How to insulate a wooden house from the inside. Insulation of a wooden house from the inside with ecowool, basalt wool, glass wool, expanded polystyrene Insulation of the walls of a wooden house from the inside with your own

An important stage in construction modern houses is their thermal insulation. The main goals of insulation are to create a comfortable temperature in the premises and more economical consumption of energy resources used for heating.

Both wood and stone buildings need thermal insulation.

According to building regulations, insulation must be done externally. The reason is that the dew point is located at outside rooms in insulating material or in the front layer of load-bearing structures. With this method of thermal insulation, condensation will not form on the walls of the rooms.

But this insulation option is not the only one. Thermal insulation is carried out not only from the outside, but also from the inside. In some situations, internal insulation is the only correct option. For example, if the owner of a home wants to preserve the external presentability that wooden buildings are distinguished by, or the architectural appearance of the house has historical value.

We suggest you learn how to insulate the walls of a wooden house from the inside with your own hands using different types of thermal insulation materials.

Causes of heat loss in a wooden house

As a rule, wooden houses are very comfortable. Such buildings are cool in the warm season and warm in the winter.

A decrease in temperature inside a wooden house is caused by two main factors:

  • improper vapor barrier;
  • cracks that appeared in an old building due to the drying out of wood over time.

Is it possible to insulate wooden house from the inside? Of course, and if the house is old, it’s even necessary! In order to perform thermal insulation from the inside, it is necessary to choose the right materials and follow the technology provided for such a task.

Insulation works for both new and old wooden houses are carried out in stages.

How and with what to properly insulate a wooden house from the inside with your own hands? Let's consider the stages of internal wall insulation and select environmentally friendly insulation for internal thermal insulation.

Preparation

All actions related to the construction and improvement of residential buildings must be preceded by calculations - this rule also applies to the insulation of a wooden building.
Calculations make it possible to find out the degree of effectiveness of thermal insulation and find out whether it is, in principle, possible to carry out insulation from the inside.

Insulating material always fulfills its purpose, but the location of the dew point plays a decisive role. Under no circumstances should it be placed on the inside of load-bearing structures, especially in insulating material, and the task of the calculations is to demonstrate this.

When placing the dew point from the inside the room will be quite comfortable temperature regime, but in winter there is always dampness, leading to soaking of thermal insulation materials, rotting of wood, and the formation of mold.

Provided that the dew point does not end up in the inside of the room even in winter, thermal insulation can be done from the inside.

But at the same time it will inevitably be necessary to sacrifice interior space residential premises.

Selecting materials

There are a number of requirements for materials used for internal thermal insulation of wooden houses:

  • low heat conductivity;
  • fire resistance;
  • strength;
  • environmental safety.

Thermal insulation methods are selected based on the materials used for this purpose.

How to insulate a house from the inside? Currently, several types of insulation for house walls are produced:

Modern insulation materials have a large number advantages: lightness, flexibility, excellent thermal insulation parameters.

Seal the joints

Having decided to take on the task of insulating a wooden house with your own hands, you need to take into account one important point. A wooden structure shrinks, a process that takes several months. In addition to shrinkage, when brought into operating mode heating system Wood in the rooms begins to dry out at high speed. This is reflected in the configuration of logs and beams.

Initially densely spaced wooden elements at the junction points can form large gaps, releasing heat into the street.

For this reason, the first step in thermal insulation of a wooden household should be sealing the seams.

For this purpose, sealants and other materials are used. It is convenient to seal the cracks with a wide chisel.

If the gaps are large, use rolled tow.

At this stage the main thing is to stop the exit warm air through the cracks.

Important! Do not forget about the safety of electrical wiring when sealing cracks, especially if it is located on the surface: in this case, mandatory separate it and isolate it from the wall.

Protection of wood from fire and biological factors

Part of the load-bearing structures located from the inside will be covered with an insulating layer for a long time. Taking this into account, the wood should be treated with agents that protect it from fire and mold. You cannot save on treatment with such compounds, and you need to choose high-quality products to ensure good protection.

When treating load-bearing structures with agents that have fire and bioprotective effects, you need to take into account that they also need treatment wooden fencing, since they will also be located in the insulation.

Ventilation

For what reason did owners of private houses previously not think much about ventilation of buildings? The thing is that previously ventilation was carried out naturally - through loosely located windows and cavities in the walls. This is typical for old people log houses and now.

The materials used for the construction of modern buildings avoid gaps and cracks through which air currents can circulate. But this does not mean that there should be no air movement in the rooms at all. Modern buildings are designed ventilation systems. Such systems remove recycled air from rooms and provide an influx of fresh air.

