The correct method for external insulation of a house from a bar. Insulation of a house from a bar outside: video and installation rules What kind of insulation is better to insulate a house from a bar

Houses from a bar, due to their environmental friendliness, are a popular option for private construction. But although they are heated quite quickly and have good thermal insulation properties, the insulation of a log house is an urgent need for most households.

Installation of insulation on the walls of a house from a bar Source nd-prime.by

Differences between old and new technologies

Wooden construction in Russia is a centuries-old tradition. For centuries, houses were built exclusively of log houses, from massive round and semicircular logs, the thickness of which was sufficient for good thermal insulation. As it is today, the tree shrank over time, and gaps appeared between the logs. But earlier there were other ideas about the beauty of the facade, so ordinary tree moss was used to seal the cracks. It landed in the cracks between the logs and, over time, reliably filled all the space between them.

In modern construction, the issues of economy come to the fore and force the use of a beam, the thickness of which does not always meet the requirements of the developed standards. With insufficient cross-section, complete freezing occurs in winter, which means that the walls of the house are not able to retain heat. In addition, over time, the tree begins to dry out, due to which heat loss grows even more.

It looks like a wall from a bar after the drying of wood Source bredmozga.ru

Advantages and disadvantages of wall insulation in a log house

The zealous owners are looking for ways to properly insulate a house from a bar in order to spend less money on heating in winter. This can be done in two main ways: from the inside and from the outside, and external insulation is preferable for a number of reasons.

Features of insulation from the inside

With internal insulation, the positive effect of saving heat is leveled by disadvantages:

Part of the usable area is inevitably lost due to the installation of the frame under the insulation.
The thermal insulation layer hides the "living" wooden walls and the rooms lose their unique charm.
Due to the external winter cooling of the unprotected wooden wall, the dew point is shifted to the internal insulation. Condensation occurs, mold appears, and it is difficult to control the condition of the wood.

Video description

What happens to the wall with improper insulation from the inside - in the video:

Insulation of walls from the outside: advantages and disadvantages of the method

Most often they resort to it, keeping in mind the obvious advantages over internal insulation:

The useful area of the internal space is preserved;
Outside work does not change the family's daily routine.
The facade of the house is reliably protected from sudden changes in temperature, which prolongs the service life of the building.
The correct selection of materials does not violate the microclimate of the rooms (the house "breathes").

You can decorate the facade to your liking or improve the appearance if the wood has darkened from time to time.
If the technology is followed, the wood will be additionally protected from damage.
Ease of control of the work of the construction team.

The main disadvantage of outdoor insulation is the need to carry it out in good weather - it makes no sense to do this in cold and damp conditions.

Three main methods of insulation

Any wall insulation involves attaching a layer of insulation and structures holding it to it. For this, several techniques have been developed, and each of them has its own advantages and performance characteristics.

The principle of wall insulation - creating an additional protective "pie" Source lestorg32.ru

Hinged ventilated facade

By itself, this technology was developed as a decoration for the facade of a house, but since the installation procedure involves attaching a layer of mineral wool or a similar material to the wall, this method can be considered as insulation.

Benefits of using ventilated facades:

Long service life (up to 50 years), excellent heat and sound insulation.
Easy to install.
A wide range of cladding materials in various colors.
The dew point is shifting outward.

Installation technology:

Pretreatment of lumber is carried out with compounds that prevent decay and make the tree unattractive to insects.
Outside, a crate is attached to the house, onto which a canvas of hydro and wind protection is stuffed. Air circulates freely in the space between the lathing slats, due to which condensate or moisture that has appeared in another way will be drained from the insulation.
The crate is leveled with a plumb line.
Next, slats are stuffed onto the crate, the distance between which should correspond to the width of the heat insulator. Accordingly, the height of the slats is also selected - for central Russia it is recommended to use insulation with a thickness of at least 70 mm.

The peculiarity of the ventilated facade - a gap is left between the insulation and the cladding Source builderclub.com

Insulation mats are laid between the slats, fixing with dowels.
Then, bars with a thickness of at least 5 cm are additionally packed on the slats, so that there is always a gap between the insulation and the cladding.
Cladding (siding) is being mounted.

Laying insulation under siding.

There are practically no fundamental differences from the previous technology - insulation is also used here and a decorative coating is also used outside. But if the very name of the ventilated facade speaks of the place of its use, then the whole house is closed with siding in any case.

The nuances of installation, taking into account the selected material:

The distance between the slats is set equal to the width of the mat if foam or sheet extruded polystyrene foam is selected.
The distance between the slats is set 10-15 mm less than the width of the mat, if mineral wool is used. This must be taken into account when calculating the amount of mineral wool.
According to the technology, wool slabs are mounted on the spine; polymer boards are placed in cells, joints are processed with polyurethane foam.
When using mineral wool, a waterproofing layer (diffuse membrane) is additionally mounted on top. It is not needed when using fiberglass or polystyrene.

