How to build a mansard roof with your own hands and not make mistakes
A modern mansard roof is a great opportunity to significantly expand the living space of your home without unnecessary hassle. But, if you involve builders in the work, then it can cost a pretty penny. It is quite understandable that each of us thought about the question of whether it is possible to do everything on our own without experience. We assure you that a mansard roof with your own hands is more than real. We offer you a comprehensive instruction.
What to consider when building
Currently, the best option is a broken attic. It is quite spacious and can really become a full-fledged living space with a large area. Naturally, this requires accurate calculations.
Building a mansard roof will require you to consider many factors before starting to build a house. Let's list the main ones.
Do-it-yourself video about the mansard roof of a house
It is quite understandable that the smaller the angle of inclination, the more usable space there will be in your attic. But it is not always necessary to strive for the most shallow placement. Let's list some features of the choice:
- If your house is located in an area with a temperate climate, where the weather is often windy, and snow is rare, then you can safely make a roof with a small slope;
- If snowfalls and showers are frequent in your area, you should refuse a flat roof;
- Do not forget that you need to take care of high-quality heat, sound and waterproofing. The attic is a living space like the rest of the rooms in your house;
- The best roofing materials are shingles or slate. Many people mistakenly put a metal covering, but with the arrival of cold weather they face problems of heat conservation in the attic. Please note that the materials must be fire and moisture resistant. The roof is always made of timber. For the best preservation, it is recommended to treat all such surfaces with an antifungal solution;
- An outdoor attic staircase will significantly save space in the house. An internal staircase is a much more convenient option, but it also takes up a lot of space. Great if you take care of installing a ceiling ladder. She practically does not take up space. Alternatively, you can install a spiral staircase, but its convenience is often questioned.
An outdoor attic staircase will significantly save space in the house
How to build an attic - step by step instructions
- To get started, you need wooden beams 10x10 cm in cross section. They are applied over the waterproofing. The best material for her is roofing felt or roofing felt, which is sold in rolls. It is quite convenient to work with them and you will not need any additional skills. If your ceiling is also made of wood, then there is no need to lay an additional beam under the main beams.
- The next step is to install the racks on the beams. The same beam with a section of 10x10 cm will suit you. These racks are a kind of skeleton of the walls of your attic. In order for them to fully perform their functions, they must be placed no further than two meters from each other. Make sure that each of them is perfectly level. We recommend checking each one with the level and, if necessary, sawing in the right places. Once the racks are installed, they must be sheathed on both sides. For the inside, a great option is drywall or ordinary plywood, for the outside, a slab. It is important not to forget at this stage to lay the insulation between the racks. Each post is individually secured with spikes and brackets. To prevent them from tilting, we recommend fixing them properly with temporary braces.
- Next, lay the top bar. Its cross section should be the same as in the previous paragraphs. You can fix it as you like. But make sure that the beams are held firmly and securely.
Each post is individually secured with spikes and brackets
- Now you need to install the Mauerlat. This is a kind of support for the rafter leg, which is located at the bottom of the structure. For a Mauerlat, you will need a 40x40 cm bar or a board with the same thickness. Thanks to the Mauerlat, a high strength of fastening the roof rafters to the walls will be ensured. It allows the weight of the roof to be redirected directly onto the walls. It is not necessary to take a section over 40 cm. All the same, the Mauerlat lies directly on the wall and the load on it is relatively small. Just do not forget to put waterproofing under it, otherwise over time it will start to rot.
- A well-fixed Mauerlat protects your roof from the effects of wind, snow mass in winter and other loads. Therefore, make sure that it is secured carefully. For this, you can use a wire with a diameter of up to 5 mm. It is best to choose an annealed wire, which is just for the strapping. In order to make the walls more durable, the wire is embedded directly into them.
- Now you need to install the rafter legs. Make markings on the rafter frame and Mauerlat in the places where the rafters will be installed. Usually, the step is 1-1.2 m. For the rafters, a board with a section of 4-5 cm and a width of 15 cm is suitable for you. Choose only perfectly flat boards. It is better to overpay a little money for them, but be sure that a living attic with your own hands will not cause you to collapse the attic roof.
For rafters, a board with a section of 4-5 cm and a width of 15 cm is suitable for you
- The rafter legs should rest on the ridge beam. If your attic has a large area, then the weight of its roof will be large. Therefore, the beam is an indispensable structural element. It is not needed only if the length of the rafters is less than eight meters. In this case, you can do with the usual stretch marks.