Properly performed internal insulation must provide ventilation. Only in this case the microclimate in the house will be optimal.

The insulation itself, which has a porous structure, for example, mineral wool, also needs ventilation. For this reason, there must be a small distance between the supporting structure and the heat-insulating material for unhindered air circulation and removal of excess moisture. In this case, the humidity level throughout the room will be uniform.

Making such a gap is not difficult. On load-bearing structures equal distance a wooden strip measuring about 25 mm is attached, and a vapor barrier film is attached on top of it. Thus, a small distance is created between the wall and the heat-insulating material for air movement, which protects against moisture internal structures and insulating material.

Note! If the walls of the building are made of logs with a cylindrical configuration, then ventilation gaps are formed naturally. If laminated timber was used to build the house, it is recommended to take care of designing the ventilation gap.

Vapor barrier layer

The use of thermal insulation materials such as glass wool, mineral wool, and expanded polystyrene (non-pressed variety) for insulation requires the installation of a vapor barrier.

It is mounted as follows: a vapor barrier membrane is attached to the ventilation sheathing. A stapler is used for fastening.

Important point! During installation vapor barrier membrane Be sure to pull the film tightly so that there is a gap between the supporting structure and it for ventilation.

Joining two sheets vapor barrier film overlapped by at least 10 cm and secured with tape.

If an extruded type of polystyrene foam is used as a thermal insulation material, then there is no need for a vapor barrier layer. Extruded polystyrene foam has waterproofing properties that prevent moisture penetration.

Fencing installation

In all options for thermal insulation of internal load-bearing structures of log or timber house, with the exception of using isoplat, installation of a fence is required. Typically, timber with square section(50 mm). The distance of the wooden block depends on the width of the insulating material.

When using mineral wool, the step between the placement of the bars should be 10 mm smaller in comparison with the width of the heat insulator in order to achieve maximum tightness.

When using extruded polystyrene foam, the step is made in accordance with the width of the sheets of material.

Important! Be sure to process everything before installation. wooden blocks composition with fire and bioprotective properties.

The bars are attached with screws directly to the wooden load-bearing structures. If there is a sheathing to form a ventilation gap, the beams are attached to the installed slats. It is recommended to insert fasteners into pre-made small holes (use a thin drill for this) so that the wood does not crack.

In some cases, the fence is made from plasterboard profiles, attached to supporting structures using direct hangers. This is done only if the cladding is made of plasterboard.

Wooden bars are preferable because they have lower heat conductivity compared to metal products.

In the process of thermal insulation of the ceiling, the fence is designed according to a similar principle. When insulating a floor, wooden logs to which the finishing coating is attached serve as a fence.

Installation of heat insulator

Insulation material is placed in the cavity between the enclosing elements. If the heat insulator is in the form of sheets, then wall installation should start from the bottom, and when using roll material- from above, moving down.

Mineral wool sheets are placed sideways, due to which their reliable fastening. But this material, just like foam plastic, needs additional fastening with nails (one for each sheet).

Thermal insulation in rolls is attached to the top of the wall with one screw, then the material is unrolled and attached with nails at a distance of one meter.

First, solid sheets are installed, and the remaining areas where trimming is necessary are filled with insulating material at the very end.

If the roof is sloped, the ceiling insulator unfolds from the bottom in the direction from bottom to top and is secured with nails or with a cord. Small nails are nailed to adjacent bars at a distance of 15 cm, and after laying heat insulating material, a cord is stretched in a zigzag between the beams, which will ensure reliable fastening of the insulation.

When insulating with extruded polystyrene foam, all existing gaps in the seams are sealed construction foam. Applying foam requires pre-wetting the surfaces. Dried excess foam is cut off with a knife.

Video about insulating walls from the inside

The video tutorial below shows how to properly insulate a wooden house from the inside:

Everything about insulating walls from the inside of a wooden house: what material is best to use, the need for internal insulation, preparation and lathing of walls, how to properly insulate the inside with mineral wool.

If you believe the experts, then external insulation of a wooden house is much more preferable than internal insulation. This is related to the concept of dew point.

The formation of condensation on the walls inside the building under the insulation will go deep into them, while on the outside it will not go beyond the hydro- or thermal insulation and will not reach the wood.

Insulating walls from the inside of a wooden house is only possible if other options are not acceptable for some reason.

