more than 0.5 cm must be filled with mounting foam.

Glue must be selected based on the waterproofing material. When using rolled and mastic materials based on bitumen, bituminous mastics are used as glue, which do not contain aggressive ingredients for expanded polystyrene.

Before insulating the foundation from the outside, be sure to wait for the bituminous waterproofing to dry completely.

Glue on the plates located below the soil level is applied pointwise, which allows the condensate between the insulation and the foundation wall to drain down.

The slabs located in the ground are attached only with glue and pressed against a layer of earth.

For slabs that are above ground level, it is imperative to use fixing dowels.

How to insulate a monolithic foundation slab

For the most effective thermal insulation of the floor and basement, you need to take care of the insulation of the base plate of the foundation.

To do this, the insulation is laid on top of the waterproofing layer. Then, when used for pouring a power floor, knitted reinforcement is used, while it is enough to cover the heat insulator with plastic wrap with an overlap of 10-15 cm and gluing with double-sided tape.

When using a welded reinforcing structure, it will be necessary to make a protective screed from either a cement-sand mortar on top of the film, and already perform welding work on top of this.

It should be noted that it is more correct to engage in laying and warming the foundation in the warm season, with a fairly high air temperature and not strong humidity.

Insulation of the foundation from the outside - the necessary work to ensure the safety of heat in the room, protection from moisture, saving energy.

The best solution is to carry out all the manipulations during the construction of the building, but the plan can be carried out after the construction of the building is completed.

For each individual case, its most convenient algorithm has been developed, according to which the foundation of a private house should be insulated from the outside, and materials have been selected to achieve the highest quality and most effective insulation of the foundation.

Variety of materials for thermal insulation

Insulation of the foundation basement from the outside is performed:

Each of the listed materials is ideal for arranging high-quality insulation of the foundation of the house from the outside.

In all cases, it should be remembered that the thermal insulation of the foundation is not necessary in order to increase the flow of warm air penetrating into the room. Every effort should be made to prevent the penetration of cold into the building.

The insulation must be moisture resistant

If you want to avoid material costs and save as much as possible on arranging a warm foundation for a house, many owners of private buildings carry out all the work using the land. The method of backfilling allows you to achieve a positive result, but modern materials guarantee that a reliable and high-quality warm foundation will be created.

When deciding how to insulate the foundation, you must first choose the method of performing the work, because the heat-insulating material can be fixed outside the building or on the inner surface of the base.

Depending on which insulation was chosen and on the method of insulation, the materials for insulation of the foundation are selected, which are necessary to achieve the goal.

You can buy everything you need, knowing how to properly insulate the foundation of a residential building in order to provide the owners with comfortable living conditions. The materials used should not be deformed under the influence of aggressive environments, pass moisture. They must be distinguished by a long service life, resistance to temperature extremes, low weight, strength and high density.

Given all the requirements, experts recommend using as a heater:

• penoplex;
• extruded polystyrene foam;
• sprayed polyurethane foam.

Before you insulate the foundation of the house from the outside with your own hands, it is necessary, in strict accordance with all the requirements, to prepare the surface of the base, on which the heat-insulating material will later be fixed.

For spraying polyurethane foam, you will have to invite professionals with equipment

Spraying polyurethane foam requires the participation of craftsmen, the use of special equipment, in addition, such a coating is afraid of exposure to ultraviolet rays.

That is why the owners of suburban buildings seek to insulate the foundation of a private house with the help of penoplex, which is cheaper, but strong enough and of high quality.

It is also popular to insulate a house from the outside with polystyrene foam because it does not require the use of special fasteners. For its reliable fixation, it is enough to use an adhesive composition similar to mounting foam. This is foam cement.

Execution of work

Knowing how to insulate the foundation from the outside, you can choose the most suitable material and prepare the foundation correctly.

This stage requires special attention, since the algorithm for performing work depends on the features of the constructed skeleton. In cases where we are talking about pile or columnar, then the construction of a brick wall will be required to fill the gaps between already installed piles or pillars:

1. You will have to dig a trench around the entire perimeter of the house, equip a sand cushion at the bottom of it, which will need to be carefully tamped.
2. The second stage is the laying of a reinforcing mesh, on top of which a concrete base is poured.
3. After 10 days, the concrete will gain strength and you can start laying.

Another option that is being considered when deciding how and how to make a warm foundation is to use slag or expanded clay. Having decided how to insulate the foundation of the house, you can begin to perform calculations and purchase materials.

Surface preparation begins with sealing all detected defects on the outer surface of the foundation base of an already constructed building.

For this purpose, you can use a sand-based plaster mixture, and the largest gaps can be filled with mounting foam. Primer is applied over the plaster. It should be a deep penetration compound that provides high-quality adhesion of materials. For more information about the insulation of the base, see this video:

Having made the final decision on how to insulate the foundation from the outside, you need to take care of arranging high-quality waterproofing. To process the foundation from the outside, coating materials such as bitumen mastic are needed.

Outside, the foundation is insulated in two layers

Now it's time to attach the first layer of polystyrene foam. It is necessary to apply an adhesive composition on it and press it firmly against the surface that we insulate.

All seams and joints are foamed, and after the foam has hardened, it is cut off and the entire pasted area is covered with reinforcing mesh to create a second layer of plaster.

To insulate the foundation from the outside, two layers of polystyrene foam are required. The final decoration will be:

• plates;
• panels;
• plaster and paint;
• tile.

Before choosing the best way to insulate the foundation of a built house, you need to decide how and how to insulate the area under it. To do this, you should know how to insulate the foundation, given that a lot depends on the quality of the floor. The penetration of cold air is possible from the underground or basement. Treatment of old floors, during which it is good to use modern insulating materials. For more information about the stages of work, see this video:

Considering various methods and options for warming the foundation, you can be sure that this process is not as simple as it might seem.

Failure to comply with the nuances of the technological process causes a violation of the microclimate in the room, heat loss, unjustified energy costs.

However, knowledge of the features of each individual structure and the building materials used for its construction will help to succeed. So, for example, a concrete base is insulated only from the outside, because cold air practically does not pass through it, but the false base of a pile foundation requires mandatory insulation of the inner surface.

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, it accounts for a fairly large loss of 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 in a warm room, a 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 were used. 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

Building material penoplex

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 building a 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 insulating and waterproofing materials should be laid there. 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

Inexpensive and fast way - 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, mineral wool and a film are laid on top of the insulation as a 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 of wooden housing construction will be insulated, in a region where it is very cold in winter and the ground freezes strongly and deeply, it is better to use foam plastic instead of foam plastic for this purpose. It is much stronger, because it can withstand the pressure of frozen soil and will not crumble.

Internal insulation

Schematic representation of the correct insulation

You can insulate the foundation from the inside. This can be done by simply lining the walls of the basement with 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.

You can independently insulate the foundation of private housing construction, both from the outside and 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.

Today, the topic of how to insulate your home is more relevant than ever. In order not to waste money by warming the soil, it is easier to thoroughly insulate the most consumable part of the building once - the foundation and the basement of the walls. High-quality insulation of the foundation from the outside will require certain costs, but, fortunately, you can do most of the work yourself. If you save, then on someone's services, and not on the quality of the material used.

