Drawings of a trapezoidal lucarna. What is lucarna? Dormer window on the roof - design, dimensions, varieties. Large skylight with pitched roof

dormer window on the roof there is nothing more than an architectural structure on a slope that performs certain functions. Another name for this element is lucarna (from the Latin lucerna - a lamp, the French spelling is lucarne). The frame of the lucarne is usually located in the same plane as the façade wall, and can often serve as its continuation.

Initially, such windows were conceived as a way to ventilate the space under the roof. But gradually they became important element architecture, enlivening the overall perception. At a time when attics began to be rebuilt into residential attics, lucarnes became a source of natural light.

Types of dormer windows

The main types of dormer windows that can be found are presented in the following table:

gable	Shed
Shed	hip
flat french	Arched with glazing of the entire opening
triangular	Arched
Arched	built-in
With side walls and pediment outside the facade	With side walls and a pediment in the plane of the facade

Based on the main types, we highlight the most common:

Lucarna with flat roof . For such a window, a drain is provided, so it is made with a roof slope of 5 to 15 °.
Quadrangular window with pitched roof . The main difference with the previous version is that it has an inclination angle of 15° and above. The roof of such lucarnes can be rectangular, end or in the form of a trapezoid.
gable lucarne. In Germany, such a window was called a "dwarf's house".
triangular dormer window.
semicircular window. It has various names: “frog mouth”, “ bat”, “bull's eye”, “pike window”, the difference of which lies mainly in the degree of smoothness of the roof wave. "Bat" - has a smooth wave, "bull's eye" - has a steeper wave and an oval window. The curved shape of the side walls allows you to harmoniously fit into the roof and give the whole building a special, unusual appearance.

Let's consider each type in more detail.

Semicircular dormer window

Let's start with a more time-consuming option, a semicircular lucarne. "Bull's eye" is stylish implementation, which can significantly increase the cost of work and get the least amount of daylight in the attic or attic room. On the other side of the scale - the absence of dead corners where snow could accumulate, and good stock rain water. The second main advantage is an attractive appearance. Bullish is mounted very rarely, so uniqueness is guaranteed. This roof decoration looks very beautiful, harmonious and functional.

Making a semi-circular variant greatly increases the overall cost of making a roof. This is due to additional costs for design, work of roofers and the purchase of special materials. The custom-shaped windows used are also more expensive than standard ones.

Lucarna bull's eye

The design of such a dormer window in the roof requires careful attention to detail. It is important to maintain proportions.

How to make a drawing? First of all, you need to set the length and height of the opening of the lucarne (segments ac- half length and bc). from point a a straight line is drawn perpendicular to the base and a segment is marked on it ad = ac. around the dot d draw a circle with a radius ad. On the segment ab the point of intersection with the circle is marked ( e). Next, draw a straight line from the point d through a point e to the point of intersection with the line on which the segment is located bc. Intersection point - f. Around this point, the next circle is drawn with a radius fe. tracing the curve aeb you can see the outline of a bull's eye. The other part looks similar.

The construction of the "bull's eye" is started only after the complete assembly of the truss structure. Then it is removed from it necessary elements and wooden circles are installed (structural elements used to give it an arched shape). In this case, it is the cornice board of a semicircular dormer window. The structure of the "bull's eye" slope is formed by spacer bars, on the one hand attached to the horizontal bars between the rafters, and on the other hand resting on the gable wall. Next, the crate and the counter-crate are mounted - the basis for the finishing coating.

Two options for the bull's eye design:

The design of curvilinear forms - circled.

Curvilinear elements are made by separate templates. The upper part of the structure is covered with rigid sheathing made of flexible plywood, roofing paper and fastens the curvilinear elements of the trusses. Jumpers are installed in places of the cut rafters, transferring the load to neighboring rafters.

Tent construction.

The front wall of the lucarne is made in the same way as in the previous version of the circle. Further, rafters are laid from the lintel to the beam.

