One-story house with an extension. Extension to the house: photos of chic design solutions. What material can the extension be made from?

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Expansion of living space is relevant in 98% of cases, that is, exactly this percentage of the population wants this, at least in Russia, therefore, projects of extensions to wooden house interest many. Generally speaking, such structures made of timber will be the same for both a log house and a brick or stone wall. The only difference here is in the fastenings at the junction, so this topic will be useful for everyone, in addition to the information, there is an educational video in this article for your attention.

Making an extension

Material selection

Note. When choosing materials for an extension, much will depend on its size and specific purpose. So, it may not be a heated veranda or terrace, but it may also be an additional living room. Consequently, this will affect the thickness of the walls and the presence or absence of insulation.

Solid timber 100×100 mm

Material selection:

If we take into account that the house is made of wood, then most likely the extension will be made of a homogeneous material– in most cases, it is solid or
or rounded log;
the cross-section of lumber here will depend on the purpose of the room being equipped, as well as on insulation– if this occurs, then you can use the thinnest timber 100×100 mm or 170 mm in diameter;
you can also take frame construction, where the racks will be made of timber, and the cladding will be made of edged boards, lining, block house or OSB. Here you will get sandwich panels, since insulation is installed between the skin;
you can also use brick or foam block, but the price of such a structure will be slightly higher, and the time spent on construction will increase significantly, since you will have to wait for the cement-sand mortar to harden.

Layout and foundation

If your house itself is high enough and it is possible to install a shed roof for the extension under the slope of the roof of the house, then this is very good. You won't have to redo the roof as shown in the title photo.

That is, if the building is low, then from the side of the extension on the house one slope is dismantled and due to lengthening rafter legs a common roof is made for both buildings. Of course, the second option is more complex, both technically and financially. In addition, dismantling of this kind can only be done in dry and warm seasons, while you can build an extension with an autonomous roof in the winter.

You should also immediately think about the size and placement of doors and windows, so as not to solve such issues spontaneously during construction. This will allow you to more accurately calculate the materials needed.

In addition, after making the calculations, it is advisable for you to purchase everything in advance, for example:

beam;
lining;
insulation;
as well as the windows and doors that you decide to install in your extension.

That is, the windows can be either plastic or wooden, and the doors can be either wood or metal.

Note. Some craftsmen make the frame of the structure, where the openings are already marked, and order windows and doors according to these dimensions. While the further construction process is taking place, they are manufactured, and time is saved.

When various reasons If there is a need to expand the living space of a private house, then the most economical and technologically simple option is frame extension. Its advantage is the speed of construction with your own hands with minimal skill in working with carpentry tools. Step-by-step instructions for the construction stages with photographs will help you make a useful and beautiful extension, like in the video, that will last for many years.

To ensure that the extension does not subsequently have to be transformed, the design nuances should be considered even at the planning stage. First, decide on the purpose of the new premises.

By adding an extension you can expand the area of the house

Additional room. Building an additional room is equivalent to building a small house. All structures of a new building must be thoroughly insulated, otherwise heating such a room will be ineffective due to large heat loss. You should not skimp on waterproofing, otherwise dampness and mold on the walls will make it impossible to live in such a room.
Kitchen or bathroom. Take care of the let down engineering communications before you start building the foundation. Places where water mains or sewer pipes through the foundation it is necessary to insulate well. This is easier and cheaper to do during the construction phase.
A veranda is a lightweight extension to an open or glazed house. Is used for summer holiday. The building is not heated, so the design is extremely simple: the flooring, walls and roof are on supports. Do not forget about harmony; the veranda must be combined with the house in scale, style and materials of construction.

Selecting the base

The veranda can be attached or built-in. If the second is planned at the stage of building a house, then a separate foundation will need to be built for the first. With a gap from the wall of about 40 mm. Otherwise, during shrinkage, the monolithic base will collapse due to different weights verandas and houses. The seismicity of the soil and the weight of the future building are taken into account. A lightweight foundation built on soil prone to heaving will “lead” and the extension will move away from the house. This base is designed for light walls, under the weight brickwork shrinkage is inevitable.

Brick columnar foundation

For construction they use different materials: concrete, brick, stone, piles made of wood, metal or concrete. It is important to choose the right depth and type of foundation for the extension:

tape;
slab;
columnar;
pile;
pile-grillage.