Sheathing of a log house with siding Source stroyfora.ru

Polyurethane foam spraying method

The principle of this technology is clear to everyone who has seen how they work with polyurethane foam. The difference here is that the volume of material required to create a thermal insulation cushion is much larger, so a spray gun is used to process polyurethane foam using compressed air from a compressor. Technology advantages:

Easy handling and high speed of application of the thermal insulation mixture on large surfaces.
Excellent adhesion (adhesion) to most building materials, long-term preservation of properties.
Environmental friendliness, fire resistance and protection against decay of the treated surface.

Spraying insulation can be done on any prepared surface Source keeninsulation.com

Types of heaters

The choice of insulation for outdoor work is wide enough and each of them has distinctive features that must be taken into account when choosing:

Mineral wool

Available in three varieties - stone (basalt), glass and slag. All have similar properties: fire-resistant, non-combustible, chemical and biological resistance. Another advantage of the material is vapor permeability, environmental friendliness and high sound insulation.

On the downside, cotton wool attracts rodents and does not dry out completely when wet.

It all depends on the skills of the builders, but usually it is easier to insulate a house outside with mineral wool using mats than rolls - the latter are not always convenient to deploy on vertical walls.

Laying mineral wool slabs in the crate Source remontik.org

Plate styrenes (polystyrene, polyurethane foam)

Polyfoam is the cheapest option, lightweight and porous, with low hygroscopicity and excellent thermal insulation. The main disadvantages are considered flammability (releases toxins during combustion), fragility and instability when exposed to ultraviolet radiation.

Video description

In this video, we will dwell in more detail on the insulation of the house with polystyrene foam. How safe is styrofoam ?:

Extruded polystyrene foam

It has a special porous structure, tolerates low temperatures well and is not suitable for microorganisms. The material is durable, easy to install (plate), does not absorb water. Disadvantages: Highly flammable, while releasing harmful toxins.

Styrofoam and expanded polystyrene look similar Source lineyka.net

Ecological sprayed styrenes (ecowool and polyurethane foam)

Such heaters are expensive due to the method of application; large surfaces require special setup and experience. For small areas of complex shape (cracks near pipes, windows, between plates), polyurethane insulation in cylinders is offered.

"Warm" plaster

A mixture of light granules of a complex composition (glass, cement and hydrophobic additives), which is not flammable, is not afraid of ultraviolet radiation, protects the facade well from moisture and is easy to repair.

The subtleties of wall insulation from a bar

Insulation of a log house outside for siding, you cannot start when you want - before that, the following conditions must be met:

Insulation installation work can be started only after the log house has completely shrunk - often this period can be one and a half to two years.
It is forbidden to carry out work if the facade has not been treated with an antiseptic. Ignoring this rule will lead to the appearance of fungus and rot.
Before insulating a house from a bar outside, it is necessary to prepare the facade: to close not only wide gaps, but also small cracks. To do this, you can use putty, polyurethane foam or similar materials.
Good thermal insulation of a log house requires careful selection of material and calculation of its amount. It should be taken into account how the thermal insulation material will be combined with the wood of the bar itself.
To choose a suitable insulation, one must take into account the size of the building, the quality of the log house and the seams.

Some heaters are installed without lathing Source obustroen.ru

Tools and materials for building thermal insulation

To insulate a house without being distracted by the search for tools and materials, builders need to prepare the following:

bubble or laser building level, you can still use a plumb line;
tape measure, square or ruler made of metal;
hammer, construction knife or hacksaw for metal, screwdriver;
front dowels, scotch tape, chalk, foam, antiseptic;
dry slats, insulation;
steam and waterproofing film;
material for final cladding.
wood protection sprayer

Treatment of a wooden wall with an antiseptic Source mybesedka.ru

On our website you can see the list of companies, providing house insulation services, among the houses presented at the exhibition Low-rise Country.

General course of installation of thermal insulation

All steps for insulating a house from a bar in any of the described ways are schematically always the same and are performed in the following sequence:

for ventilation of the first layer of insulation, a crate of wooden planks is mounted on the wall;
a frame is stuffed onto the crate to fix the insulating material
installation of insulation;
installation of additional lathing and frame (if double insulation is used);
laying an additional layer of heat insulator;
attachment of a diffusion membrane, which will provide hydro and wind protection.
installation of facade finishing (lining, siding) with an air gap.

Of course, in the end, insulation will hide the beauty of natural material, but finishing the house with a block house can be a way out here.

In general, the insulation of a house from a bar, carried out according to the rules, will make it possible to save on heating in the future. Despite the seeming simplicity of the whole process, there are a fairly large number of pitfalls that will surely come out during installation. As a result, if you do not have the proper qualifications, then it is better to order the work to professionals, because it is much more pleasant to control the construction site than to climb the walls yourself.

When a person decides to purchase or independently build a simple country house made with wood materials, he believes that such a house does not need additional insulation, since the timber is already a rather warm material.

