How to insulate an iron roof from the inside. Technology for self-insulation of the roof of a house. Insulation materials

Updated:

2016-09-25

By insulating the roof from the inside with your own hands, you will achieve two important advantages. Firstly, you will be able to get rid of heat losses, which in houses with uninsulated roofs amount to 15%. Secondly, by insulating the attic space, you will get additional space that can be turned into a full-fledged living room.

Photo of roof insulation

To effectively insulate your roof from the inside of your home, you will need to use the appropriate materials. They have special requirements that must be taken into account when choosing.

Density. Thermal insulation properties are higher for those materials whose density is low. For roofing, it is recommended to choose an average density;
Thermal conductivity. Try to use materials that have the lowest thermal conductivity. So the protective layer will practically not release such significant heat from under the roof;
Water absorption. This property is to absorb and retain moisture in the pores of the material. We don’t need to accumulate moisture, so when choosing thermal insulating glass wool or mineral wool, be sure to check whether it is hydrophobic;
Resistance to low temperatures. Most roof insulation materials can easily withstand temperatures as low as -50 degrees Celsius. This is quite enough for any region of our country. But check how many cycles of freezing and thawing the material can withstand;
Fire resistance. The material must not pose a hazard in this component. You can get rid of this disadvantage of some heat insulators through special impregnation;
Chemical resistance. The selected thermal insulation should not be destroyed or lose its properties under the influence of chemicals. But you shouldn’t allow contact with them either;
Environmental friendliness. Since many people equip the roof space under the roof into a residential attic, it is necessary to use only safe, environmentally friendly materials based on natural or non-hazardous components.

Insulation materials used

Taking into account all the requirements for materials for insulating the roof from the inside, the choice will be between several optimal options for heat-insulating roofing materials.

Mineral wool. This is the most popular way to insulate a roof from the inside. Choose basalt wool; be sure to ask the store for a product safety certificate when purchasing mineral wool. The dimensions, thickness, and geometry of the products are selected in accordance with the parameters of the roof itself.
Glass wool. Not so long ago, glass wool was used very widely in matters of roof insulation. But now the emergence of safer, environmentally friendly materials has brought glass wool to the background. Thermal insulation properties are good, efficiency is at a high level. But when insulating a roof with glass wool, be sure to follow safety precautions, wear protective suits, gloves, goggles, and protect your respiratory tract from glass dust. This material is contraindicated for allergy sufferers.
Polymer insulation. These include slabs made of polystyrene foam or expanded polystyrene. At the price, it is a very attractive option for roof insulation, but in practice it has its drawbacks. To begin with, expanded polystyrene and polystyrene burn easily and produce copious amounts of smoke, which is dangerous to the body. They should be chosen for roof insulation only in situations where there are no alternatives.
Expanded clay. If you have insulated the floor in your house, expanded clay will be very familiar to you. It has excellent thermal insulation properties, but it is incredibly difficult to use when insulating a roof from the inside. Theoretically, it is possible to use it, but in practice, not all experienced craftsmen undertake such work.

Stages of roof insulation

Photo of insulation - mineral wool

Now we can begin to consider the main stages of work aimed at insulating the roof from the inside. First, we advise you to watch the video instructions and familiarize yourself with all the nuances of thermal insulation visually, using the example of experienced craftsmen.

The process of internal roof insulation includes four main stages.