In private construction, when constructing a base for a veranda, a columnar or strip structure is most often used. Let's take a closer look step by step instructions arrangement of foundations.

Strip foundation

For large and heavy buildings, a strip type of base is chosen. It is advisable to make it from concrete in this sequence.

Important. Before erecting walls, waterproofing must be applied to the foundation. Use rolled materials or mastic.

Columnar foundation

For easy frame veranda It is appropriate to erect a columnar foundation, which is made of brick, rubble stone or concrete. Or combine these materials. The holes for the pillars are dug to a depth below freezing of the soil. The step between the pillars is about 60 cm. Sequence of work:

dig square holes 50 x 50 cm. Sand is poured onto the bottom and compacted thoroughly;
lay a layer concrete mortar, and after complete setting, they begin to erect brick supports. Use a level to ensure that the masonry is strictly vertical;
a concrete support is made in the same way as a strip foundation: the inside of the formwork is wrapped with waterproofing and a reinforced frame is inserted. The form is filled with concrete, and the top is leveled. Wet the concrete a couple of times a day to avoid cracking;

Enough for a veranda columnar foundation

after complete drying, the formwork is removed, waterproofing is applied to the pillar, and the top is covered with several layers of roofing material - the material will protect the wooden floor beam from getting wet;
the remaining voids are filled with backfill: soil mixed with crushed stone is filled in, compacted every 15 cm of the layer.

Important. The height of the foundation pillars is calculated so that the distance to the finished floor of the extension is 30 cm.

Floor: wood or concrete

A concrete or wooden floor is installed on a strip foundation. The base on pillars is obviously designed for arranging a wooden floor. Let's look at both technologies.

Construction of frame and walls

Wall structures are erected from timber, attached to previously assembled crown beams. The wall elements are assembled on a flat area in a horizontal position, and then the finished wall panel is mounted in a vertical position or each beam is connected to a beam in series. Step-by-step instruction:

On lower bars make a cut for vertical posts every 50 cm.
Mount the racks, securing them with corners and self-tapping screws.
Assemble the top harness.

Construction of the frame

The veranda is connected to the house by attaching a vertical beam to the wall.
Secure all posts adjacent to the house with anchor bolts.
It is better to immediately sheathe the finished “skeleton” of the veranda with outside plywood, boards or OSB. This will give the structure rigidity.
After constructing and insulating the roof, install windows and doors.

Ceiling and roofing

The shed type of roofing can be combined with almost any roof of the house, therefore it is the most common configuration. Let's consider it.

Insulation of walls and floors

Used as insulation material for walls mineral wool. The mats are easily and quickly laid between the frame bars, as can be seen in the photo. When laying insulation in several layers, the mats are shifted relative to each other to prevent heat loss through the joining seams. The insulation is covered on both sides with steam and wind insulating material, which will protect the material from moisture accumulation, and the top is sheathed finishing material. Internal walls can be sheathed with chipboard, plasterboard and covered with wallpaper or lined with clapboard. For outer wall use wood, siding or materials that match the finish of the home.

Floor on wooden joists They are insulated in the same way as walls: mineral wool is laid on the subfloor between the joists, having previously covered the boards with a waterproofing membrane. A second layer of waterproofing is laid on top of the insulation and then leveled with plywood. After this, the finished floor covering is installed.

A concrete floor can be insulated similarly to a wooden one, apply a dry screed, make concrete screed and install water or electric heating.

Do-it-yourselfers often overlook the need to comply with safety regulations. Use the funds personal protection and well-oiled reliable tool and then you will have only the warmest memories from the construction of the extension.

Frame extension on stilts: video

Very often people have to make an extension to their house. The reason may be the need to increase space, but simple redevelopment does not solve this problem, and you have to expand. Or the house was initially inconveniently designed - for example, with the “box” that was previously adopted by architects, which today is completely out of date, because complex projects are in fashion these days. Perhaps the early construction did not take into account the “wind rose”, so it was necessary to make additional protective structure in the form of a garage, veranda or workshop.

In general, there are many reasons why people decide to interfere with the integrity of their home. At the same time, very often it is necessary to remodel wooden housing - especially if it is an old housing stock. Let's look at how an extension to a wooden house is made and how realistic it is to build it with your own hands.

Not an addition, but a full-fledged part!