Of course, you can also neglect the purchase of additional insulation for a country house from a bar, however, if such a summer cottage is used only in the summer season. In winter, however, especially when severe frosts appear, a house from a bar without additional insulation will not be able to hold back the cold.

Bar thickness

Experts say that in order for a house made of timber to maintain a normal temperature in winter, the thickness of the wall timber should be about 40-50 centimeters. However, for the construction of such a building, you will have to spend much more money than installing simple insulation.

Naturally, if not all, then most of the houses made of timber are made precisely with a wall thickness that does not correspond to the required one. Even if you effectively close all the cracks through which air can enter the house, the building will not become much warmer.

If you want to be able to be calmly in your country house made of timber without thinking about the cold, you must definitely insulate the building with high quality. Fortunately, in our time it is very easy to perform this procedure, since many good manufacturers provide their client with a huge range of materials, the installation of which can be easily performed even without much knowledge of this craft. Even if there are any difficulties in installing insulation, there is a huge mass of videos on the Internet that describe and show in detail the process of properly insulating a house from a bar.

Thermal insulation of a house from a bar outside

You can insulate a residential building from the outside using a huge amount of materials. Of all they can be purchased from a specialist store, where a wide selection of heaters is presented. The most important thing in insulating a log house from the outside is compliance with all the rules that the insulation material must meet, namely:

If the material for insulating a house from a bar complies with all the above rules, then it can be safely used to insulate a building from the outside. This type of insulation is also called external. Of its advantages, the following points can be noted:

Preservation of internal space in the house.
A noticeable reduction in fuel costs, as well as a qualitative reduction in heat losses.
Protection of load-bearing walls from external natural factors.
The ability to seamlessly change the facade and structure of the house as a whole.

Recommendations for external insulation of a house from a bar from experts

Experienced craftsmen who have been engaged in this craft for many years agreed to give a list of basic recommendations that must be followed when performing insulation installation work. So:

The main technology of insulation outside the house

In total, there are three well-known and popular methods of external insulation of a log house:

By spraying with polyurethane.
Insulation with foam.
Hinged facade with ventilation.

Many craftsmen agreed that the third method is the most convenient and effective.

The advantages of a curtain wall.

Simple and quick installation.
Huge selection of materials.
Service life (about 50 years).
Record indicators of thermal protection and sound insulation.
Protecting the facade of the house from any natural sedimentary influences.
Significant reduction in funds spent on additional heating of a log house.

Materials for proper insulation of the house and timber

In principle, there are a large number of materials with which you can insulate a house. However, as mentioned earlier, they must necessarily have the following properties:

incombustibility;
high rate of thermal protection;
lack of hygroscopicity;
moisture resistance;
environmental safety.

Based on statistics, we can conclude that the following types of materials for the correct insulation of a house from a bar are more in demand and effective:

fiberglass;
mineral wool slabs (hereinafter referred to as mineral wool);
basalt mats;
expanded polystyrene.

It is worth noting that mineral wool is the most popular material for insulating a house from a bar outside. Due to the fact that mineral wool is pretty light, it does not create unnecessary stress on the building, especially on its structural elements.

So, the process of installing insulation for a house consists of several stages, which we will talk about.

Vapor barrier

Before starting the installation of the insulation material directly, it is necessary to install high-quality thermal insulation. The most economical, but no less effective material for this system is special aluminum foil which can be purchased from the same specialist store.

Insulation frame

The next step is to install the frame in which the material will be installed, for example, mineral wool. To do this, you need boards about 10 cm wide and 4-5 cm thick. Boards must be nailed to the wall perpendicularly with an edge. The distance between each board of the frame should be about 1-2 centimeters.

It is necessary to fix the boards to the wall using self-tapping screws of sufficient length. Remember to watch the level carefully. If there are any irregularities in the frame, this will seriously affect the final version of thermal insulation, which must definitely be eliminated.

Insulation laying

Now we turn to the most important thing, namely, laying the material itself in order to insulate the house. Minvata, for example, is installed immediately with plates that must be laid very tightly between the boards of the frame.

Try to get rid of any unnecessary crevices that can leak moisture. Mineral wool fits into 2 layers of 5 centimeters each.

Waterproofing film

The final step is styling special waterproofing film, the function of which is to get rid of the passage of excess steam both from the house to the outside and vice versa. The material is attached using a special self-adhesive tape.

So, as you can see, in our time it is very easy to solve the issue of additional insulation for a suburban log house. It is also quite important to do this work correctly and efficiently.

With this article you can with ease and without unnecessary help perform all the necessary installation work in this direction, even if you do not have any knowledge base on this issue.

If, after studying the written instructions, you still have questions, as mentioned earlier, on the open spaces of the Russian Internet you can find many videos with an extremely detailed description of the entire process with illustrative examples.

Individual construction is expanding every year. More and more people want to live on earth, alone with themselves and nature. The share of environmentally friendly construction is gradually growing. Every eighth private house is built entirely of timber. 33% of them are made of timber. Insulation of a house from a bar is gaining great relevance. It allows not only to provide thermal comfort, but also to protect structures from the destructive effects of the environment.

