Hello, we bring to your attention the Finnish technology of wooden housing construction "double timber". All production is located in Orel and we are manufacturers.

The wood used goes through several stages of processing: First, the forest is sawn on a high-precision sawmill, which provides it with an ideal geometry. Then the entire bar with a moisture content of 40-60% is placed in a modern drying chamber, where it dries to a moisture content of 10-15%! Such material will last at least 50 years longer, will not shrink (which is very important), will retain the original appearance and will not crack over time. next step processing is the creation of a house kit according to the project, at this stage the dried timber is processed on German four-sided machines (a profile is cut, polishing is performed). Such a house kit according to the project can be easily assembled by 2 people.

The thickness of the wall can be from 190 mm to 340 mm, of which a minibar with a thickness of 45 to 70 mm on the outer and inner sides, and between them an ecowool insulation from 100 to 200 mm.

The minimum house set consists of external walls and internal partitions, its cost is calculated strictly in proportion to the number of cubic meters. wood.

Turnkey wooden house cheap

The preference of a huge number of developers is oriented, first of all, to wooden house was warm and reliable. To achieve these goals, there is a profitable and efficient technology construction wooden houses"Double bar". The time-honored Finnish way of building is firmly established in the construction market, this technology has a lot of advantages.

The double beam is a unique two-piece system that uses lumber that has gone through many stages of drying and grading. Wall elements are divided into outer and inner sides, between which there is a space for filling with ecowool insulation. The special structure of the lock connectors allows you to create tightness in the joints without the use of metal fasteners or adhesives, which is very important in the construction of environmentally friendly and durable housing.

The beginning of all work is the preparation of timber for future construction. Lumber undergoes chamber drying to prevent cracks during operation. After preparation, the material goes into production. With the help of modern four-sided machines, all structural elements are created that fit together as accurately and without gaps as possible.

When designing each house, the time for its construction is determined. In some cases, it is necessary to carry out work in winter time. Thanks to the double beam technology, this problem can be easily solved, since during construction this technology does not use cement mixtures or other processes that are not resistant to sub-zero temperatures. Regardless of what time of the year construction is carried out, a double-beam structure will not shrink due to calibrated, dry lumber.

The undeniable advantage is the cost-effectiveness of the entire structure. When compared with other construction methods, the savings will start from the foundation. The light construction of the house will allow the use of a screw foundation, which will significantly affect costs. Despite the low weight of the house, its structure will have high rigidity due to the double locking of the longitudinal profiles.

The right wooden house should have excellent heat-saving properties. The wall built using Finnish technology will have triple protection. This protection consists of an outer beam, a middle with a heat insulator and inner beam. Boards tightly adjacent to each other provide effective wind protection and, in combination, keep warm in winter and cool in summer. The triple insulation system will prevent condensation, and thanks to the unique properties of wood, the humidity inside will be moderate. Dry wooden walls will create their own microclimate, filling the entire room with the aroma of wood.

One of the main advantages of the Double timber technology is economy. Let's take a closer look. So you are done right choice, deciding to move to live outside the city. The first thing you feel

Saving your money (by choosing the construction technology Double beam) is the installation of the foundation. The design of the house is quite light, which protects you from unnecessary costs for the construction of expensive powerful foundations.

1) You order the whole range of works from the Novproekt company. In itself, the construction of double beam technology is very inexpensive. Accordingly, you again save your savings.

2) The most inexpensive option for building your own country house- Buy a ready-made kit at home for self-assembly. This is where our products have no equal! Neither cost nor ease of assembly!

And it really is! Two men can easily assemble a house with an area of ​​100 m2 without any skills in house building. But this is about the box of the house itself, but for roofing work (sheathing with metal tiles or something else) you will have to invite specialists, i.e. Us, here we need, as they say, a full hand. Thus, your savings in the construction of your home will be a decent amount!

Speaking again about the cost savings due to the technology of double timber, it is worth noting that a house built from timber does not require multiple finishing works, fuss with dry mixes, decorative plasters. Facade finishing will cost only the usual painting varnish. A beautiful and aesthetic appearance will not require constant repair of cracks or frequent renewal of facade painting. Natural environmentally friendly material will be able to withstand a variety of weather conditions. The interior also does not require any additional finishing. Smooth wooden walls already have a finished decorative look.

An inexpensive house made of timber will always create a pleasant atmosphere of coziness and comfort. The modern technology of turnkey double beams deserves the title of the optimal solution for construction. The issue of cost-effective construction of a house, thanks to such a system, can now be easily solved. Construction wooden house will take a short amount of time, and after completion finishes you can immediately live in the house without the need to wait for the shrinkage of the structure.

STAGES OF CONSTRUCTION OF A HOUSE FROM A DOUBLE BEAM:

Draft design At this stage, we must decide on the choice of architecture, plans, facades of your future home. To do this, you simply voice your wishes to us or send us a picture of the project that you would like to build. You can also choose one of our standard projects from the catalog of houses.

Working draft At this stage, our designers draw a scheme for cutting products for production. A working draft is done free of charge if a construction contract is concluded. If you are not ready to build yet, the working draft will cost you 200 rubles per sq.m. the total area of ​​the house along the axes.

Making a house kit is the most important and time-consuming process. As a rule, the manufacture of products for the construction of a house with an area of ​​130 - 150 m² takes an average of 1 month. Depending on the complexity of the architecture of the future home.

Installation on the site is carried out after the manufacture of the "designer" for assembly. It is important to note that the installation of a double-beam house is carried out without a single nail or the use of adhesives that are harmful to health. Durability of a design is reached thanks to strong castle connections.

Wood, as a material for construction, is, first of all, environmentally friendly. This material can be considered almost ideal in terms of easy processing and affordability. A huge number of different variations in design has created a new understanding in the construction of timber houses. Many designers and architects prefer the “double beam” technology for building houses. A warm and comfortable house will serve you and future generations for many years.

All more of experienced builders in Western European countries believes that only a double timber with ecowool can ensure the durability of a built house with maximum comfort of living in it. On the other hand, advertising in the media suggests that it is possible to build an inexpensive, but very high-quality and durable house exclusively from lumber. natural humidity.

What to choose from the many offers on the market? A bar of natural moisture is really excellent construction material, but only on condition that the degree of its humidity meets the required standards. If this is not the case, then you will have to put up with blue walls, cracked wood, drafts and other unacceptable things.

Benefits of Finnish technology

The double beam technology was developed in Finland about 20 years ago. The inventors of this technique set themselves the goal of creating a building material that would be superior in efficiency to existing lumber and at the same time be completely devoid of their inherent shortcomings.

Double timber projects have shown benefits such as:

• low degree of thermal conductivity;
• small thickness of the erected walls;
• monolithic wall construction in assembled form;
• during the first year of operation of the house, shrinkage of the walls is not more than 3 cm;
• short construction time;
• high level of environmental safety in comparison with other lumber;
• all-weather possibility of construction;
• low price, both the building material itself and construction with its use.