Work on the insulation of the foundation of the house from the outside by the hands of an amateur

To get rid of the troubles associated with hypothermia and freezing of the foundation system, you can use several options for installing thermal insulation:

• Increase the efficiency of the drainage system and thereby reduce the level of moisture in the soil outside the building. This will automatically reduce the thermal conductivity of the soil adjacent to the foundation walls and reduce heat loss;
• Use the classic do-it-yourself insulation method, lay the insulation on the basement sections of the walls, cover the foundation blocks with foamed heat-insulating material;
• Perform thermal insulation of the joints between the floor slabs of the basement, blind areas, lay the backfill heat-insulating mass in the sinuses of the foundation;
• In the case of insulating a columnar foundation with your own hands, it is necessary to additionally block the intakes with heat-insulating material or masonry that retains heat in the space under the building.

Warming the foundation with your own hands

Conventionally, the insulation of the basement basement from the outside can be divided into two groups according to the scope of work: the first is the provision of thermal insulation due to the soil, the second is the provision of heat savings by laying insulating materials on the structure of the foundation and the basement of the walls.

Filling forms of thermal insulation

Ground thermal insulation has a number of characteristics that, at first glance, are not obvious, but, nevertheless, are very important for effective home insulation:

1. Skillfully organized drainage from the surface of the soil adjacent to the pavement of the foundation of the house allows to reduce the water saturation of the soil several times, which means that the thermal conductivity of the upper soil layer, 50 cm thick, which makes the main contribution to heat loss, will decrease at least twice. This will be much cheaper and more efficient than covering the blind area with a huge amount of polystyrene foam;
2. Effective drainage of accumulating groundwater, its diversion from under the base of the building and the soil layers adjacent to the outside, properly laid barriers and insulating membranes in the base of the foundation can reduce heaving and water filling of the soil by 3-4 times;
3. The most effective of the ground methods of thermal insulation is the backfill form of insulation of the foundation structure. If polystyrene foam materials glued onto the concrete surface of the foundation can be destroyed, chipped, crushed by soil in a very severe frost, then filling forms are practically insensitive to such problems.

Foam glass is considered one of the most effective bulk-type heat insulators. The material has a high hardness, comparable to the hardness of concrete, and excellent heat-insulating characteristics. If you make a ditch or trench outside with your own hands to the depth of the foundation and fill the formed cavity with foam glass granules, this will dramatically reduce the heat loss of the foundation, improve water drainage, since the backfill layer plays the role of a sponge, and increase the stability of the foundation. In addition to conventional granules, manufacturers suggest using compositions of glass granules and bituminous filler to insulate surfaces outside the foundation blocks.

The currently used expanded clay or vermiculite fillings are not so effective in insulating the base of the house, but due to the low price of the material, the width of the insulating layer outside the foundation can be increased several times.

Traditional methods of thermal insulation and insulation of the foundation of the house

If you need to perform thermal insulation outside the foundation blocks as soon as possible, instead of the traditional gluing of polystyrene foam boards on the outside of the foundation, use concrete surface insulation with polyurethane foam. A layer of foamed polyurethane foam is easily applied with special equipment on the most humpbacked and uneven surface of concrete blocks.

If the laying of polystyrene thermal insulation took days and weeks, then the application of polyurethane foam, even with your own hands, can be done within one working day. Laying a PPU-based insulation system to a depth of 30 cm to 2 meters creates comfortable conditions for maintaining the performance of insulating materials. Firstly, there is no ultraviolet radiation from the sun, and secondly, the minimum temperature difference is maintained. The cost of such insulation is somewhat higher than traditional slabs, but it can be used outside as a means of insulating any, the most complex and problematic foundations.

For relatively flat surfaces of the outer walls of the foundation, tiled heat-insulating materials are most often used. Of these, they collect the insulation of the outer walls of the foundation, the basement and the blind area, as in the video:

Installation outside of the insulating material can be carried out both on a layer of bituminous waterproofing and without it. In the first case, the blind area is dismantled, the outer surface of the foundation walls and basement floors is mechanically cleaned of all contaminants, mortar influxes, irregularities, and then treated with a waterproofing composition. Depending on the characteristics of the soil, waterproofing can be strengthened with your own hands by sticking roll insulation of polymer films.

Usually, the manufacturer of insulation materials recommends plastering and leveling the walls from the outside, thereby ensuring the tightest and most even fit of the insulation system to the foundation walls. After waterproofing outside the foundation walls, the structure is lined with expanded polystyrene plates. To fix the plates on the outside, it is most convenient to use bituminous mastic or acrylic glue.

Outside the laid heat insulator, a metal mesh is mounted. A layer of protection can be applied over the laid heat-insulating cake. Most often it is a durable waterproof plaster that protects the surface of expanded polystyrene from the destructive action of soil or mineral backfill. In the same way, insulation is laid on the basement surface of the walls and on the blind area.

If you need to insulate a columnar or pile foundation, you can reduce heat loss if you fill the soil around the supports to a depth of up to 30 cm with a dense, heavy mass based on foam glass. In this case, the main part of the insulation should be carried out on supports located outside the building. This backfill is best combined with a viscous and dense mass like resin or roofing bitumen. Thus, the amount of moisture entering the base of the supports is sharply reduced, and the level of soil freezing outside the supports is reduced.

In addition to insulating the supporting elements, it is necessary to insulate the space under the building. The simplest method is to hang a false plinth on the foundation grillage. The heat emanating through the bottom of the building will partially warm up the piles themselves or the support pillars and part of the air space below it. If the inside of the columnar foundation is covered with a layer of expanded clay, and the false plinth covering the structure from the outside is made in the form of sandwiches made of wood and polystyrene foam, then an acceptable level of insulation can be achieved.

Conclusion

When taking measures to insulate a building, relatively little attention is paid to such forms as deep drainage of groundwater, drainage and drainage of soil, improvement of the heat-insulating properties of the earth adjacent to the foundation structure. It is believed that it is easier and faster to insulate the foundation from the outside on your own by sticking foam sheets or applying a foamy polymer mass. However, the use of ground thermal insulation can be no less effective than the use of polymeric thermal insulators.

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Insulation of the foundation of a wooden house outside

House foundation insulation performs several functions: not only does it prevent heat from escaping through the base of the house and reduces heating costs, but it also works as waterproofing and protects the foundation from frost heaving of the soil. Without thermal insulation of the foundation on the first floor of the house it will be cold and damp. Practice shows that warming the foundation of a wooden house from the outside solves all these problems. It is much more effective than insulation only from the inside. In some cases, the thermal insulation of the foundation is done both from the inside and outside.

Why is it better to insulate the foundation from the outside

Experts believe that this option is preferable for several reasons.

Insulation of the foundation from the inside is recommended to be done only with good ventilation of the basement. Otherwise, humidity will increase in the basement, in addition, the inner layer of insulation shifts the dew point, because of this, the entire base is exposed to moisture and cold. This reduces its service life, leads to rapid destruction.

Wooden houses are usually placed on a columnar, pile or strip foundation. These types differ in their structure, which means that their insulation is done in different ways.

For thermal insulation of any type of base, extruded polystyrene foam (EPS, penoplex) is used. It is durable, has a long service life, does not emit toxic substances, is resistant to compressive loads, does not let water through, mold and moss do not start on it. It is easy to use, attached to the foundation with special glue or with the help of umbrellas, the foam boards have a convenient connection with each other.