The need for internal insulation

Before you decide on such interior finishing, you should consider what they may entail:

  1. Disruption of the natural “breathing” of the walls, which will have to be restored by creating ventilation.
  2. Changes in the microclimate in the rooms due to increased humidity.
  3. Reducing the area of ​​each room.

If such good reasons are not a reason to change your mind, then it’s worth looking positive aspects internal insulation and focus on them:

  1. The opportunity to insulate the walls of a wooden house from the inside with your own hands at any time of the year, devoting as much time to it as possible.
  2. The beautiful appearance of the facade, especially if it is made of rounded logs, can be preserved in its original form.
  3. Such work requires more easy installation that even a beginner can do.
  4. Internal insulation of the walls of a wooden house is several times cheaper than external insulation.

Modern materials and technologies make it possible to produce construction and finishing work of any complexity and quite according to decent price. Before deciding to take any action, you should become thoroughly familiar with what materials the modern market offers and answer the question of what is the best way to insulate the walls of a wooden house inside.

Of course, the choice of material directly depends on the qualities that the building will require from it. If this frame house, then these will be some properties, and for a log house made of thick logs – others.

Today, insulation manufacturers offer the following types materials:

All of the listed materials have a place in the modern construction market, but the choice remains with the consumer, which of them he will entrust with the safety and warmth of his home.

Preparation and lathing of walls

As always, insulating walls in a wooden house from the inside (the video will tell you about this) begins with preparing the walls for work:

  1. Even the most best wood When shrinking, it can form gaps at the joints. They should be sealed with sealant or other means.
  2. As a preventive measure, it is imperative to carry out bio- and fire protection of the walls. Since thermal insulation is installed for years, this will save it in any unforeseen circumstances.

    To protect the house from rotting, it is imperative that when laying thermal insulation, you need to do air gap between her and the wall. This does not apply to walls made of rounded logs.

  3. Caulking the walls is necessary if they are made of timber. Jute is well suited for this, as it is the cheapest material tested by many generations of builders.

In no case should you ignore the preparation of the walls, as this may affect the durability of the thermal insulation and its quality.

Owners should think not only about what can be used to insulate the walls of a wooden house inside, but also how to do it. It is imperative to make a crate. It is because of it, first of all, that the area of ​​the room inside is reduced, but it also gives the entire structure the shape and necessary stability.

Used for lathing square beam with a cross section of 50 mm, and the pitch depends on the size of the insulation. It is important to install the bars so that the material fits tightly into the formed cells if it is mineral wool, or they are adjusted exactly to size for polystyrene foam boards.

Before installation, the bars must be treated with fireproof and antifungal agents. All structural elements are attached to the wall using screws.

After the lathing has been installed in each room, you can proceed directly to solving the question of how to insulate the walls inside a wooden house.

Insulation of walls from inside a wooden house

Minvata

As a rule, mineral wool in a roll or in the form of a “mat” is used to insulate walls from the inside. To cope with the first one, you will need 4 hands, while the second one can be handled independently.

Laying is carried out from floor to ceiling, maintaining tight joints so that the seams are not visible. If there are any gaps, they need to be sealed, and then proceed to laying the next layer of the “pie” - the vapor barrier layer. It is necessary rather to protect mineral wool from exposure external environment rooms than walls.

The vapor barrier should be overlapped using a stapler so that there are no seams, and if there are any, they should be immediately covered with tape.

After the work has been done, it is necessary to install another sheathing, but opposite to the first. It is on this that the finishing coating will be attached.

Foam plastic

This material can also be attached to the sheathing, but there is a simpler method that will not take up much living space. The prepared and treated wall must be coated with a layer of glue and sheets of foam plastic placed on it in dense rows.

After the adhesive base has completely dried, the slabs can be secured with nails, the gaps can be sealed and finishing can begin.

In conclusion, the following conclusions can be drawn:

  1. Internal insulation is not advisable, but is acceptable if necessary.
  2. There are materials suitable for this work.
  3. Before you begin insulation, you need to properly prepare the walls.

If you lack knowledge about the composition of the material and the correct installation, you should consult with a specialist so that years later you will not regret wasted money. Yes, such a simple, at first glance, work like caulking walls requires skill and attention, and without creating ventilation, the “life” of the building can be significantly shortened. All this should be thought about before starting insulation. interior walls wooden house.

In order for insulation of a wooden house from the inside with your own hands to be effective and correct, first of all you should understand the process itself, and only after that make a decision.