Installation of a waterproofing layer on the roof. It is best to lay the waterproofing layer at the stage of laying the roofing material on the roof surface. The material is mounted perpendicular to the rafters, maintaining a slight sag. The smooth side of the waterproofing should face up. Be sure to glue the strips of waterproofing fabric with tape to prevent the formation of cracks and gaps. Then you need to fill the counter-battens with the help of bars on the rafter legs, and lay the sheathing of boards on them. Laying the roofing material begins on top of the board. If the roof coverings have already been completed, the waterproofing layer will have to be installed under the rafters using a stapler. All joints are carefully taped with tape.
Installation of thermal insulation material. Take thermal insulation mats of the required thickness and lay them between the rafters. Laying should be done using a spacer or using a rough hem. The hemming is made of thin slats, fishing line, and twine, which are fastened with nails to the rafters. Fill the entire space between the rafters with mats of thermal insulation material. Excess elements are cut off with a sharp knife. If you want to achieve the maximum effective thermal insulation In order to equip the attic for living space, all layers of material are laid offset from the bottom seam.
Installation of vapor barrier on the roof. Vapor barrier films have one smooth side, which must be laid in the direction of the insulating material. The rough side is responsible for absorbing moisture vapors and is therefore directed indoors. It is very important to lay the vapor barrier film correctly so that it can work effectively. By mixing up the sides of the installation, condensation will soon begin to appear on the surface. The material is mounted with a stapler, the joints are connected with tape.
Installation of profiles or guide bars. They are necessary for the installation of cladding decorative materials and creating the necessary ventilation gap.

Foamed roof insulation

Today, roof insulation using foam insulation is becoming increasingly popular. A striking example is polyurethane foam.

The method of roof insulation in this way has several features:

The roof does not require additional preparation from the inside;
The roof sheathing must be solid, carefully treated with antiseptics;
Special installations are used to spray polyurethane foam on the roof. They provide pressurized carbon dioxide. In the video you can see how they function;
The method of roof insulation with foam insulation requires the invitation of specialists. Purchasing the unit is not financially profitable;
A layer of foam is applied to the inner surface of the roof, achieving the required insulation thickness;
When the foam dries, it forms a layer of waterproof, seamless material on the roof that has low thermal conductivity;
The only drawback of insulation with foam insulation is its vapor permeability. To eliminate it, you need to equip the attic with an exhaust system. But it is only required for arranging a residential attic.

It is not difficult to insulate the roof from the inside with your own hands. But before starting work, you need to study the theory, choose best option insulation and follow the sequence of laying layers of thermal insulation.

One of the most important stages in the construction and major repairs of a roof is insulating the roof of your own house. The roofs of residential buildings can be flat or pitched. Pitched roofs have a cold attic or attic space. Flat roofs can have attic-type rooms. The technology for installing thermal insulation layers directly depends on what configuration the roof has, what insulation is used and what requirements are imposed on the room under the roof.

Why is it necessary to insulate the roof from the inside?

Whether the owner will insulate the roof or not is his decision, however, insulating the roof from the inside has the following advantages over an uninsulated roof:

Insulating the roof from the inside is the only correct solution if the house is already in use. If roof insulation is provided for by the project, then it is better to do it before the roof is installed. This is necessary so that the house can be built in unfavorable weather conditions.

Roofing pie: elements and main requirements

The set of materials that are included in the insulation of the roof and from which the layered structure is formed is called “roofing cake”. The rafter system is the main component in this design, everything else is based on it. All elements in sequence, starting with the roof covering, look in cross-section as follows:

This design helps prevent heat loss in winter, and in summer it protects the under-roof space from extreme overheating. Moisture from outside does not enter the thermal insulation and there is no water vapor inside the room.

Vapor barrier, thermal insulation and waterproofing determine how high-quality the roof threshold will be in terms of insulation capacity.

Basic properties and purpose of vapor barrier and waterproofing

Waterproofing must perform the following tasks:

prevent moisture from getting on the external thermal insulation;
help ensure that moisture vapor disappears when it enters the thermal insulation inside the house.

For waterproofing materials, special membranes and films are used. The film is a microperforated material consisting of three layers, it is a film made of polypropylene, it is laminated with polyethylene on both sides.

The membrane has a non-woven structure. The layer in the middle provides a vapor barrier and waterproofing, while the outer layers are designed for strength. These membranes are called superdiffuse. They have high vapor permeability, while films have lower permeability, and no air gap is required for their installation.