Strip foundation

First, they dig a trench to the very bottom of the foundation. Its width is 80-100 cm, since the blind area is also insulated at the same time. If the foundation is of a recessed type, then the first 40 cm in depth they dig a trench to the width of the blind area, and then, to save energy, you can make it 50 cm wide.

If the house was built some time ago, then cracks may appear on the concrete. They are covered with a mixture of cement with building glue, if the cracks are small. Larger damages are sealed with cement mortar.

The next step is waterproofing. To do this, the surface of the foundation tape is covered with bituminous mastic, on which roofing material is glued. The sheets are glued overlapping, the seams are additionally coated with mastic. More modern roll materials are also used, such as self-adhesive roll waterproofing.

After that, the insulation is glued. Although penoplex is often attached to dowels, it is still better to give preference to glue or liquid nails - they do not violate the integrity of the sheets. How to insulate the strip foundation with polystyrene foam, look at the video:

The joints between the sheets are foamed with liquid foam.

After installing the insulation, geotextiles are glued to it. It will reduce the effect of soil heaving on the heat-insulating layer.

Next, the trench is filled up to the level of the blind area. Sand and small gravel are poured under the blind area with a layer of 0.15-0.2 m, the pillow is carefully rammed. This layer will protect the blind area from the loads arising from the movement of the soil. A layer of dense insulation is placed on top. The same penoplex is suitable due to its resistance to compressive loads. Concrete is poured from above, it can be additionally reinforced with a mesh.

Attention! To reduce the effect of frost heaving, a layer of insulation is placed at the level of the sole of the foundation. The most effective combination of foam insulation to the level of the walls in combination with the insulation of the blind area at the level of the sole.

pile foundation

How to insulate the foundation of a wooden house on stilts? For a pile foundation, as well as for a column foundation, a fence is constructed - an imitation of a basement, closing the space between the piles. This will reduce heat loss to some extent. For effective thermal insulation of a pile foundation, you need:

• build a plinth
• insulate it inside and out
• insulate the floor.

You can build a thin brick wall around the perimeter, or you can use slab materials that are attached to the crate. If the option with a brick wall is chosen, a shallow concrete strip 20 cm thick must be poured on which the wall will be built. It is not necessary to use ceramic bricks, you can take foam blocks or foam glass.

Important! Do not make the space under the floor airtight. After the installation of the intake, it is necessary to make air in it - ventilation holes measuring 10-15 cm. They are placed evenly on all sides of the house so that they are opposite each other.

For fastening panels or slabs, a crate is made of a metal profile or wooden bars. As an outer skin, for example, DSP can be used. There are already insulated facade panels that perform a decorative and heat-insulating function.

A shallow trench is dug under the skin, where a layer of sand (2-3 cm) is poured, expanded clay is poured on it, and the trench is covered with earth from above, so that there is no gap between the soil and the skin.

The video shows the device and the insulation of the false base:

To insulate the pile foundation, use

• styrofoam,
• Styrofoam,
• foamed glass blocks
• liquid penoizol (carbamide foam).

Most often, the first two options are used. Foamed glass is too expensive for a private house, and liquid penoizol requires special equipment or the work of specialists, which is also expensive. With your own hands, it is easier to insulate the foundation in a wooden house with polystyrene foam or polystyrene foam from the outside. The main thing is that the material does not absorb water, so mineral wool is not suitable here. The foam is glued to the adhesive foam, for reliability, additional wooden planks can be used, which are attached with self-tapping screws to the crate through the foam.

Important! It is advisable to attach polystyrene foam or polystyrene to the guides, and not between them. In this case, there will be no gaps and cold bridges, since the thermal conductivity of wood, and even more so of metal, is greater than that of polystyrene.

It is possible to insulate the pile foundation with polystyrene foam or EPS from the outside or from the inside. If this is done from the outside, then the insulation is attached before finishing. If the finish is already attached to the base, for example, if these are facade panels or DSP boards, then the insulation is mounted from the inside.

Floor insulation

To insulate the floor in a wooden house on a pile foundation, I usually use mineral wool, basalt wool, polystyrene foam, polystyrene, liquid heaters.

Thermal insulation is done during the construction process and floor installation as follows:

1. They make a draft floor on which the insulation will lie.
2. A vapor barrier and windproof layer are first placed on the crate.
3. Then put the heater.
4. Vapor barrier and waterproofing are placed on top.
5. After that, a finishing floor is constructed.

The mineral wool layer should be at least 10 cm. If it is necessary to put cotton wool in two or more layers, this is done in a checkerboard pattern (so that the seams do not match). The video shows floor insulation in a house on a pile foundation.

For waterproofing, you can use glassine, polyethylene, isospan, wind-moisture protective film. Polyethylene is the cheapest option, but it's not the best.

Important! In a house made of wood on a pile foundation, it is imperative to treat all wooden floor elements with an antiseptic.

The insulation of a columnar foundation differs little from the insulation of a pile foundation; the same materials and techniques are used.

Conclusion

Insulation of the foundation helps not only to keep warm and reduce heating costs, but also protects the foundation, makes it more durable, performs a waterproofing function, and prevents dampness in the house. Wooden houses are usually made on a strip or pile foundation, which is quite easy to insulate with your own hands.

bouw.ru

Do-it-yourself insulation of the foundation from the outside

Any of us wants to have a warm and comfortable home, but not everyone thinks that in order for the house to be warm, it is necessary to insulate not only doors, windows, balconies, but it is better to start insulation from the foundation. By insulating the foundation of a log house, you can significantly reduce heat loss and reduce energy costs in winter.

What is thermal insulation, and its types.

During the construction of a wooden house or a bath, one of the most important tasks is the thermal insulation of the foundation, which can be both external and internal.

Each person decides for himself when and with what materials to insulate his house.

Consider the advantages of external thermal insulation:

1. regardless of the material used for thermal insulation and the design of the foundation, any external thermal insulation prevents the penetration of low temperature into the room, that is, it is a “protector” of the foundation from freezing;
2. savings (approximately a third of the payment for heating is reduced);
3. prolongs the service life of communications;
4. extends the operational life of the foundation of a wooden house;
5. protects against groundwater and moisture ingress into the foundation (foundation waterproofing);
6. protects the foundation (lower and basement) from seasonal temperature fluctuations.

Warming Pie Diagram

Sometimes, it is impossible to insulate the foundation from the outside with your own hands, then you should insulate the foundation from the inside.

Consider the benefits of insulating the foundation from the inside:

1. forms the microclimate of the basement and the whole house;
2. protects from groundwater;
3. prevents the accumulation of condensate.

But internal thermal insulation also has a number of negative points, these are:

1. it does not prevent freezing of the foundation;
2. as a result of temperature changes, deformation of the foundation is possible, cracks appear, the soil may swell.

Consider how to carry out work on the internal insulation of the foundation.

To carry out such work, there are various materials, these are: polystyrene foam or polystyrene foam and polyurethane foam.

You need to know how to work with each of them correctly.

Styrofoam is a rather cheap material, but when working with it, one must remember that it crumbles, it must be cut out, and then glued with special mastic. It will take a lot of time to install it.

