Pros and cons of flat roof houses. Building a flat roof - a budget option for a reliable roof with your own hands

The choice of a particular design largely determines the possibility of using the attic as an additional living space, resolves the issue of the need for insulation and determines the type of roofing.

A flat roof is a specific option that does not allow you to equip the attic as a living space (due to its absence).

But it offers a lot of opportunities for using the territory as an auxiliary site, a place for placing equipment or as a private recreation area, isolated from the external space.

In this regard, a flat roof can provide many interesting possibilities, but its use has its limitations.

The main feature of a flat roof is an almost horizontal surface. such surfaces is low - up to 8 degrees, it is needed only to drain rain or melt water.

According to the conditions of the plane location, there is practically zero wind load (with the correct device without hanging edges) with maximum snow load.

Wherein, roof structure has a complex multilayer structure, which ensures the tightness of the coating and the working condition of the insulation.

The most favorable operating conditions for flat roofs:

Small amount of snow in winter. The most successful use is in regions with warm or little snowy winters, when removing snow from the roof is not difficult.
The strength of the wind does not have a significant effect on the roof, therefore, it is permissible to build such roofs in areas with strong or heavy winds.

For areas with cold and snowy winters, the use of flat roofs is only recommended. for small commercial buildings with a relatively small area.

The use of flat roofs on residential buildings is more common in southern regions, where the problem of high snow pressure in winter is absent.

Flat roof

The structure of the roofing pie

There is no specific, classic composition of a flat roof roofing pie. The structure of the layers most often based on the following factors:

The purpose of the roof;
Cover type;
Roofing material.

The decisive factor determining the composition of the roof from the very beginning of construction is the purpose of the roof. It depends on him what material is needed for the construction of the ceiling, how exactly it will be insulated, what is the optimal coating material in this case.

Warming of a flat roof from a soft roof is made from the outside, since this method is much more convenient and reliable in terms of the tightness of the cake.

The general technology of insulation looks like this:

Base (concrete, wooden floor);
vapor barrier film;
layer of insulation;
The top layer of waterproofing;
Roofing.

This is a general plan, in practice it is often supplemented or complicated in order to more reliably protect against water penetration or the formation of cold bridges.

roofing cake

One of the flat roof options is inverted roof. This is a relatively new kind of pie construction that takes into account the shortcomings of conventional options.

The fact is that a common problem with flat roofs is the seepage of water through the insulation into the ceiling and the appearance of stains and stains.

To eliminate this phenomenon, an inverted roof is used when a reliable waterproofing carpet (often multilayer) is installed between the ceiling and the insulation.

The composition of the pie is built like this:

overlap;
Waterproofing preparation layer - usually a building primer;
Waterproofing carpet;
Geotextile layer;
Insulation (optimally - extruded polystyrene foam);
The top layer of geotextile;
Ballast bulk layer of gravel.

On top of the ballast layer, if necessary, a hard coating can be laid to maintain a uniform thickness of the ballast and ease of movement.

Inverted roofing cake

Roof base - wood or concrete?

Wood or concrete can be used as the basis for a flat roof. Both options are acceptable, but not interchangeable.

So, wooden base is used for small buildings, most often for economic purposes.

If there is no heating, then such a roof is not insulated, a simple truss system is made and the roofing is laid on top. However, wooden floors are also used for residential buildings.

This is due to the desire to lighten the roof, remove excess load from the walls (for example, with the frame method of construction).

CAREFULLY!

This option imposes certain restrictions on the functionality of the roof, excluding the presence of heavy equipment on it, a large number of people, etc.

Often, for the roofs of residential buildings used, a concrete slab is used as the basis. Such an overlap has a number of significant advantages:

Reliability;
No noticeable deformation from loads;
The penetration of moisture into the material will not cause decay;
Finishing a concrete floor is easier than wood.

Since it is produced outside, the lower surface of the concrete floor (the ceiling of the upper floor) will be open, which allows the use of any available type of finish - from simple painting to the installation of a stretch ceiling.

If the ceiling is made of wood (beams), then the finishing should be done taking into account possible deformation - “sagging” of the ceiling from existing loads.