It is important to understand that an extension is not at all an add-on to the main building, as the name might suggest. She's the same important element the entire structure. Structurally connected with it and subsequently influencing the entire viability of the house. If this is not taken into account, problems with the stability of the entire house may arise in the future. Not to mention the fact that appearance home may be damaged. Therefore, do not try to save money on good foundation, a well-thought-out project - these flaws will come out after an increase in the cost of maintaining the house, an increase in heat loss and many other surprises. And, of course, you need to coordinate construction projects and obtain all the necessary permits.

The foundation is the basis in every sense

No matter what kind of extension construction you start, you cannot do without a foundation. Since the extension is a structurally independent structure, it is also advisable to carry out its construction in two steps to make the foundation, and after a year, when it has settled down and shrinks, continue the construction of everything else. This will help to avoid deformation changes in the structure and, therefore, prevent the occurrence of cracks and other defects.

The foundation is always built taking into account the terrain, soil, and the weight of the house and extension. It may be U-shaped adjacent to the house, or it may not be connected to it at all (this also happens when they decide to build a fourth wall in an extension).

Concerning wooden house, then the foundation of the extension requires special attention. Depending on the choice of material for the extension and on the method of docking it to the house, the foundation base can be either tied to the house with reinforcement or separated from it expansion joints- so that parts of the house different in materials sit independently and do not lead to the corners of the house.

Frame-based extension

The frame extension fits organically into the design of the house

The construction of an extension to a wooden house can be started from any wall material. However, preferable to others in terms of price-quality ratio would be an extension frame technology. It will not require a complex foundation and heavy walls. At the same time, the shrinkage of such a structure is minimal; finishing can be done quickly and construction can be completed. At the same time, it is quite possible to do such work with your own hands. By the way, the frame construction method involves more thin walls extensions without reducing thermal conductivity, so the building is smaller, and the living area itself is larger.

The foundation with such material is sufficient without deepening; it is easy to make with your own hands, for example, strip or tiled. A waterproofing material - roofing felt - is laid on top of it.

The important point is compliance general style main building. After all, if an old house built from timber or logs, then making and installing an extension from a completely identical material will not be easy both from a technical and material point of view. But it is possible to sheathe a frame extension with a material that imitates the walls of a house. In this case, it will be possible to repeat the cuts, the ends, and other structural elements.

To attach an extension to a wooden house, racks-bars are attached to the walls of the house; wall cladding elements will subsequently be nailed to them. The frame itself can be made with your own hands according to the diagram below.

Stages of work:

Lay the perimeter of the frame with a beam of at least 15 cm. Use the same beam or board to position the corner posts using a level.
Make the top trim from edged boards. Secure the boards to the top trim with self-tapping screws.
Insulate the walls with polystyrene foam, polystyrene foam or mineral wool.
Lay hydro- and vapor barriers, also securing them with self-tapping screws.
Sew up the insulation OSB boards, plywood, plasterboard, etc.

Extension using frame-timber technology

An extension to a house made of timber can be used as part of the house

In general, these are all variants of the frame method. In this case, the frame is also a load-bearing part, and the cladding is made of glued or profiled timber of small cross-section. The timber simultaneously acts as an external facing material.

At the same time, if everything is done correctly, adding an extension to a wooden house with your own hands will turn out no worse than in the picture about wooden architecture.

The new part may shrink during the first six months, and to prevent distortion from occurring, it is attached to the old building either with metal brackets or special metal corners. Both are not tightly attached to allow the extension to “play” a little as the timber shrinks.

The connection of two foundations occurs best when both foundations are made using the same method - if using a strip method, then they are fastened with reinforcement. If everything is connected correctly, the extension will be securely attached to the main building, despite the movement of the ground.

Extension made of foam concrete

Foam blocks during construction allow the developer to take advantage of additional architectural opportunities

This material has advantages - it is light, warm, and easy to build with. But at the same time, foam concrete is fragile and subject to deformation. Cladding work cannot be postponed until the next season, so as not to burst the seams, and the quality of the blocks often causes criticism.

Another point is that the heterogeneity of the materials of the extension and the house can lead to displacement from the effects of weather and other factors. Therefore, if you intend to build from foam concrete, then the best option would be not to connect them, but to lay a layer of mineral wool between them, which is then covered with any suitable material.

The same method should be followed with a brick extension. By the way, brick, as well as foam blocks during construction, allow the developer to take advantage of additional architectural opportunities.