Polyurethane foam is easy to work with. It is used for basement and underground insulation. Produced in the form of a spray can.

Use it by spraying the contents of the can onto a surface that needs thermal insulation (in this case, the basement floor). Also spray it on part of the basement wall. If you want to more reliably protect the basement from cold and moisture, then polyurethane foam is sprayed on both the floor and the ceiling. After it hardens, it is necessary to carry out finishing work on the walls and floor. First they are puttied, sanded, and then veneered. For this, drywall may well be suitable.

Foundation insulation. Necessary materials. Thermal insulation methods.

For external thermal insulation of the foundation, foam plastic, polystyrene foam and polyurethane foam are used.

In order to insulate the foundation from the outside with your own hands, follow this instruction, which will tell you what materials you will need and how to work with what material.

It looks like a warmed foundation with polyurethane foam

The method of working with polyurethane foam is the same as for internal insulation, with the only difference being that in this case it is necessary to completely expose the foundation of the house. For this:

1. Along the perimeter of the house, it is necessary to dig a moat, the depth of which corresponds to the depth of the foundation, and the width should be up to approximately 0.50 m.
2. Clear the outer foundation from the ground and level if necessary.
3. It is necessary to wait until it dries, clean the surface of the foundation of dust and use bituminous mastic and roofing material to make waterproofing.
4. For more reliable protection against moisture, the joints of the insulation must be filled with special foam.
5. To protect the foundation from groundwater, the top sheets of insulation are raised 30 - 40 cm above the ground level.
6. After the work described above is completed, sand is poured onto the bottom of the dug ditch (layer thickness 10–15 cm), and the remains of insulation are placed on top and sprinkled with gravel (50–60 cm).
7. Then they sprinkle it with earth or sand from above, or pour it with concrete (the blind area).
8. Also, then you can lay a mosaic of ceramic tiles or marble.

After the advent of polystyrene foam and polystyrene, expanded clay was used less and less for thermal insulation of houses.

The method of working with expanded clay is almost the same as with foam, but there are differences:

1. when insulating the foundation with expanded clay, a ditch must be dug wide - about 1 m,
2. then lay waterproofing and cover it with a sufficiently thick layer (low thermal conductivity) of expanded clay, or rather, its granules.
3. Further, as a waterproofing, roofing material is laid and sprinkled with a layer of sand or earth.

Types of foundations and methods of their insulation.

In order to properly perform outdoor work on the insulation of the foundation with your own hands, you need to know what types of foundations exist and how to properly insulate them.

Consider the existing types of foundations for a wooden house (shallow, columnar, monolithic, tape, pile) and methods of their insulation.

Such a foundation is made of brick or concrete.

A shallow foundation can be of a tape or slab type, so the shrinkage of such a structure is uniform.

When insulating such a foundation, it must be borne in mind that if the width of the insulation is greater than the depth of freezing of the soil, then under the insulation (which is located at a distance of 1-1.5 m), a zone of soil is formed that does not freeze.

The columnar foundation is made of pillars dug to a depth of 2m (below the freezing depth). Subsequently, a house is placed on the upper ends of the pillars and therefore their level should be the same (40 - 50 cm) - this is the floor level of the house. Such a distance is necessary to avoid getting wet and subsequently rotting a wooden house.

To fill a columnar foundation, there are two technologies:

1. They dig a hole 40 - 50 cm larger than the desired post, make a formwork, put reinforcement or a frame, pour it with concrete. After drying, the formwork is removed. This is how a monolithic reinforced concrete pillar is made.
2. With the help of a special drill, you can independently drill a widened well and fill it with concrete.
3. read more in the article: columnar foundation with a grillage.

A columnar foundation is suitable for building buildings on slopes, but you cannot build houses with such a foundation on groundwater. It is difficult to insulate such a foundation, more precisely, you will have to make a thick base, you will have to carefully insulate the wooden floor.

The screw foundation is almost the same as the column foundation, but instead of monolithic pillars or metal pipes, piles are used here that twist into the ground. Insulation of such a foundation is also problematic.

A monolithic foundation is a homogeneous slab under the entire house, but it should be noted that there will be no basements in the building. Houses with such a foundation are called floating, since under the influence of groundwater the whole house moves and it does not skew and land. A monolithic foundation can be shallow and deeply buried. For a shallow foundation, only the top layer of soil should be removed (that is, it should be shallowly buried), and for a deep foundation, a foundation pit should be dug.

The strip foundation for a log house is a closed structure that runs under all the walls of the house. Such a foundation is suitable for any type of structure in which there will be a basement in the future. Such a foundation can be made monolithic or folded from concrete blocks. A monolithic strip foundation can be made independently, but it should be noted that it is very massive for wooden houses.

Helpful Hints

• For external and internal insulation of the foundation, it is better to use polystyrene. Compared to other heaters, it is more expensive, but more reliable, since it completely covers the surface without seams and gaps.
• To insulate baths, it is better to use foil foam as a heater, since the room lined with this material looks spectacular and comfortable.

And in conclusion

Warming the foundation from the outside with your own hands is not an easy task, but a doable task and everyone can do it.

If you want to save time and costs for these works, then first find out the prices for a particular building material, take into account the type of foundation, and only after that purchase the necessary building material in the right quantity.

Also, after you carry out the insulation of the foundation with your own hands, do not forget to insulate it from the inside as well (for better heat preservation in the house). To do this, also spare no expense and purchase quality material.

With the implementation of the above works, it is better not to pull and not neglect them. If you live in a region where there are no seasonal temperature changes, then you also need to carry out work on the insulation of the foundation. This will ensure the thermal insulation of the foundation and prevent cold air and moisture from entering the house.

And then both the private house and the bathhouse will be cozy and comfortable. Also, the microclimate will be preserved in the house.

profibrus.ru

How to insulate the foundation of a house from the outside with your own hands with a diagram

An important part in the construction of a house is the foundation, as it forms the basis of the house. Reliability and strength are the main purpose of the foundation. You should not save on quality, because the service life depends on the material from which it will be made. The climate in the country, especially in winter, is not the warmest.

Cold weather forms cracks in the foundation, thereby spoiling it. To prevent this from happening, you should take care of the foundation of the house, namely, insulate the foundation protruding above the ground and the brick base from the outside, this will prevent freezing and waterproofing. The methods include: insulation of the foundation with polyurethane foam, polystyrene foam, foam plastic, thermal panels.

To perform such work, it is better to turn to professional specialists with skills in business and the availability of ready-made equipment, but if you are sure that you can do the job, then you can do it yourself (available videos with instructions will help you understand this technology).

Many, having isolated the lower part of the house from the inside from the cold, do not take into account that the influence of water and cold contribute to the formation of microcracks, which in the future will lead to undesirable consequences.

Insulation from the outside is much better, because the material from which the foundation is made will protect against freezing and provide waterproofing. Technoplex extruded insulation is extruded polystyrene foam (XPS) suitable for insulation of plinths from the outside.

For more information about technoplex insulation, see the video.

Foundation types

• Tape
• Columnar
• slab
• pile

Choosing a heater

Styrofoam or Styrofoam

1. Sound, heat and waterproofing.
2. The thickness of the layer of this insulation is 5 kg.
3. Great strength and easy assembly.
4. Affordable price.
5. Suitable for warming a wooden house from the outside.