Previously, insulating the walls inside a wooden house was not the most important issue, since to retain heat in the house they simply increased their thickness. But the emergence of a large number of thermal insulation materials on modern market, allows you to look at the solution to the problem from a different perspective. Since increasing the thickness of the wall is quite complex and expensive, it is necessary to study the pros and cons modern insulation materials and technology.

Insulation of the walls of a wooden house from the inside - beautiful and high quality

In principle, wood has good thermal insulation properties. Due to its natural structure, this building material It retains heat perfectly and, due to its ability to “breathe,” creates an excellent favorable microclimate in the house.

But there are still heat losses, largely due to the problem of connecting logs, gaps appear in corners, crosscuts, doors and windows. Additional gaps may occur if natural shrinkage buildings under the influence of various natural factors. Therefore, the issue of the tightness of such dwellings is always relevant, and as a result, insulation of the internal walls of a wooden house is simply necessary.

How to avoid mistakes

Obviously, insulating walls in a wooden house from the inside is quite simple from a technical point of view, but this option is not very widespread. There are several reasons for this, and reducing living space is far from the worst thing.

Therefore, to find out whether it is possible to insulate a wooden house from the inside, and most importantly how to avoid mistakes, you should pay attention to several factors:

  • Insulated walls do not warm up well from the inside.
  • Dew point. To better understand what it is, you should watch the video in this article.


When temperatures change, the dew point can shift into the thermal insulation layer, which will lead to the formation of condensation, dampness and deterioration of the insulation itself. Also, the formation of fungus and mold, which is destructive for a wooden house, is possible.

This problem will be partially solved by the presence of a vapor barrier layer. But in this case, you need to take care of installing effective forced ventilation in the room so that you don’t feel like you’re living in a plastic bag.

Also, a solution to the problem of shifting the dew point is to increase the thickness of the thermal insulation layer, but this is extremely unprofitable for the resident, since the living space is significantly reduced.

Before you start

Before you start insulating the walls of a wooden house inside, you need to determine:

  • What type of wood was used in the construction of the building?. Because different types wood have different properties and characteristics, which means there will be different costs for insulation.
  • Causes of heat loss, namely cracks, cracks in logs, defects in insulation padding.

Having identified the shortcomings and determined the range of upcoming work, we move on to insulating the walls.

The general scheme for insulating a wooden house is shown in the photo:

  1. Vapor barrier system;
  2. Thermal insulation;
  3. Waterproofing;
  4. Cladding with clapboard.

You need to know that it is best to insulate walls in the spring or summer season.
If the house was built not long ago, then insulation from the inside of a wooden house is carried out only after its shrinkage, that is, a year after construction was completed, in order to prevent the emergence of new cracks through which moisture can enter and spoil the material.

All work on insulation from the inside is conditionally divided into the following stages:

  • Surface preparation.
  • Caulking cracks.
  • Creation of a vapor barrier.
  • Installation of sheathing.
  • Laying insulation.
  • Creation effective system ventilation.
  • Finishing work.

Material selection

Currently, do-it-yourself insulation of walls from the inside of a wooden house is usually done using synthetic insulation. The main indicators for such materials are resistance to ignition, as well as high thermal insulation characteristics.

Ecowool

Currently, the so-called is gaining increasing popularity.

This is explained by the very structure of this material and the properties it exhibits:

  • Moisture inside the room can pass between the fibers almost unhindered. But at the same time, the interfiber space itself remains dry, which means that condensation of excess water vapor does not form on the wall.
  • Also, thanks to this property and the presence of mineral antiseptics, protection against mold and fungal infections on the walls of the room is provided.
  • The ability of the material to “breathe”.

Thanks to these properties, it is used to ensure heat retention both outside and inside.

The material is sprayed with a complete thermal insulation layer, which is tightly adjacent to the log or timber. Thanks to its structure, ecowool fills all existing voids and cracks, thereby preventing possible heat loss.

Professionals apply ecowool using special devices, but if you carry out the internal insulation of a wooden house yourself, we recommend watching a video that provides instructions on how to properly apply this material.

Basalt wool, glass wool

The use of another type, such as basalt wool, is also intended to solve the problem of thermal insulation, which it successfully copes with, just like glass wool. Thermal insulation characteristics These materials are quite good, but when they are used in internal insulation, another problem arises.

This is the penetration of moisture into the insulating layer, which can lead to a sharp decrease in the thermal insulation qualities of the material. The price for such materials varies from 500 rubles. up to 1500 rub.

To solve moisture problems prerequisite, when using these thermal insulation materials, is the presence of a vapor barrier film. She provides internal ventilation, which eliminates excess moisture.

No less common thermal insulation material is polystyrene foam (foam) boards.