- Installation of fillies. Produce it in the same way as the rafters. To simplify the process, start with the two outermost ones, pull the twine between them and align with it when installing the next ones.
- Now you need to nail a hem board to the filly. It will become an obstacle to wind and almost any precipitation.
- Before making a mansard roof, you must consider where the windows will be installed. Remember that their area should occupy at least 12-13% of the area of the side walls. Where you decide to put windows, you need to strengthen the rafters. To do this, install the crossbars. They will take on the role of the lower and upper part of the opening, where the window frame will be installed and fastened.
Before making a mansard roof, you must think about where the windows will be installed.
The skeleton of the roof is ready. We work further
When the previous ten points have been completed, you need to carefully check everything that has been done. Already at this stage, you will understand how to make a roof with an attic without any problems, but you always need to be reinsured. Especially if this is your first time doing it.
Carefully walk the level over all the rafters and beams, check if they really hold tightly and securely, if there is insulation everywhere, if you need to modify problem areas. It will be better if you ask one of the more experienced builders to evaluate with a trained eye whether everything is really done as it should. Remember that the roof in your home must be safe and strong. But if everything is fine and the structure is held securely, you can proceed to further work:
- You have already created the skeleton of the roof. Now you need to nail the battens to the rafters. The step depends on what kind of roofing material you choose for your roof.
- When the crate is installed, a hydro-barrier must be installed on it. In most cases, plain plastic wrap works best for this. It is inexpensive, qualitatively protects the attic from moisture ingress and is easily attached with construction brackets. The main thing to remember is that the layers of the film must be laid from bottom to top with overlap of layers on top of each other.
- It is necessary to put a heat-insulating layer on top of the film. One of the best materials for this purpose is rock wool. It is lightweight, keeps heat well and at the same time is completely safe for your health, unlike many other heat-insulating materials. Plus, it effectively prevents the spread of rodents in your home.
A heat-insulating layer must be placed on top of the film.
- When you get to the roof, proceed in the same way as in the case of plastic wrap. The roofing ball also rests from bottom to top, and the elements overlap. Make sure that in those places where the roof break is located, the upper roof ball protrudes above the lower one. It is very important. Otherwise, with the slightest rain, your roof will leak, and the structure will gradually rot.
- The installation of the ridge should be done in such a way that its design completely excludes the possibility of rainfall getting under the roof of your roof.
Completion of installation
The main part of the work has come to an end. It is recommended to make mansard roofs multi-layer, so that they provide the best thermal, noise and waterproofing of the entire attic. Do not forget also that the attic must "breathe". Modern windows and doors are an integral part of any such roof.
If you have not completely decided on the installation of the stairs, then first it is better to install an external one. It will be cheaper and easier this way. In any case, if you feel that this option is not suitable for you, you can make a staircase indoors whenever you want, sacrificing space in the house.
Video about a gable roof
Further, you will only have facing work, which, in fact, does not present any difficulties for anyone who has made repairs in the house at least once.
Now you know how to build a mansard roof according to all the rules and not resort to the help of an expensive team of builders. Please be patient, select quality materials and tools, and then follow our instructions. Good luck!
OSB slabs are a modern building material, they are used as an alternative to chipboard and plywood in the construction of houses using frame technology, and are also used in exterior and interior decoration. These sheets are used to strengthen the internal walls, used for furniture and as a facing material for the front of the house. For self-construction and decoration of houses.
Not everyone knows how to properly fix OSB slabs to the facade of a building, so it is worth considering this issue in more detail.
For facing the facade, OSB-3 is used, since they can withstand high humidity. The lathing is performed for:
• leveling the surface of the walls
• to install a ventilation gap to install insulation
• elimination of deformation of the front of the house.
In order to improve the quality of OSB-3, it is coated with paint or varnish.
Sheathing with OSB plates from the outside of the house
Mansard roof rafter system: design features
A good design is needed before building an attic. The appearance of the future roof should be in harmony with the general appearance of the building. There are several types of rafter frame construction, which depend on the type of roof, the pitch of the rafters and the option of the attic roof. Having opted for a specific configuration, you should know exactly what structural elements the rafter system consists of. It is the supporting skeleton of the roof, and withstands not only its weight, but also the effects of atmospheric precipitation.