1. Styrofoam is not suitable for mounting the basement due to flammability.
2. Moisture absorption.
3. Requires additional structures, which leads to additional costs.

How to choose foam?

Styrofoam is plastic, the main volume of which is occupied by air. It is because of the large amount of air that the foam has good thermal insulation.

Styrofoam is pressed and unpressed. The main criterion in the choice of foam is density. High-quality foam is elastic and soft to the touch.

Expanded polystyrene is a universal heater in all respects. Despite the fact that the production of expanded polystyrene began 60 years ago, it is still popular and has no analogues in the Russian Federation.

Step-by-step do-it-yourself polystyrene insulation technology:

1. Cleaning the walls from dust and dirt.
2. Primer preparation.
3. Applying the primer to the walls with a roller or brush.
4. Installation of the starting bar on the plinth.

polyurethane foam

1. Good adhesion.
2. The minimum amount of costs.
3. Does not depend on weather conditions.
4. Efficiency.

Let's go directly to the insulation itself.

• When insulating the outside, an excellent material is expanded polystyrene (polystyrene). To begin with, waterproofing is carried out (bituminous mastic can be used), and then polystyrene foam boards are glued.
• If you decide to insulate with polyurethane foam, then it is enough to spray liquid on the surface from a special spray device.

Penoplex

1. Easy installation.
2. Cold resistance and vapor permeability.
3. Strength.
4. Unlike expanded polystyrene, foam plastic does not absorb water, providing waterproofing.
5. Strength.
6. Penoplex is an environmentally friendly material.

1. High cost.
2. At high temperatures, foam plastic melts.

What are foam boards suitable for? Penoplex plates are well suited for warming baths, basements, country houses. Penoplex well provides thermal protection, thereby saving heating and air conditioning costs.

Thermal panels

Advantages:

1. Strength.
2. moisture condensation.
3. No cold air entering the house.

Cons: Most expensive compared to the ones listed above.

Strip foundation insulation:

1. Tamping the trench and backfilling with a layer of sand (10-15 cm).
2. Pouring a layer of concrete (3-5 cm).
3. Waterproofing is applied to the cement layer and insulation is laid (insulation can be done with polystyrene foam, polystyrene foam, polystyrene foam).

Columnar foundation insulation technology.

First you need waterproofing. After waterproofing, you can proceed to the insulation itself:

1. The first thing to do is mount the metal frame.
2. Sheathe the metal frame with metal profile sheets.
3. Attach insulation boards inside the frame.
4. Fill the remaining free space with expanded clay.

Pile foundation insulation

1. The first step is waterproofing so that the metal elements do not collapse over time, and the wooden ones do not rot.
2. Then the basement frame is erected.
3. Install insulation inside the basement (you can insulate it with polystyrene foam, polystyrene foam, polystyrene foam).
4. Attach the panels to the plinth.
5. The inner side of the base is insulated with expanded clay or soil.
6. Floor insulation.

Insulation of the slab foundation.

The slab foundation is distinguished by an affordable price and excellent hydro and thermal insulation. For insulation use polystyrene or foam (5 - 10 cm layer)

1. First, waterproofing is carried out.
2. Heat-insulating plates are laid on a layer of waterproofing
3. Polyethylene is laid with an overlap of 10-15 cm on double-sided tape.

For more information about the insulation of the foundation, see the video.

Basement insulation from the outside with technoplex based on extruded polystyrene foam is the best solution for saving the heating budget (increases heat by 1.5 times). In addition, it can be laid with your own hands, since the distinctive advantage of the technoplex is ease of use and high speed installation work.

The high strength of expanded polystyrene makes the base even and rigid. Due to the saturation with nanographite, the technoplex plates acquire a light silver hue. Technoplex type expanded polystyrene is used both in industry and in private construction.

The correct selection of expanded polystyrene will provide thermal insulation for many years to come. Also, foam plastic is considered an excellent insulation of the house from the outside based on extruded polystyrene foam, it can also be laid with your own hands (more on this in the video).

Separately, I would like to talk about the insulation of a wooden house from the outside. A wooden house is characterized by a relatively light construction, but the foundation of the house plays an important role. What should be the foundation for building a wooden house?

The tape and slab foundation is not particularly convenient for the construction of wooden structures, firstly it is not cheap, and secondly it will take a lot of time.

The columnar foundation is suitable for small buildings, for cottages and baths. It is best to use a pile, it is an ideal option for wooden houses, the foundation is both economical and reliable.

Warming the foundation of a wooden house from the outside with the help of polystyrene foam is the most profitable solution, since pasting the walls with polystyrene foam materials is popular and is the most common way. The foam structure retains heat and does not let moisture in from the outside (this is very important for a wooden house). Warming can be done by hand.

Also, for warming the foundation of a wooden house from the outside, insulation with foam board, foam plastic and polyurethane foam is suitable.

In this article, we will give answers to the most popular questions that arise among novice builders, especially those who have decided to

There are always two ornate solutions to this question, and they depend not on engineering knowledge, but on the amount of money. Therefore, most customers and owners argue that if there is no basement or basement, then it makes no sense to engage in “empty” insulation. But there are other statements about this issue: the loss of heat from the living space does not go evenly over the area, but from the bottom up. In fact, it is easier and more reasonable to insulate walls, windows or ceilings than to insulate the base.

Insulation of the foundation with polyurethane foam spraying

For those who still do not trust the opinion of the masses, they recommend not foam plastic, but extruded polystyrene foam, as a heater for the blind area or foundation.

Why insulate the foundation, and is it possible not to insulate?

Modern private construction involves the creation of a room protected from the effects of dampness and moisture. Therefore, foundations, even without a basement and a basement, usually tend to be insulated as profitably (cheaper) as possible. If you need a warm basement, then such a question is not even worth it. But when there is nothing below the ground floor, they insulate due to the formation of cold bridges.

Here's how it works. The correct private residential building is insulated in all areas, because these "bridges" can form at the junction of the walls to the base. And the destruction will begin due to the temperature difference.

Which heater is better in this case?

General characteristics for such material:

1. Does not deform under ground pressure.
2. Does not absorb moisture / resistant to its effects.

And the circle of search for the material needed in the work narrows:

1. Extruded polystyrene foam.
2. Polyurethane foam coating.

It is important to know that the artificial material, designed specifically for insulation, is not exposed to rodents and perfectly withstands compressive pressure.

But with each goth, the previously familiar expanded clay was no longer used as a heater. It is being replaced by technological, specialized materials.

How to insulate the floor if there is no foundation

Of course, such a case is a rarity in our time. But earlier, to preserve heat without a foundation, they made a primitive mound. Now the work on warming the subfloor and the entire area of ​​\u200b\u200bthe house can be done as follows:

1. The entire subfloor is covered with foil foam insulation. The required thickness is 10 millimeters. The material is mounted with the foil side up. And to save the result, they cover the entire area with plywood, with a thickness of 10 mm or more.
2. From the outside, the floor, of course, is not insulated. But you can do work to save heat. The goal is to prevent cold air from getting under the floor. It is best to create trenches around the perimeter of the missing foundation and create simple fences. But before pouring or laying the space from the walls to the bottom of the trenches, it is more correct to make waterproofing. Then you can lay out narrow walls of brick or shed the protective part with concrete mortar. Having completed the “walls”, expanded polystyrene is attached to the outside, and already on top of it they are lined with moisture-resistant bricks or other building materials.
3. It is possible to exclude pouring or brickwork by replacing it with aceid sheets. The latter also go to work in two layers, and in the middle is the aforementioned polystyrene foam.