Do I need to insulate a house from a bar? Two positive aspects of thermal insulation have already been mentioned. They apply to both external insulation and internal insulation. So why is it still recommended to insulate a log house from the outside?

We will answer this question with 3 points:

Insulating a log house from the outside moves the dew point outside the interior and enclosing structures, thereby extending the life of the structure.
Insulation of a log house from the outside allows you to radically change the facade of the house, giving it any kind of design you want.
The process of insulating a house from a bar outside allows you to save the much-needed internal usable area.

Choosing a material

Rising energy prices have prompted many private home owners to think about the need to reduce the cost of heating and cooling the interior of the house. Demand determines supply. Manufacturers of building and finishing materials have developed and launched the production of a wide range of thermal insulation compounds.

Before insulating a house from a bar, you must choose a heat insulator.

Their main types are:

fibrous;
polystyrene foam;
polyurethane foam.

Each of them has its own installation features, advantages and disadvantages when insulating a wooden house from a bar. All of them have a low specific heat capacity coefficient and a long service life.

Fiber Thermal Insulator

To insulate walls from a bar, roll and slab materials from artificial, natural, stone fiber are produced. The latter are made from basalt (volcanic stone) by melting and passing the melt through a centrifuge. The resulting fibers are treated with an adhesive and pressed. The resulting sheets are cut to size.

It has the following advantages when you need to insulate a house from laminated veneer lumber:

high vapor permeability;
low biological and chemical activity;
ecologically pure;
not flammable, does not spread flame over its surface.

The disadvantages include high water absorption capacity, destruction under constant exposure to wind loads. When insulating a profiled beam, it is necessary to provide for steam, hydro, wind protection.

Expanded polystyrene heat insulators

It is best to insulate a log house from the outside with the arrangement of a "wet" facade using polystyrene foam insulation. Heaters of this type are obtained by increasing the volume of gas when heating granules in a closed space, followed by their connection using adhesives or temperature.

There are two main types of expanded polystyrene:

foamed (polystyrene);
extruded (penoplex).

They are characterized by:

low degree of water absorption and vapor permeability;
high resistance to compression;
necessary biological and insufficient chemical passivity;
high fire hazard.

Destroyed by sunlight. Before insulating a log house from the outside, it is necessary to provide for a ventilation gap.

Spray polyurethane foam

Polyurethane foam is obtained by mixing two components in certain proportions. Application of the composition is impossible without the use of special equipment and trained personnel.

The resulting layer has extremely high adhesion to any building material, fills all the gaps in the structure, is a continuous coating without the formation of cold bridges. It has physical and chemical properties similar to expanded polystyrene. Before insulating a house from a bar outside, it is necessary to provide for an additional ventilation device for the interior.

Have you heard this expression: "The tree breathes." This applies to products made from wood. Cells absorb moisture in excess of it and release it when the moisture level drops. This allows you to maintain the most comfortable level of relative humidity of 55-56% in the house for winter living.

Basalt slab is the best choice

How to properly insulate a log house from the outside using mineral insulation?

Due to the "breathing" of wooden structures, the most optimal is a mineral (basalt) insulation for a log house. He passes air through himself well. Installed close to the wall, thereby reducing material consumption and the thickness of the "cake".

Consider how to properly insulate a house from a bar outside for siding in stages, as the most suitable and most technically complex technology.

We carry out the insulation of the log house with 2 layers of thermal insulator. We lay them perpendicular to each other.

Insulation of the corners of a log house is carried out with the same layer of insulation as the wall itself. We pay special attention to the insulation of window and door openings.

When insulating a house from a log, we close the resulting layer of thermal insulator with a waterproofing membrane, which simultaneously plays the role of wind protection.

We fill the timber with a vertical counter-rail 50 mm wide and with a height for siding.

After installing the siding, it needs to be sheathed with additional elements.

Expanded polystyrene and "wet" facade

Before insulating a log house from the outside with penoplex, you need to take care of arranging a ventilation gap between the outer wall and the insulator layer. This must be done due to the low vapor permeability of this insulation material. The gap allows for better removal of penetrating moisture without the formation of condensation on the surface of the wall, protecting it from decay.

Since the penoplex has almost zero indicators of vapor permeability and water saturation, protective membranes are not used when insulating the walls of a house with expanded polystyrene.

Before insulating a house from a log, it is necessary to thoroughly process the entire surface with septic tanks to protect it from insects and wood destruction processes.

We fix the slabs using fasteners with a wide head. The layers of the thermal insulator are laid in such a way that the upper layer overlaps the joints of the lower one.

After processing the expanded polystyrene insulation with a primer, a reinforcing mesh is fixed on it with the help of an adhesive composition. Decorative plaster is applied on it, followed by painting.

With this technology of insulating the house from the outside, the appearance of the house from a bar changes dramatically. It takes the form of a stone, at the same time acquiring additional protection, which significantly increases its service life.