The roof rafter system has its own configuration features that are important to consider when planning and building
Correct installation of the rafter system ensures its reliability, functionality and durability.
When creating a mansard roof project, you should:
- perform the correct calculation of the load on the supporting load-bearing walls and foundation, not allowing it to be exceeded
- select high-quality thermal insulation to avoid uneven heating of the room
- choose good sound insulation thanks to the right roofing material
- choose a good waterproofing
- choose lightweight facing materials for finishing the attic space.
Mansard roof schemes
The rafter system can have an inclined or hanging structure. In hanging structures, the rafters are supported by the Mauerlat and the ridge girder. To distribute the load on the rafters, lower and upper tightenings are installed. When the length of the slope is more than 4 m, to prevent sagging in the lower part of the structure, the rafter legs are supported with racks and struts. The main advantage of this design is that all its elements are placed in unused places in the attic, which creates more free space.
Correct and accurate calculation of the attic roof allows you to get a reliable and durable structure
The sloped structure is used in houses where a load-bearing partition is located in the middle of the building, on which the construction legs rest. A bed is laid on the internal supporting structure, which plays the role of a Mauerlat, and racks are mounted on it that hold the ridge girder. This system is used for large areas of the mansard roof of a private house, the structure of which can be seen in the photo. Heavyweight roofing materials such as slate or ceramic tiles can be used here.
There are projects of attic roofs for private houses, where both options of truss systems are used. To free up free space, the frame elements can be shifted to one of the sides, where they will be used as a basis for wall decoration, and the crossbar is suitable for ceiling cladding. In some architectural styles, beams and pillars can be used as decorative elements.
To equip a large eaves overhang, the mansard roof is made with an emphasis outside the load-bearing walls. Mauerlat is not installed here. The system is mounted using beams. A brace must be installed, special racks are cut into the floor beams, and the rafters are fixed using a reliable anchor connection and wire twists.
Mansard roof truss system diagram
Liquid rubber qualifies:
- According to the number of constituents: one-component (liquid multicolor mass that does not require preliminary preparation, completely ready for application) two-component (consists of a hardener and a base, requires preparation).
- By the method of application. Painting: the composition in liquid or pasty form is applied with a brush, roller, creating a dense protective film, stopping all microcracks. Spraying: the surface is treated with a cold solution from a special installation at an optimal speed. Bulk: a mixture of liquid rubber is prepared immediately before applying waterproofing protection.
Materials used for the construction of mini greenhouses for summer cottages
Speaking about materials for a greenhouse, it is worth paying attention to the fact that the structure should consist of two parts: lower and upper. The lower part is represented by a simple drainage system, which is easy to make from organic debris, fallen leaves, straw, etc. From above, all this is covered with earth. This is not necessary, but drainage will provide the plants with extra warmth.
Mini greenhouses for germinating seeds in the open field can be created using wire, film and a hair dryer to fix polyethylene
As for the upper part, which is represented directly by the greenhouse box, there are many options. Today, in mass production, more and more preference is given to frames made of profiled or metal-plastic pipes. If we are talking about a greenhouse with our own hands from scrap materials, the photos show us the incredible variety of available solutions.
For example, greenhouses made of plastic bottles, pipe and film structures, and frame greenhouses are very popular. It is not difficult to implement any of these options with your own hands, especially if you follow the step-by-step instructions for work.
It is especially worth noting the use of wood in the construction of such structures. This applies to both the construction of greenhouses with your own hands from old window frames, and those cases when the frame is assembled from a bar. This material is used quite often, despite the fact that it is more susceptible to the process of decay, as well as deformation as a result of drying out.
Mini greenhouses are convenient because they can be easily placed in any desired place, even on the balcony of the apartment.
As for the covering materials, there are only three options: film, glass and polycarbonate. In the first case, the main advantage is low cost. Having spent quite a bit of money, you can get a suitable covering material that will last one, and with careful treatment, even two seasons.
Glass is a completely different matter. It is much more durable, although it can break as a result of impact. Of course, no one buys glass especially for a greenhouse, since it has a lot of weight and its use simply will not be justified, but if we are talking about using window frames with already built-in glass for this purpose, then this option is quite acceptable.