And the modern look of the mound will insulate the floor no worse than any foundation.

Asbestos-cement electrical arc-resistant board (aceid)

How to insulate the foundation of an old house

An old house is in most cases a wooden building, like a "five-wall" or "cross house". With rare exceptions, there may be a question about the insulation of a brick building, which has sunk into the ground for many years. With heavy houses, everything is very deplorable, because such buildings cannot be repaired without equipment.

But old wooden houses can and should be insulated. To do this, the work plan is as follows:

1. Dismantling homemade formwork or rubble. Wooden structures are always placed and placed on piles; in the old days, a pile was simply laid out of brick below the freezing depth.
2. Having cleared all the space under the level of the walls from the ground and construction debris, it is necessary to dig shallow trenches. It is not necessary to deepen by 1.5-2 meters. Enough and half a meter.
3. In the trench, a pillow of sand or gravel is made. It is desirable, but not always convenient, to divert groundwater.
4. The first row of protection is laid on a half-brick pillow. It is best if it vertically rises just under the level of the walls. But the purpose is to keep warm, not support, so when laying, they simply follow the standard rules for creating a flimsy brick wall.
5. After completing one row, proceed to the second - the front. But it is not necessary to ensure a distance of at least 15 cm between them. It wakes up with expanded clay. This insulation will be much cheaper, and rodents bypass expanded clay.
6. Having made both rows and spilling the space between them with expanded clay, a “cap” of concrete mortar is poured from above. It should have a slope towards the street, and after drying, iron covers are mounted on top for protection, whose drains are also directed away from the building.
7. Each of the four sides of the house now needs ventilation. To do this, ventilation pipes are made in the corners or in the center. They are planned from the very beginning, covering the required small area with a horizontal plastic pipe. In winter, the ventilation ducts are closed, but in warm weather they are released for the influx of fresh air and the movement of condensate.

How to insulate a stone foundation

This material, or rather a part of the building made of rubble stone, is insulated from the outside. In work they use:

1. Expanded clay.
2. Styrofoam.
3. Polyurethane foam.
4. Roll heaters.

It is easy to repair and insulate rubble stone in the foundation. It is enough to dig trenches from which a layer of insulation, foam or polystyrene comes. Well, the front part can be made of brick, slate or any other material.

Buta foundation

How to properly insulate the foundation and the soil under it

Most foundations can be insulated from the outside and from the inside. And by internal insulation they mean work similar to walls. They simply insulate the basement or basement with the same materials that were used during the construction process.

But the floor depends on the temperature of the soil, which means that the general temperature in the house is also related to this factor. It turns out that it is necessary to insulate the soil, especially in cold regions, under a strip or slab foundation.

The following options can be applied:

• Insulation with fixed formwork.
• Take care of comfort after pouring.
• The usual rubble from the ground.
• The outer layer of expanded clay.
• Expanded polystyrene and mastics.

This is the insulation of the foundation itself from the outside. Soils are insulated in advance, in the process of creation. It is easier and more convenient to do such work when creating a slab base. And the total height of the base does not matter, because a good layer of insulation (15 cm or more) is usually arranged between the concrete slab and the floor screed. This is the only way to really achieve the goal, and the following types of foundations are usually used as a project:

1. "Russian plate".
2. "Swedish plate".
3. "Finnish plate".

How best to insulate the foundation of a private house

Let's talk about efficiency. According to the technique of execution, they are now practicing:

1. Plate heater. You can use extruded polystyrene foam 200 kPa, foam glass, polyurethane foam or synthetic rubber.
2. Bulk materials. This is expanded clay or boiler slag (budget version).

Time-tested materials (expanded clay, slag) are beneficial, but not so effective. It is best to use slab heaters. When a new building is being built, such material goes into work after the installation of floors. Already a residential facility is insulated, having prepared a meter-long trench in advance. Moreover, the insulation boards must be laid after a latex-based primer and waterproofing.

It is better to insulate the foundation according to this scheme:

1. The insulation is fixed with special glue.
2. The plates must be attached to the base and pressed well. Each sheet is fastened in turn, with an overlap soak to better connect the grooves.
3. If the foundation is high, then the technology changes - they work in stripes or stick to a checkerboard pattern. And the difference in the seams must be filled with foam or a sealant composition, otherwise the cold bridges will violate the insulation.
4. Polystyrene sheets must be fixed with fasteners. Suitable plastic dowels with large hats. To do this, drill holes of at least 50 mm. That part of the sheet, which is already below the ground level, is simply pressed against the ground.
5. Plate heaters need a front finish. They are plastered with glue with a plastic mesh. Such work dries for at least three days.

Specialist consultation

There are a lot of "sofa" specialists and theorists on Youtube. The blog "Zigurd Skrodelis" makes an attempt to provide viewers with expert-level information. This video deals with the issues of insulation of the foundation.

How to insulate the foundation from the outside

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 the effects of groundwater 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 the harmful effects of the environment on the foundation, they resort to a set of measures, and the two main protective measures are the waterproofing of the foundation and its insulation. 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 warming is 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 the use of professional help. In addition, the backfill layer is simultaneously waterproofing and compensates for soil pressure during heaving, which makes it possible to effectively use this method on wet clay soils with a high frost heaving coefficient.

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 the foundation is waterproofed. The choice of the type of waterproofing depends on the operating conditions of the foundation, but it should be taken into account: when backfilling with expanded clay, it is impossible to apply coating waterproofing with 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 of the 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, as well as waterproofing suitable for this method.

1. The surface of the foundation is dug to the full depth, cleaned, dried. Remains of bituminous waterproofing, fats, oils must be removed from the surface - polystyrene foam and its analogues are destroyed upon contact with these substances.
2. The foundation is waterproofed in one of the following ways: coating waterproofing using polymer-based mastics; impregnating waterproofing or roll waterproofing of the foundation.
3. Plates of heat-insulating material are laid 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 surface of the foundation is protected with 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: its implementation requires the construction of a frame, good protection of the insulation from getting wet, and the construction of a protective wall made of bricks or other finishing materials. It is usually used to perform the ground part of the foundation and the basement as a continuation of the thermal insulation of the walls of the house.

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. Lay heat-insulating 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.

Insulation of the foundation with polyurethane foam

One of the most effective ways to insulate 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.

How to effectively insulate the foundation of a private house from the outside

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 the insulation of the walls of the house. 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.

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 of the budget for heating will also be reduced;
• the effect of soil heaving forces is leveled;

• 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. The corners of the structure require special attention. In these places, the thickness of the heat-insulating material is 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 with bulk materials: expanded clay, boiler slag.

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

Expanded clay insulation

Before the advent of new generation insulating materials, expanded clay was often used. Its main advantage is its 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.

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. Rolled waterproofing is laid, strongly pressing with a roller. Joints are covered with sealant for reliability. Wait until the waterproofing dries, and then proceed to laying the insulation.

