Insulation of the roof from the inside if the roof is already covered

Roof arrangement - This is one of the most important stages in the renovation or construction of a private house. Improper design can cause accumulation of sediment and uneven load distribution, which in turn will lead to damage to the coating and failure of the entire structure. Roof elements laid in violation of the technology will allow moisture to pass through, and the attic space that is not insulated from the inside will allow cold air to pass through. It is not possible to fully exploit and live in such conditions throughout the year. In this article we will tell you how to properly insulate a roof from the inside, using all possible methods, and also provide practical advice from roofing professionals

Roof insulation is a responsible process

Factors that affect the roof

Any structure that is used as housing must meet certain standards and requirements. Only if they are followed will life in the house be comfortable and peaceful . Every detail is important - the correct laying of the foundation, the construction of walls, the laying of communications and the construction of the roof. The choice of roofing depends on the weight that will put pressure on the supporting structures of the house, the time and cost of installation work. In addition, an equally important step in arranging the roof is its insulation from the inside. It will not only protect the premises from the effects of external cold air masses , but will also act as a good sound insulator.

The roof must withstand freezing temperatures and a layer of snow

In different climatic zones, roofing elements are affected by many factors. The following natural phenomena correspond to our latitudes:

rain;
hail;
excessive ultraviolet radiation from the Sun;
snow;
strong gusts of wind;
icing, etc.

In order to withstand these disasters, the roof structure must be well assembled and covered with sufficiently durable roofing materials.

A typical private house is a structure that usually includes a main floor (one or two) and an attic. If the latter is used for housing, it is built in the form of an attic. It has been proven that with an uninsulated roof, in the cold season, up to 15-20% of the heat from the room is lost through the ceiling. This entails the need to increase heating and, as a result, increased energy bills.

Heat is lost through an uninsulated roof

The peculiarity of the space under the roof is not only in its geometric component, but also in the method of distribution of thermal energy. In summer it is hotter here than in other rooms, and in winter, on the contrary, it is colder. To create a comfortable microclimate inside and maintain optimal temperature, experts recommend creating a multi-layer “pie” from various materials. It usually includes a waterproofing layer, vapor barrier and insulation.

Schematic representation of the roofing “pie”

Interesting to know! With large heat losses through the roof, in winter the snow cover on it begins to melt, forming a crust of ice. With minimal, even technologically advanced, holes in the roof, there is a possibility of leakage.

Video description

In this video, see an example of how the floor of a cold attic is insulated:
Almost all of the above materials are suitable for this. The only thing you need to pay attention to is fire safety. For example, in houses with stove heating, at the point of contact between the pipe and the ceiling, it is better to use non-flammable insulation - mineral wool or penoplex.

Insulated attic

In a private house there is often a need to have insulated non-residential premises. The space between the roofing system and the ceiling is sometimes the best solution to this problem. In this case, similar methods used for the option with attic insulation are suitable. Both slopes and gables need to be insulated. The only difference is in the choice of materials. For the attic, the requirements are somewhat relaxed - since the premises are non-residential.

Flat roof

Insulating a flat roof from the inside is quite problematic. Basically, this procedure is performed externally. However, if the roof is already erected, there is no choice. In this case, dense slab materials are suitable, allowing them to be fastened from bottom to top using special fasteners. As an option, you can use spray foam insulation.

Processes taking place under the roof

In order to properly insulate a house and make its roof a full-fledged protective barrier from the cold, it is necessary to choose the material wisely. Usually it is selected based on the nature of the processes occurring in the attic space. The most significant include:

Moisture exchange is a phenomenon that arises directly from human activity (showering, cooking), breathing, body evaporation, etc. The vapors that appear in the room slowly rise upward, condensing moisture particles that are removed through the roof. When the roof is well insulated, humidity levels remain normal , and excess moisture, along with odors, is removed by properly equipped ventilation.
Heat exchange is a process that occurs due to the difference in temperature in the living space and outside. If attic floors are not insulated, a significant portion of the heat escapes through the roof. The function of insulation is to resist this and maintain optimal temperature values inside residential premises. Thermal insulation material has a porous structure. This prevents the entry of cold masses and the loss of warm air from the rooms, which in turn eliminates the need to unnecessarily heat them.

Vapors are created in the process of life

A layer of hydro- and vapor barrier prevents the appearance of condensation , which occurs at the point of contact between warm and cold air flows (dew point). Therefore, it is laid together with a layer of insulation, helping the latter to maintain functionality and appearance. Properly organized insulation increases the service life of the structure several times and minimizes the need to carry out annual repair and restoration work.