Polyurethane foam - reliable

Before insulating the blockhouse by applying polyurethane foam, it is necessary to provide for additional (possibly even forced) ventilation of the interior.

How to properly insulate a house outside with polyurethane foam? This requires special equipment that allows you to produce a two-component mixture in certain proportions under air pressure.

Failure to comply with the proportionality of the content of the compositions leads to a change in the properties of the final product. Work must be carried out in protective equipment for the skin, respiratory system and eyes.

Before coating with the composition, guides are installed on the wall surface, on which the finish will subsequently be fixed. Additional protection, sealing gaps, leveling the surface in this case for a house from a bar is not carried out.

The composition obtained as a result of a chemical reaction covers the surface with a durable insulation carpet, which adheres perfectly to the wall surface during the entire period of operation, which can be more than 50 years. It is necessary to insulate the corners of the house with a thicker layer so that you do not have to reapply when they freeze. Such a thermal insulator is not afraid of either severe cold or sudden warming.

Installation of finishing is carried out without the use of protective membranes and films.

Before insulating your log house outside with your own hands, decide on the choice of materials and technologies. The resulting result will delight you with energy savings, increased service life and a new facade.

Content

The construction of private houses from profiled timber, ordinary or glued, is popular due to the affordable cost of the material and the ability to do the installation of a log house on your own. But the question arises of the thermal insulation of the building, if it is supposed to live in the house all year round. With a timber thickness of less than 200 mm, heating a house without insulation will require increased costs in regions with cold winters, since the walls will freeze through. Let's figure out how to insulate a house from a bar outside, choosing a heat insulator with suitable properties.

Internal or external insulation?

A house for winter living, assembled from a bar, is recommended to be insulated regardless of the thickness of the walls. This is due to the installation technology - the corners are mounted "without residue", and this design is prone to increased heat loss. The freezing corners of the house become damp, the wood begins to rot and over time the wooden frame collapses.

You can separately decide how to insulate the corners of the building from the outside, using a heat insulator and installing sheathing from wide boards. But such partial insulation is not effective enough and does not decorate the house.

Thermal insulation of a house from a bar outside

Understanding how to insulate a house from a bar, you should pay attention to the key advantages of external insulation over internal:

Installation of internal insulation leads to a shift in the dew point inside the wall structures. This means that condensation occurs at the border of heat and cold and this occurs in a wooden wall. The result is a gradual destruction of wood due to constant high humidity.
A heat insulator attached to the walls inside the room is either vapor-proof (slab or roll material made of foamed polymer, including foil-clad), or absorbs moisture, losing its thermal insulation properties, and therefore needs high-quality vapor barrier (basalt wool, glass wool). In both cases, the internal insulation system completely deprives the dwelling of all the advantages of a building made of natural wood and requires the arrangement of high-quality ventilation to remove steam.

So, to the question on which side it is better to insulate the walls, the answer is simple. Wooden bar is a breathable material for which constant humidity is destructive, therefore it is impractical to mount a heat insulator from the inside, not to mention that it will significantly reduce the area of \ u200b \ u200bthe premises.

The advantages of arranging a heat-insulating layer from the facade of a wooden house from a bar include:

the formation of a dew point outside the walls of the timber - they will be protected from freezing and dampness in the cold season;
carrying out work without interfering with the interior decoration (you can leave the walls in the rooms wooden, do not attach additional cladding);
the ability to provide natural air circulation through the walls, which contributes to a favorable microclimate in a wooden house (but provided that a suitable method of installing a heat insulator is chosen);
reliable protection of walls from atmospheric influences.

Insulation of a log house from the outside is not devoid of some disadvantages, which can be attributed:

linking work to the season and weather conditions (prepare the walls and install thermal insulation in warm dry weather);
the complexity of carrying out work at a height outside with your own hands, the need for the construction of reliable scaffolding;
the need to equip the exterior cladding of the house (siding, block house, etc.).

Thermal insulation of the exterior walls of the house with mineral wool

Preparing the walls

Before insulating a log house, it is necessary to properly prepare wooden structures. To do this, carefully examine the walls of the building from the outside in order to identify possible foci of decay, gaps between the beams, deep cracks in a cracked timber.

Note! Insulation of a house from a bar outside must be done only a year and a half after the construction of a log house from a solid bar, since such a structure is prone to shrinkage. At the same time, it is allowed to insulate a house from laminated veneer lumber immediately after construction, since the material consisting of lamellas of dried wood glued together, practically does not change its geometric dimensions.

At the stage of preparing the walls, it is necessary to carefully process the wooden structures - soak them with antiseptic agents. This will help protect the tree from rotting, damage by insects and microorganisms, and extend the life of the house. Treatment with impregnating compounds is recommended to be performed in two passes, with intermediate drying.

If, when examining the facade, serious cracks and gaps between the crowns are revealed, they must be caulked. You can use the same type of insulation as when assembling a log house, or another natural material - jute, tow, flax.