For a semicircular window, it is necessary to choose a roofing material that will evenly cover curved surfaces. Coatings made of small elements, such as slate and even straw, will be optimal. You can also use ceramic slot tiles. But, it will require more during installation highly qualified and skill. The number of shingles in one row should be the same as below it. Therefore, you need to choose the right packing density in different areas.

Single dormer window

The simplest and most common form of a lucarne is a shed roof window. In the classic version, the window and the roof above it are rectangular. There are options when the top or end wall is made in the form of a trapezoid. For these structures, it is necessary that the angle of inclination of the main roof be large enough. As a rule, the roofs of dormer windows are covered with the same material as the main roof. Using tiles, it is recommended to make the upper adjoining of the window through one or two rows of tiles from the ridge. This will give a more balanced appearance and improve protection against rainwater intrusion.

Dormer window with pitched roof

One of the varieties of the considered type is a dormer window with a flat roof (with a slope of 5 - 15 °). Its main task is to pass maximum amount light and air into the room. Drainage is carried out using a gutter.

For the first time, such lucarnes began to appear in the ancient cities of Germany for the banal reason of overpopulation. People, in order to get additional living space, began to use the reserves of the roof. A lucarna with gable roof provided the largest number space and light. In addition, they significantly change appearance the entire building in better side. Over time, lucarnes, along with balconies, bay windows, turrets and roof decorations, acquired great architectural significance.

For the form in question, there are about seven different names used in different parts Germany: "saddle-shaped", "pitched", "roof house", "Frisian", "house for the gnome", "lucarne". These structures can be found on many ancient buildings and architectural monuments. In Germany, there are laws to protect the architectural appearance of the city, and when reconstructing buildings, the developer is obliged to recreate the appearance of the skylight.

Dormer window with pitched roof

Execution variations in various styles the following:

With or without a ledge.
With or without pediment.
With or without gutters.

The roof of such a window is most often made of the same material as the main one. Side and gable walls can be finished various materials(slate, wood, plaster). Perfect option, gable lucarne has one window opening. Horizontal design, consisting of several windows, looks too wide and cumbersome. It is also worth considering that the angle of inclination of the rafters of the lucarne should be comparable to the angle of inclination of the main roof.

Lucarna with hip roof- This is one of the varieties of structures with a gable roof. Its front slope is usually located at the same angle as the main roof, which creates a more elegant look. This saves usable space. It is preferable to cover such lucarnes with metal, however, the use of ceramics and slate is not excluded. This type typical of the northern regions of Germany, where hip roofs are very common in architecture.

triangular dormer window

Small triangular or, as they are also called, "acute-angled" auditory openings were originally used for ventilation or as small light sources for the attic space on pitched roofs. Triangular lucarnes can often be found on historic buildings. When designing them, it is important that they are not too big or too small to fit seamlessly into the main concept. The angle of inclination should be approximately the same as the angle of inclination of the main roof. The main task of the triangular lucarne is to let as much air and light into the attic as possible, while creating additional space is not a priority. The advantage is that it can be installed at a higher level.

triangular dormer window

Having considered the main types of lucarnes, we highlight that there are no strict design rules. Their location and size depend on the individual preferences of the designer, current innovations in architecture. It is very important to decide what function the dormer window on the roof will perform - decorative or practical. In any case, the design should look harmonious in the general plan of the building, not be too close to the ridge or eaves of the roof, as well as to the gables (sides). Need to endure minimum distance between two windows - 0.8 m. A smaller distance complicates the laying of the roofing and contributes to the formation of snow bags.

Lucarna gives an expressive appearance to the roof of the building and allows you to illuminate the attic room in the daytime. Consider the features of the construction of this structure.