Is it worth insulating the roof of a house?

Whether you choose to insulate the roof of your house or abstain is up to you, but this type of work implies the following advantages:

reduction of heat losses by approximately 15%. And if we take into account the regular rise in energy prices, then insulating the roof is a significant saving in energy resources, as well as finances;
increase in living space. When the roof is insulated, the building acquires additional premises, but only on the condition that it is done accordingly;
reduction in temperature fluctuations. Temperature indicators have a fairly noticeable effect on any type of roof. For example, let’s take the lower part of the attic, located directly under the roof - the temperature there is close to room temperature. From the outside, the temperature varies depending on weather conditions. Insulating the roof will solve problems associated with large temperature changes, since external air currents will not penetrate inside the house, and warm air will not escape outside.

The roof can be insulated both from the inside and outside of the house

Therefore, there is no need to doubt the need for roof insulation.

When choosing a material for roof insulation, consider not only its temperature characteristics, but also moisture resistance, environmental friendliness, resistance to negative formations, as well as diffusion and capillary humidification.

Is it possible to do without insulation?

A private house is usually equipped with roofs with several slopes, which form an attic on top of the main floors. Often the attic space is converted into living space , creating additional square meters in the house. This is very important for large families. If there is no insulation of the attic or attic, as such, then living in such conditions will be physically uncomfortable and impossible, due to the lack of heat necessary for the human body.

An insulated roof saves heating costs

Any roofing material, be it iron or slate, will not be able to protect the interior space from the cold, as a specially designed heat insulator (mineral wool, polystyrene foam, etc.).

If you ignore the installation of insulation or postpone it for an indefinite period, you can soon get not only heat leakage from the house, but also problems with the rafter system . It will be covered with fungus and will gradually rot, creating the danger of destruction of the entire structure. If you insulate the roof, but incorrectly calculate the thickness of the thermal insulation, then instead of a protective function, you will get an inversely proportional one - a destructive one.

Insulation of a sloping roof

With proper organization of insulation, the temperature difference will not lead to the formation of condensation. If the thickness of the layer does not meet the required standards, then drops of condensate will appear on it in large quantities. The latter contribute to the loss of strength of the rafters and disruption of heat exchange in the rooms as a whole.

Failure to comply with construction and installation standards is fraught with consequences for human safety. When choosing insulation, you need to be guided not only by its physical and chemical characteristics, but also by the possibility of installing it yourself. If you have questions or difficulties in choosing insulation and the method of its installation, it is better to seek help or comprehensive advice from professional roofers.

Poorly designed roof leaks

Advantages of roof insulation with foam plastic

There are several of them and they all significantly influence the final result.

Low cost . The price of polystyrene foam is at least two times lower than the price of mineral wool. Considering the large amount of materials, the money savings are quite significant.
For insulation there is no need to use membranes to protect against steam and wind . Modern membranes are manufactured using advanced technologies; the high cost of such protection has a noticeable impact on the overall cost of work.
Wetting of the insulation and its harmful effects on the wooden elements of the rafter system are completely eliminated . This is an important advantage, polystyrene foam does not absorb or allow moisture to pass through, and the rafter system is operated in favorable conditions.

As for the disadvantages, two are traditionally mentioned: flammability and the release of harmful chemical compounds into the air. But today these shortcomings are not critical. Why? Let's take a closer look.

Environmental friendliness

Due to the use of innovative fillers, the amount of harmful compounds released does not exceed the maximum standards established by government regulatory organizations and is safe for human health. For example, lacquered furniture in a room releases more harmful compounds into the air than polystyrene foam. In addition, the slabs are securely covered with finishing materials; air from the room underneath does not circulate and almost does not get inside.

Fire safety

For insulation, you need to buy fire-resistant types of foam, and according to their safety group, they are approved for use in residential premises. Such stoves almost do not support open combustion; when heated, they melt and do not ignite. For example, it is impossible to ignite fire-resistant types of foam with matches.

In conclusion, we should remember another advantage of polystyrene foam. This material “forgives” minor violations of insulation technology; even those who have no construction skills can work with it. Mineral wool does not allow mistakes; every violation of technology has very negative consequences.