Installation features

Insulation technology primarily depends on the selected heat insulator. If a roll or slab material is chosen, then a ventilated facade for a house made of timber in the form of a multilayer system is equipped with ventilation gaps. In the case of using sprayed materials, the technology is simplified.

Sprayed thermal insulation

Sprayed polyurethane foam and ecowool are applied directly to the walls, which prevents the ventilation gap between the wooden structure and the heat insulator. In the case of ecowool, this is not important - such a heater is vapor-permeable. But if the house is covered with a layer of polyurethane foam outside under the siding, the walls stop "breathing", and you need to be very careful about the arrangement of ventilation in order to avoid dampness in the premises and the appearance of mold.

Thermal insulation of external walls with sprayed polyurethane foam

Before spraying the material, the walls are cleaned and a vertical crate is stuffed on them, forming cells for filling with a heat insulator. The size of the slats is selected in accordance with the calculated thickness of the thermal insulation layer.

With the help of special equipment, polyurethane foam is sprayed into open cells, and in the case of using ecowool, the technology depends on the thickness of the layer. If the size exceeds 70 mm, a vapor-permeable windproof membrane is attached to the crate. Holes are made in it (one per cell) through which the gaps between the slats are filled. The holes are hermetically sealed.

On top of the polyurethane foam layer, like ecowool, applied by the open method, a windproof film is mounted, a counter-lattice is stuffed and the external finish is fixed. If it is made of wood, the counter grill will provide a ventilation gap to prevent decay of the material.

Arrangement of a traditional ventilation facade

If there is a task to preserve the unique microclimate of a wooden building, it is important to figure out how to properly insulate a house from a bar outside. When insulating external walls, the arrangement of the ventilation gap between the wooden wall structure and the insulation is often neglected. This leads to the fact that the wooden house does not remove excess moisture through the walls and the wood accumulates moisture. The result is the development of mold, decay of the walls of the house.

To avoid negative consequences, it is impossible to install polymer insulation materials or a vapor barrier membrane for a mineral wool heat insulator directly on the wall.

Scheme of thermal insulation of a log house outside

First stage. For proper insulation of a house from a bar, first of all, a vertical sheathing of edged boards with a thickness of 40-50 mm is stuffed onto the walls. A vapor barrier is attached to it. The resulting gap allows air to circulate, removing excess moisture. It is necessary to leave a ventilation slot on top, covering it with a visor made of a wooden slat to prevent the penetration of precipitation.

It is recommended to level the lathing until a strictly vertical plane is obtained, so that it would be easier to insulate the log house from the outside. All lumber used in the "pie" is pretreated with an antiseptic and fire retardant.

Second phase. On the boards of the installed lathing, during the insulation of the log house, the battens of the lathing are fastened under the slab insulation. The width of the slats must match the thickness of the heat insulator. The outermost racks should be at the corner of the wall. The installation step depends on what material it was decided to use to insulate the house:

if it is foam or sheet extruded polystyrene foam, then the gap between the strips should be equal to the width of the sheet;
if the building is insulated from the outside with mineral wool, then the gap should be 10-15 mm less than the width of the slab material.

Stage three. Thermal insulation of walls from the outside requires proper installation of insulation:

polymer plates are inserted into the cells, all joints are filled with polyurethane foam;
stone wool slabs are mounted on the spine.

Additional insulation of the corners is usually not done, but when installing the heat insulator along the edges of the walls, you must ensure that no cold bridges arise.

Stage four. A windproof film is attached on top of the crate. If a polymer material serves as a heat insulator, you can use a regular film, but it is better if it is a material that protects against UV rays. When insulating the walls of a log house with a fibrous heat insulator (mineral wool), it is recommended to use membranes that allow steam to escape outside, but do not let moisture inside.

Fifth stage. Facade decoration can be done using siding, lining, block house and other materials that are relatively light in weight. Wall sheathing should be done by stuffing 40 mm thick counter battens over the wind barrier. This will provide ventilation to the system.

Choosing a heat insulator

To know how to insulate a house from a bar outside, you need to decide on the type of insulation. The functional properties of heat insulators, their cost and installation complexity are evaluated.

Mineral wool

Thermal insulation of a house with mineral wool outside has a number of advantages: high thermal insulation and noise insulation properties, incombustibility, environmental safety, simple installation. The material is gas-permeable, if you use it to insulate a house from a bar, complete with membranes - vapor barrier and windproof. This allows the walls to "breathe".

The disadvantage of mineral wool is hygroscopicity. With a collection of moisture, the thermal insulation properties are sharply reduced. The rather high cost of the material and membranes should also be noted. An attempt to reduce the cost of facade insulation with mineral wool by using a conventional film will reduce the service life of the house and worsen the indoor climate.

Thermal insulation of the facade of the house with mineral wool

Styrofoam

The advantages include affordable cost and high thermal insulation qualities (with a density of at least 35 kg / m3), simple installation, low weight, and hydrophobicity.