Design features

The development is based on a design similar to sandwich panels. That is, the sidewalls of the timber are made of wood and mirror each other. Thermal insulation is located between the sidewalls. The thickness of the wooden sidewalls is on average 70 mm, although this figure may vary according to the climatic conditions characteristic of the region..

Currently, various heaters are used, including bulk materials, mats and slabs. The main requirement for the thermal insulation used is its natural origin and, as a result, environmental safety. One way or another, the heaters used are characterized by a degree of thermal conductivity that is lower than that demonstrated by wood.

The timber under consideration is a universal building material that can be used in the construction of buildings for various purposes. After all, at the construction stage, between the insulation and the wall, you can lay required amount layers of mineral wool boards and vapor barrier.

As a result, the construction of a double beam can be adapted to a particular climatic zone. After all, the thickness of the mineral wool and the width of the wall material can be changed in accordance with the needs of the customer.

For example, using Finnish technology, it is possible to build walls up to 10 meters high and up to 340 mm thick. Such parameters are suitable for a variety of objects, from premium-class residential buildings to baths.

The indicated wall thickness is not the limit, but it does not make sense to make the walls thicker, since it will be warm in the house in winter and cool in summer.

Finnish technology guarantees special advantages in the construction of saunas and baths. According to statistics, baths made of double timber are more durable than similar buildings made of solid wood. And for sure, in such a bath it will be warm, regardless of external weather conditions.

This building material is characterized by a curious feature. Assuming that one double-beam bath, on one side of the walls, becomes blue or rotted, be sure that this defect will not be reflected on the opposite side of the beams.

Manufacturing

The production of a double beam is carried out on special, fully or partially, automated equipment - a cup-cutting line.

The production process includes the following steps:

• workpiece supply;
• drilling;
• cup cutting;
• grooving for casing;
• cutting;
• removal of cut cuttings;
• applying code;
• package.

Using double-beam production equipment, we obtain a wood-based building material with a moisture content of no more than 14% and absolutely precise milling lines.

Construction technology

Construction from a double beam is characterized by:

• low labor costs;
• efficiency of implementation;
• no need for special equipment;
• a small number of builders.

The instructions for building a house from this largely unique material are simple and effective. The fact is that structurally, a double beam is similar to a glued or profiled counterpart, but much lighter in weight. Therefore, building becomes more convenient and easier.

Building a house from a double beam is step by step process, during which the foundation is prepared with their own hands, waterproofing is laid, and then the walls are raised.

Important: in no case should the construction of walls be carried out during precipitation.
If the structure is assembled by a quarter or up to half and it started to rain, cover the structure with plastic wrap.
When assembled, the wall is highly hydrophobic, but a separate beam will absorb moisture into the layer.
Therefore, storage of building materials in open areas is allowed in packaging and under a specially equipped canopy.

Foundation

Considering that the weight of the construction object is somewhat less than the mass of a solid wood house, the foundation is used shallow. The optimal solution will become strip foundation laid around the perimeter of the entire house to a depth of 60-80 cm.

Such a foundation will not only withstand the weight of the structure, but will also save expensive building materials. Before assembling the walls, the tape base is covered with a layer of waterproofing. These can be specialized permeable breathable coatings or bituminous mastic.

Laying timber

Double timber walls are assembled in much the same way as with other profiled lumber. Laths are laid directly on the foundation, the surface of which is in the same horizontal plane.

The first row of dry thick profiled boards is laid on the slats, which, during assembly, form a strong connection with a cruciform shape.

After the first row has taken its place, the gap between the foundation and the boards on both sides is blown out mounting foam. As the foam dries, ecowool (biologically stable and fireproof filler made from recycled waste paper) is placed in the empty space between the boards.

The connection of the boards during the installation of the hollow system is carried out by means of a spike, which enters the grooves and provides the required strength. As a result, not the slightest gaps are formed between the individual beams.

Most important point is . In order to ensure its density and reliability, building materials arrive at the site with pre-prepared profiling.

The strength of the connection is practically unparalleled. After all, the difference between the connecting elements of two adjacent bars is no more than 1 mm. As a result, the installation is carried out with an effort, literally in an interference fit, which other construction lumber cannot boast of.

As the walls are assembled, insulating material is gradually added. To ensure long-term operation of the assembled walls, the inner side of the beam is necessarily covered with a membrane (vapor barrier film).

Important: a house with walls built using this technology is characterized by increased energy efficiency.
High thermal properties can significantly reduce the costs associated with heating in winter and air conditioning in summer.
The degree of thermal conductivity of walls with a thickness of 200 mm, with mineral wool as a heater, complies with the norms of SNiP II-3-79 "Heat engineering in the construction of individual residential facilities."
The thermal conductivity of such structures is similar to the parameters of walls with a thickness of 1.5 meters from solid bricks!

External processing

After the new wooden is assembled, it must be protected from the outside from the negative effects of environmental factors. To do this, you should apply tinting and varnishing, or simply paint the surface of the wall with enamel. Regardless of the method of surface treatment of the timber, the result will be neat and aesthetically pleasing.

Conclusion

So, let's try to sum up and decide how justified the construction of houses using this technology:

• By choosing this type of extension, you get a warm, cozy home, which allows you to reduce the costs associated with heating.
• A wooden house built according to Finnish technology can be put into operation in a short time due to minimal shrinkage (no more than 1.5%). Thanks to this, you will be able to move in as soon as the house is assembled.
• Such buildings are quickly assembled, without the need for the use of special lifting equipment.
• There is no need for a massive expensive foundation, since the entire building is lightweight (no more than half a ton per cubic meter of wall material).
• Possibility to fit everything engineering Communication inside the wall.

Note!
Use a double beam and the dew point and mold will not bother you.
After all, the design is treated with antiseptics, and besides, it is well ventilated.
Again, there is no need for finishing works(enough toning or painting with enamel).

In the presented video in this article you will find additional information on this topic. This will help you decide on the right choice of building material.

What is a double-timber house, what wood is used, construction stages, advantages and disadvantages, construction price range, vapor barrier and insulation.

At present, a house made of double timber has become more and more actively introduced as a year-round living space, if 10-20 years ago houses of this type were looked at as a curiosity, then at the moment it is no longer a luxury, but a standard building for living with an attractive appearance.

This article describes in detail what are the pros and cons inherent in a double beam, what are its positive sides and disadvantages, price analysis of double timber. What is the essence of the construction of a double beam, what is the construction technology of a double beam, the nuances of the construction of a double beam, which means the swallow's nest method when erecting.

How is the production of a double beam, experience of application in the domestic market, how durable is the structure, how to perform a reliable installation of a vapor barrier. What is better ecowool or mineral wool as a heater, as well as sawdust or bulk cellulose, what are the stages of construction using double timber technology.

How is a reliable foundation created, is finishing necessary, is additional vapor barrier needed, what type of wood is used to create wooden houses from a double beam.

Positive sides

• Natural wood is environmentally friendly.
• Elements for internal and external walls are manufactured at the factory from a dry sanded board with a thickness of 45 mm, and are 100% ready for assembly. After drying, the boards reach a moisture content of no more than 12%, which contributes to minimal shrinkage of the house. Therefore, you do not need to wait six months to move in and celebrate housewarming.
• Each tongue-and-groove bar is equipped with a double comb lock, which creates a tight, reliable, windproof connection. Therefore, sealing of seams is not required, as in log buildings.