Lucarna (also called a dormer window) - a superstructure on a roof slope, in the front part of which a vertical window is provided. Lucarne is a decoration of the building, as well as a way to illuminate the attic and increase the volume of its space, since the roof of the lucarne is located above the slope of the main roof. Lucarna is an alternative to a roof window (or a combination of such windows), having a number of advantages and disadvantages in comparison with it. She is more interested in architectural plan, besides, a vertical window can be opened to ventilate the room at any time of the year, while a roof window built into the roof can have snow in winter, which prevents it from opening and prevents light from entering the room. At the same time, the vertical window of the lucarne does not illuminate the room as evenly as the inclined one. attic addition the same size, since the side walls and the roof of the lucarne narrow the light flux. Of course, the degree of illumination of the attic with a lucarne will depend on many factors, including the size of the window, the slope of the main roof and the method of sloping, but in any case there will be more darkened areas in the room than when using a dormer window. In addition, it is much easier to build a dormer window into the roof than a lucarne. It should be noted that its construction involves many structurally complex units, so the lucarne should be built on the basis of a detailed project, trusting the installation only to highly qualified specialists.

Design features

In most cases, the walls of the lucarne are made in the form of a frame made of wooden beams fixed on the truss structure of the roof of the building. The width of the lucarne, as a rule, corresponds to several inter-rafter spans, which means that its device involves a gap in the truss system. In order for the roof to retain the necessary bearing capacity, in the lucarne zone it is necessary to strengthen it in one way or another, which is chosen by the design organization based on information about the slope length, roof slope, rafter pitch, lucarne load, etc. Often provide additional vertical racks. If the layout of the attic does not allow the presence of such racks, then reinforced unsupported runs are installed (for example, in the form of double rafter legs or beams made of glued wood) and the side walls of the lucarne are supported on them. wooden frame the walls are filled with insulation - usually stone or glass fiber slabs, which are placed at a distance between the frame elements. In places where the lucarne frame adjoins the rafters, it is necessary to use trimmed plates, carefully sealing them during installation. According to a number of experts, this is a problem node in the design of the lucarne. Even with quality performance installation work gaps between the slabs and the wooden frame are not excluded, which is fraught with freezing of the walls of the lucarne in these areas. Moreover, the use of alternative materials capable of creating a continuous heat-insulating layer (for example, sprayed polyurethane foam or blown ecowool) is not economically justified if the main roof is insulated with stone or glass fiber slabs.

From the inside of the room, the fibrous insulation is covered with a vapor barrier film (fixing it with staples or nails to the rafters), on top of which the base for finishing is fixed, and then the finish itself. The vapor barrier is laid with an overlap of sheets of at least 100 mm, the places of overlaps and junctions of the film are sealed with special materials (one- and two-sided tapes, adhesives, pastes). From the side of the street, the thermal insulation is covered with a hydro-windproof membrane (it is also fixed with staples or nails), then a counter-lattice is usually installed, and then a substructure for exterior finish and the decoration itself. The counter-lattice allows you to provide a ventilation gap of 30-50 mm. By design, the roof of the lucarne in most cases does not differ from the main roof of the building and also involves a layer of insulation between the rafters, vapor barrier, hydro-wind protection, a ventilation gap formed by a counter-lattice, a crate (solid or step), on top of which the roof is laid. Vapor barrier and ventilation gap - measures necessary to protect the insulation and wooden elements from moisture due to the condensation of water vapor, tending from the attic towards the street. Important question when arranging the walls of a lucarne: how to organize the inflow and exhaust of air from the ventilation gap? One of the options is to connect the ventilation ducts in the walls of the lucarne with the ventilation ducts of the slope located under it, as well as with the ventilation ducts in the roof of the lucarne. Then the air will enter under the roof on the overhang of its cornice, move along the ventilation gaps and be removed either through a ventilated ridge on the roof of the lucarne, or - if it is not ventilated - through the ridge of the main roof, to which air from the roof of the lucarne should flow freely. (For this, in the design of the roof of the lucarne, in particular, gaps in the line of bars of the counter-lattice are provided so that air can freely penetrate from one inter-rafter span to another.) Recall that the air flow under the roof of the lucarne is carried out through the gaps on the overhang of its eaves or holes in its pediment . If lucarna small size, and in the attic is not supposed to be a room with high humidity, then, according to some experts, it is possible to do without ventilation of its design at all, subject to high-quality insulation and the creation of a reliable vapor barrier. We also note this point: the lucarne itself is an obstacle to the movement of air in the ventilation gap of the main roof, and therefore, to enhance its inflow and exhaust, additional ventilation elements are installed on the roof slope (aerators, ventilation tiles, etc.). They are placed in front of the lucarne and after it. The more lucarens on the roof, the more difficult it is to achieve full ventilation of its structure.