Preparing surfaces for insulation

Before carrying out thermal insulation measures, you need to clearly know what kind of structure you will have to work with . Based on its technical characteristics, a work plan is determined. The following factors are taken into account:

geometry features (angle of inclination, width, length, etc.), shape and number of slopes;
type of roof covering;
type of rafter system;
main building material of the building;
availability of laid communications;
the roof extends beyond the main structure.

Preparing roof surfaces

It is worth correctly calculating the necessary materials and the approximate time for their installation. When the process is visually presented, everything is weighed and scheduled, then you can cope with absolutely any task. Whether it’s the roof of a rural house or a huge country villa, the algorithm of actions is similar. To properly insulate a roof, you need to properly prepare it:

carry out a thorough inspection of the rafters and sheathing - if damaged elements are found, they must be replaced;
treat wooden parts with varnish or antifungal solution;
check the integrity of communications laid in the under-roof space.

Communications under the insulation

Once the preliminary stage has been completed, you need to make sure that you have all the materials and tools necessary for insulation. If everything is in order, you can start working.

Selection of tools

If you ask a professional roofer what tools you need to have to insulate the roof, he will probably answer that a knife, a hammer, a clear head and skillful hands. Essentially, this is the case, but there are subtleties and secrets that not everyone wants to divulge.

Roofing tools

The most important detail and, accordingly, the trick is choosing a knife . If you take a regular mounting knife, you will be able to work, but throughout the entire time you will suffer from unevenly cutting off pieces of insulation. Such a construction tool has a blade that is too short and is unable to cut through a thick layer of heat-insulating material. In addition to all this, a standard knife will quickly become dull on polystyrene foam or mineral wool.

If you don’t have a knife, then you can use improvised means for cutting - a hacksaw for wood or a wide kitchen bread cleaver with a lumpy sharpening.

The ideal option would be to purchase a special professional long knife . It is made taking into account the requirements placed on it - made of carbon steel with a length of 35 cm and a comfortable handle made of high-quality plastic.

Professional knife

In addition to a good cutting tool, you will definitely need a hammer, a screwdriver, self-tapping screws of different lengths, a long strong cord, reliable protective clothing, glasses to preserve your vision and a respirator.

It would also be a good idea to listen to the following recommendations:

the place where thermal insulation materials are to be cut must be well ventilated;
carefully protect your hands, head area and, especially, the respiratory tract with your eyes - they are most susceptible to damage from flying fibers;
after work, immediately take a shower, thoroughly washing your hands, face and other areas of the skin;
before cutting, make sure that the size is correct - the pieces should fit freely between the rafters, without falling out or being squeezed;
It is advisable to cut mineral wool across the fibers - this minimizes the release of flying particles.

Cutting mineral wool

Material selection criteria

The insulation material must be suitable in all respects

Do not rush to purchase the first thermal insulator you come across, just because it looks thick, is packaged in colorful film and has an attractive price. First of all, the material must clearly meet your requirements and also meet all building codes.

Characteristic	Explanation
Safety of use	Raw materials for roof insulation must be environmentally friendly and completely safe for humans. Its composition should not include toxic chemical compounds released both when heated and at normal temperatures.
Minimum thermal conductivity	This is one of the main conditions for products of this type. The insulating material should retain heat inside the house as efficiently as possible and not allow cold masses to pass in from outside. At the same time, it does not deform and can withstand temperature changes well.
Moisture resistance	Quality plays a significant role. The insulation should not absorb moisture either from the atmosphere or directly falling on it. If this characteristic is lame and the material absorbs liquid like a sponge, then it will soon lose its properties.
Fire safety	There are already a lot of flammable wooden elements in the roof structure. Therefore, the insulation should not support the combustion process.
Noise insulation	This is one of the most important characteristics. Sound absorption will contribute to quality sleep and a comfortable time in the house. If the sound insulation properties of the material are not good enough, then even light rain on the metal roof slopes will create a rumble.
Durability during operation	The material should not attract insects and rodents, and also be resistant to the development of microorganisms such as mold and fungi.
Ease of installation	If you are planning to insulate the roof of a private house with your own hands, then it is important that the raw materials are pliable and convenient for installation work.
Economical consumption	A factor that occupies not the last place, especially for those who have a limited budget.

Roof insulation work

The technology of work largely depends on the chosen material, but for all cases there are general tips.