With a small wall thickness of 220 mm, where the wood is 90 mm and the insulation is 130 mm, high energy saving rates are provided.

The total weight of the building is relatively small, which makes it possible not to lay a capital foundation. On loose and unstable soils on the site, screw piles are the ideal foundation. But, if the nature of the soil allows, then one of the options may well be a non-buried strip foundation.

Using modern technology in wooden housing construction, it became possible to speed up the construction time as much as possible.

Simple assembly of wooden elements is carried out without the use of special equipment. The work is carried out by several workers, which greatly saves construction costs.

Expert opinion

Filimonov Evgeny

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Important! You can build houses from a double beam at any time of the year, the only requirement is the absence of rain or snow.

Disadvantages of a double beam

The main disadvantage of the technology is the uneven shrinkage of the wooden structure, which occurs as a result of a large temperature difference between the outside and inside the building. The difference should not be more than 2-3 mm.

It is difficult to achieve high build quality, so it is necessary to conclude an agreement with professionals, and not "shabashniki" who want to earn money on easy, at first glance, work.

Another important disadvantage is the selection of insulation, which is used to fill the voids between the outer and inner rows. Due to the wide range of insulation materials available on the construction market, it is difficult to make the right choice and give preference to any one option. Only experts know what characteristics and properties each type of insulation has.

Despite the fact that the listed disadvantages of a double beam are much less than the advantages, the main indicator is performance characteristics building. Disadvantages of such technology may appear for several years. The most unfavorable moment is the climatic conditions, therefore, before deciding to build, you should consult with specialists and find out in advance what disadvantages the Finnish construction technology has in a particular region of Russia.

Expert opinion

Filimonov Evgeny

Professional builder. 20 years of experience

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Important! To avoid unpleasant moments associated with the shrinkage of the building, you should carefully select applicants for the performance of work and order building material from a trusted manufacturer that guarantees high-quality drying of the timber.

Positive sides

• Nice and neat appearance.
• There are excellent thermal insulation characteristics and high energy efficiency of the entire structure.
• Tight connection and the absence of gaps between the seams creates a reliable sealing of the walls and protection against wind penetration.
• The walls of the house "breathe", so there is a favorable microclimate in the premises.
• The presence of space between the outer and inner rows of timber walls allows you to hide all engineering and communication networks (water pipes, sewers, ventilation ducts).
• Cost-effective housing due to inexpensive materials, no need for interior wall decoration and additional insulation. Fast payback due to low costs for hiring workers, heating, building maintenance.

Expert opinion

Filimonov Evgeny

Professional builder. 20 years of experience

Ask an expert

Important! Buildings made of double timber are much cheaper than houses of the same size, but only from glued timber 150x150 and without heat-insulating materials.

Disadvantages of houses from a double beam

• The main concern lies in the climatic conditions. Therefore, you need to know how the climate of the region can adversely affect a double-timber house. What are the disadvantages of frequent freeze-thaw cycles. Sudden changes in temperature can lead to uneven shrinkage, resulting in cracks in the wood. The use of high quality material reduces this risk.
• The second significant disadvantage is the wrong choice of insulation. Ecowool is best suited, which is placed between the outer and inner walls without tamping, while its blowing is carried out in several stages. Only in this way, the natural density of the insulation is achieved. The main requirement for the implementation of such a procedure is the correct calculation of the amount of ecowool at positive temperatures. Insufficient filling of the gaps will lead to a lack of the necessary parameters and a decrease in the energy efficiency of the building, and an excess will lead to deformation of the walls at low temperatures.
• In houses made of double timber, the disadvantage is the difficult implementation repair work. But the manufacturer guarantees that with timely and high-quality processing of wood with special antibacterial agents, such a procedure will not be required soon.

Expert opinion

Filimonov Evgeny

Professional builder. 20 years of experience

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Important! You can not save on insulation, as this can lead to low thermal insulation performance, as a result of which condensation, mold, fungus will appear - followed by damage to the entire building.

How can disadvantages and advantages affect the choice of a house from a double beam?
Considering all the positive and negative sides, it will be possible to decide on your own whether to build a house from a double beam or not.

The pros and cons of such a construction were divided almost equally. If the number of the former is much greater, then the disadvantages prevail in importance. Therefore, before deciding to build a house from a double beam, all the pros and cons must be carefully studied and written out in a column. Possible nuances should be discussed with specialists. You need to seek help only from professionals with sufficient experience.

Pros and cons of double beam technology

Therefore, builders have to apply various techniques to reduce the deformation of the walls and their reliable insulation.

Rigid energy saving standards today “do not let through” even a 20-centimeter beam.

Such a thickness of wood is not enough for the construction of warm houses in the central Ural region, not to mention the northern regions of Russia. That's why wooden frame need to be insulated from the inside.

An economical and effective solution to this problem is provided by the double beam technology, which was first tested by builders in Finland. Even in this forest country, it is not easy to find a deck thick enough to protect the house from -40 degrees below zero.

Finnish engineers calculated everything possible options saving energy and came to the conclusion that it is quite possible to build eco-friendly and warm housing from wood. Only for this you need to use not a massive beam, but two thick boards, between which there is a layer of insulation.

Thus, a new technology arose, which in our area received a not entirely correct name. Despite the fact that the words “double” and “beam” sound solid and impeccable from the point of view of advertising, from a technical point of view, this technology should be called a wooden “sandwich wall”.

Considering the design of a wall built from a “double beam”, we see here elements inherent in both a log house (special joining of boards at the corners) and a classic frame (double cladding).

The role of the beam here is performed by a planed board with a thickness of 44 to 70 mm and a height of 140 mm, placed on the edge. Its landing edges are profiled according to the “groove-comb” system, which makes it possible to achieve tight contact and protect the seam from blowing.

The spatial rigidity of the structure is achieved due to the corners connected by the “cutting” method, when a groove is cut in the joined boards for half their height.
The main advantage of this technology is high energy saving.

The thickness of such a wall does not depend on cross section logs or timber, so the insulation layer can be chosen in strict accordance with the requirements of thermal engineering standards.

Another plus that gives us the construction of houses from a double beam is the minimum shrinkage of the walls (no more than 1-2%).

It is possible to operate a turnkey building built according to Finnish technology immediately after the completion of the assembly of the walls and the installation of the roof. It is not necessary to wait six months until the wood dries and the crowns of the log house find their place.

The installation of double plank walls is quite simple, not too laborious and does not require the involvement of powerful lifting mechanisms. This has a positive effect on the construction time and its cost. Simultaneously with the assembly of double wooden walls thermal insulation is being laid in the space between the boards. Therefore, a house made of double timber does not require additional insulation and finishing.

When erecting a building from wood that is not impregnated with harmful synthetic resins, the most correct solution would be to use a heater that is safe for health.