In the case of film, there must be a gap between it and the insulation, otherwise not all steam will be removed. This leads to the fact that the insulation will get wet and lose its heat-saving properties. Membranes last longer than films.

The vapor barrier is designed to prevent moisture vapor from reaching the insulation from the room. Different materials are used for roof insulation. Material characteristics:

the material should have a medium density because they have better thermal insulation properties compared to materials that have a low density. The lower the density of the material, the greater the porosity, and thermal conductivity depends on this;
thermal conductivity. If its indicator is low, it means that the thermal insulation of the material is good. In addition to porosity, the temperature and humidity of the material also affect thermal insulation; if their growth increases, the thermal conductivity also increases accordingly;
water absorption. This is the ability of a material to absorb and retain moisture in its pores;
frost resistance;
flammability;
environmental friendliness.
chemical resistance.

The following materials are used to insulate the roof:

mineral wool and glass wool. They are available in the form of slabs and rolls. Mineral wool has much better characteristics than glass wool; it is more resistant to elevated temperatures;
polystyrene foam or as it is also called expanded polystyrene. It is made in the form of extruded products or slabs. The disadvantage is its flammability. If it burns, then harmful and toxic substances are released. Such material must be reliably protected from fire;
polyurethane foam. Available in liquid mixtures and panel forms. They are applied when insulating structures. If you use liquid mixtures, then the possibility of doing the work yourself is almost eliminated, because you will need to use complex and expensive equipment.

Roof insulation with various designs

As varied as roof designs are, there are so many technological solutions for their insulation. The types of roofing materials also make differences. For example, if the roof is soft, then insulation is carried out outside the house during installation. Work is done before roofing material will be laid. The insulation of pitched and flat roofs differs from each other.

In the absence of waterproofing, roof insulation work must begin with fastening to the rafters waterproofing material. The air gap must be at least twenty millimeters.

For waterproofing, a super-diffuse membrane is best suited; this will avoid an additional air gap between the insulation and the waterproofing.

Thermal insulation must be laid in several layers between the rafters. There must be at least two layers, thereby eliminating through joints between the mats and slabs. Its thickness should be at least fifteen to twenty centimeters. With width rafter legs less than this size, a second layer should be laid overlapping the rafters- this improves the quality of insulation. The sheathing is attached through the insulating layer to the rafters, thereby strengthening the vapor barrier.

It is more difficult to insulate a flat roof from the inside than a pitched one. Thermal insulation must be applied horizontally and is not supported. In this case the bars are pre-fixed to the ceiling, the distance between them should be slightly less than the width of the slabs or roll, and the height of the bars should be equal to the thickness of the insulation.

The insulation must be laid tightly between the bars; you can also strengthen the insulation by gluing it to the ceiling with special mastics or adhesives. The vapor barrier and sheathing for the internal cladding are laid on top of the insulation.

An insulated roof creates a comfortable atmosphere in the house, conserves heat and saves money on heating. However, You shouldn’t save money and choose cheap materials for thermal insulation. As a result, several times more money will be spent. The roof should be insulated only with expensive and proven materials.

Roof insulation plays a huge role in completion construction work. Having built a house or cottage, you have to think about how to make the building as comfortable, warm and cozy as possible. Regardless of whether there will be living space in the attic or not, the roof must be insulated in any case. This will reduce heat loss and contribute to energy saving.

Do-it-yourself roof insulation

Roof insulation work does not have to be done with the help of a specialist; everything can be done with your own hands. The whole process should start with the selection necessary materials and creating a work plan and scheme. Any roof consists of an outer (roof) and an inner (ceiling and rafter frame) parts.

All insulation work is carried out only after checking these components, and if necessary, they are repaired. Then excess moisture is removed and dampness and mold are removed.

To prevent bacterial damage to wooden structures, the inner surface of the roof is treated with an antiseptic, and to protect metal structures from rust, treat such surfaces with anti-corrosion compounds.