Photo of the foundations of the roof in section:

wooden base

concrete base

Flat roofs: arrangement of private houses

The composition of a roofing cake is never chosen at random. The main selection criterion is the general purpose of the roof:

Lightweight. A roof that serves only as protection from rain. It is mainly used for auxiliary buildings for household purposes;
Operated. Such a roof serves as a platform for accommodating various equipment, for arranging recreation areas, small greenhouses, swimming pools, etc.;
Green. On such a roof there is a lawn with grass, plants, etc. Serves as a mini-square for relaxation.

Depending on the purpose of the roof, the type of overlap is selected, which, in turn, largely determines the optimal type of roofing material. Therefore, the composition of the roofing cake may have its own individual characteristics.

So, for a flat roof of an outbuilding it will be enough:

Rafter;
crate;
Roofing (, metal profile, etc.).

Lightweight roof

For a used roof, which is used as a platform for installing solar panels, satellite TV dishes or other equipment, composition is much more complex.:

Concrete floor slab;
Cement screed forming a slope for water flow;
waterproofing layer;
Drainage material that removes water from under the upper layers;
insulation layer;
Geotextile layer;
Sand preparation layer;
Paving slabs.

In this case, paving slabs serve as an external coating, as a durable and cheap material.

ATTENTION!

At the same time, rain or melt water can quite easily penetrate into the insulation layer, so it must be resistant to moisture, impervious to water, or, alternatively, painlessly pass water to drain through the drainage layer to the drain.

exploited roof

Green roof pie chart:

Concrete floor slab;
Layer ;
Multilayer waterproofing carpet;
insulation;
. It consists of a separating layer of reinforced screed, a double layer of technoplastic (EPP and Green), and a geodrainage rolled layer;
Soil layer with plantings.

In this case, there is a multi-stage hydroprotection that reliably cuts off the insulation material from the upper soil layer. Such a cut-off, at first glance, is too complicated, necessary to guarantee the creation of a reliable barrier to water.

The soil is an active accumulator of moisture, which will surely seep into the lower layers, so the complexity of the composition of the cake is fully justified.

green roof

How to cover a flat roof

The material for covering a flat roof is selected based on its purpose.

Unused surfaces are most often covered with roofing felt with sealing joints with liquid bitumen..

Recently, a large number of similar materials with improved characteristics have appeared, which make it possible to more reliably protect the roofing pie.

Operating surfaces require a more rigid and durable coating. At the same time, the task of hermetic cut-off of the insulation from external influences is not removed, therefore, most often a sand-cement cushion and a working layer - paving slabs are laid on top of the soft roof.

Coating

Installation of an operated flat roof

How to make a flat roof? First of all, you need to decide on the main parameters - the type of roof, device, etc. Consider the option of installing an operated flat roof with a concrete floor and external drainage using gutters:

The surface of the overlap is covered with a layer of sloping concrete screed (decrease). To save concrete, a layer of gravel is first poured with a slope, after which a screed is laid on top. Since this stage refers to "wet" work, then it is recommended to cover the overlay surface with a layer of primer or similar material.
Laying vapor and waterproofing. As a material, various deposited films or rolled membranes can be used. Laying with an overlap, glue the joints with adhesive tape.
insulation layer. Either stone mineral wool or extruded polystyrene foam is used. Insulation is laid in several layers, at least 2 layers. This requirement is due to the need to exclude the penetration of cold through the cracks in the joints of the insulation.
over the insulating layer laying a layer of waterproofing.
Backfilling of the ballast layer - gravel, sand, etc.. The role of this layer is twofold: protection of the film coating and removal of water from melting snow or precipitation in the summer.
over the ballast layer if necessary, a layer of paving slabs can be laid for ease of walking on the surface. In this case, you will need an additional sandy preparatory layer, a direct substrate for tiles.

The specified sequence is one of the options; there are many similar methods that are equivalent in result, but differ in details.

The device of a flat roof, traditionally considered an accessory of auxiliary buildings, can be carried out in such a way that the roof surface turns into an additional platform that can be used for various needs.

Depending on the climatic conditions of the area, the surface of a flat roof is turned into a green lawn, into a technical area for placing equipment, into a recreation area.

All variants of the operated roof require careful arrangement and expensive materials.. The qualitative result directly depends on the qualifications of the people doing the work and on the financial capabilities of the owner of the house.

But do not forget that you can build a flat roof with your own hands.

Investments in an equipped used flat roof will be justified only in regions with short mild winters and low average monthly rainfall. All other issues are solvable and do not cause serious problems.