Positive aspects of using polystyrene foam:

  • Elasticity;
  • Ease;
  • High thermal insulation characteristics;
  • High sound insulation properties;

Thanks to these qualities, it is possible to use fairly thin slabs, which reduces the reduction in usable area to a minimum.

Also important is the gradual improvement of foam insulation technologies, which significantly affects its characteristics.

For insulation wooden walls sometimes the so-called method is used in-wall insulation. This method involves the use of deformation-resistant insulation. These include flax wool, flax and hemp tow.

The method is used only when the building is just beginning to be built. Insulation involves placing material into the interior space, which eliminates the appearance of cracks and walls.

In conclusion

Of course, in this article we only talked about part of the technologies used. But the types of thermal insulation materials we have considered are the most popular due to their durability and practicality.

This article will be useful to you if you refer to the section on insulating a loggia. Let's hope that our recommendations for insulating the walls of a wooden house from the inside will help you and make your home warm and cozy.

Despite the development modern technologies in construction, wooden houses are still often found in holiday villages, villages and villages. At the same time, one of the main issues when building such a house is proper organization of wall insulation.

Made with high quality, using the most the best materials, in accordance with regulations, thermal insulation helps maintain optimal temperature in the house in the summer, and with the onset of the long, harsh Russian winter.

As is known wood is extremely susceptible to mold development and service life wooden structure directly depends on the degree of preservation of structural elements. With the onset of winter and the first frosts, the heating season begins.

We strive to provide comfortable temperature indoors, and meanwhile logs and wooden beams, from which the walls are made, are subjected to a real test. Warm on one side, they come into contact with cold outside air on the other., and the result of this is a constantly formed, condensation that is harmful to wood.

The main goals of thermal insulation are to reduce heat loss in winter and maintain important elements in the structure in proper condition.

Conventionally, wall insulation can be divided into two types:

  • walls of a wooden house;
  • insulation of house walls.

There are many skeptics who condemn this or that method, but each of them has its own pros and cons. The choice of a certain insulation method is due to a number of reasons and factors, but with strict adherence to technology and proper execution of work, selection of appropriate materials, any of them turns out to be effective.

The main difference between these two methods of insulation is essentially that on which side of the load-bearing walls of a wooden house will the insulation be carried out?, and, as a result, how effective it will be in terms of heat conservation and benefits for the entire structure.

Owners and owners of wooden houses resort to insulation from the inside, not wanting to cover unique, beautiful facades buildings made in original ways masonry or facades of architectural value. Such insulation will not be noticeable from the outside, and the appearance of the building will not change.

External insulation

The goal of external insulation is maximum efficiency.. It involves the creation of an insulating structure with outside load-bearing wooden walls and is more aimed at extending the life of the building, preserving all its important elements made of wood, protecting them from the destructive forces of nature and surrounding weather conditions.

External wall insulation remains quite common, often used in construction and renovation. And this is confirmed by a number of advantages:

  • all temperature fluctuations, all the vagaries of the weather are taken over by a layer of insulation and finishing, respectively service life wooden elements home increases significantly;
  • the opportunity to insulate a long-built house. Often such houses are purchased ready-made in holiday villages along with plots, and it can be financially difficult to immediately rebuild a new house.;
  • the interior of the house remains untouched, which is convenient from the point of view of living and organizing everyday life;
  • opportunity to choose new look Houses due to the finishing

Pie wall

In other words - composition and order of all insulation elements. When insulating a wooden house from the inside, the so-called “pie” can be represented as follows:

  • load-bearing wall;
  • sheathing;
  • insulation - mineral wool;
  • vapor barrier film;
  • finishing layer.

wall pie

Which insulation to choose?

When choosing insulation for the walls of a house, first of all should be addressed attention to the ability of the material to pass steam and air while retaining heat.

The severity of the climate of the region of residence should also be taken into account.

Insulation materials include:

  • interventional insulation materials used during the construction stage;
  • and insulation materials used for insulation from the outside or inside.

Inter-crown insulation is used in laying inter-crown joints. Such insulation can be synthetic or natural (from jute, moss, flax, hemp). The main property of these materials is low thermal conductivity and the ability to accumulate and release the resulting moisture. The most common today are insulation made from flax and jute fiber.

Basalt (mineral) wool is widely used to insulate walls from the outside or inside., or fiberglass wool in the form of rolls or mats, with a density of 80-120 kg/m3. In addition, it is an environmentally friendly material.