Wooden frame.
Thermal insulation layer.
Vapor barrier.
Internal lining.
Hydrowind protection.
Counter-lattice.
Lathing.
External cladding

The roofs of lucarenes are distinguished by a variety of shapes. They are single, gable, gable hip (with triangular slopes), semicircular, with a curved surface (they are called "bat", "bull's eye"), etc. Depending on the architect's intention, the roof of the lucarne can be covered with both the same roofing material, as the main roof, and others. However, difficulties may arise in the arrangement of the roof of the lucaren. So, it is often problematic to use large-format or high-profile materials - ceramic and metal tiles (ordinary or composite), corrugated bitumen or asbestos-cement sheets, etc. It is more convenient to use coatings laid in a seam way (copper, zinc-titanium), as well as materials in the form of low-profile or flat tiles - ceramic or cement-sand tiles (in particular, "beaver tail"), slate, flexible tiles, piece elements made of copper or zinc-titanium (rhombuses, rectangles, plates in the form of "beaver tail"), etc. When installing the roof, special care should be taken to connect the lucarne cover to the main roof cover. So, if the roof of the lucarna is gable, then two valleys appear at the place where its slopes converge with the roof of the building. It is important to ensure the tightness of the roof both in the valley itself and at the junction of the lower edge of the valley with the slope of the main roof, as well as in the area where the roof adjoins the walls of the lucarne (using various solutions for this depending on the type roofing material: e.g. in case of ceramic or cement-sand tiles- grooves made of painted aluminum or galvanized steel, corrugated tapes made of aluminium, lead, copper, clamping metal strips of a special profile, etc.). When there are several lucarnes close to each other on the roof, large snow “pockets” form between them and the risk of leaks under the roof increases with the capillary rise of melt water at the junction of the lucarne to the roof of the building.

Finishing the lucarna from the inside is also nothing complicated - again, any improvised materials left after finishing attic - the same drywall (you can read about finishing the attic with drywall with your own hands)

The outer surface is usually also finished with the same materials that finished the main facade of the house - wood, all kinds of tiles, metal sheets, .

Lucarnes are rarely plastered.

The roof of the lucarne, whatever it is made, gable or single, also falls under general rule- the same material as the rest of the roof area, unless of course there is a task to distinguish it from the background of the roof.

Lucarne ventilation - how to do it right

Lucarne ventilation occurs due to ventilated gaps, and its purpose is exactly the same as that of the ventilation device in the same attic - the removal of moisture from its structure.

The gap can be either one or several. If there are, for example, two gaps, then the first one is made between the mineral wool and the film (or a continuous flooring covered with roofing material, as mentioned above). The second is done between the roof covering and the roofing film. This is the most successful location - with it one will dry the heat-insulating layer, the other will help to evaporate moisture from the bottom side.

But if the roof covering is made of flat coverings ( shingles, roofing material, sheets) then they do not leave gaps under them. Do not leave them even when using a film with high performance vapor permeability (not less than 1000 g per m2 per day).

If the roof device in the lucarne is gable, then the air will penetrate into it into the holes between the counter-rails and rafters and flow upward, going back into the holes in the ridge.

If the lucarne is single-pitched, then gaps in the amount of 2 pieces are made where the slope ends, that is, at the very ridge of the roof. With such a design of the lucarne, air enters the space between the counter-rails and rafters and, having passed through the ventilation gap, will also exit at the very ridge of the main roof.

And if, for example, the roof surface of the lucarne is located on the roof slope, then the beam (frontal) can block the ventilation. In this case, you will have to make a gap right under the roof.