Waterproofing

Warming

Useful video

In this video you will learn what is the device of a flat roof made of welded materials:

In contact with

When building your home, building a roof is one of the most important tasks. We propose to discuss how a flat roof is made in a private house with your own hands from corrugated board, its installation, insulation and drainage, as well as the advantages and disadvantages of this type of roofing.

Design features of a flat roof

Modern private builders rarely use flat roofs to cover private buildings, dwellings, mainly these are surfaces that can be covered with a gazebo, the surface of a garage, a bathhouse and other utility rooms. Mainly a flat roof is used for multi-storey residential buildings, where, due to design features, it is impossible to build a gable roof.

Photo - Flat roof roofing pie

Projects of houses and cottages with a flat roof are distinguished by originality and eclecticism. In addition, you can equip a special roofing cake, thanks to which the lack of attic (inter-roofing) space will play into your hands. There are such types of flat roofs:

Photo - Flat roof waterproofing

There is also a flat combined roof - when the roof combines several of the listed types. For example, inversion and traditional.

pros flat roof:

Very simple design, there are no special principles for installing rafters, frames and other beams;
Easy calculation of roofing materials;
You can use the surface of such a roof as a foundation for installing various systems directly on the roof: satellite dishes, winter gardens, solar panels, etc.;
Smaller area, unlike a shed or attic (no need for wide overhangs).

But minuses flat non-attic roof are more significant:

Due to the lack of an angle of inclination, it often leaks. Shed, gable and other sloping types of roofs do an excellent job of independently draining water, but for a flat one you need to build a special drain;
Several times a year, a country house will need to be cleaned from the accumulation of foliage and snow on the roof;
Often the funnels of the internal drain freeze due to the lack of an attic.

But still, in view of economy, the disadvantages that a flat roof has are not very significant compared to its advantages.

Video: flat roof

How to choose a material for a flat roof

Properly selected roofing materials for a flat roof are half the success of the entire construction of a house. Of course, you can stop at a profiled sheet, but it is worth noting that in this case it is necessary to think about how snow removal and drainage will be carried out. The fact is that from the constant exposure to atmospheric precipitation, the metal coating can rust and go out of service earlier than the period declared by the manufacturers.

The roof covering must be perfectly resistant to moisture. Here will serve well:

Decking with a polymer coating;
Polycarbonate;
Slate;
Mastics.

Let's consider what material for a flat roof is more often used. Construction mastics most commonly used on residential buildings. These are special liquid coatings that are applied to the surface of the roof with a brush, and then solidify, forming an airtight solid substance that looks like rolled materials. They perfectly resist high temperatures - up to 70 degrees, but can crack at low temperatures - up to 25.

Photo - Flat roof

Polycarbonate is more reliable and beautiful than mastics, but it is much more expensive. Its main advantage is its external similarity with glass, so it can be used to create a stylish roof that will emphasize your financial condition. In addition, it is polycarbonate that is chosen for the design of residential buildings.

Slate previously used for any type of roof, regardless of its slopes. It is very heavy, so to install it, you need to carefully consider the frame and foundation of the building - so that the house does not “settle”. The load that is placed on the rafters by slate is perfectly compensated by its durability indicators: it can last up to 50 years in medium-aggressive environments with strong pressure and temperature drops. Now it can be replaced by aerated concrete, which is lighter.

Decking polymer coated is an almost ideal material for covering a flat roof. A dacha, a greenhouse and a house with such a surface may not be afraid of temperature extremes, ultra-low degree indicators, but a snow cushion is fatal for them. It is necessary to ensure that the metal is periodically cleaned of precipitation, so work out natural cleaning systems.

Photo - Flat roof made of corrugated board

More rarely, but still, a wooden flat roof is used. Its durability indicators are relatively low, but the tree will help protect the roofing material or the same mastics. Timber roofs are mainly used in complex design projects.

Flat roof installation

Consider how a flat exploited roof is installed on square houses, as well as how to insulate this type of coating.

A flat roof is a universal type of construction, it has an excellent combination of price and quality, but there are significant drawbacks in the form of a complex gutter system. When choosing such a roof, weigh all the advantages and disadvantages very well.

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Do-it-yourself flat roof - most often located on private low-rise buildings, as well as on garage buildings. This type of roofing device is ahead of its competitors. In our article, we will explain why.