Today, polycarbonate is considered the ideal option. This material has combined all the best qualities, and allowed the owners of suburban areas to create light, comfortable and inexpensive greenhouses. Polycarbonate is easy to work with, and its light transmittance allows plants to get enough sunlight and warmth.
In the warm season, as a shelter for a small greenhouse, you can use non-woven polypropylene fiber - spunbond, which allows fresh air to pass through well, but at the same time allows you to control the microclimate
Helpful advice! One of the main requirements for the covering material for greenhouses is high light transmittance. That is why, even if we are talking about self-made greenhouses made of plastic, it is worth taking care that the plants do not suffer from a lack of sunlight.
Do-it-yourself roof structure with an attic, attic floor diagram
The attic is the name for the attic space located under the roof of the house, which is supposed to be used for housing needs. Thanks to French architects, it is possible to create projects in which the device of the mansard roof of a private house allows the most rational use of the space under the roof. This article will be devoted to what are the mansards with a pitched roof, what are their most important advantages, and how to use one or another type of structure correctly.
Varieties of roof structures
It is best if the attic is added to the project of the house even before construction begins. However, there are times when the attic remodeling is resorted to some time after the start of using the house. This happens when the owners decide to expand their living space. According to experts, the attic can be equipped under any type of roof, however, such a step will not always be considered rational.
The device of the attic roof means equipping it under one of these types of roofs:
- Single slope... Such roofs have one inclined plane. It is rarely used for arranging the attic due to the fact that the difference in the walls should exceed 2.5 m.For slopes with large angles of inclination, a reinforced rafter system is needed, and large material costs will also be required.
- Gable... This type of roof is considered more rational. The downside of a gable roof is that the angle of both slopes must be at least 25-60 degrees to provide sufficient living space. In addition, the formed corners between the floor and the base of the roof create an excessively low height for effective use.
- Broken lines... In such roofs, slopes are formed from two planes at different angles. Slope parts with steeper angles increase usable space, while sloping upper parts reduce roofing costs. This design is considered somewhat more complicated due to the use of a more massive frame.
- Hip and half-hip roofs... This is the name of the four-pitched roofs, in which two slopes are fully or partially replaced by hips. Such a design makes it possible to equip a room with sufficient internal space and rather high ceilings, however, it is built very rarely due to the complexity of the structure itself, as well as high financial costs.
It is worth noting that when creating a house project, it is worthwhile to decide in advance how the space under the roof will be used. Given the fact that the attic will significantly increase the load on the foundation, a reinforced rafter system and expanded load-bearing capabilities of the walls will be needed.
Types of roof truss systems for a private house
If you decide to equip the attic roof with your own hands, it is worth considering the type of rafter system used. All of its elements must be made of durable wood.
There are such types of rafter systems:
- Hanging... These are systems in which the rafters are held only on a ridge run and a Mauerlat mounted on load-bearing walls. To extinguish the loads on the spacer, install the upper and lower puffs. If the slope has a length of more than 4 m, the rafters are supported from below with struts or racks to prevent sagging. The positive side of such a rafter system is that all nodes are located in unused areas of the attic. Thanks to this, there is a lot of free space in it.
- Fortified... This type of rafter system is used in houses where a load-bearing partition is installed in the middle of the box, which plays the role of additional support for the rafter legs. A bed is laid on the wall located inside, which in this case serves as a Mauerlat, and stands are placed to support the ridge run. Raised roof systems make it possible to install large roofs, as well as those that have a significant mass.
It is worth noting that there are options for constructing the roof of the attic floor, in which the rafter systems of the hanging or layered type are used. To increase free space, the nodes of the frame are spread apart, hiding their walls, and the crossbar is sheathed under the ceiling. Quite often, equipping a lean-to attic, racks and beams are installed in such a way that they are part of the decor elements.
DIY attic construction rules
The erection of the roof of a house with an attic with your own hands should be carried out in strict accordance with building codes, since the attic is considered a living space. If you build it without observing these standards, then it will not be an attic, but an ordinary attic room.
In order to be able to live in such a room, the structure of the attic roof must meet the following parameters:
- The distance from floor to ceiling must meet sanitary standards, and be at least 2.3 meters. This means that the gap between the floor and the ridge of the roof will be 2.5 m or even more.
- If a two-level attic floor scheme is created, then there must be at least 5 m between the floor and the ceiling. Attic rooms are called two-level, in which two rooms are placed one on top of the other, and a staircase is installed to connect them.