Polyurethane foam for insulating walls made of double timber is a rather expensive material. Styrofoam crumb releases toxic fumes and is completely destroyed over time. Mineral wool requires the installation of a vapor barrier (ecowool does not need it) and eventually caking, forming empty cold cavities.

To insulate box-shaped walls, you can use flax fiber or chopped straw - materials that do not cake and are optimally combined with wood.

The disadvantages of this technology usually include shrinkage of the insulation. However, this problem, as we indicated above, occurs only when laying mineral wool.
Theoretically, there is a risk of cracks appearing in the wall due to uneven shrinkage of the outer and inner lining. However, in practice, there were no such comments from the owners of houses built using the double-beam technology.

There are no long-term instrumental observations of the behavior of double wooden walls in Russia yet. Therefore, the customer can only trust the experience of the Finns, who have been successfully building and operating such buildings in the harsh northern climate for more than 20 years.

You won’t be able to build a house from a double beam on your own, because for the high-quality construction of walls, machining of boards, cutting spikes and grooves, as well as docking recesses of corner joints is necessary. Therefore, it will not be possible to save personal funds by abandoning a team of specialists and buying a house kit.

Price analysis

In the first approximation, double-beam houses are more expensive than solid wood log cabins. average cost square meter double insulated wall - 5,500 rubles. The price of 1 m2 of a wall made of a solid beam with a thickness of 150 mm is about 3,500 rubles. At the same time, we must not forget that the timber, even with a thickness of 20 cm, needs to be insulated.

Double insulated wall technology gives us a ready load-bearing structure that does not require additional work. Therefore, for comparison, we will make a simplified estimate for a wall built from profiled timber.

So, the cost of a “bare” lumber wall 15 cm thick is about 3,500 rubles per 1 m2. The price of insulation (20 cm of ecowool) with installation is 800 rubles / m2, the cost of materials and work on the installation of the frame and lining with clapboard is another 600 rubles / m2.

Additional measures for warming a log house from a bar will cost us 1,400 rubles per 1m2. As a result, we will get 3500 + 1400 = 4,900 rubles for one "square" of the wall.
Comparing this amount with the price of a warm wall made of double timber, we see that the difference is not so significant. If we take into account the serious advantages of this technology, then a double beam can be called a profitable alternative to traditional wooden log cabins.

Double beam construction

The construction of baths from a bar is considered the best option due to the environmental friendliness of the material of the walls, their low thermal conductivity, and the high speed of construction. Baths built from ordinary profiled and double timber look identical in appearance, but there are a number of differences in both technical specifications, and by the method of erecting walls.

The design of the double beam was developed not in Russia, but in Austria. Then the technology began to be used in Germany, and only then the design received particular success in Finland. In Russia, the technology of double timber began to be used relatively recently.

Wall material - glued laminated timber or technically dried wood with a moisture content of less than 14%. The production of timber is carried out on longitudinal-milling quadrilateral machines. The connection of the beam is a double profiled airtight, windproof lock. Between two beams (external and internal) the distance is 130-150 mm. In this gap, ecowool insulation is laid with the addition of antiseptics, flame retardants, boric acid, drills necessary to ensure the fire safety of the building. Insulation density up to 70 kg/m3.

Expert opinion

Filimonov Evgeny

Professional builder. 20 years of experience

Ask an expert

Important! According to GOST 18288-87, timber is called lumber with a height and thickness of more than 100 mm. In this case, the structural elements have a smaller thickness and are more likely to be profiled boards, but the builders still call the technology “double timber” or “double sheet pile”. Sometimes the profiled elements of the walls are called "minibar".

And one moment. Double beam technology and frame construction are completely different things. The frame bath has a "skeleton" formed by vertical posts and jibs. Between the racks, mineral wool is usually laid, on both sides the walls are sewn up with vapor barrier, and then OSB or boards. When building from a double beam, there is no "skeleton". All perimeter walls are load-bearing.

This technology is akin to building from a full-fledged profiled timber, rather than to frame construction. The rigidity of the walls is provided by double corner joints. In addition, ecowool has no joints and gaps, the insulation is of better quality than plate or roll materials. In the Russian Federation, houses and baths using double-beam technology began to be built 40-50 years ago, and the reviews of the owners of such buildings are more than positive.

Features of double beam technology

Thermal efficiency.

A wall made of a double beam with a thickness of 220 mm (130 mm of which is insulation) is comparable in terms of thermal efficiency to wooden wall 700 mm thick or with brick wall 1.2 meters thick. The vapor permeability of walls from a double beam is preserved, freezing is excluded.

Energy efficiency.

A minimum amount of energy is required to warm up a house or a bath from a double beam. On a note! According to SNiP II-3-79, the heat-shielding qualities of a double beam are 2.5 times higher than that of a glued beam. Environmental friendliness. The ecowool used for insulation consists of 82% cellulose and 18% of antiseptics and flame retardants. These substances do not emit toxic substances into the atmosphere, they are completely safe for humans. A tree is environmentally friendly a priori. Glue is not used during construction. The bath will have the aroma of natural wood and a favorable microclimate.

No problems of traditional wooden log cabins.

The shrinkage of a log cabin can be up to 10%, and if undried wood was originally used for construction, then the percentage of shrinkage can reach up to 17%. Shrinkage continues for several years (at least a year and a half) after the erection of walls, which makes finishing processes impossible, expansion joints are required, etc. In the process of shrinkage, the wood cracks, cracks form, caulking is required. Lock connections in the process of shrinkage lose their tightness. Walls made of double kiln-dried timber have a shrinkage of no more than 2%. The risk of crack formation is minimized. Corner joints with a double cut and additional insulation of mines with ecowool are not a freezing zone. The ecowool itself inside the walls is not prone to shrinkage or creasing. Caulking of walls and additional thermal insulation is not required. There are no gaps between the crowns due to the high height of the tenon and the deep grooves of the wall elements. Insect pests, mice, rats do not settle in ecowool.

High construction speed.

The wall kit is completely prepared at the factory according to the customer's project within one month. The finished kit is delivered to the facility ready for assembly, marked for convenience. On a note! In the design process, not only the size of the building, the location of the premises is selected, but also calculations are made of wind, snow, seismic loads. The project can also include integrated floor beams and integrated scaffolding, which are bars protruding beyond the walls, on which boards are laid to move builders along them. Integrated scaffolding is cut down after painting the facade. This achieves additional savings and increases the speed of construction. And the bearing capacity of the integrated floor beams is higher than that of the classic floor logs.

Estimated construction time big house with an area of ​​up to 130 m2 is 3 months, of which about three weeks are spent on assembling the walls, the rest of the time is taken up by the construction of the roof and ceilings, the installation of doors, windows, laying communications and other work. Respectively, small bath can be built in much more short time. On a note! All elements are produced exclusively by the factory, and not in artisanal conditions. During production and shipment, constant monitoring of the quality of the material, its dimensions, and humidity is carried out. During construction, there is no need to use heavy lifting equipment. Work can be carried out in any season of the year.

Hidden communications.