Insulation materials

Modern manufacturers offer a wide range of materials for roof insulation. The most popular are:

Mineral wool (fiberglass, stone slabs);
Extruded polystyrene foam;
Polyurethane foam.

The material you choose is determined by the features of the roof. For example, it is preferable to insulate pitched roofs with fiberglass.

Fiberglass

This material has excellent heat-insulating and sound-proofing properties. Fiberglass is also durable, its service life reaches fifty years, it is fire-resistant and vapor-permeable. And, of course, the price; purchasing such material is a very inexpensive pleasure.

The most popular materials in use are mineral wool and polystyrene foam. This popularity is due to the ease of manipulation with them.

Mineral wool

Depending on the original type of material (stone or glass), mineral wool is divided into two types:

— the fibrous structure of the material, formed by melting small particles of rock, as well as various slags and mixtures obtained in industrial metallurgy, makes the product truly unique.

The material is not afraid of high temperatures and is also quite resistant to aggressive chemicals.

Glass wool- a heat-insulating material containing air fibers that are particularly durable. The product is obtained by melting ordinary glass. Like stone wool, the insulation is highly resistant to chemical products and does not burn.

The thermal conductivity of glass wool is 0.05 W/m°C at 25°C. During operation, glass wool practically does not shrink, and its fibrous structure, even after a long period of time, remains the same elastic and elastic.

Mineral wool has excellent characteristics in the following indicators:

Low thermal conductivity;
Excellent sound insulation;
Fire resistance, which is very important for roof material;
Highly environmentally friendly and durable.

Foam plastic and penoplex

Both insulation materials have a fairly small specific gravity, therefore, their use does not weigh down the roof, and also does not involve the additional use of material insulating from steam, since neither foam plastic nor absorb moisture.

Polyurethane foam

One of modern materials is .

It does not need to be glued or nailed to the surface, but is applied by spraying onto it. This material has excellent adhesion to surfaces and as a result a durable, seamless structure is formed that does not allow cold or moisture to pass through.

Insulating the ceiling in a house with a cold roof

Once the materials have been selected, you can proceed directly to the process of laying the material. The specifics of this process depend on the roof design and the future use of the attic.

If the attic is not intended to be used as a living space, then the insulating material is placed on the attic floor between the joists, and not between the roof rafters. A membrane is laid on top to improve vapor permeability, then it can be covered with any floor covering.

To prevent the formation of “cold bridges,” the insulation should fit as tightly as possible to the joists. To do this, when cutting insulation, its size must be determined according to 1-2 cm. wider than the distance between the joists.

Insulating the attic from the inside

If you decide to equip the attic as a living space, you should insulate the roof with your own hands using a different technology:

Initially, a waterproofing layer is laid to protect the insulating material from getting wet. To do this, a waterproofing membrane is laid on top of the sheathing and secured with counter-lattice bars;
Then the insulation itself is laid between the rafters. To avoid the formation of gaps, during installation you should follow the same technology as when insulating the ceiling - the insulation should be wider by 1-2 cm.
As a vapor-permeable layer, a vapor barrier film is attached on top of the insulation and overlapped at the joints;
The film is secured on top with bars, which will serve as the basis for the finishing.

How and with what to insulate a flat roof

Insulation of a flat roof takes place according to a slightly different scheme. The beginning of work is the determination of the purpose of the room. The intended use of the attic as a gym or some other place for entertainment suggests that the roof must be really strong to withstand serious loads.

To form a slight slope of the roof, a cement screed is made on the reinforced concrete slab;
Then, as in the case of a pitched roof, a waterproofing layer is laid;
Upon completion of these works, everything is covered on top with a layer of heat-insulating material (foam plastic, stone wool, extruded polystyrene foam, etc.), on top of which a layer of fiberglass or geotextile is laid.
And the final stage is the filling of pebbles or a layer of gravel and the subsequent laying of floor or paving slabs.