Slowly draw up an action plan. Decide where to start insulation, and where to do the installation last. You need to plan in such a way as to speed up the work and at the same time improve its quality.
First, you must choose quality insulation. Secondly, knowing how to insulate an attic roof from the inside, you will be able to control your workers
Prepare all materials . Mineral wool needs to be secured from falling out, think about how to do this. You can use wooden slats, metal profiles or ordinary thread. Buy a vapor barrier and tape. For polystyrene foam, you need polyurethane foam to seal the cracks that appear at the junction points.
Prepare your tools. In addition to ordinary measuring instruments, you need to have a professional foam gun, a stapler, a sharp mounting knife, a hacksaw with fine teeth or for metal, and a special device for cutting foam boards. The specific list depends on the choice of insulation.
Tools and materials for roof insulation with foam plastic
Prepare your work area . The attic space should be cleared of construction debris and a flat area should be made on which mineral wool or foam plastic will be cut.

If you have the opportunity to work with an assistant, great, the insulation process will go much faster. There is no such possibility - no problem, all the work can be done independently.

Attic insulation calculator

Go to calculations

Types of thermal insulation material

The modern construction market offers a wide selection of insulation materials that can satisfy almost all existing customer needs. The most popular and in demand are the following types of thermal insulation:

Mineral wool

Mineral wool is a universal material that enjoys well-deserved trust among builders. It has excellent thermal conductivity and can be used to insulate not only roofs, but also walls and floors. This heat insulator can be used both inside and outside buildings. It is fireproof and can withstand air temperatures up to +700 degrees. Due to this, it is widely used in the construction of heating mains.

Laying mats with mineral wool

The term “mineral wool” includes such concepts as glass wool, slag wool and stone wool. Insulation comes in different structures and densities. To arrange the thermal insulation of an iron or slate attic, it is better to purchase raw materials with fibers located vertically.

Stone wool

The second name of the product is basalt wool . This is a type of thermal insulation material that is created on the basis of natural mountain raw materials. Stone wool is an expensive material. But its price is justified by its environmental friendliness and fairly long service life .

Basalt wool

The production of basalt products is quite expensive and involves the use of high temperatures (up to 1.5 thousand degrees). Modern methods for creating such products are based on the binding of fine particles using phenol-formaldehyde.

Glass wool

One of the subtypes of mineral wool , which has been used for many years in insulating under roof spaces. As the name implies, it is based on fine-crystalline glass particles, mainly broken glass containers and glass production waste.

Glass wool insulation

Fiberglass has proven itself excellent in insulating broken roofs. Thanks to its high-strength structure, it is noticeably different from its analogues. Glass wool fibers are several times longer than those of ordinary mineral wool.

Interesting! Glass wool is easy to cut, fits perfectly, has a budget price, and is also suitable for external and internal work.

However, despite all its advantages, this material requires a special approach in terms of safety. The finest glass fibers, getting on the skin, cause severe itching and irritation. Therefore, personal protective equipment during installation must be at the maximum level.

Ecowool

An innovative insulation material that has not yet gained as much popularity as mineral wool or polystyrene foam. Its distinctive feature is the release form - sheets or rolls. This heat insulator has a loose base , the connecting link of which is electrostatics. It is applied by spraying.

Ecowool insulation

Ecowool is made from cellulose production waste and is considered an environmentally friendly insulation material. Its main advantage is that it completely fills the required space, including even small holes and cracks. Its thermal conductivity is at the highest level and is comparable to mineral wool.

Cellulose wool

The disadvantage of the heat insulator is its naturalness. in it , and rodents and other insects feel good. To give the combustible material fire-fighting properties, it is treated with fire retardants.

Styrofoam

Everyone is familiar with foamed polymer, which has a low specific gravity and consists of miniature air bubbles. They are the main heat insulator. Polystyrene foam comes in different densities - pressed and unpressed . The one that has a structure reminiscent of a honeycomb and crumbles without effort is the unpressed type. The pressed material is much denser, cuts perfectly and does not crumble into fractions.

Foam insulation

Both types are used as insulation. Foam boards are available in different sizes and are very easily mounted to the rafter system using adhesive mortar or self-tapping screws . Reinforcing plaster is easily applied to the surface of the slabs. To insulate the attic floor, foam blocks 7-10 cm thick are used.

Important! Polystyrene foam is a “non-breathable” heat insulator, and therefore a room insulated with it needs high-quality ventilation.