In houses made of double timber, there are special cavities (boxes or cuts) in which wiring, pipes, etc. are laid. The house or bath, both from the inside and outside, looks aesthetically pleasing and neat. Wiring and pipes are hidden, but repairable at any time.

Durability.

The estimated service life of a double-beam building is up to 110-115 years.

Affordable price.

The cost of building a double beam is about 30% lower than a bathhouse made of profiled, glued beams or logs.

Possibility of construction on a lightweight foundation.

Screw piles are usually chosen as the foundation, less often - a strip foundation. A screw foundation with a grillage can be used. This moment depends on the condition of the soil on the site, the proximity of groundwater.

The nuances of building from a double beam

• It is permissible to make a strapping platform from a bar of natural moisture.
• The joists must not be located below the strapping platform.
• The floor insulation should not be based only on the vapor barrier, there should be a solid solid base.
• It is better not to fix floor logs, terraces with corners, from loads it can rip off the heads of self-tapping screws.
• Lamellar beams are best not to use. This design is prone to warping and cracking.
• It is important to observe the technology for installing door and window flashings.
• It is important to connect the crowns tightly, without gaps. If there are gaps between the crowns, the alignment will be lost.
• The first crown must be attached to the strapping beam or board.
• If there are elements with defects in the wall kit delivered to the site, it is better to turn the timber with the unsightly side inside the cavity where the ecowool is pumped.
• From a double beam it is not recommended to build large-sized high-rise buildings. This technology is relevant for low-rise construction.

When designing, it is necessary to provide for overcuts in the walls, and between adjacent boxes there should not be more than three and a half meters. This is necessary to prevent warping of the walls under the action of a dense layer of ecowool, which exerts pressure on the outer and inner walls of the building.

There may be a variant of a wall 6 meters long without cuts, in this case, a solid beam is vertically installed in the middle between the inner and outer walls. This bar will be invisible. The event will allow maintaining the rigidity of the walls and eliminating deformation under the pressure of the insulation.

During the construction of walls, gaps may remain between the elements. It is impossible to continue construction until all cracks are eliminated. For this, the method of contracting walls can be used.

Double bar dovetail

Above, we examined the principle of building a building using the classic double-beam technology. The elements were assembled without insulation, any gaskets, dowels and nails. Technology "double bar" dovetail"has differences, is considered even more reliable and allows you to build buildings with high number of storeys and a large area.

We have already mentioned that the house kit is cut in production strictly in size. In the corner elements there are through holes for vertical studs. Inside the walls, the studs are connected and built up. After the walls are erected from below and from above, a nut with a washer is screwed onto the studs, tightening the crowns. That is, the studs are used as pins.

A dovetail groove has been added, into which a special fastener is inserted. The connector is hammered into the groove with a mallet, placing the part with the rounded side down. It is no longer possible to pull the connector out of the beam.

The dovetail connection is made not only on outside corners walls, but also on all partitions. What does it give? Even with a strong change in the linear dimensions of wood due to fluctuations in temperature and humidity, during shrinkage, the outer and inner perimeters may slightly shift vertically, but the overall geometry of the house will remain unchanged, the geometry of all corners will be preserved.

What is the essence of the new technology?

Even a novice builder knows that log houses have two main drawbacks - thin walls and shrinkage of crowns. The latter occurs in connection with the shrinkage of wood. Therefore, methods are used that prevent deformation of the walls and contribute to their effective insulation. According to existing standards, the walls of the house should be no thinner than 20 cm.

This problem can be solved by the technology of a double beam, which was first used by builders in Finland. There are few trees thick enough in the country that could be used to build houses, while protecting them from the severe frosts that are typical for the region.

Finnish engineers have managed to develop a technology that allows building warm wooden houses at relatively low financial costs. She received the name "double beam". In fact, this technology has little in common with a bar in the usual sense. Its essence lies in the fact that in order to achieve the proper thickness of the walls, two tongue-and-groove boards are used, between which there is a layer of insulation. -

Houses using double timber technology are distinguished by improved thermal insulation characteristics, compared with houses made of solid timber of a similar section. Compared to insulated glued beams, this technology does not use adhesives. Insulation is often ecowool or mineral wool.

Double beam: production

The production of material for the construction of houses using the technology of a double beam differs from the manufacture of a conventional profiled beam. It is carried out on special equipment - a fully or partially automated cup-cutting line.

It is carried out in several stages:

• workpiece manufacturing;
• drilling holes for fastening edged boards;
• cup cutting;
• grooving;
• cutting blanks;
• removal of residues;
• marking;
• material insulation; package.

Advantages

The main advantage of a house made of double timber is high energy saving. The thickness of its walls does not depend on the diameter of the log or beam. The insulation layer is selected in accordance with the requirements specified in generally accepted thermal engineering standards. The second advantage of the technology is the minimum wall shrinkage, which fluctuates in the range of 1-2%.

Expert opinion

Filimonov Evgeny

Professional builder. 20 years of experience

Ask an expert

It is possible to start full-fledged operation of a house built according to Finnish technology upon completion of the assembly of walls and roof.

Ordinary houses from a bar cannot be used immediately, since you need to wait until the tree dries and the crowns “fall” into place. In this case, there is no need to wait.

Installation of a house from a double beam is relatively simple, not laborious and does not require the use of complex construction equipment, which favorably affects the time of building a house and financial costs. In parallel with the assembly of the walls, thermal insulation work is carried out, filling the space between the boards. The walls in houses made of double timber should not be additionally insulated and finished.

Flaws

"Double beam", despite many advantages, has a number of disadvantages. The most significant include shrinkage of the insulation, but it occurs only when using mineral wool. There is also the possibility of cracks.

They can form due to uneven shrinkage of the outer and inner boards used for houses built using the “double beam” technology. Reviews of builders assure that in practice such problems do not arise at all. At least there were no comments.

Experience in the domestic market

In the domestic market, the technology has been used recently, so no one can guarantee that wooden houses will fully perform their functions in our climatic conditions. You just need to trust the Finnish experience in housing construction, since they have been building houses from double timber for over 20 years and successfully operate buildings in their more severe climatic conditions.

It is not possible to independently build a house using this technology, since for its high-quality construction boards processed on special machines are needed. It is also necessary to cut the spikes, grooves and docking grooves intended for corner joints. Without a team of specialists and the purchase of a house kit, it will not work out in any way. Therefore, saving on financial costs is problematic.

Structural strength

The technology of a double beam is not comparable with conventional frame construction, where the insulation is located between two thin walls. In this case, everything is held on the bars. There is also a subspecies of this technology - "double mini-beam". Its construction is similar, but the walls are thinner.

Floor beams also provide increased structural strength if they are cut into walls during the construction process. In technology, only dry lumber can be used, which largely affects the strength of the house as a whole. This is due to the fact that drying the timber leads to a loss of 13% of its moisture content, due to which molecular bonds are broken. In the future, the timber will give exactly the same amount of moisture that it will absorb. Therefore, deformation will not occur.

vapor barrier

For the construction of houses, the walls of which consist of several floors, vapor barrier is an important issue. Without its consideration, it is not recommended to carry out construction. Double timber is an exception, despite the fact that the walls of houses built using this technology will inevitably absorb moisture after a certain time. Therefore, there is an opinion that the insulation between the bars is the place of rot formation. At the same time, construction companies specializing in the construction of houses using this technology claim that a double beam has not previously caused any problems. The reviews of the owners agree that it is enough to use the film only in ceilings.