Using metal frames for extensions

Metal frames are suitable for the construction of low-rise private housing

U modern manufacturers Recently a new proposal has appeared - strong and durable metal frames. They are applicable for the construction of low-rise private housing or an extension is needed.

However, compared to frame method this method is more expensive and more difficult. Therefore, private developers are still resorting to reliable wooden frames.

No matter how large your area is a private house, sometimes it is necessary to add another room to it. Appointment new room can be different: a bedroom, a storage room, Gym, veranda, dining room, even a bathhouse or garage. The best option in this case, an extension to a frame house. The structure is placed on a foundation, a kind of frame “skeleton” is made, onto which walls made of OSB boards, insulation and waterproofing are “put on”. The extension to the house is equipped with a floor and a separate roof, sometimes windows and always a door.

Before starting construction of a frame extension to the house, decide on its location. On the north or east side it is advisable to place a pantry or utility room, on the south or west - a bedroom or living room (then there will be a lot of light in the room, during the day the sun will warm up the frame extension, so you will save on heating).

If there will be a bedroom or living room in the extension, then make it using south side- this way you can save a little on heating costs

Now sketch out a plan of the house with a new room on a piece of paper, indicate the exact dimensions of the building and the materials that will be used in construction.

This plan must be submitted to the technical inventory bureau of your locality. Of course, not all homeowners run to BTI to organize a frame extension. But in vain! If checked, the illegal building will most likely be required to be demolished. Do you need such problems?

As practice shows, BTI specialists will not create obstacles and will quickly approve the project (within a maximum of 10 working days).

Permission from the BTI for an extension to the house will be issued within 10 days. Provided that the application meets all established requirements, and the construction meets technical standards

Tools and materials for creating a frame extension to the house

Permission from the BTI has been received. Now you need to prepare tools and materials for construction. You will need:

cement mortar;
wooden boards;
sand;
small pebbles;
OSB boards;
insulation;
waterproofing;
putty;
paint for OSB boards;
roofing material;
wooden or steel door(at the request of the owner);
window in plastic or wooden frame(if necessary);
linoleum, ceramic slabs or laminate flooring;
perforator;
construction mixer;
rollers and brushes;
nails and screws;
polyurethane foam;
construction stapler;
shovel;
metal pipes diameter 15-20 cm, length 2.7-3 m.

Cement mortar is sold in bags of 25 kilograms each. The rules of use are indicated on the product packaging. Price – 700 to 2 thousand rubles, one of the best manufacturers- “Silka”, “Maxsil”, “Mapey”.

The base of the extension must be strong and stable, so choose high-quality cement for the foundation, not a cheap mixture

Wooden boards will first be needed to create the foundation formwork. They can then be used to cover a cement-filled floor to insulate and soften it. For such purposes, spruce, pine, and oak are best suited. The thickness of the board is at least 5 millimeters. Choose the length depending on the area of the frame extension to the house.

Choose OSB with a thickness of at least 7 millimeters with dimensions of 100 × 100 centimeters. The slab itself should be smooth and monochromatic. This indicates the high quality of the product.

Mineral wool or expanded polystyrene can be used as insulation. The first option is cheap, but the material quickly becomes unusable. Expanded polystyrene has a long service life (up to 20 years). Sold in the form of slabs, the dimensions of one are 200 × 100 centimeters.

Choose products from 10 millimeters thick from the companies: Penoplex, Extrol, TechnoNikol.

Expanded polystyrene for insulating an extension to a house is preferable to mineral wool. It does not absorb liquid and is not afraid of temperature changes

Waterproofing is a must. As such, you can use a polymer roll material. Thickness – at least 5 millimeters.

Price per square meter– about 500 rubles. Among the companies, users recommend giving preference to the following: “Bolars”, “Penetron”, “Polylen”, “Zubr”.

Putty and paint are needed for exterior and interior decoration. You can find out more about choosing paint.

You can put metal tiles on the roof. This is a durable and weather-resistant material that will last a long time, besides, it looks stylish and is inexpensive.

You will pay 200-400 rubles per square meter. The thickness of the tiles must be at least 5 millimeters.

Important: the easiest way to create a frame extension to a house is using OSB. Such a room will be warm and durable if it is properly insulated. Of course, you can build walls from brick, foam blocks or wooden beams. But it is much more expensive and energy-consuming.