- When equipping the attic, you need to make sure that a sufficient amount of light penetrates into it. To achieve this goal, vertical or dormer windows are installed, cut directly into the ramp. The skylights are slightly higher, but if they are placed correctly, it is possible to ensure that sunlight penetrates into the attic throughout the day, thereby saving on electricity.
- The living space must be insulated with effective thermal insulation. Thermal insulation material is placed on the pediment and roof slopes to reduce heat loss during the heating season.
- It is worth not forgetting about the well-designed forced-type ventilation, which functions due to the convection effect. With the help of such ventilation, it is possible to raise the musty air up to the ridge of the roof and bring it out through the gaps outside the structure by means of aerators. In this case, the vacated space is filled with new fresh air. The continuous circulation of air flows gives the room a pleasant microclimate and eliminates the problems of dampness in the air and unpleasant odors due to heating of the roofing.
Try to use lightweight roof coverings when overlapping mansard roofs. It is better if it is ondulin, metal tiles or roll materials that allow you to easily overlap broken slopes. See also: "Variants of a mansard roof device - what to consider and how to build."
Mansard roofs will help to bring some zest and appeal to the design of the house, without resorting to high costs for additional living space.
Mansard roof - which type to choose
In country houses, it is very important to wisely use the available space and, if possible, expand them. One of the best solutions is a mansard-type roof. Such living space can really become a full-fledged part of your home. But in order for this to really be so, you need to decide which roof will be the best option for you and how it will be built.
Types of mansard roofs
The first thing to look for when building a house is the roofing system. There is a fairly large selection of roof options, but the following are the most popular nowadays:
- gable, which can be broken or gable
Of course, any species has both strengths and weaknesses. The simplest solution is symmetrical designs. They do not require complex miscalculations, and the construction of such a roof is easier in itself. But if you choose an asymmetrical roof, then you can get more usable space in your attic and a more attractive original design. Although the construction process in this case will be much more complicated.
Even at the stage of project development, it is necessary to calculate what will be the load on the walls and foundation of your house from the roofing structure. Climate features are also taken into account: the amount of precipitation during the year, temperature drops, wind, etc.
In all types of mansard roofs, the intersection line should be no more than 1.5 m from the floor. Otherwise, it will be rather an exploited attic. One of the advantages of attic roofs is the ability to install such a structure on almost any house - brick, wood, block.
In all types of mansard roofs, the intersection line should be no more than 1.5 m from the floor
With a competent approach to construction, your attic can be used for a variety of purposes: a nursery, a private office, a small gym, a bedroom, and so on.
It is this type of construction that allows you to get a spacious, functional and comfortable attic without much effort. In this case, the main elements of the structural frame are:
The most important thing to do when designing is to calculate the angle of inclination. If the slope is too small, then in winter the load on the roof can increase to a critical level due to the fact that the snow mass will collect on the surface and press on the roof and, as a result, on the entire structure of the house. Because of this, the structure can significantly deform or even collapse. But, if we compare all other types of attic roofs of private houses, then it is the pitched roof that is one of the simplest and most reliable options. This design also resists strong wind currents well.
If you really want your house to have a pitched roof, then you must make sure that its angle of inclination is at least 35 degrees. If there is an opportunity to make an angle of 45 degrees - use it. Thanks to such a slope, in winter, snow from the roof will simply roll off under its own weight, practically not lingering on the surface. Almost any roofing material can be used for a pitched roof. But keep in mind that both these materials and the angle of inclination will affect the total cost of the roof. Therefore, when choosing, properly compare your desires and financial capabilities.
As mentioned above, there are sloped and gable gable roofs. The simplest design is gable. If it is symmetrical, then there are practically no problems with its creation. In this case, deep calculations are not needed, so everything will cost you less, although such an attic may be inferior in area to a pitched roof. The standard gable roof is in the shape of a triangle.
Other types of roofs are significantly inferior to gable roofs in a number of characteristics:
- the ability to use inexpensive materials
- rather simple design
- no need for lifting equipment during construction.
The standard gable roof is an excellent option for houses that are no more than six meters wide. In this case, the angle of inclination usually varies within 45 degrees. But quite often the width of the house exceeds 6 meters. In this case, you can safely erect a roof with an angle of about 60 degrees, that is, more acute. Thus, there will be more usable space in the attic.