The device and design of the lucarne in the drawings

1. The design of a small hatch placed between two adjacent rafters

1. ridge beam of the main roof of the house

2. lucarna roof rafters with a section of 6 x 18 cm (spiders)

3. main roof rafters

4. 6 x 18 cm spacer boards provide rigidity

5. Mauerlat

6. racks with a section of 8 x 10 cm, forming the frame of the side walls of the lucarne

7. wooden beam(lintel above window)

2. Large lucarne with a gable roof

1. ridge beam with a section of 6 x 10 cm of the roof of the lucarna

2. rafters with a section of 6 x 10 cm of the roof of the lucarna

3. run with a section of 8x12 cm above the racks of the walls of the lucarne

4. Frontal beams. When the width of the lucarne does not exceed the triple pitch of the rafters, two rafters are cut out that fall into the location of the lucarne. The shortened rafters are intercepted by two frontal beams with a section of 15 x 18 cm

5. double rafters on which the construction of the lucarna rests. Double rafters have more bearing capacity than single

6. main roof rafters

7. pillars with a section of 12 × 12 cm of the structure of the frame of the side walls of the lucarne

8. wooden beam (lintel above the window)

3. Large lucarne with a shed roof

1. ridge beam of the roof of the house, on which the upper ends of its rafters rest

2. run bed, laid on the masonry (or ceiling). The racks of the frame of the side walls of the lucarna rest on it.

4. Way of laying roofing film strips

Film strips are laid horizontally, as in the rest of the roof. Lay them from the bottom towards the ridge. The edges of the strips are laid one on top of the other with an overlap of 10 to 20 cm.

1. Skate, not covered with foil. AT gable roofs near the skates arrange holes for air to escape from ventilation gaps in slopes. Holes must not be covered with foil, so the insulation must end at a distance of 5 cm from the ridge

2. the lower strip of the film, bent over the cornice overhang

3. an additional strip of film with a width of at least 30 cm, which ensures the tightness of the joint between the roof slope and the roof slopes of the lucarne. Film strips protecting roof slopes must cover this strip

4. film folded onto the side wall of the lucarne; the size of its bend is 15-20 cm

5. the edge of the film of the main roof is bent onto the wall of the lucarne to a height of 15-20 cm

6. the film on the walls of the lucarne performs the function of windproofing

5. Do-it-yourself thermal insulation and finishing of the lucarne

1.	Gypsum board interior cladding
2.	Mineral wool about 12 cm thick - thermal insulation of the walls of the lucarne
3.	Wooden frame, reinforced on the racks of the walls of the lucarna. A vapor barrier film and drywall plates are attached to it
4.	An additional layer of mineral wool, approximately 2 cm thick, laid between the timber frame bars to which the drywall boards are attached
5.	The vapor barrier film protects the mineral wool from moisture that can penetrate from the side of the heated room and reduce it. thermal insulation properties. The film must be laid with joint sealing
6.	Protective steel apron
7.	Wind insulation of the walls of the lucarna from the roofing film
8.	A wooden frame, reinforced on the racks of the lucarne, boards of the outer cladding of the walls of the lucarne are attached to it
9.	wood paneling
10.	Roofing film. A film with increased vapor permeability can be laid directly on the insulation. Otherwise, there must be a ventilated gap 2 cm wide between it and the thermal insulation.
11 a.	Board eaves overhang
11 b.	Lathing bars with a section of 4 x 5 cm. They carry the roofing; stacked in increments of 30 cm
12.	Counter rails with a section of 2.5 x 4 cm, nailed to the roof rafters of the lucarne through the roofing film
13	Thermal insulation of the lucarna roof from two layers of mineral wool. Its total thickness is 22-25 cm. One layer is laid between the rafters, and the second - between the frame profiles false ceiling. Warming can be done with mats or mineral wool slabs. They are joined very tightly so that there are no gaps between them.
14	Hangers of false ceiling profiles fixed on the roof rafters of the lucarne
15.	Suspended ceiling profiles. A vapor barrier film and gypsum boards are attached to them. Distance between profiles - 40-50 cm

Despite the fact that skylights were invented to illuminate the attic, lucarnes are still designed quite often, especially in houses made in the traditional architectural style. In terms of design, this is not the most difficult element to complete. Therefore, it makes sense to familiarize yourself with the different possible solutions.