Extruded polystyrene foam

This building material is also known as penoplex . It was invented in the middle of the 20th century and since then has been actively used as insulation for roofs, floors and walls of residential premises. The process of its production is very similar to the production of polystyrene foam, but differs in the high-temperature processing of raw materials. The produced material has excellent thermal conductivity, high density and strength . Due to the latter advantage, it is even used for thermal insulation of airport runways.

Sheets of extruded polystyrene foam are manufactured with a technological chamfer along the edges. This allows them to be securely fastened without gaps or visible joints.

Application of polystyrene

Penofol

An innovative solution for arranging a warm roof . Thin thermal insulation material is a layer of foam on aluminum foil. The insulation has a unique ability to reflect heat - up to 97%, and does not allow water and air to pass through. The action of such material is functionally similar to a thermos . There are samples on the market with coating thicknesses from 3 mm to 4 cm.

Working with penofol

As a rule, professional roofers combine penofol with other materials, where it plays the role of a waterproofing agent.

Polyurethane foam

Relatively new material, originally from Germany. In modern construction it is used in the form of foam and slabs . The latter are rarely chosen for ceiling insulation, since they are not very convenient to work with, and they are quite expensive. But polyurethane in liquid or foam form is an excellent option for arranging thermal insulation for roofs, walls and floors. With its help, all voids, cracks and gaps can be easily filled. If other materials need to be carefully cut to the required size, then in the case of polyurethane foam, the foam masses themselves fall in the given direction.

Treatment with polyurethane foam

The innovative product is very convenient to use for insulating slate and broken roofs. Also, its undeniable advantage is the uselessness of arranging a layer of hydro and vapor barrier. The material has high safety indicators, as it resists flammability.

Roof insulation with mineral wool

Prices for mineral wool

Minvata

The roof will be insulated with rolled mineral wool 10 cm thick. The name of the manufacturer does not matter; you can choose the most budget option. The difference in thermal conductivity in hundredths is leveled out by inevitable minor deviations in the execution of work. As soon as you compress the layer of mineral wool a little, the thermal conductivity changes by tenths, what can we say about some hundredths.

Rock wool rolls

Important. Insulation with mineral wool inside should be provided at the stage of roofing work. Mineral wool is easily blown with air, and it carries away heat, the effectiveness of insulation sharply decreases. To avoid heat losses, the mineral wool layer must be protected from the wind; for this, a membrane is placed under the roof. At the same time, this membrane must allow steam to pass through; it will inevitably get into the mineral wool in certain quantities; no modern vapor barrier will ensure 100% tightness. If the steam cannot escape, then condensation will inevitably appear with all the extremely negative consequences. This means that for wind protection you need to use a special, expensive, vapor-permeable membrane. This is the first very important condition for proper thermal insulation, but there is something else.

The membrane is able to fully perform its tasks only if two mandatory conditions are met. First, the amount of humid air is insignificant. Three times - there is an air gap between the membrane and the mineral wool; it evenly distributes moist air over the entire surface of the coating and improves the transmission process. You should always keep this in mind, otherwise there will be condensation under the membrane. And one last thing. Pay attention to which side to lay the material. It only allows steam to pass through the one that has the manufacturer's logo on it.

Step 1. Find out the required width of mineral wool. To do this, it is better to take a thin block and make a mark on it; the distance from the edge of the block to the mark should be 2-3 cm greater than the pitch of the rafters. Walk the template along a pair of rafter legs; if there are no noticeable deviations in size, then this template can be used for a large number of workpieces.

Using a template

Cutting mineral wool

Step 2. Insert a piece of insulation into the niche. To prevent it from falling out, it is recommended to secure it with a rope. Fix it with a stapler to the rafters and pull it in a zigzag manner.

The insulation is secured with rope

Practical advice. You can use wooden blocks or metal profiles to support the insulation, but this is much more expensive and takes more time. An ordinary rope holds mineral wool with the same reliability, and nothing more is needed.

The process of laying insulation

The rope is fixed with a stapler

In the same way, insulate the entire roof and ceiling of the attic (if there is one according to the project). If you work without an assistant, then the mineral wool can be pre-held with any wooden supports; after the thread is stretched, the supports are removed. The thread should be taken only from artificial materials; it should not be afraid of moisture.

The entire roof is insulated in the same way.

Step 3. Check the quality of installation of the insulation; if cracks or large sagging are found, it is recommended to plug them with the remaining scraps of mineral wool.

The roof is insulated

Step 4. Insulate the gap between the first rafter and the gable. If it is small, then you can simply foam it; if the distance is more than five centimeters, then it is better to plug it with mineral wool.