The drawings below will help you decide on the type of room:

Using such a drawing, you can create a simple extension to the house with pitched roof. Use your own sizes

Such a drawing of an extension to the house will help you quickly and easily build extra room or, for example, a pantry

By stages: stages of building construction

The process of constructing a frame extension to a wooden house can be divided into several stages:

creating a foundation;
floor filling;
erection of a frame for an extension;
wall production;
roof laying;
installation of windows, doors;
external finishing;
interior decoration.

Work must be performed sequentially, following the instructions and safety precautions. For some “events” (installing windows, laying a roof), it is advisable to involve an assistant.

A strong foundation: pouring the foundation

To create a frame extension to the house you need to fill strip foundation. But if on the site high level groundwater, then it is more correct to make a pile or columnar foundation.

The instructions for constructing a strip foundation are as follows:

Mark and dig a trench 30 centimeters deep and 20 cm wide. The result should be a rectangle or square.
Fill the trench first with sand, then with stones exactly halfway for strength.
Insert metal pipes at the corners of the trench. They will serve as the basis for the future frame.
Build formwork for the foundation from boards and fill the trench cement mortar, prepared strictly according to the instructions.
Leave the structure for 24 hours until completely dry.
Then fill the floor with cement mortar. It will dry completely in a day or two, depending on weather conditions. The warmer it is outside, the faster the cement hardens.

You will learn how to make a strip foundation from the video.

If you need columnar or pile foundation, watch the following videos. They will talk about the rules for constructing such foundations.

Durable “skeleton”: install the frame

The future building already has iron pipes. Between them, other metal pipes are welded horizontally from the floor to the end of the pipe. The distance between parallel parts is at least 70 centimeters. You can “connect” the corner iron parts to each other using wooden boards. They will also serve as a frame.

Important: if the distance between the corner tubes is more than 1 meter, then you can place another one in the middle vertical pipe or a board to give the frame strength and reliability.

To learn how to make a frame for an extension to a house, watch the video.

Construction “sandwich”: building walls

Now, in the process of building an extension from a frame to a wooden house with your own hands, the most difficult and interesting part begins: the construction of walls. There is already one camp - it is part of the house. There are three more left to do:

Attach the OSB to the frame using nails. There should be no large gaps of more than 3 millimeters between them.
Secure the waterproofing on the inside of the OSB board using a construction stapler. The material should cover the entire area of the walls - from top to bottom.
Attach the insulation to the waterproofing using polyurethane foam. The work is not difficult. It is quite possible to cope with it alone. Do not apply too thick a layer of foam and press the insulation board tightly against the OSB wall.
Place OSB boards on the insulation. Attach them with self-tapping screws.
Attach waterproofing to the existing wall of the house, and OSB on top.
If gaps have formed between the slabs themselves or the floor, fill them with foam.

Builders call this design a “sandwich.” It is erected quickly and simply, but is practical to use, reliable and durable.

If you need to install windows and doors, provide them before you begin installing the walls. In OSB boards, you will need to pre-cut holes of the required size.

You will learn more about the plates themselves from the video:

Serious protection: no way without a roof

The roof for a frame extension to a house can be made pitched or. In any case, its creation involves the following steps:

We build the base from wooden boards.
We lay insulation on top.
We put waterproofing on the insulation.
We fasten the metal tiles on top with an overlap. In this case, moisture from precipitation will not accumulate under the tiles.

The shed roof of the extension to the house seems to continue the existing roof. It's quite simple to build. Enough to put on the main roof wooden slats required length

To make it beautiful: interior and exterior decoration

The construction of a frame extension to the house is not completed until the interior and exterior finishing is completed.

The best option for OSB boards is painting.

First the surface is prepared:

sanding is carried out;
antiseptics are applied ( good quality at "Tikso", "Drevolak");
primer treatment (“Body”, “Tex”).

Then the slab is painted. They use alkyd, oil, water-based, acrylic, latex paints. For external and interior work different products are used. Information on which surfaces a specific colorant can be used on is indicated on the packaging.

You can find out more about painting OSB.

TO interior decoration This also includes floor treatment. On cement screed put waterproofing, then insulation and wooden boards (this step can be skipped if you put laminate, linoleum or ceramic tiles on the insulation).

What's next?

It would seem that the frame extension to the house is ready. But putting it into operation is not yet possible - first you need to install electrical wiring into the room, install heating radiators and connect them to the main heating system private house.

You will learn how to do the wiring.

Read about the heating system.