Lucarna- this is the view wooden superstructure on the roof, in which the window is placed vertically. Depending on its width, an opening of a certain size is made in the plane of the roof slope. This, in turn, suggests various ways its implementation.

The first way is between the rafters

This is the easiest way to make a lucarna because you don't need to change load-bearing structure roofs. It is used in cases where the width of the lucarne may be less than the distance between the rafters. This means that the window will most often occupy the entire front surface of the lucarne, and its width will not be too large - usually 60 or 90 cm. This window size usually does not provide enough light in the attic, and therefore several small lucarnes are often designed, located nearby.

The design of the lucarne, which fits between the rafters, is exceptionally simple, since its walls are just a few boards nailed to the joists at the top, that is, shortened rafters (in this case, beams that form a ceiling above the lucarne), and below to the rafters roofs, between which, in fact, it is arranged. Sufficient will be boards 38 mm thick and 10 or 14 cm wide, arranged in 60 cm increments, as well as in the frame wooden house. Such a structure is so light that it is often not necessary to use thicker or double rafters to support it.

An excellent way to ensure the rigidity of the lucarna frame is to sheathe it from the outside with moisture-resistant plywood (at least 9 mm thick, preferably 12 mm) or OSB boards (at least 12-15 mm thick).

The second way is on reinforced rafters

A room with a hatch will be comfortable if its width is more than half the length of the wall on which it is located, since in this case it is possible to place two windows (or one large one) so that daylight penetrates into almost every corner. In addition, this device method allows you to significantly increase the area in the attic, where you can stand at full height under the slopes (that is, where the height of the room is more than 190 cm). But such a large width of the lucarne (usually exceeding 180 cm) is associated with significant changes in the design of the roof due to the fact that one or two rafters will have to be cut and replaced.

It is also mandatory to strengthen the extreme rafters - as a rule, by doubling them. The design of such a lucarne is similar to the previous type - with the only difference that the roof usually has two slopes, and elongated crossbars of the roof structure are often used for the installation of a false ceiling. The design of the lucarne can be made in accordance with the principles of construction frame house from boards 38 mm thick and 10, 14 cm wide, or traditional way, using classic carpentry and carpentry connections, from beams with a minimum thickness of 5 cm.

The third way on wooden walls

With lucarnes wider than the triple pitch of the rafters, it is imperative to carry out calculations and design a structure that reinforces the roof structure. Sometimes it is enough just to replace and strengthen the rafter leg, but sometimes additional racks and runs may also be needed. Therefore, each such case must be considered individually. In the process of working on the project, the decision on this is made by the designer.

The design of the lucarne should not additionally load the roof structure, and therefore the most the best option- if it is self-supporting. Highly good decision is the device of short walls, on which, at least in part, the roof of the lucarne will rest. Side walls lucarnes (frame, from boards 38 x 100 mm) and the roof structure must be separated so that the load from the roof cannot be transferred directly to the ceiling.

It is recommended that the roof of the lucarna be made single-pitched, reaching the ridge itself, since with such a solution it will be the easiest to perform and the most correct method in terms of design. But such a solution is not always possible, since it depends on many factors: the size of the roof, the angle of inclination of the slopes, the material of the roofing, architectural style at home, etc.