It is not recommended to use polystyrene foam or penoplex as an element of the pie., since these materials are vapor- and moisture-proof and prevent air exchange between the house and the outside environment.

The following materials may be suitable for insulation:

Mineral wool - best option insulation

Sealing seams and joints of forming elements

This method is internal insulation walls, aimed at sealing joints and cracks in logs. In this case, various sealants are used (silicone, latex, acrylic, linen rope, tow). This method is convenient because it can be easily done with your own hands and does not require special skills, it does not interfere with the release of steam and is the most economically profitable.

Technically it is carried out as follows:

  • the edges of joints and cracks are cleaned,
  • cavities are filled with rope, foam rubber;
  • a layer of sealant is applied on top;
  • the sealant is smoothed with a brush until a smooth surface is formed;
  • Remains of sealant are removed with a rag.

Sealing with sealant

Sealing seams with fabric

Sheathing preparation and installation

When installing the sheathing, you should rely on the thickness of the insulation. The thickness of the bars will be chosen the same. Most often the timber is chosen 10-50 mm thick and 100 mm wide.

Mount the sheathing transversely to the masonry of logs with a step between the bars equal to the width thermal insulation mats with minus 3 centimeters for a tight fit. The height of the sheathing is individual for individual rooms.

Parallel to the laying of logs, the sheathing is also installed in the same way (the so-called “counter-lattice”). To install the sheathing, you should choose quality material without traces of rotting. Before installation, all wooden parts and surfaces should be treated with an antiseptic.

PLEASE NOTE!

Do not use thin boards for lathing, since it simultaneously serves as a place for attaching finishing coatings.

Lathing

Do-it-yourself insulation of walls from the inside of a wooden house

Insulation of walls inside a wooden house using mineral wool. When using this method, glass wool, slag fiber, or mineral fiber mats are used.

This material is the most effective in terms of thermal insulation and sound insulation, and is environmentally friendly. However, due to its structure, mineral wool allows steam to pass through and is capable of storing water.

For this reason, when using it in insulation, layers of hydro- and vapor insulation must be used.

Mineral wool is available to customers in the form of rolls and mats. When insulating, it is most convenient to use mats, simply inserting them between the profiles of the sheathing made. In this case, the gaps between the mats should be no more than 2 mm. Such gaps are subsequently sealed with adhesive tape - preferably foil, or plumber's tape.

Step-by-step installation:

  • being prepared required quantity mineral wool mats, based on calculations of the square footage of the walls of the premises;
  • mineral wool is tightly inserted between the sheathing beams;
  • the top mats are trimmed to height;
  • Gaps and seams between mats are taped with mounting tape.

Some builders use foam plastic when insulating walls indoors. However, the main criterion for choosing in its favor is its low cost. From the point of view of efficiency, polystyrene foam does not have the property of transmitting steam, and the result of its use in the absence proper organization vapor and hydro insulation, will become the so-called “ greenhouse effect "and the inevitable development of mold in rooms with such walls.

Laying mineral wool

Installation of insulation

Vapor barrier and waterproofing of walls

Insulation of wooden houses begins with waterproofing. This is the closest to load-bearing walls a layer of special film, main task which is to ensure air circulation and protection of the insulation layer from getting wet and freezing, preventing its destruction and preserving the tree from the development of mold bacteria.

Waterproofing is one of the the most important moments in wall insulation.

Waterproofing membrane

During the work, anti-condensation membranes, diffuse breathable films, polymer multilayer films, and vapor barrier membranes are used. When waterproofing, it is important to maintain complete tightness. To do this, the film is overlapped and nailed down using a stapler and staples, and the seams are sealed with mounting tape.

Vapor barrier is a finishing coating that is laid on top of mineral wool and serves to protect against the penetration of water vapor into the insulation structure.

The fastening is similar to the installation of waterproofing.

Vapor barrier

Conclusion

Thus, responsibly organized insulation of the walls of a log house can play a big role in the long and reliable operation of a wooden house. It will help reduce heat loss and also protect load-bearing elements buildings from all kinds of weather conditions.

However, the preparation of such an event should be approached responsibly. The service life of your home depends on how well it is carried out.

Useful video

Tips for insulating a wooden house from the inside:

Owners think about the need to insulate a wooden house when the temperature in the rooms is low in winter, the appearance of dampness and mold on the walls, and the high cost of heating.

Professional builders recommend insulating the walls of buildings from the outside, but there are situations when this is unacceptable. In such cases, thermal insulation is installed indoors. Such work will not cost much. The article describes how to insulate walls in a wooden house from the inside and outside.