The gap between the first rafter and the pediment

The gap is foamed (photo from the other side)

Step 5. After all the insulation is installed in the niches, you can begin to install the vapor barrier. We have already repeatedly mentioned the importance of this layer of the roofing pie. For vapor protection, it is much cheaper and more effective to use ordinary polyethylene film. The fact is that the sale includes sleeves in rolls three meters wide; after cutting, the width of a single film reaches six meters. You won't find membrane materials of this size anywhere else.

Roll of vapor barrier material

The wider the film, the fewer overlaps, the greater the tightness. It is better to nail a narrow membrane from top to bottom. Why? Warm air always rises, cold air always sinks. The movement of air flows should be such that it does not enter open overlap areas. By the way, they must be tightly sealed with tape.

The wider the vapor barrier, the better

Narrow factory film should be fixed not with horizontal, but with vertical stripes. Place the joints on the rafters; in these places it is easier to stick the tape, there is a stop. Do not confuse windproof materials with vapor barriers. The first steam is allowed to pass through and must be installed between the mineral wool and the roof. The latter completely do not allow steam to pass through; they must be installed on the inside of the attic space.

Attaching the vapor barrier material

Vapor barrier installation process

At this point, the roof insulation work is completed; you can begin finishing the attic walls. There are a great variety of technologies and building materials, choose the one you like best.

Done, you can start finishing work

Algorithm for carrying out installation work

In order to insulate the roof from the inside with your own hands as efficiently , you need to carefully prepare - study topical articles and forums, watch training videos, consult with professionals. The work procedure itself can be divided into four stages:

Arrangement of waterproofing. This step is usually done when covering the roof with roofing material. The waterproofing film is mounted to the rafters with slight sagging. When laying a hydrobarrier, it is important to lay it with the smooth side facing up, then seal the joints with tape. After the film covering is laid, it is fixed with counter-battens, to which the sheathing is nailed.
Installation of thermal insulation. At this stage, insulation of optimal thickness is selected, cut to the required size and placed between the rafter beams. To keep the insulation in place, it is secured using small slats, rope or fishing line stretched between the rafters. To avoid the appearance of cold bridges, heat-insulating mats are placed with each row offset to the side.
Installation of vapor barrier. This film material is placed with the smooth side towards the insulation, and the rough side towards the room. It is important to do everything clearly and not confuse the bottom with the top. Laying a vapor barrier is an important step when arranging the “pie”. Its installation is carried out using thin counter-battens or a construction stapler.
Installation of bars and guide profiles. This stage is necessary for installing facing materials and creating a ventilation gap.

You can do the work yourself

The main mistakes when insulating a roof

Actions that can negate all your work and expenses:

incorrect selection of the thickness of the thermal insulation material can lead to wasting extra money or the lack of the desired result;
ignoring ventilation will create excess moisture and condensation in the room, which will lead to damage to the coating and rafter system;
By neglecting the steam and water barrier, you can get a negative result in the form of condensing moisture, which will be absorbed into the heat insulator, violating its properties.

Almost all private households located in most regions of the country roof insulation from the inside Therefore, such events should not be postponed “for later”. It is better to carry out thermal insulation at the construction stage of the building. Properly organized roof insulation is the key to comfortable living in the house and a noticeable reduction in energy costs.

Warm or cold roof – which option to choose?

When building a house, special attention is paid to the attic - the spatial volume under the roof, which is thermally isolated from the main premises. The homeowner has 2 ways to arrange additional space: leave it cold or insulate the roof and adjacent walls. In the latter case, the attic can become a cozy attic, a guest bedroom or a study. Advantages of organizing a warm roof:

Possibility of effective use of the attic space all year round.
Increased living comfort.
Reducing heat loss and heating costs.

For your information!
Insulation of the roofs of private housing constructions began to be done at the end of the 90s of the last century. The refusal to install a thermal barrier in an earlier period is explained by the lack of necessary thermal insulation materials.

In modern construction, a cold attic is often chosen to save money. This design is more affordable for most developers. In addition, the decision to limit yourself to a cold roof may be determined by other factors:

the difficulty of performing high-tech construction work with your own hands (steam, heat and waterproofing);
the need to supply communications to the attic (heating, water supply, sewerage);
installing a staircase that will occupy part of the lower floor.

Despite the difficulties of arranging a warm roof, this will expand the living space in the house, and the property owner will receive compact housing with a good level of energy saving.