But there are exceptions. Some owners are concerned about the lack of vapor barrier as such, so during construction they use a windproof membrane, which is applied after the insulation. Experienced builders are skeptical of this, as it will not allow the walls to "breathe" freely, but they can last much longer.

Ecowool as wall insulation

When building a wooden house not impregnated with synthetic resins harmful to health, the best option will be the use of harmless insulation. The optimal material is ecowool, the main component of which is cellulose. It does not rot, does not shrink and is not subject to fire.

The calculations for the material are as follows:

• acoustic isolation - 46 dB;
• dew point - under standard conditions, condensate will not occur;
• insulation - 0.13 m2 for each m2 of wall;
• thermal conductivity coefficient - 0.2 W / m2.

Ecowool is blown dry into the space between the beams. Height should be no more than three meters. The procedure is carried out in stages. But here certain difficulties arise: ecowool is blown into the “double beam” in the same way as inside frame walls. If the wells of the latter are closed and it is not difficult to achieve the required density, then the material is more filled up and, as a result, may settle. Experienced builders have found a way out of this situation and use a special blowing machine. Recently, mineral wool has found great application.

Mineral wool as a heater

The material is reliable, environmentally friendly and relatively cheap. If mineral wool is used as a heater, then it is necessary to organize a vapor barrier of the room (this is not done for ecowool). In addition, over time, it caking and, as a result, empty cold cavities are formed in the walls. Therefore, the material will have to be covered with an antiseptic inside and out.

Sawdust

For wall insulation, it is recommended to use stale sawdust. If you only have fresh ones on hand, then you can soak them for a day in lime and only then knead them. The procedure is as follows: m2 sawdust and two bags of cement are poured into the mixer. Everything is moistened a little, mixed, poured into the space between the walls and rammed. A significant drawback of the material are mice, mold or dampness.

Bulk pulp

The material effectively performs the task of wall insulation. Often, during construction, insulation is not used at all, since it is believed that the air itself is an excellent insulation. But it is important to understand that it serves as thermal insulation only when it is motionless. This is the task of other materials: they create big number cavities with "fixed" air.

Sometimes polyurethane foam is used, but it is relatively expensive, so it has not found wide application in construction. In this case, the material releases toxic substances and after a certain time is destroyed.

Box-shaped walls are insulated with flax fiber. Chopped straw or other material that does not cake over time is also suitable. It is also important to remember its compatibility with wood.

The season in which timber is harvested for the production of Double Beam houses does not matter to our customers, because:

All wood selected for the production of a house set goes through the stage of chamber drying to a moisture content of 10 ± 2% in specialized drying chambers. It is noteworthy that, according to various studies, the moisture content of wood in the period November-February is the highest for the year, contrary to a common misconception, and the wood reaches the lowest moisture content in the period July-August.

All lumber of natural moisture is stored in ventilated stacks in an open area, which prevents the development of blue and fungus in the summer.

All materials that have passed the stage of chamber drying, including mini-timber and ready-made house kits, are stored in a closed dry warehouse, which guarantees the safety of wood from waterlogging when exposed to precipitation, from darkening when exposed to ultraviolet rays, as well as from all kinds of other damage.

* If, nevertheless, you want to build a house or a bathhouse from a Double Timber from a winter forest, then you must have time to conclude a construction contract no later than the end of April, this should be borne in mind!

The construction of baths from a bar is considered the best option due to the environmental friendliness of the material of the walls, their low thermal conductivity, and the high speed of construction. Baths built from ordinary profiled and double timber look identical, but there are a number of differences both in technical characteristics and in the method of building walls.

The design of the double beam was developed not in Russia, but in Austria. Then the technology began to be used in Germany, and only then the design received particular success in Finland. In Russia, the technology of double timber began to be used relatively recently.

Wall material - glued laminated timber or technically dried wood with a moisture content of less than 14%.

The production of timber is carried out on longitudinal-milling quadrilateral machines. The connection of the beam is a double profiled airtight, windproof lock.

Between two beams (external and internal) the distance is 130-150 mm. In this gap, ecowool insulation is laid with the addition of antiseptics, fire retardants, boric acid, borax, necessary to ensure the fire safety of the building. Insulation density up to 70 kg/m 3 .

Table. Bar sections

Important! According to GOST 18288-87, timber is called lumber with a height and thickness of more than 100 mm. In this case, the structural elements have a smaller thickness and are more likely to be profiled boards, but the builders still call the technology “double timber” or “double sheet pile”. Sometimes the profiled elements of the walls are called "minibar".

And one moment. Double beam technology and frame construction are completely different things. The frame bath has a "skeleton" formed by vertical posts and jibs. Between the racks, mineral wool is usually laid, on both sides the walls are sewn up with vapor barrier, and then OSB or boards. When building from a double beam, there is no "skeleton". All perimeter walls are load-bearing. This technology is akin to building from a full-fledged profiled timber, rather than to frame construction. The rigidity of the walls is provided by double corner joints. In addition, ecowool has no joints and gaps, the insulation is of better quality than plate or roll materials.

In the Russian Federation, houses and baths using double-beam technology began to be built 40-50 years ago, and the reviews of the owners of such buildings are more than positive.

Video - Owner's review of a double-beam house

Features of double beam technology

Thermal efficiency. A wall made of double timber with a thickness of 220 mm (of which 130 mm is insulation) is comparable in terms of thermal efficiency to a wooden wall 700 mm thick or a brick wall 1.2 meters thick. The vapor permeability of walls from a double beam is preserved, freezing is excluded.

Energy efficiency. A minimum amount of energy is required to warm up a house or a bath from a double beam.

On a note! According to SNiP II-3-79, the heat-shielding qualities of a double beam are 2.5 times higher than that of a glued beam.

Environmental friendliness. The ecowool used for insulation consists of 82% cellulose and 18% of antiseptics and flame retardants. These substances do not emit toxic substances into the atmosphere, they are completely safe for humans. A tree is environmentally friendly a priori. Glue is not used during construction. The bath will have the aroma of natural wood and a favorable microclimate.

No problems of traditional wooden log cabins. The shrinkage of a log cabin can be up to 10%, and if undried wood was originally used for construction, then the percentage of shrinkage can reach up to 17%. Shrinkage continues for several years (at least a year and a half) after the erection of walls, which makes finishing processes impossible, expansion joints are required, etc.

In the process of shrinkage, the wood cracks, cracks form, caulking is required. Lock connections in the process of shrinkage lose their tightness.

Walls made of double kiln-dried timber have a shrinkage of no more than 2%. The risk of crack formation is minimized. Corner joints with a double cut and additional insulation of mines with ecowool are not a freezing zone. The ecowool itself inside the walls is not prone to shrinkage or creasing. Caulking of walls and additional thermal insulation is not required. There are no gaps between the crowns due to the high height of the tenon and the deep grooves of the wall elements.