Before we talk about how to make a flat roof, we note that the term "roof" and the term "roof" are not the same thing. The term "roof" refers to those elements that are located above the living quarters of the house. And the roof is a component of the roof, its top layer. It is he who protects the entire building from the effects of atmospheric influence. In these conditions it is very important to create a reliable roof of a country house.

Having familiarized yourself with the difference between the terms, we can state that a flat roof is ideal for a house with a small area. With an impressive roof area, it is recommended to work with the whole team.

Flat roof and its features

When working on a small house with a small roof area, you can safely do without assistants.

At the beginning of work, fasten wooden beams or steel beams to the bearing camps. With the help of them, you can reduce most of the mass of the roof, directing it to the main walls and foundation.

So, we found out that the main load on the beams is the weight of the roof. But besides this, there are other loads, such as:

The total weight of the roof and communication elements. As a rule, they are located in the attic or attached to the roof.
The weight of a person who is repairing a roof or roof. It can also install additional hardware.
Volume and mass of snow + cold winter wind pressure.

Read the advice of experts on the forums, look at the photos on the Internet - then you can make the right choice of load-bearing beams and avoid critical mistakes. Surely you will be interested in the article flat roof - the pros and cons.

If you want to get a reliable and safe flat roof, then choose only the right roofing (details: ""). Also important is the choice of related materials that can withstand heavy physical exertion, as well as the effects of natural disasters.

Don't forget to check all material specifications. To prevent negative consequences - conduct a thorough hydro- and vapor barrier.

Lay a "pie" of several materials on the plates (they must have different properties).
The first layer is a vapor barrier. Its function is to protect the insulation layer from moisture. As a material for vapor barrier, a polymer-bitumen film is used. At the same time, it is often reinforced with fiberglass, and then a flat roof is installed. Place the edges of the film on the verticals of the overlaps. It is very important to carefully and accurately close the seams, as well as to understand.
On top of the vapor barrier, lay the insulation. If expanded clay is used, fill it with a mass of concrete. When constructing a lightweight roof, a polymer insulation must be fixed directly to the vapor barrier.
Moisture insulation is the main layer for a roof without slopes. For the device of this element, you will need membrane or polymer-bitumen materials.

Do-it-yourself flat roof for cold rooms

There are buildings that do not have heating. These include sheds and gazebos. They are supposed to create a slope for water flow from the roof. To do this, you only need to equip the roof at the smallest angle.

When constructing a sloping flat roof, its supporting beams should be at a slight angle. Boards will be fixed on the beams. This will be a kind of basis for rolled roofing material (more details: "").

For the installation of a rolled carpet of roofing material, you will need a frame made of boards. For this, it is best to use thin wooden planks or steel strips. Fasten them along the slope. In this case, the step should be 70 cm. But you should not block the path of water flowing from the roof. The percentage of slope of such a roof is no more than 3%. In other words, it is 3 cm per linear meter of length.

Construction of flat roofs for warm rooms

Consider the nuances of equipping a flat roof for heated houses:

First of all, lay a layer of boards on the supporting beams, having previously completed. After this, the laying of the roofing or roofing material should be carried out. Their canvases should be placed according to the overlap method. In this case, the length should be 15 cm.
Expanded clay is laid on top of the roofing material (you can use slag or other material). Before filling the insulation, check that the slope is directed towards the flow of precipitation.
The third stage is the pouring of the insulation layer with cement. After preparing the screed, treat it with a bitumen primer.
Only a fully finished screed will be ready to accept rolled roofing material.

When studying flat roof construction, you will see for yourself that roofs with a large spacing between support beams require the participation of several people. It is advisable to invite professional craftsmen who will perform all the necessary work as soon as possible.

When fixing the support beams, the distance between them should be observed. It should be no more than 1 m.

The device of a flat roof made of monolithic concrete

The first step is to calculate the span of the roof. If it is 5 m, then beams of 15 cm are used. Speaking in professional building language, this is the “fifteenth I-beam”.

To create a monolithic roof, it is recommended to use concrete grade 250. When creating a concrete solution at the construction site, it is advisable to use a concrete mixer. Otherwise, you are unlikely to achieve the correct consistency of the solution. To obtain concrete for a flat roof, it is necessary to mix crushed stone with particles of 20 mm and cement, brand PC-400.

When calculating the components, adhere to the following rules: for eight buckets of crushed stone - three buckets of cement, 4 buckets of sand, and two buckets of water. If there is not enough water, you can add more, it is not critical.