If there is no living space under the roof, then the vapor barrier layer and insulation are laid in the attic, and the waterproofing layer is placed under the roofing material. And in case of complete non-use of the attic space of a flat roof, insulation is carried out either from the inside or from the outside.

By insulating your roof you will not only get additional square meters, but also reliable protection for the home from severe frosts in winter and sultry heat in summer.

Insulating the roof of a house is an important stage of construction or overhaul roofs. The choice of technology for installing a heat-insulating layer depends on the configuration of the roof, the type of insulation and the requirements for the room located directly under the roof.

The need for roof insulation

How to insulate a roof to significantly reduce heat loss at home? First of all, you need to choose the right materials for insulation and strictly adhere to the installation technology. A high-quality insulated roof increases the thermal efficiency of the house by 15%, allowing you to turn the attic into a room suitable for year-round use.

The highest demands are placed on insulating the roof of a residential attic of houses located in areas with cold winters. The roofing pie of summer attics or exploited attics may include a thinner layer of thermal insulation. The roof, under which an unused attic is located, is usually not insulated - thermal insulation is mounted on the attic floor or the ceiling of the living premises. An uninsulated non-residential attic is well ventilated, which prevents rotting of the wooden elements of the roof frame.

When installing pitched and flat roofs, different methods of roof insulation are used.

Thermal insulation of flat roofs

How to make an insulated roof when installing a flat roof? It should be noted that a flat roof can be insulated both from the outside and from the inside.

It is recommended to first carry out external insulation, and based on the results of the winter season, determine the need for internal insulation.

The composition of the flat roof pie includes:

vapor barrier;
heat insulator;
waterproofing layer from roll material;
bulk layer (drainage + cement-sand mixture).

External insulation is most conveniently performed using mineral basalt wool. You can also use polystyrene foam and other rigid insulation materials. It should be taken into account that polymer insulation cannot be used when installing roofing coverings with high fire safety requirements.

Insulation of a pitched roof

The roofing pie of a pitched roof is made with insulation along the rafters. It is important to understand how to properly insulate the roof of a house in order to avoid mistakes that will ultimately lead to damage to wooden structures.

The most popular insulation in private housing construction is mineral wool. This is an easy-to-install, non-flammable material that can be purchased at a low price. But the structure of the wool itself promotes the accumulation of moisture, which causes a significant decrease in the thermal insulation properties of the material, and also, over time, provokes rotting of the elements of the rafter system. Thus, when creating insulation, it is important to provide proper ventilation and vapor and waterproofing roofing pie.

Installation of a pitched roof heat insulator is carried out from the attic side during the construction or repair of the roof. If repair work is being carried out, before laying the insulation, it is necessary to check the condition of the rafters - rotting elements must be replaced with new ones. It is also worth treating all wooden structures with a fire-retardant compound.

The pitched roof pie includes:

finishing roofing covering;
hydrobarrier (layer of waterproofing material);
heat insulator;
vapor barrier;
interior decoration (optional).

Proper roof insulation requires high-quality air exchange, for which it is necessary to create air gaps between:

under-roof waterproofing and roofing covering;
insulation and water barrier;
vapor barrier and internal lining (if provided).

Air circulation (free inflow and removal) is ensured by special vents, one of which should be located in the roof overhang, and the second under the ridge.

Materials for thermal insulation of pitched roofs

Roof insulation technology involves the use various materials. The most popular heat insulators include mineral wool and glass wool (in slabs or rolls), slab polymer materials - polyurethane foam, polystyrene foam. The principles of their installation are similar, but it is worth noting that installing slab material is much simpler and more convenient.

As waterproofing, roofing material or a waterproofing membrane is usually used, which is impermeable to water, but capable of removing moisture from the insulation. The vapor barrier layer can be made of:

roofing felt;
polyethylene film;
glassine;
foil materials laid with foil towards the attic.