1. Insulation sheets are attached to the waterproofing with glue specially designed for these works. If the waterproofing is bituminous, then bituminous mastic is used as an adhesive, which does not contain aggressive components for the insulation board. Apply it with a strip along the perimeter of the sheet, stepping back a couple of centimeters from the edge, and with a few dotted strokes in the center.
2. The plate is attached to the foundation and pressed well. The adjacent sheet is overlapped in a similar way, connecting the grooves.
3. High foundations that require laying insulation in several strips are glued a little differently. It is important to avoid large seams, so the plates are glued in a checkerboard pattern.
4. Wide gaps are filled with foam or puttied with sealant to avoid the formation of cold bridges.

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

The advantage of extruded polystyrene

Styrofoam slabs 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.

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.

Insulation with liquid polyurethane foam

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;

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

There are only three cons. This is a high cost and the need to purchase special equipment for laying. 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. A drainage pipe is placed on top of it, 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.

With knowledge of the advantages and disadvantages of insulation, you can choose the material that suits you best. Competently carry out construction work, and you will ensure 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

Do-it-yourself insulation of the foundation of a private house: outside and inside + Video

Thermal insulation of the foundation is the most important stage in building a house. It is as important as wall insulation. Especially in harsh climatic conditions, characterized by freezing of the soil to a great depth.

An uninsulated foundation is the cause of serious heat loss, it is dangerous for freezing and, following this, the destruction of underground structures.

Thermal insulation of the foundation from the outside significantly reduces heat loss, and serves as a reliable protection for the foundation of the house from the influence of groundwater and negative temperatures.

Especially dangerous for building foundation structures is the freezing of heaving soils, on which houses with a pile-screw foundation are usually erected.

Why is it necessary to insulate the foundation

To avoid the negative impact on the foundation of the external environment, they resort to measures such as waterproofing the foundation and its insulation.

The largest volume of cold air enters the building through the foundation. And if the house has a basement used for any functional purposes (garage, billiard room, laundry room), then special attention should be paid to its thermal insulation.

An unheated basement does not need thermal insulation. But it is necessary to insulate the basement of the foundation, especially in houses built on piles, in order to reduce heat loss at the floor level of the residential floor. Insulation of the basement helps to keep the heat in the house, cutting off the path to the house of cold air.

In addition, the foundation insulation layer plays a partial role in its waterproofing.

So, the thermal insulation of the foundation:

• reduces heat loss;
• reduces heating costs;
• reduces the impact of soil heaving on the foundation;
• stabilizes the temperature inside the building;
• prevents the formation of condensate on the internal planes of the walls;
• performs mechanical protection of waterproofing and foundation structure.

Which insulation is more effective

There are two ways to insulate the foundation - insulation at the pouring stage and subsequent insulation produced after the concrete casting has solidified. The first one is the most preferable.

The most correct approach to the insulation of the foundation during the construction process is fixed formwork. It is a structure inside which a concrete solution is poured. At the stage of its solidification, it plays the role of an ordinary formwork, but after that it is not removed, but remains as a layer of insulation.

Usually fixed formwork is made of expanded polystyrene boards. This type of thermal insulation has a high cost, however, in the future, such a foundation does not need additional insulation.

Insulation is most often carried out outside, because with external insulation, unlike internal insulation, both the premises of the house and the foundation itself are protected. Insulation of the foundation from the inside is most often resorted to if external insulation is not possible.

Materials and methods of insulation of the foundation

Insulation work begins with the choice of a heat-insulating material that should not deform under soil pressure and absorb moisture.

To date, the choice of materials and methods for insulation is very diverse:

• falling asleep with sand, expanded clay or earth.
• insulation with foam boards and its analogues: foam plastic, polystyrene.
• insulation with mineral wool;
• insulation with polyurethane foam.

All these materials are suitable for warming private wooden, brick and block houses and differ in the values ​​of thermal insulation parameters and cost. To make the best choice, you need to study their pros and cons.

Insulation of the foundation with sand and expanded clay

Until recently, this was the most popular way to insulate the foundation from the outside, due to their ability to remove moisture and create an air gap near the walls of the foundation.

The advantages of the method include the low cost of the material and the ability to make thermal insulation with your own hands. At the same time, the backfill layer simultaneously performs the functions of waterproofing and reduces the pressure of the soil during heaving, which allows it to be used on clay soils.

Execution technology:

1. First of all, a pit is prepared from the outside of the perimeter.
2. Drainage is made at the bottom of the pit: geotextile is laid, covered with crushed stone, on which a perforated pipe is placed on top, and then again a layer of crushed stone. Pipes are tied and taken to the well.
3. The foundation is cleaned and dried, and then it is waterproofed.
4. The prepared trench is covered with sand or expanded clay, tamping it in layers.

Warming with mastics

A certain amount of insulation can be achieved during waterproofing work. For example, the vertical walls of the foundation are recommended to be covered with several layers of bituminous mastic. This isolates cracks and small holes at the joints of the plates through which heat escapes.

After that, a rolled waterproofing material is applied to the side surfaces. It will be an additional layer of thermal insulation.

Foundation insulation with mineral wool

This method is used extremely rarely, because for its implementation it is necessary to build a frame, provide good protection of the mats from getting wet, and also build a protective wall from any finishing materials.

Execution technology:

1. The surface of the foundation is cleaned and dried, defects are eliminated.
2. It carries out a frame for mineral mats from a metal profile.
3. Heat-insulating mats are laid on the frame and fixed. The surface of the insulation is covered from external moisture with a vapor-permeable wind-hydroprotective film.
4. Protective brick walls or a ventilated frame are erected.

Insulation of the foundation with foam

A modern and very effective method that qualitatively insulates the walls of the foundation. Its advantage lies in the high thermal insulation characteristics of the material, ease of work, resistance of the material to mechanical damage and stress.

The disadvantage is the need to prepare the foundation surface, protect the foam from rodents, as well as suitable waterproofing.

Execution technology:

1. The foundation is dug, cleaned and dried. Remains of bitumen, grease, oil are removed from its surface.
2. The foundation is waterproofed.
3. Foam boards are laid on an adhesive sold as a dry mix.
4. The surface of the foundation is protected with a reinforcing mesh from rodents, laying it on the same glue. Then the lower part of the foundation is backfilled with sand, and the upper part is fixed with the help of dowels intended for this.

Insulation with polyurethane foam

Polyurethane foam is a modern material for thermal and waterproofing and sound insulation both outside and inside the room. For its use, it is necessary to have special equipment that, under high pressure, sprays polyurethane foam layer by layer onto the required surface. The thickness of the polyurethane foam layer should be 5 cm. A similar insulation effect can be achieved using a 12 cm thick polystyrene foam layer.

The advantages of polyurethane foam insulation are:

• longevity;
• high adhesive properties;
• no need for additional vapor and waterproofing.
• low vapor permeability;
• seamless coverage;
• reliability;ne
• low thermal conductivity;

Among the shortcomings are the need to use special equipment and the gradual destruction from solar exposure.

Insulation with expanded polystyrene

Plates made of extruded polystyrene foam almost do not absorb and do not let water through. Therefore, this material retains its thermal insulation characteristics for a long time.

Advantages of insulation with this material:

• long service life;
• strength;
• constancy of thermal insulation properties;
• "inedible" for rodents.