Insulation of a flat roof with foam concrete, see the video:

Next, the boards are fastened to the lower beam shelves. Roofing material is laid on the dry surface of the boards. Then, a reinforced mesh of a periodic profile is laid on top. The diameter of this element should not be less than 1 cm. The size of the cells in this case is 20x20 cm.

In order not to repair a flat roof, the places where the mesh rods are laid are fixed with a tie wire. An option using glue is possible. Ultimately, the mesh should not slip when the screed is poured.

For complete coverage with concrete mortar, small pieces of crushed stone are usually laid out at the bottom of the grid. Due to this, a gap of 4 cm is left. It is necessary to distinguish between the grid and the roofing material layer. Filling is carried out in the openings between the beams. Recall that their thickness should be at least 15 cm.

After all the steps, the concrete is covered with a film of polyethylene. This is especially true if the work is carried out at high temperatures. By covering the surface, you will prevent the evaporation of moisture from the concrete solution. This, in turn, will protect the top layer from cracking.

Concrete must be under the film for at least three days. After completely drying the concrete mass, pour a layer of insulation. Don't forget about slopes. The next step is to create a screed and install a rolled carpet.

Insulating a flat roof

Today, a common phenomenon is the replacement of a flat roof with a pitched one. However, in favor of a flat roof is the fact that it can be insulated both from the outside and from the inside. And after it is completed.

Previously, solid slabs of thermal insulation were used for insulation. However, with this option, the roofing weight increased significantly. Having studied past experience, modern construction has moved away from this method of insulation. Today, most often flat roofs are insulated with basalt mineral wool. It's pretty light material. In addition, it boasts good thermal conductivity and moisture resistance.

Note that basalt mineral wool is not subject to combustion processes. In addition, it fully tolerates even the most negative influences of nature.

A few decades ago, all developers on a large scale converted their houses with flat roofs into pitched ones. This is due to the fact that the materials used when laying flat roofs did not meet the quality and did not allow adequately protecting the base from moisture. To date, roofing on flat roofs even have some advantage over slopes. You will learn how to build a house with a flat roof, and at the same time take into account all the pros and cons, in this article.

Pros and cons of flat roofs

In European countries, the creation of sports grounds, lawns or flower beds right on the roof of a country house has long been practiced. This saves usable living space. As for the CIS countries, they are not used to such things, until now, arranging something above their heads is considered a curiosity, but often there are people who have already adopted the experience of building from abroad and their houses are popular.

Of course, the appearance of a building with a flat roof is very primitive, but with a certain imagination, you can make it unique. Fortunately, the low cost of construction, durability, ease of installation and reliability of all structural elements allows you to come up with crazy projects.. As an example, this article offers photo materials of flat roofs, I hope thanks to them you will get some ideas for yourself for future construction. But first you should find out what are the pros and cons of this type of roof.

Advantages of flat roofs:

Low windage. In simple terms, neither a strong wind, nor even a hurricane can blow your roof off.
Low construction cost. This advantage is due to the fact that in construction you do not need bulky truss systems, therefore, saving on materials
Ease of installation. All work is carried out on the same plane, and you will agree that it is convenient
Snow cover is not something negative On the contrary, it performs the function of a kind of thermal insulation
Appears additional area which can be customized to suit your needs.

Disadvantages of a flat roof:

The need to design a quality drainage system
In cases where certain roofings are used, a device for heating them will be required
Clogging of drain pipes can lead to a large accumulation of water on the roof surface, so it is advisable to check this point every time after precipitation.

Types and classification of flat roofs for a frame house

All building structures are divided into types and subspecies. For example, the flat roof of a country house may or may not have attic space.

Such moments are selected purely individually, so let's talk about them.

For the purpose of the roof:

Operated. The formed area as a result of construction is occupied by some equipment
not exploited. The opposite of the first point. Nothing is provided on the surface, and in the winter season only snow lies on them. By the way, in some regions of the country, it is precisely because of the snow that the construction of flat roofs is impossible, since a very large amount of precipitation falls.

By design type:

With attic space. I hope you understand this very well and you know what an attic is. As a rule, these roofs are laid without a heat-insulating layer and do not require maintenance in the winter.
No attic. They also do not require any maintenance, but you will need to provide maximum surface waterproofing. This is due to the fact that the snow will melt due to the heating of the house, therefore, there will always be some moisture on the roof.