To create a roofing pie with high functional characteristics, it is recommended to use a special vapor barrier membrane to create a vapor barrier: it removes condensation outside from the insulation and does not allow steam and moisture to pass into the roofing pie.

Stages of work on insulating a pitched roof

The roof insulation scheme is quite simple. First of all, you need to measure the distance between the rafters. The slabs of cotton wool insulation should be cut according to the results obtained, adding 1 centimeter. This will allow you to fasten the heat insulator between the rafters. This stage of work is greatly simplified if the roofing system is initially designed and installed based on the use of slab insulation boards of a certain width.

If there is no waterproofing between the rafters and the already installed roofing, you should first secure a water barrier. The membrane should envelop the rafters; it is most convenient to fasten it with a construction stapler to the rafters themselves and to the roof sheathing in the openings between them. The waterproofing must be installed under the eaves at the bottom of the roof to ensure moisture drainage. It should be taken into account that with this method of fastening the hydrobarrier, the insulation must be installed without the necessary air gap. For this reason, it is recommended to use a superdiffusion membrane as a waterproofing material.

If there is a waterproofing layer under the roofing, nails are placed on the rafters in increments of about 10 cm. The nails should be located at a distance of 3-5 cm from the waterproofing layer. It is necessary to stretch a polyethylene thread or cord between the nails, tamping them to the end. This will help create an air gap between the hydrobarrier and the insulation. If the heat insulator is planned to be fixed with a cord, and not with lathing for internal cladding, nails must also be driven along the outer edge of the rafters.

If, when deciding how to insulate the roof of a house, you chose cotton slab insulation, then the prepared elements must be slightly compressed and inserted between the rafters. When using stiffer foam boards and similar materials, it is important to accurately size them so that the boards fit snugly into the opening. It is recommended to carry out insulation in two layers. If you have to mount not solid sheets into the opening, but narrower fragments, joining them along the length or width, you need to make sure that the joints of the second layer do not coincide with the joints of the first. The heat insulator should not protrude beyond the plane of the rafter legs. If the rafters are not wide enough to install two layers of insulation, additional timber is nailed to them.

As you know, one of the main tasks of the roof of any building is to protect the structure from moisture penetration and the influence of other external factors. In addition, the roof must reliably retain heat in the house. In this regard, it is necessary to know what roof insulation technology is. We'll talk about this further.

Material: general optional

Many people decide to do it from the inside with their own hands. It is logical that the owners of residential buildings are faced with the question of what material to choose. The minimum thickness of the insulating layer is 25 mm. The optimal figure is considered to be 10 cm. Today on the market you can see a variety of insulating materials for roofs. Modern products have high performance characteristics. When choosing a material, it is necessary to take into account a number of important factors:

Price.
Operational properties.
Resistance to mechanical damage.

The choice of material is also influenced by the type of roof. The roof can be:

attic,
pitched,
flat,
tent

Insulation of the roof from the inside can be done with your own hands using widely used materials. These include, in particular:

The presented materials are intended for different types of roofs and differ in the level of water absorption, environmental friendliness, thermal conductivity and vapor permeability. When choosing insulation, you must also consider factors such as price and strength. Quite often the roof is insulated with foam plastic from the inside. This is a fairly practical and easy to install material. It is also common to insulate the roof from the inside with mineral wool. This is due to the fact that this material has the ability to withstand fairly high temperatures. It also has a low thermal conductivity. In addition, fiber boards are considered a universal material. With its help you can insulate any type of wooden roof.

Features of fibrous materials

Today it is possible to insulate the roof from the inside with mineral wool on various bases. It can be used:

It is recommended to insulate the roof from the inside with your own hands using the first two types. However, we should not forget that fiberglass does not have high moisture-absorbing properties. When used, it is necessary to additionally lay hydro- and vapor barrier layers. One of the varieties of glass wool is “Isover”. Due to the use of special technology during production, air is present in the structure of the material. Due to this, Izover has a fairly low thermal conductivity. In addition, the material is different high level soundproofing. One of the undoubted advantages of glass wool is its durability. The operational period can be up to half a century. Moreover, it does not burn.