Insect pests, mice, rats do not settle in ecowool.

High construction speed. The wall kit is completely prepared at the factory according to the customer's project within one month. The finished kit is delivered to the facility ready for assembly, marked for convenience.

On a note! In the design process, not only the size of the building, the location of the premises is selected, but also calculations are made of wind, snow, seismic loads. Also in the project, integrated floor beams and integrated scaffolding can be laid, which are beams protruding beyond the walls, on which boards are laid for the builders to move along them. Integrated scaffolding is cut down after painting the facade. This achieves additional savings and increases the speed of construction. And the bearing capacity of the integrated floor beams is higher than that of the classic floor logs.

The approximate construction time for a large house with an area of ​​​​up to 130 m 2 is 3 months, of which about three weeks are spent on assembling the walls, the rest of the time is taken up by the construction of the roof and ceilings, the installation of doors, windows, laying communications and other work. Accordingly, a small bath can be built in a much shorter time.

On a note! All elements are produced exclusively by the factory, and not in artisanal conditions. During production and shipment, constant monitoring of the quality of the material, its dimensions, and humidity is carried out.

During construction, there is no need to use heavy lifting equipment. Work can be carried out in any season of the year.

Hidden communications. In houses made of double timber, there are special cavities (boxes or cuts) in which wiring, pipes, etc. are laid. The house or bath, both from the inside and outside, looks aesthetically pleasing and neat. Wiring and pipes are hidden, but repairable at any time.

Photo - the walls are smooth from the inside, do not need finishing

Durability. The estimated service life of a double-beam building is up to 110-115 years.

Affordable price. The cost of building a double beam is about 30% lower than a bathhouse made of profiled, glued beams or logs.

Possibility of construction on a lightweight foundation. Screw piles are usually chosen as the foundation, less often - a strip foundation. A screw foundation with a grillage can be used. This moment depends on the condition of the soil on the site, the proximity of groundwater.

Video - Lack of a dew point in a double-beam house

The nuances of building from a double beam

1. It is permissible to make a strapping platform from a bar of natural moisture.

   

   

2. The joists must not be located below the strapping platform.
3. The floor insulation should not be based only on the vapor barrier, there should be a solid solid base.

   

4. It is better not to fix floor logs, terraces with corners, from loads it can rip off the heads of self-tapping screws.

   

5. Lamellar beams are best not to use. This design is prone to warping and cracking.

   

6. It is important to observe the technology for installing door and window flashings.

   

   

7. It is important to connect the crowns tightly, without gaps. If there are gaps between the crowns, the alignment will be lost.

   

   

8. The first crown must be attached to the strapping beam or board.
9. If there are elements with defects in the wall kit delivered to the site, it is better to turn the timber with the unsightly side inside the cavity where the ecowool is pumped.

   

10. It is not recommended to build large-sized multi-storey buildings from a double beam. This technology is relevant for low-rise construction.
11. When designing, it is necessary to provide for overcuts in the walls, and between adjacent boxes there should not be more than three and a half meters. This is necessary to prevent warping of the walls under the action of a dense layer of ecowool, which exerts pressure on the outer and inner walls of the building.

    

12. There may be a variant of a wall 6 meters long without cuts, in this case, a solid beam is vertically installed in the middle between the inner and outer walls. This bar will be invisible. The event will allow maintaining the rigidity of the walls and eliminating deformation under the pressure of the insulation.
13. During the construction of walls, gaps may remain between the elements. It is impossible to continue construction until all cracks are eliminated. For this, the method of contracting walls can be used.

    

    

Prices for timber of natural moisture

bar of natural moisture

Construction of a bath using double beam technology: instructions

First of all, a foundation is laid under the bath. For a bath from a double bar best option- screw foundation. Under the bath with dimensions of 6x4 m, 9 screw piles are twisted. You can familiarize yourself with the intricacies of arranging bases of this type in detail.

The construction plan is as follows:

• strapping installation;
• assembly of massive walls. The house kit will be delivered to the site, all elements will be marked. Nails and dowels are not used in the process. You will need anchors, studs, self-tapping screws, mounting plates;
• arrangement of floors;
• roof construction;
• installation of window and door blocks;
• installation of communications;
• fine finishing, namely painting the outer walls and treating the inner walls with impregnations intended for baths and saunas (paint and varnish are not used in the steam room). Also to fine finish include work on the installation of imitation timber and corners for overcuts outside and inside the bath;
• sauna stove installation, chimney assembly, furniture arrangement.

Step 1. On the foundation, namely on the pile heads, it is necessary to lay a double layer of roofing material, fixing it with bituminous mastic.

Step 2 A strapping beam is laid on top of the waterproofing, which is preferably pre-treated with an antiseptic. If in the future a firewood shed, a porch, a terrace will be attached to the bathhouse, holes are left in the strapping beam for joining the bath strapping and the extension strapping. The dressing of the strapping is performed "half-tree".

Important! If the heads of the screw piles are not level, this can be compensated for by the support and strapping structure. The upper surface of the strapping beam must be located in a single plane and be strictly horizontal without errors.

Before rigid fixation of the strapping structure, it is necessary to measure all diagonals, check their equality.

Under internal partitions(in places where floor logs will rest on the beam) a single strapping beam with a section of 150 x 150 mm is installed. In places where there will be a large load ( bearing walls at home), install a double remotely fixed beam of the same section. Rigid fixation is performed with studs. Two beams are laid, between them a piece of moisture-resistant plywood is drilled through all the elements, after which they are pulled together with a hairpin.

It is important to check that the foundation and piping strictly comply with the project drawing.

Step 3 It is necessary to take the scheme of the first floor, look at the part numbers on it and select these elements from the kit brought to the site. Elements are installed in pairs. It is recommended to additionally fix the first crown by connecting it to the strapping with a perforated mounting bracket and self-tapping screws.

Another mounting option - the starting beam is fixed through with a long self-tapping screw, screwing the hardware into the groove of the beam. The starting beam in this case is the elements of the first crown, having a height 2 times less than the rest of the wall beams.

Usually, long elements are laid first, and short beams are installed perpendicularly on them with the second row, cuts are formed, in which communications will be located in the future. The ends of the beams are profiled, the upper and lower adjacent rows are connected according to the "thorn-groove" system. When laying each element, you should beat it with a mallet through the bar so that the connection is as tight as possible.

During the construction process, it is important to control the horizontalness of the crowns, the equality of the diagonals, and make sure that there are no gaps due to loose fit of parts.

When assembling the walls, window and door flashings are immediately installed. These elements are not fixed with screws or nails.

To make a salary, you need:

• grooved board 30 mm thick;
• U-shaped profile 60x27 mm, profile thickness 2 mm;
• lumber board.

How is the casing set up? Since the double beam technology implies that there are two walls - external and internal, the design of the casing is different from the casing for log cabins.