To make the extension to your house cozy at any time of the year, install wiring inside and install heating radiators

Finally

To ensure that the frame extension to your house is strong and safe, strictly follow the basic rules when building private houses in general and creating extensions in particular. Do not forget about basic safety requirements at a construction site. Protect your hands and eyes, work in special clothing and durable shoes.

The simplest option for creating an extension from a frame for a house is an OSB board. It is quite light, but fully copes with its “professional responsibilities”.

There is an opinion that using OSB is unsafe for health - products are impregnated with a mixture of phenol for strength. However, when painting and priming, phenol is contained and is not released, so OSB does not harm health.

The desire to increase your country house Over time, it appears in almost every owner of a private home. And an excellent solution in this matter would be an extension to an existing house.

Begin construction works from drawing up a project, where it is necessary to clearly and clearly draw a plan of the planned object, think through the connection of all premises with the existing house, choose the type of structures, foundation and decide which ones Construction Materials will be used. The financial costs of construction will depend on the correct development of the design stage. At this stage, it is also worth deciding on the nature of the use of this building, namely, whether it will be seasonal or year-round, and also decide how many storeys the new building will have.

There are several common types of extensions that can be classified according to their purpose.

Summer room (kitchen or veranda).

Such an extension is usually one-story and is used in the warm season. It is convenient for spending time together, family dinners, relaxation, etc. Of course, it is necessary to construct a light or shallow foundation, preferably independent from the main building of the house.

Such a structure usually has pitched roof(Fig. 1, 2). As roofing material It is recommended to use metal tiles or polycarbonate. In this case, it makes no sense to do thermal insulation, because the room will not be used in winter. It is worth noting that minimum angle the roof slope is 8°, you cannot do less, otherwise leaks will appear after rain and snowfalls.

Living room and attic, if the extension is two-story (Fig. 3, 4).

In this case, a more thorough approach will be required for constructing the foundation, erecting permanent walls and roofs, as well as installing waterproofing and thermal insulation materials, supply of all utilities.

Should be given Special attention thermal insulation of walls, roof and floor, taking into account that the extension will be used in the cold season, and accordingly heating.

Before starting construction, you need to consider the condition of the house. The pairing of roofing and foundation structures will depend on this criterion. And it is worth considering that due to the difference in the magnitude of the load that the main structure and the extension will exert on the ground, there is a high probability that over time they will move relative to each other.

Another option for an extension to the house could be a separate building, closely adjacent to the main one., which quite often becomes the only possible

due to the fact that the old house may not withstand the reconstruction of the roof, and this will disrupt the stability of the entire structure.

Also the extension may differ in the type of foundation. Usually, a separate foundation is arranged for an extension, which is connected to the base of the old house using embedded reinforcement.

Of course more correct option- This is the general foundation that is laid at the stage of building a house. However, this happens quite rarely, and therefore it is worth ensuring maximum similarity of the foundations in terms of material and depth.

The most constructive and competent solution may be a separate foundation for the extension. The most common in this regard today is the foundation on screw piles(Fig. 5, 6). After screwing into the ground, the piles are combined into a single grillage by welding several metal channels or wooden beam. This results in a separate and independent foundation that will not be connected in any way to the main house, since the existing foundation can continue to move downwards, which can lead to deformation of the structure.

At the same time, between two buildings a minimum of possible distance, i.e. a technological gap that is filled with thermal insulation and waterproofing materials.

An extension to the house can be made using frame technology or from wooden beams (Fig. 5, 6).

Frame technology the most acceptable, since it is light in weight and consists of the construction of a frame made of wooden beams and filled with insulation. For example, these can be SIP panels, which in cross-section represent a three-layer “pie” of two load-bearing surfaces (usually OSB), between which foamed polystyrene foam is pressed, where the thickness of the insulation can be different, so you can select panels for any climatic region. In this case, no cladding is required additional materials, which will reduce construction costs.

It will be enough interior painting panels varnished. It is also worth saying that a timber extension to a wooden house can be of two types: three walls and a fourth load-bearing one, which is already in the house, or three walls, which is the most reasonable in terms of material consumption. If planned winter accommodation, then it is worth using a material whose cross-section is at least 150 x 150 or 200 x 200 mm.

This type of timber is quite heavy, but it will also last longer. After the walls are erected, the remaining cracks must be sealed, otherwise it will be very cold in the extension. You can do this using modern insulation materials based basalt wool or polyurethane foam.