Lucarna isolation

The most important is the thermal insulation of the lucarne, made of mineral wool, but you will need, among other things, steam and wind-proof films. mineral wool stack: for insulation of the walls of the lucarne - with a layer of at least 10 cm thick, for roof insulation - it is better more, up to 20-25 cm. Strengthening the vapor barrier! to the design of the lucarna with inside, at the same time highly vapor-permeable windproof insulation - on the outside (on plywood sheathing). Then the thermal insulation will be between them and will be reliably protected from getting wet. Various connections of insulating films and sheet metal elements of the roof are made in the same way as on the rest of the roof. For their specialist correct installation won't be a problem. ■

The dormer window is nothing but the most normal window located on the roof of the house. Each of us can see it in the nearest private house with an attic, which is why it is called a dormer window in the common people. But this modern name not suitable for windows present on buildings and cathedrals built in past centuries. They are the progenitors of modern such windows. And they called them an interesting word - lucarne.

Dormer photo

Lucarna: what is it?

A dormer or a lucarne is the same thing, but they are separated by a time frame. Lucarne was widely used in the architecture of the 19th-20th centuries, but it is known that it began to be used as early as the 15th century in England on roofs with a gabled structure. Lucarna has its distinctive features- this is a superstructure on the roof of the house, in the front part of which a window was installed. The facade itself was decorated with lush stucco and was the hallmark of the whole house. Later, this unique architectural element began to be used on the roofs of rich houses and seemed to signal the status of its owners.

Lucarne window photo

The word lucarne is French (lucarne), but has a Latin origin from the word lux - light. The practical significance of the design: at that time it was the only way to provide lighting for the attic, if we exclude torches and candles.

Lucarna photo

Dormer window: why is it called that and what is it for?

A dormer window is already the domestic name for a window on the roof, it is designed less pompously and is more likely to have a practical meaning than an aesthetic one. There are two versions of why this window was called that:

First version: earlier the word "hearing" had a slightly different meaning and meant an opening, an opening. Which explains the purpose of such a window - lighting natural light and room ventilation.

Second version is directly related to the name of the master Slukhov, who during the reign of Alexander I managed the work on the construction of the roof on the Moscow Manege. According to this version, the roof of the building was originally built without a ventilation system, which led to its deformation under the influence of external natural conditions. Later, when the tsar himself found out about this, Rumors soon corrected the situation by building such windows, which were named after him.

Dormer photo

Dormer window on the roof photo

Dormer window on the roof: shape and design features

The traditional dormer window with the whole structure, when viewed from the side, resembles a house. After all, it has exactly its shape, so the lucarne performs not only the function of lighting and ventilation, but also increases the space in the attic. In addition, it is much easier to open such windows, since hinged frames are used for them, and not sliding ones, as with modern skylights installed in the roof plane. Therefore, they are called vertical dormer windows.

Dormer window on the roof photo

Such a lucarne window can be located in any part of the roof modern home, it doesn’t matter if it’s the main plane or the end. Its size and shape are also determined by the design features of the roof and the style of the exterior of the whole house. The height of the roof and the area of the attic are also taken into account. And of course they are not built on roofs with a small angle of inclination.

roof window

Another type of lucarni is a recessed window into the superstructure structure. This is usually done on big windows for the construction of a balcony. The only disadvantage of this design is that it does not increase the living space. Therefore, it is relevant only in the attic of a large area.

Lucarna photo

The dormer window can also be made in the plane of the roof, which gives them the right to call them skylights. They are good because they do not form an additional structure on the roof, which in turn facilitates its cleaning from snow in winter period. Also, such windows increase the degree of illumination of the attic by exactly half. Therefore, they are not recommended to arrange for sunny side roofs, but in the shadow they are very welcome. But it is worth saying that such windows require good waterproofing with a precipitation drainage system and, of course, are supplied with no less high-quality thermal insulation.

Roof window photo

It is also worth saying that lucarne windows can have the most different shape, in addition to traditional squares and rectangles, in architecture you can find them in a triangular shape, polygonal, round and oval. This diversity is due to the peculiarities of the exterior style.

Lucarna on the roof

Dormer windows or lucarne windows have firmly entered the architecture of suburban private construction. It is worth saying that they can be built already on the erected house, you only need to change the design truss system. Well, when erecting them, it is worthwhile to strictly focus on the features of the roof and, in general, the entire architecture of the building is taken into account.