Disadvantages: flammability, destruction by ultraviolet radiation and damage by rodents. The material is gas-tight and if the cheapest material is improperly installed, the walls of a wooden building will not "breathe".

Thermal insulation of a log house with foam plastic

Extruded polystyrene foam (penoplex)

Insulation of walls outside with expanded polystyrene will reliably protect structures from freezing. At the same time, the material has a low tendency to fire, and is not damaged by rodents.

Thermal insulation from the outside with polystyrene foam will be more expensive than when using foam, while the problems remain the same - disturbed air exchange in insulated structures, if the material is glued directly to the walls.

Thermal insulation of the facade with penoplex

Foamed polyethylene

High pressure or low pressure polyethylene foam can have a foil surface on one or both sides. Thin roll material is characterized by high thermal insulation performance.

Using it for external insulation, you can save on vapor barrier and wind protection - foamed polyethylene does not need them. The rolled material is mounted with a continuous sheet over the crate, stuffed to create a ventilation gap. The joints of the strips are glued with aluminum tape. Then a counter-lattice is attached to sheathe the walls with siding or decorative panels.

Thermal insulation of external walls of the house with polyethylene

Sprayed PU foam

The main advantage of sprayed polyurethane foam is the ability to create a seamless heat-insulating layer on surfaces of any configuration. The material is durable, environmentally friendly.

But with such external thermal insulation, wooden structures are susceptible to decay, since the insulation does not allow steam to pass through, and it is impossible to create a ventilation gap.

Thermal insulation of the facade of the house with polyurethane foam

Ecowool

A good option for facade insulation. The material is resistant to fire, environmentally friendly, vapor permeable. Such insulation does not disturb the microclimate in a wooden house.

Only two drawbacks can be noted: the high cost and the need to use professional equipment for competent installation.

Thermal insulation of walls of a log house with ecowool

Conclusion

In order for the building to serve for a long time, it is important to choose the right way to insulate the house, and to observe the installation technology. Without insulation, a building from a bar is distinguished by high heat loss, it is difficult to heat it well. Considering the best way to insulate a house from a bar outside, opt for an insulation scheme in which a wooden house can "breathe".

When arranging their own private house, many people wonder how to insulate a house from a bar outside. This is due to the fact that most modern buildings are made on the basis of high-quality wood, but their thermal insulation properties leave much to be desired. To provide a good microclimate in a log house, you need to increase the thickness of the walls, but not everyone is ready to sacrifice aesthetic appeal for the sake of warmth.

Features of insulation of a log house outside

And there is no point in taking such drastic measures. If we apply the correct methods of insulating timber structures, the issue of effective thermal insulation will be resolved in a short time. You can insulate the room both outside and inside. Today we will deal with the topic: "How to insulate a house from a bar outside and how to do such a procedure with your own hands".

Fortunately, these days there is a wide variety of training videos and additional material that will make your upcoming events simpler and faster. If you have the desire and time, you can insulate your premises in the best possible way. So, first things first.

Do-it-yourself insulation of a log house outside

Many wooden houses do not have a sufficiently thick wall, therefore, it is difficult for them to endure the harsh Russian winters with severe frosts and strong winds... Even a high-quality sealing of all the slots of the log house is unable to improve the thermal insulation properties of the building.

Therefore, so that the house does not freeze under the influence of extremely low temperatures and maintains the optimal temperature regime, it is necessary to insulate it from the outside. Equipping a good thermal insulation system is not as difficult as it seems at first glance. Today you can find a wide range of different thermal insulation solutions, built using very simple technologies, which allows you to carry out a number of home insulation activities without special skills or abilities.

And to simplify the task ahead, you can watch a lot of training videos with a detailed explanation of each step.

Correct external insulation of a log house involves the use of different materials. The main thing is that they meet the following requirements:

had excellent fire resistance and were not exposed to high temperatures;
differed in low thermal conductivity;
were environmentally friendly and did not emit toxic substances during operation;
had good thermal insulation performance;
do not accumulate moisture;
let in various evolved vapors from the room;
differed in good noise insulation performance.

With regard to external insulation, this method has many advantages, namely:

the possibility of a quick transformation or renovation of the house;
reducing fuel costs by improving thermal insulation;
providing effective protection against any external factors: noise, moisture, dampness;
significant savings in free floor space;

If you follow some of the instructions, study the photos and videos with detailed warming instructions, the upcoming procedure will be completed much faster and more productively than expected. Experienced experts advise paying attention to the following subtleties:

when installing insulation, you must not leave this material outdoors in the open air. If it is exposed to rain, its thermal performance is likely to deteriorate greatly. Therefore, store the insulation in a warm, well-ventilated and dry place;
laying the bars of the horizontal lathing with a step smaller than the width of the insulation by 15 millimeters, you can refuse to use fasteners;
when laying insulation, be sure to follow the safety rules and use personal protective equipment. These include a respirator, gloves, glasses.

Correct installation of insulation in houses made of laminated veneer lumber involves the use of three main methods:

arrangement of a hinged ventilated facade;
the use of foam as insulation;
spraying walls with polyurethane, for which it is necessary to use special equipment.