Asymmetrical roofs have also become popular in our time. But if you decide to do just that, then a special approach is required. Its main feature is the center of gravity shifted to the side, which requires special care and responsibility in calculations even at the design stage. But if you value the original look and want to discover new design possibilities, then this is a great option. This roof allows you to make a comfortable terrace.
The sloping roof of the attic is another widespread type of structure. In it, each slope consists of two sections with different angles of inclination. Standard angles: 60 degrees for the bottom slope, 30 degrees for the top. This design allows you to get quite a lot of free space for your own purposes. At the same time, the roof will not hold the snow mass on itself in winter.
The sloping roof of the attic is another widespread type of structure.
As with a symmetrical gable roof, a broken line is suitable when the width of your house does not exceed six meters. If the house is large, you will have to look for other options or approach the miscalculations and construction much more responsibly.
It is such a roof that makes it possible to get an almost full-fledged floor - functional and convenient. The design, it should be said, is more complicated here than in the above options. Therefore, it will take more time for construction, and materials with work will cost more.You will have to either independently or with the involvement of builders to develop an accurate diagram of the truss structure.
Hip roofs occupy a special place among the hipped structures.
Hip roofs occupy a special place among hipped structures, because they have a number of advantages:
- There are no vertical planes in the roof. Thanks to this, it can withstand even strong gusty winds without any problems. Such a roof will be the best option for everyone who lives in regions with windy weather, where hurricanes also occur.
- The frame at the hip roof is one of the toughest. This is ensured by the fact that the corner ribs converge tightly with the support ridge beam. This design avoids any deformation during operation.
- You can also make large overhangs that protect your walls from precipitation and, as a result, further damage due to adverse weather conditions
- Also, a hip roof is a rather laconic solution, because it makes it possible to make your private house squat. But the space in the attic itself will be quite enough.
You can also make large overhangs to protect your walls from precipitation.
But the hip roof also has a number of weaknesses:
- The first and foremost is cost. The design is much more complex than the others and, as a result, expensive
- Due to the fact that there are slopes not only from the long ends, but also from the short ones, part of the space is wasted
- Placing windows in such a roof is a rather difficult task, because the windows are placed directly into the roof itself.
If we talk about windows as an integral part of the attic roof, it should be noted that the best option is vertical windows. You will need a layout for all structural elements, but the windows will fit perfectly into the design of the house and perform their main functions: to let in fresh air and daylight inside the attic.
If desired, and with sufficient funds, you can also build a hip hip roof. This will significantly expand the usable space of the attic. But the design in this case will be an order of magnitude more complicated, which means that the materials should also be the best. Therefore, you will have to spend a little.
If desired and with sufficient funds, you can also build a hipped roof.
As you can see, the types of attic in your home can be quite diverse. When you are faced with the question of choice, consider what space you need for a comfortable home. A properly selected attic roof will also make your home more visually beautiful. Remember that you can install a mansard roof not only when a new house is being built, but also when renovating an old one. But at the same time, you will have to calculate what load the foundation of your house and walls can withstand. Only then will it be possible to make a choice.
In addition, remember that you are faced with the task of not only choosing what your roof will be like, but also choosing the materials from which it will consist. The entire rafter system is created from a bar with a different section, which depends on the possible loads and the total weight of the roof. The best roofing is one that uses lightweight and safe materials.
Don't forget that the attic is right under the roof. And despite the fact that warm air always rises, the room still loses heat faster. You will definitely need high-quality and durable insulation (ecowool, expanded polystyrene, etc.).
As you can see, mansard roof options allow you to get a wide variety of sizes and shapes of additional living space. Do not make spontaneous decisions, think over which of the options will be optimal in your case, and only after that get to work.
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Features of the construction of the attic on supports
Supports are used to distribute the load on the rafters and beams. They are installed either on the sides of the attic or in the center of the room. Supports are made of metal or wood.
After installation, during finishing, the support beams are usually decorated into columns.
Often, supports are used with long rafters, when the attic has a large area. The supports take on a mass of rafters and roofing material, so that the attic can be made 10-15 meters wide or more.
So, you can make an attic in an old house with your own hands, using the tips from this article.
At first, it is important to calculate the load of the attic room for the building, and then correctly assemble the rafter system.
After that, a hydro, vapor barrier, roofing material is installed and the finishing is performed.
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