It is necessary to take two tongue-and-groove boards and connect them with a long side. After that, you need to cut off the protruding spike and screw a few long screws through the end to fix the boards. To the resulting workpiece with bugs, you need to fasten two U-shaped profiles in parallel. The distance between the profiles and the width of the workpiece are selected based on the total thickness of the wall, the length should correspond to the height of the door or window opening minus 3-4 centimeters shrinkage allowance. The casing is "put on" on the ends of the opening.

The horizontal casing element consists of two tongue-and-groove boards connected to each other. The length of the workpiece is equal to the width of the opening. To the blank in the center, you need to screw a board 13 cm wide with self-tapping screws (the distance between the inner and outer walls of the bath). At the ends with a hacksaw, you need to cut grooves 3 cm long for accurate docking of the casing elements.

On a note! It is possible to make the entire casing without using U-profiles, according to the principle of the horizontal casing section described above.

Step 4 When the walls of the first floor are assembled, the process of wall insulation with ecowool begins.

The extreme crown is closed with a vapor barrier, in which holes are made. You can fix the vapor barrier with a conventional construction stapler.

The insulation is loaded into the cavity of the walls through the hose of the device. The hose is connected to plastic pipe, which is inserted into the vapor barrier hole and the supply of ecowool begins. Due to the use of a film that covers the upper part of the wall, the loss of insulation, its blowing out into the street, is prevented.

First, loose ecowool fills about half of the cavity of the walls, after which it begins to compact under its own weight. As a result, a uniformly insulated wall of the first floor is obtained (cotton wool lies tightly up to the very vapor barrier). Next, the specialist pulls out the pipe and adds a little ecowool directly from the hose so that there is no difference in the density of the insulation over the entire area of ​​​​the walls.

On a note! If you assemble the walls yourself using the technology of a double beam, it is possible with your own hands, then the insulation with ecowool is a process that will have to be entrusted to craftsmen who have necessary equipment. If you pour ecowool manually from bags, the density of the insulation will be insufficient and uneven, which will lead to a number of negative consequences.

When the wall insulation is completed, the vapor barrier can be removed. Further, the construction of the walls of the second floor continues, if this is provided for by the project.

The walls of the second floor are insulated with ecowool in the same way as the walls of the first floor.

The photo shows a partially dismantled window sill in order to control the quality of insulation. Window sill installed using felt

Step 5 The next step is the installation of the truss system. There are no difficulties and intricacies here, all calculations are made at the design stage, and rafters of the required sizes are made in production. rafter legs rest on a ridge beam. The elements are fixed with self-tapping screws and mounting plates.

Do not worry that the rafters under their own weight and the weight of the roof, snow, will lead to deformation of the walls. All wall nodes are very rigid, the joints are as tight as possible, and the load of the roof is evenly redistributed to the ridge beam and the upper trim.

Step 6 On the truss system roll out and attach a windproof film from above. The fixation of the canvases is carried out with a construction stapler, observing the overlap of adjacent canvases of 10-15 cm.

Window openings are also covered with a membrane. The film is cut out according to the size of the openings plus an allowance of 15-20 cm and fastened with a stapler to the inside of the beam of the outer wall.

Prices for windproof films

windproof film

Step 7 Lathing boards are attached over the membrane. Boards fasten long self-tapping screws through to the rafters. The pitch of the crate depends on the type roofing material which is selected for the bath.

Step 8 If the floor beams are not integrated, they are fixed with metal fastening supports to the building frame. The cross section of the log is 50x200 mm, the step is selected depending on the load on the ceiling, the best option for a bath is the distance between the logs of 60 cm, provided that a separate independent foundation is equipped under the sauna stove.

You can proceed to filing the subfloor and floors. Sheathing is carried out with OSB boards. First, the vapor barrier webs are fixed to the bottom of the beams with a stapler, then the OSB is fixed with self-tapping screws through to the bottom of the beams. OSB can be replaced edged board 40 mm thick. The ceilings are insulated with ecowool, falling asleep between the beams.

The rafters from below (from the side of the roof space) are sheathed with a vapor barrier. A crate is attached over the vapor barrier (again from the side of the room). Those. vapor barrier is located above and below the rafters. Ecowool will be blown into the free space.

Prices for OSB boards

OSB boards

Step 9 At this stage, equipment for supplying ecowool will again be needed. The roof needs to be insulated. Ecowool is blown through holes in the vapor barrier (they are made between the boards of the crate closer to the ridge beam. On inclined planes, the density of ecowool is up to 55 kg / m 3. Work is carried out at a height, safety rules must be observed.

If there are reinforcing elements, partitions, walls in the under-roof space, they are insulated with ecowool through technological holes. Holes are cut out in cuts with a drill with a round nozzle "crown". The diameter of the crown is chosen slightly larger than the diameter of the hose for supplying ecowool. The sawn piece is not thrown away.

Inside the cut, over the technological hole, a piece of vapor barrier is fixed with a stapler, a hole is cut out in the material with a knife, a hose is inserted there and ecowool is pumped in.

When the insulation is pumped in, the hose is removed, and the film is simply torn off the wall. Now the sawn piece of timber must be inserted into the hole, sealing the insulation layer so that the ecowool does not spill out.

It is important to qualitatively approach the issue of insulation of all cavities of the building.

Step 10 Works on the installation of roofing material.

Step 11 Hemmed cornice overhangs.

Step 12 Install a drainage system.

Step 13 They are working on laying communications. Electrical wires in the bath must be laid in a metal corrugation.

Step 14

Step 15. Facade painting works. Internal walls covered with natural impregnation based on beeswax or linseed oil.

Step 16 Cut down integrated forests.

Step 17 An imitation of a beam is mounted on technological cuts.

Step 18 They lay a fine floor covering, for example, a grooved board in a steam room, linoleum or laminate in a rest room, ceramic tiles in the shower.

Above, we examined the principle of building a building using the classic double-beam technology. The elements were assembled without insulation, any gaskets, dowels and nails. The "double beam dovetail" technology has differences, is considered even more reliable and allows you to build buildings with high number of storeys and a large area.

We have already mentioned that the house kit is cut in production strictly in size. In the corner elements there are through holes for vertical studs. Inside the walls, the studs are connected and built up. After the walls are erected from below and from above, a nut with a washer is screwed onto the studs, tightening the crowns. That is, the studs are used as pins.

A dovetail groove has been added, into which a special fastener is inserted. The connector is hammered into the groove with a mallet, placing the part with the rounded side down. It is no longer possible to pull the connector out of the beam.

The dovetail connection is made not only on the outer corners of the walls, but also on all partitions. What does it give? Even with a strong change in the linear dimensions of wood due to fluctuations in temperature and humidity, during shrinkage, the outer and inner perimeters may slightly shift vertically, but the overall geometry of the house will remain unchanged, the geometry of all corners will be preserved.

Video - Building a house using the “double beam - dovetail” technology

Video - Double timber. We build a bath 6x4. Day 1-2. Foundation and half of the walls

Video - Double timber. We build a bath 6x4. Day 3-5. The walls of the first floor are ready

Video - Double timber. We build a bath 6x4. Day 6-8. electrical, floors