Additional materials

When insulating the roof from the inside with your own hands, it is necessary to install waterproofing. The most common materials in this category are:

polyurethane,
mastic,
roofing felt and others.

In addition, when insulating the roof, various films are used to protect the insulation. They can be:

It should be noted that the above lists are far from complete. Among the existing assortment, many find it difficult to decide on the choice of insulation. In this case, you should consult with specialists or more experienced craftsmen. Incorrectly selected material and errors during its installation can lead to heat loss in the house.

When insulating a pitched roof from the inside, you must ensure that the insulation does not block the ventilation gap. When using a superdiffuse membrane during operation, the material is installed close to it. If a traditional roofing film is used, then it is necessary to provide gaps above and below it. The insulation joints of adjacent rows should be staggered. For a tighter fit of the insulation to the rafters, the width of the material must be greater than the distance between the structural elements of the roof. Insulation boards should be laid tightly to each other. If there is a large step between the rafters, the material must also be fixed from the side of the room. To do this, self-tapping screws are screwed in and a wire is pulled between them. It will additionally support the insulating material. If the rafters have a small cross-section, the insulation is placed under and between the beams.

Preparation

First of all, it is necessary to check the roofing elements for integrity. If traces of rotting, damage, or dampness are detected, such parts are replaced. All structural elements must be treated with an antiseptic. If there are heating or water supply wires or pipes, it is also necessary to assess their condition. The areas where the material is supposed to be laid are cleaned of dirt and dried.

Process of laying materials

Slab and roll insulation are best suited for this. The materials are laid in the sheathing between the rafters. During the work, a vapor barrier layer is also installed under the insulation. It is laid on top. A gap must be left between the roof covering and the insulation. Insulation can also be laid on top of the rafters. When correct execution For this work, the material will also be a good sound insulator.

Most common mistakes

The first of these is the incorrect choice of material width. The insulation should not be narrower than the distance between the rafters. Otherwise, cracks will form. This, in turn, will significantly reduce the quality of roof insulation. The second mistake is wetting the material. This should not be allowed under any circumstances. Otherwise, metal elements will begin to rust, and wooden parts will rot. As a result, the under-roof space will become filled with an unpleasant odor. In addition, if the material is very wet, then water leakage into the building is inevitable. Another mistake is ignoring the use of vapor and waterproofing. If you do not provide this protection, then all your money and time will be wasted.

Insulation of the attic roof: features

When planning the arrangement of the roof of such a room, it is necessary to take into account some nuances. Thus, in case of high humidity in the attic, reinforced films are used, on one side of which a special foil is applied. When insulating the attic roof, Special attention should be given to the areas where the ceiling connects to the external walls. In these areas, the insulation should adhere as tightly as possible to the vertical surfaces. Otherwise, they may form. If there are cornices, it is also necessary to insulate them. In this case, cold air will not penetrate into the space under the roof. In difficult areas, it is used to fix the film. This is quite convenient and greatly facilitates the process of laying the insulating material. Wood slats are also used for fastening.

Finally

Despite the fact that the described process of insulating a roof with your own hands seems quite simple, you must follow all the recommendations. One of the common mistakes of residential building owners is choosing a cheap material for insulation, saving on hydro- and vapor barriers. However, as practice shows, such aspirations do not justify themselves. Poor roof insulation results in significant heat loss. In this case, not only the material itself is damaged, but also the structural elements of the roof. In addition, the service life of cheap insulation materials is quite short. After a few years, all the work will have to be redone. And if there is damage in rafter system- repair it too. Properly equipped thermal insulation will allow you to significantly save on heating and electricity. Particular care should be taken when protecting the attic space.