Features of wall insulation in a wooden house

Wood used in construction has features that must be taken into account.

Wood is a vapor-permeable material; if used incorrectly, it becomes damp, becomes infected with fungus, becomes moldy, and is destroyed by pests. Over time, the house settles and cracks appear in the logs or beams.

Old house made of logs, traces of aging on the outer walls are visible

Properly designed and installed system insulation reduces negative impact to a minimum - otherwise there is no need to talk about the durability of the structure.

Comparison of thermal insulation methods

Insulation of wooden walls is possible from the inside and outside; each method has advantages and disadvantages. Accept the right decision The information collected in the table will help you know how to install thermal insulation.

AdvantagesFlaws
Insulation inside the building
Saving appearance HousesThe outer parts of the walls are not protected from adverse weather conditions
Can be combined with major or cosmetic repairsDecreases usable area rooms by the thickness of the insulating structure
Reconstruction does not depend on the time of yearThe dew point moves inside the building, condensation may form
There is no need to install scaffolding; one person can do the job.Loss of heat-storing properties of wood
External thermal insulation
Usable area is preservedThe insulation is protected external finishing– the volume of construction work increases
The dew point of wooden walls shifts into the insulation layer - the walls do not collapse, there is no condensation in the roomsThermal insulation is carried out in warm time year
Insulation using the ventilated facade method prevents the appearance of fungus and moldWorking at height will require strict adherence to safety precautions. It’s impossible to work without helpers

Before deciding on the method of carrying out the work, it is necessary to familiarize yourself with the options for how to insulate a wooden house from the inside or outside.

Material selection

To insulate the internal surfaces of house walls and facades, many specialized insulation materials have been developed, each of which, however, requires proper use.

Insulation is supplied in the form of piece products or rolls.

When choosing, take into account:

Polystyrene has long been successfully used for thermal insulation of buildings. The mechanical properties and size of the sheets allow you to insulate the house with your own hands, and if you have the skill, you can do without assistants. Two types are used in thermal insulation sheet material made from polystyrene. They differ in the method of production.

Foamed polystyrene is commonly called polystyrene foam. Represents plates white. Balls are visible on the fault different sizes.


Foamed polystyrene (foam)

Erudite polystyrene is most often light yellow or orange color, it is denser than foam.

Foam plastic

The material is well suited for insulating a wooden house.

Advantages:

  • light weight - 98% of the volume of the product is air;
  • maintaining dimensional accuracy during long-term use;
  • low thermal conductivity;
  • Possibility of installation in different ways;
  • self-extinguishing within 4 seconds - without maintaining combustion with an open fire, the foam goes out.

Disadvantages of polystyrene foam:

  • releases toxic substances when heated above 80 o C;
  • easily damaged by mechanical stress;
  • quickly deteriorates when exposed to sunlight;
  • low vapor permeability, which must be taken into account and ventilation of the facades must be provided.

When purchasing insulation, it is worth keeping in mind that material with a density of 15 kg/m3 cannot bear mechanical loads, so it cannot be plastered. Foam plastic with a density of 25 kg/m 3 can be plastered and used for street insulation. When the insulation weight is 35 kg/m3 and above, you can walk on it and most often the material is used for thermal insulation of floors. It is not economically feasible to use foam with such a density for walls.

Extruded polystyrene

Insulation is sold under the names Penoplex, Penoplex. The sheets have grooves (recesses) along the edges, which allows them to be laid with overlap. This eliminates additional sealing of seams. The density of the material is higher than that of foam plastic; any extruded polystyrene can be plastered.


Joining seams of extruded polystyrene

As with the use of polystyrene foam for insulation of wooden houses, ventilated facades are installed.

Mineral wool

Mineral wool is obtained by melting rocks. It consists of fibers between which there is large number air, which provides thermal insulation properties. IN trade organizations supplied in rolls or in slabs of standard sizes.

Advantages of the material:

  • ease of installation;
  • reasonable price;
  • does not support combustion;
  • high rates of heat and sound insulation;
  • environmental friendliness;
  • high vapor permeability comparable to wood;

The main disadvantage is the ability of mineral wool to absorb water, thereby losing its thermal insulation properties. Over time, the material cakes and shrinks, and its performance characteristics decrease.

To reduce the impact of water and moisture from the air, mineral wool is protected with a special waterproofing film.

Glass wool

The structure of glass wool is similar to mineral wool, but is inferior in characteristics and manufacturability. When exposed to water and humid air, it quickly loses its thermal insulation properties. It cakes over several years, leading to deterioration in performance. Installation of glass wool requires strict adherence to safety precautions - the smallest particles penetrate into the lungs when breathing and enter the eyes, causing irritation of the mucous membranes.