For protective layers:

Traditional. The roofing cake is arranged in such a way that a waterproofing layer is placed behind the insulation boards.
Inversion. Here everything is already somewhat different, and the waterproofing is protected by a heater

Paying attention to all the points described above, developers receive the highest quality and expediently created roof.

Building houses in construction can never look the same. In appearance, this is exactly what happens, but the materials are always slightly different from each other, and such differences can play a rather strong role in the construction of your comfort.

Some developers will find that the use of these materials is acceptable in this case, while for others the same work will turn out to be a mistake.

That is why the construction of houses with a flat roof is an individual lesson and compliance with the following rules will help you avoid embarrassment:

Design. At this stage, all the smallest details are worked out. It is worth noting that, despite the fact that the roof is flat, it must have a certain slope so that moisture does not accumulate on the surface, but gradually goes into the drainpipes. Such a slope, as a rule, is formed from the facade of the building
There are two ways to build such roofs. The first method involves the installation of the ceiling and the roof with a single monolithic slab, and with the second method, a gap is arranged between them to improve the heat-insulating layer, but at the same time complicates the diagnosis and repair of the roof in the future, and the use of the roof as an additional usable area becomes impossible
Foundation. If you are a little versed in construction, then you probably understand that the construction of powerful foundations for frame construction is not required. Here you can save and set the necessary parameters. It is better to work out the system of rafters in more detail, because they will have a hard time in a frame building with a flat roof
Wall construction. Ease of installation will allow you to finish the job very quickly. To do this, you will need to lay the harness on the foundation for future attachment to the floor. After that, bearing supports are mounted, which will transfer the load of the roof. And this process ends with sheathing and filling voids with insulating material
Finishing. Properly selected decorative cladding will help distinguish your home from an outbuilding. Here it is best to consult with experienced designers in order to give comfort a decent appearance.
Flat roof decking. Almost any material is suitable as a roof covering, but it is worth considering the design concept and high loads. From the article, you learned that a flat roof still has some slope, despite this, the material to be laid must withstand enormous loads, because in the winter period of the year, pressure will act on the rafter elements not only from the coating, but also from snow. The slope is set insignificant, but in the rainy regions of the country it can be more than 10 degrees, as for drier places, an angle of 5 degrees will be enough

The flat roof of a country house is mounted in just a few days, this is due to the fact that you do not have to work at different heights, everything happens in one plane, therefore, everything is simple and safe.

Lightweight flat roof. Features during its installation

In some regions of the country, there is the option of installing a lightweight flat roof. Such places, as a rule, have a very dry climate and precipitation is rare for them.

The construction of a building with a lightweight version of the roof is no different from the standard one until the moment when the supports are installed. Their choice requires a very careful approach. Here, all loads should be taken into account, and the higher they are, the larger the cross section of the beams should be used. As a rule, material with a cross section from 10x10cm to 15x15cm in increments of 0.5 - 1m is ideal for such construction.
The load-bearing beams are covered with boards, plywood or drywall. Layers of waterproofing and vapor barrier are laid on top of them, and special construction tape is used at the junctions of the strips of material. After that, the thermal insulation boards are laid. The most applicable materials for this are mineral wool or expanded polystyrene (styrofoam). All joints and cavities are filled with mounting foam. In cases where cotton wool is used, it is worth laying an additional vapor barrier so that moisture cannot penetrate inside the insulation, but always has a way out of it. This will make a one-sided membrane
Bituminous tiles or euroruberoid are most suitable as roofing.

The nuances of roofing with heavy materials

The use of solid types of coatings will lead to the fact that the mass of the entire building will have a decent value, but also thanks to them it will also be able to withstand the high pressure of precipitation and natural phenomena.

In this case, it is advisable to use not wood, but metal as a material for overlapping. As for the walls, their margin of safety should also be increased. The concrete screed must have a reinforced body.

As a positive effect, you will gain greater safety and a longer service life of the entire building compared to soft coatings.

As a conclusion, I want to say that a flat roof is very rare, but it has undeniable advantages over pitched ones. On their surface, you can arrange a sports ground or dot the lawn.

Also in European countries, they arrange entire greenhouses for rare plants, and you will agree that this is already quite exciting when you have one of the wonders of the world above your head - a hanging garden.