According to experts, it is most advisable to apply hinged ventilated facade method because it has many advantages, including:

What materials will be the most effective when insulating the walls of houses from laminated veneer lumber

Today there are a lot of excellent insulation materials with high thermal insulation properties and durable construction. Among the most popular are:

fiberglass;
mineral wool;
basalt mats;
expanded polystyrene and others.

Each of the above-mentioned heaters has its own pros and cons. They also differ in the method and features of installation, so before choosing a specific offer, you should make sure that you can install it yourself without the help of a specialist. The main thing is that the selected material meets all quality and safety requirements.

A good insulation for the walls of a house made of laminated veneer lumber should have:

excellent thermal insulation;
incombustibility;
moisture resistance;
the ability to provide effective prevention of heat transfer between the inside of the room and the outside;
environmental safety.

How to insulate a house from a bar. How to properly insulate

Warming a house from a bar - painstaking and responsible process... But if you take into account all the "pitfalls" in advance, weigh the "pros" and "cons" of each heater, the forthcoming procedure will be performed without the slightest difficulty.

It should be noted that today mineral wool is the most popular material for insulating walls made of laminated veneer lumber from the outside. Its slabs have small dimensions, due to which the additional load on the structural parts of the room is significantly reduced. In addition, this option is very cheap, perfectly retains heat inside the room and prevents the penetration of atmospheric moisture inside. Also, mineral wool is famous for its incombustibility, and due to its softness and elasticity, it quickly takes on the required shape and does not form bridges during installation, remaining resistant to thermal deformation.

The installation of insulation can be carried out under the block house or with the help of plastic siding, which is used to sheathe the walls of the house from the outside. The complex of installation work on house insulation can be divided into several separate stages. Let's talk about each of them in more detail.

Vapor barrier

Before proceeding with the installation of insulation, it is necessary to provide an effective vapor barrier system. At this stage, you can use aluminum foil, vapor barrier film or roofing material. The procedure ensures good ventilation properties of the facade under the film and implies the installation of vertical battens 2.5 centimeters thick at a distance of one meter from one another. After that, a vapor barrier layer is installed on the inserted slats over the entire surface. Holes with a diameter of 20 millimeters are made between the base rails for successful ventilation.

The presence of such a system will prevent the penetration of atmospheric moisture inside and the accumulation of internal moisture under the film, which can cause rotting of the wooden wall. To fix such a vapor barrier, nails or staples are used, and the attachment points are sealed with tape to protect them from water penetration.

Installation of the frame for effective thermal insulation. Installation of thermal insulation

In order for the final result of insulating the walls of a log house to be as successful as possible, pay attention to such a mandatory procedure as the installation of a frame. As a frame, you can use high-quality boards 100 millimeters wide and 40-50 millimeters thick, which are mounted vertically on the wall on the edge. The distance between the boards should not be less than the width of the insulation.

The timber is attached to the facade using self-tapping screws. During installation, it is necessary to control the position of the timber using a level or plumb line. If the lathing is uneven, the installation of the cladding at the final stage will be ineffective.

To prevent gaps between the boards, rock wool is installed very tightly. Material with a thickness of 50 millimeters is laid in two layers using semi-rigid, elastic plates with a density of 80-120 kilograms per cubic meter. In this case, the plates adhere perfectly between the frame boards and do not slip during operation.

After completing the installation of thermal insulation, you should proceed to laying a waterproofing film, which is designed to transmit steam and retain water. The film is laid on a heat-insulating layer and nailed with staples or nails from the frame. When joining the film, leave at least 5-10 centimeters of overlap, and cover the formed joints with self-adhesive tape.

Laying the second layer of the frame

The frame of the heat-insulating layer is stuffed with slats 50 mm wide and up to 3 centimeters thick... This step allows free air circulation between the skin and the vapor barrier to prevent the formation of condensation that appears on the waterproofing layer. The resulting space is covered with a thick metal mesh to prevent the entry of insects and rodents.

As for the outer cladding, in most cases it performs only a decorative role, so what material will be used for the cladding is up to you. The main thing is that it matches your design requirements and complements the overall style concept. As a facing material, you can use both wooden lining, plastic siding or any other material.

Ready-made heaters

It is no secret that recently on the market you can find a lot of ready-made heaters for effective thermal insulation of walls made of laminated veneer lumber. They are manufactured according to the highest standards and high technology. The most popular of them is the famous " Penoplex", Which is produced by a Russian company. The material is offered in the form of soft and high-quality thermal insulation boards, which are an effective type of expanded extruded polystyrene foam, created using a special technology.

Such panels are famous for their high resistance to external influences, strength and long service life. They are able to prevent the penetration of moisture, dampness, bacteria, mold and other microorganisms into the interior of the room, providing the correct microclimate and comfortable living conditions. Now "Penoplex" is a new word in the world of domestically produced heat-insulating structures.