Ecowool

The material is obtained from waste paper and cardboard during recycling of waste paper, as well as waste from the textile industry. Additives prevent rotting, caking, and flammability of ecowool; insects and rodents find the material unattractive for eating and making nests.


Ecowool application process

You won’t be able to lay ecowool yourself – the material is sprayed and mixed with water using special installations.

Isoplaate

Sawdust fiber boards coniferous trees made without the use of chemical components.

Isoplast sheets

The surface of the pressed sheets is treated with paraffin, which reduces the susceptibility to rotting. The vapor permeability of the material is approximately equal to the characteristics of wood, which eliminates the accumulation of condensation between the wall and the insulation. Suitable for outdoor and internal method installation

Foil insulation

The material is a foam backing with a glued layer aluminum foil. It is sold under the names Penofol, Izolon, Izodom, etc.

The material performs several functions:

  • thermal insulation;
  • sound insulation;
  • waterproofing;
  • wind protection

Foil insulation

The product is resistant to chemical, thermal, biological effects and decay. Installation consists of fixing it to wooden surface stapler or using nailed slats. When using foil materials, the insulation is nailed down with a stapler, then the craftsman has to decide what to cover the wall with - plasterboard, molding, plastic siding.

Insulation process

Thermal insulation in timber house will be of high quality if you follow simple rules and sequence of manipulations. Deviation from the algorithm and incorrect alternation of layers will make the results of the work meaningless.

There are two methods: framed and frameless. They are applicable for external and internal use.

Frameless method

Without preliminary manufacturing of the frame, it can be insulated with polystyrene foam and extruded polystyrene, basalt mineral wool, Izolat - that is, materials with structural rigidity. The foil material also does not imply the construction of a frame, although it can be used as one of the layers of the “pie”.

Before installing insulation, the walls are thoroughly cleaned of dust and dirt. The irregularities are cut off or sanded - the insulation should fit snugly to the base.

The easiest and fastest way to insulate a house is to use Izolat slabs. They are simply nailed with wide-headed nails or screwed with self-tapping screws. Tools you will need are a hacksaw for cutting sheets to size, a hammer or a screwdriver. The surface of the slab is plastered or finished with siding. Absence finishing will lead to the destruction of sheets under the influence of climatic factors.

Polystyrene sheets are attached to wooden base self-tapping screws using wide plastic washers. Under the influence of ultraviolet radiation, polystyrene foam quickly loses its mechanical properties, so when external insulation is applied, plastering work will need to be carried out within 20-30 days.

At the first stage, cement-based adhesives are used. Use special assembly adhesive for polystyrene foam or ceramic tile adhesive.

The surface of the foam is covered with a thin 1-1.5 mm layer of glue, a fiberglass mesh is applied and embedded in the applied solution. Repeat application and leveling adhesive composition. After drying, the base is treated with a primer and plastered using any compositions compatible with cement. For example, bark beetle plaster. The surface can be painted with facade paints.


Insulation of the house basalt slabs

Insulation with basalt slabs is carried out in the same way.

Frame option

Frame method installation of insulation can be used for any materials, but it is mainly used for installing mineral wool. If polystyrene foam is used, the grid can be used to attach finishing trim, such as siding, to it.


Frame insulation method

Installation sequence:

  • surface cleaning;
  • treatment of wooden walls with a bioprotective primer (antiseptic) and fire retardants (fire retardant impregnation);
  • frame installation;
  • installation of insulation between the sheathing;
  • installation windproof membrane or slabs;
  • finishing installation.

An opinion is often expressed about the need to install a vapor barrier film between the wall beams and the insulation. Such a membrane can fulfill its purpose if the insulation is. For materials that are not vapor-permeable, such a layer is useless - moisture will accumulate at the wood-insulation interface, accelerating the rotting process.

For rolled materials, the sequence may be different:

  • surface preparation, chemical treatment;
  • securing brackets to the surface of the wall, onto which the sheathing will later be attached;
  • securing the rolled material using disc-shaped dowels.
  • Cutting in mineral wool holes through which the brackets protrude outward;
  • Installation of a hydro-windproof membrane;
  • Fastening finishing coating to the frame.

Choosing the right one thermal insulation material and by following the above rules, you can qualitatively insulate a wooden house made of timber or boards. Comfort on winter evenings and lower energy bills will be a reward for your work.