When insulating with polystyrene foam, remember that:

• the corners of the building need "reinforced" thermal insulation,
• to insulate the soil around the perimeter of the building, a layer of polystyrene foam must be placed under the blind area,
• the width of the blind area should correspond to the depth of freezing of the soil in these climatic conditions.
• before insulating the foundation of the house, the surface of the walls must be leveled and waterproofed on it;
• fixation of the plates is carried out by applying glue to them or by “melting” the bituminous waterproofing, to which the plate is then pressed and held for the time necessary for the plate to solidify.

How to insulate a shallow strip foundation

Mounting of plates should be started from the bottom, the rows should be joined end-to-end. The thickness of the plates must be the same. The vertical seams of adjacent rows should be staggered.

Seams between plates with a thickness of more than 0.5 cm must be filled with mounting foam.

Glue must be selected based on the waterproofing material. When using rolled and mastic materials based on bitumen, bituminous mastics are used as glue, which do not contain aggressive ingredients for expanded polystyrene.

Before insulating the foundation from the outside, be sure to wait for the bituminous waterproofing to dry completely.

Glue on the plates located below the soil level is applied pointwise, which allows the condensate between the insulation and the foundation wall to drain down.

The slabs located in the ground are attached only with glue and pressed against a layer of earth.

For slabs that are above ground level, it is imperative to use fixing dowels.

How to insulate a monolithic foundation slab

For the most effective thermal insulation of the floor and basement, you need to take care of the insulation of the base plate of the foundation.

To do this, the insulation is laid on top of the waterproofing layer. Then, when used for pouring a power floor, knitted reinforcement is used, while it is enough to cover the heat insulator with plastic wrap with an overlap of 10 - 15 cm and gluing with double-sided tape.

When using a welded reinforcement structure, it will be necessary to make a protective screed of concrete or cement-sand mortar on top of the film, and on top of this, perform welding work.

It should be noted that it is more correct to engage in laying and warming the foundation in the warm season, with a fairly high air temperature and not strong humidity.

How to independently and properly insulate the foundation of a private house

When wondering how to properly insulate the foundation of a private house, many do not even realize that there are several ways and options for creating thermal insulation. Basically, everything will depend only on the wishes of the owner, his financial capabilities, and, of course, the operating conditions of the building itself.

Causes of heat loss

As you know, the foundation of any modern premises must be reliably insulated, otherwise the heat from the building will go outside. By the way, according to experts, over 20% of heat losses are due to poor quality foundations and poorly insulated floors.

Basically, on the territory of our country, clay soil is distributed, which belongs to the category of heaving. As a result, during freezing, some displacement and deformation of the base itself can be observed. The use of insulating materials helps not only to perform reliable thermal insulation, but also to avoid violating the integrity of the foundation, to reduce the effect of ground heaving.

Heaters are usually laid on top of the waterproofing layer, thereby creating additional protection against various mechanical factors that may occur when the earth is backfilled. However, it should be borne in mind that the sole of the base does not require the creation of a layer of thermal insulation, as it is located slightly below the soil freezing mark.

How to insulate with expanded clay?

Let's take an example of how to insulate the foundation of a wooden house. And not only, since the actions in this case will be almost identical with the insulation of the foundation of a building from any material.

So, there are 2 types of insulation: outside or inside. Let's consider each method individually.

1. Option 1 - at the stage of pouring the foundation.

1. Option 2 - with an already erected building.

The optimal time for warming the foundation is the initial stage of construction, before the walls are erected and the subfloor is laid. It is also logical to carry out measures to create thermal insulation before the process of laying the box.

By the way, for information! The earth embankment is inferior to expanded clay in terms of its thermal insulation qualities.

And if you decide to keep the basement, filling with this bulk material should not be done to the entire height of the box, but only 0.4-0.5 m from the walls located inside. So the basement will be preserved, and the lines of communications and their nodes can be located in part of the underground.

So, expanded clay insulation. The process itself is carried out as follows:

1. A removable formwork is mounted along the inner perimeter of the building. To create, any improvised material is used (the remains of slate, boards, sheets of plywood and tin).

1. The inner surface is covered with expanded clay. Waterproofing or mineral wool is laid on top. Sometimes already laid communication lines do not allow filling the entire box from the inside, and then the external method of backfilling is used, while creating waterproofing protection in the form of brickwork.

Warning: Styrofoam!

Now we will consider thermal insulation using polystyrene foam materials, and how to insulate the foundation of a wooden house from the outside using this technology.

By the way, pasting the outer walls of the foundation with slabs of extruded polystyrene foam or a cheaper type of this material - polystyrene foam, is the most common method today. The foamy structure perfectly copes with both heat retention and moisture penetration. And for regions where there are no severe colds, penoplex can be used. With this option, the corners should be glued most carefully, since it is in these zones that freezing occurs most of all.

Is it necessary to insulate the foundation of a house without a basement? This is a problem that novice builders often face when they decide to install thermal insulation with their own hands. Basically, if there is no basement, it is worth approaching the issue of warming the foundation with all responsibility and seriousness.

In the case when the basement is not planned, the area reserved for the box should be covered with earth or expanded clay to the level of the floors. This will create an additional protective layer between the base and the floor.

1. Along the perimeter of the building, they dig a trench of the required estimated depth of the foundation. Polystyrene slabs need a rigid base, and for this it is necessary to fill the finished trench with sand with fine-grained gravel and compact it.

1. Then all the elements must be cleaned from the solution and all uneven places should be leveled.

1. The prepared even base is primed.

1. Waterproofing is in progress. First, the surface of the plates is coated with liquid rubber or bitumen. When creating waterproofing with bituminous material, one must be able to handle the burner. All joints are heated with great care to avoid the appearance of seams (their presence violates the integrity of the insulating layer).

1. The slabs are fixed to the foundation surface using construction adhesive. You can use bitumen or polymer mastic.

The slabs are laid from the corners below (from the sand cushion). After the first row is laid, the next one is laid. In this case, it is necessary that the seams are located in the center of the bottom sheets. The plates are connected by grooves according to the lock principle. Docking between the corners is blown with mounting foam (this way you can avoid cold bridges).

Then the part of the foundation located underground is covered with roofing material or covered with soil. A film with waterproof characteristics is glued on top of the roofing material.

Outside, with the help of a fiberglass mesh, everything is reinforced, plastered and decorated with finishing materials.

But the insulation of the foundation from the inside in a wooden house is not recommended, so with this option it is possible to correctly perform thermal insulation if there is good underground ventilation in the room. Professionals say that when warming inside, there is some shift in the dew point, as a result of which the foundation may begin to collapse due to the impact of external negative factors on it. So the question of how to insulate the foundation of the house from the inside does not quite fit in this case.

However, this does not mean that insulation can not be carried out. Many owners, for example, using the same polyurethane foam in liquid form, may well avoid such consequences as excessive moisture and heat loss during the installation of thermal insulation not only inside, but also outside.

A few words in conclusion

So, as you know, the foundation can be insulated with your own hands both from the inside and from the outside. The main thing is to decide on the necessary materials and method of insulation, and do not forget to be guided by the principles and advice of professionals, correctly applying them in practice!

Do-it-yourself well cleaning