There is such a wide variety of insulation materials on the building materials market in our time that it often even complicates the choice. They differ in the base material and form of manufacture, in the field of application and, of course, in the reputation of the manufacturer. The cost of heaters is often quite considerable, so it is quite understandable that consumers want to give their money for a guaranteed high-quality product. And this means that the choice is best to stop on the original products of well-known brands, among which Isover (in Russian transcription - isover) occupies one of the leading places in terms of the efficiency of thermal and sound insulation of buildings, in terms of its reliability and durability.
Isover insulation, the technical characteristics of which will be further discussed in this publication, is widely used in various fields. The materials of this brand are famous for effective protection of residential, public, industrial, auxiliary buildings and structures from cold, heat and external noise, and there is no doubt about their high quality.
A few words about the company-manufacturer of heaters "Isover"
The manufacturer of "Isover" is a company that is part of the largest international association "Saint Gobain", which is engaged in the manufacture of a huge and comprehensive range of modern building materials. Saint Gobain brings together over a hundred industrial companies and organizations engaged in innovative developments in the construction industry. It is difficult even to imagine, but the history of the emergence of this manufacturer dates back to the 17th century - are there many companies in the world that would have already celebrated their 350th anniversary ?!
Huge, centuries-old work experience, the ability to properly organize the activities of all links, constant independent development of innovative technologies and much more - all this is the basis of the fact that the manufacturer has become the undisputed leader in the production of materials that allow creating zones of the most comfortable living space.
Saint Gobain works in a variety of ways. These are high-tech materials, ordinary flat glass and designed for special applications, construction products, which include insulation, plasterboard and other gypsum-based products, building mixtures, tiles and facade cladding, acoustic panels for walls and ceilings, complex drainage systems, plumbing and sewer pipes, and more.
In addition to the Isover heaters considered in this publication, which are produced in various modifications, the company also produces technical thermal and sound insulation materials under the Isotec and Isoroc brands.
The company has been operating in Russia for over 20 years, producing various building materials, including mineral insulation based on basalt and fiberglass. The plant for their manufacture has been operating for more than 10 years in Yegoryevsk (Moscow region), and in 2011, as part of its business expansion strategy, Saint Gobain acquired the Minvata plant in Chelyabinsk, where, after a radical re-equipment, now a heater based on stone fibers is produced.
All enterprises of this association successfully pass the certification of the international standard of environmental management, therefore, heaters are considered environmentally friendly products. The company places its products in the same environmental group as materials such as linen and cotton, and they comply with European and international standards - EN 13162 - ISO 9001, as well as Saint Gobain's own extremely stringent standards.
The main types of insulation "Isover"
So, the insulation materials of this manufacturer can be made of glass or basalt fibers. Such specific structures are obtained as a result of processing quartz sand, broken glass or mineral rocks of the basalt group - melting them and then pulling them using the TEL fiber technology. The resulting thinnest, almost microscopic filaments with a thickness of 4-5 microns and a length of 110-150 microns are interconnected with special resins.
Mineral insulation "Isover" is produced in mats, which are then rolled into rolls and in slabs. Both those and others can have different thicknesses and several linear dimensions, depending on their purpose and the recommended laying technology.
The main lines of this material are divided into types according to their areas of application in construction and into universal ones. For example, the purpose of many heaters is clear from the name:
- "Isover Warm Home Stove"
- "Isover Warm House"
- "Isover Warm Walls"
- "Isover Warm roof"
- "Isover Sauna"
And the following types can be safely attributed to materials of universal purpose:
- Isover Optimal
- "Isover Profi"
- "Isover Classic"
- "Isover Extra"
Each of the insulation materials mentioned above has its own characteristics that correspond to its area of application. They will be discussed below.
In addition, Isover produces heat and sound insulators for floors, interior partitions, ceilings and suspension systems, and wall materials are subdivided into those used for interior surfaces and for building facades.
There is one more criterion for the Isover insulation materials division - in terms of rigidity. The designation has letter symbols applied to the packaging, and its decoding is given in the table below. This parameter is closely related to such characteristics as the density of the material, the index of its thermal conductivity, and the degree of its compression in the original packaging (many types, after opening the packaging, significantly increase in the thickness of the board or mat).
Table of divisions of "Isover" heaters according to the degree of hardness:
| Insulation marking | Average density, kg / m³ | Thermal conductivity coefficient, W / m × ° K | Compression ratio in original packaging |
|---|---|---|---|
| CT-II- elastic mats in a roll | 11 ÷ 13 | 0,041 | 1:4 |
| CT scan- elastic mats in a roll | 17 | 0,036 | 1:4 |
| KL-A- elastic plate | 17 | 0,041 | 1:1,5 |
| KL- elastic plate | 19 | 0,033 | 1:1,4 |
| RKL- rigid plate, fiberglass reinforced on both sides | 60 | 0,030 | No |
| RKL-A- windproof rigid plate (with groove-ridge connection) | 60 | 0,030 | No |
| RKL-EJ- plate of increased rigidity (with groove-tongue connection) | 95 | 0,031 | No |
| SKL- semi-rigid plate | 50 | 0,031 | No |
| VKL- rigid plate | 130 | 0,032 | No |
General advantages and disadvantages of "Isover" heaters
Before proceeding to a detailed examination of the technical characteristics of each type of insulation "Isover", it makes sense to obtain information about their general features that are inherent in each of these products.
The positive characteristics of this material include the following qualities:
- Low thermal conductivity allows you to keep the heat generated by the heating units in the house for as long as possible, which means that less fuel will be spent on heating the building, and the owner will save a decent amount on paying for it.
- A high level of absorption of sound waves - this quality will reliably protect the house from external noise, and the rooms (when using material in the construction of partitions) from extraneous internal sounds. Good is achieved due to the structure of the material, since the air gap between the fibers is capable of absorbing vibrations. Any, in fact, from Isover heaters performs two functions at once: it insulates the room and makes it as quiet as possible. But in addition, the manufacturer produces a material specifically designed specifically for noise protection.
- A high level of vapor permeability is one of the most important qualities for insulation. Such material is also called "breathing", since it does not collect or retain moisture in its structure, which means that it will not create a favorable environment for the appearance of pathogenic microflora, the walls will not become damp. In addition, the ability to freely pass water vapor makes the insulation more durable in its direct functionality, since the heat conductivity of a waterlogged material sharply increases, and it becomes unable to provide proper thermal insulation of building structures.
- The incombustibility of Isover heat insulators makes them absolutely safe. The material is classified according to the NG flammability scale, that is, according to the highest degree of fire resistance, which means that it can be safely used in the construction of frame, block and log houses.
- "Isover" - slabs and mats are lightweight, so they can be used to insulate buildings in which excessive load on the supporting structures is unacceptable.
- The service life of the insulation, subject to the installation technology and operating rules, is 50 years or more.
- Heaters "Isover" are treated with water repellents, that is, water-repellent compounds, so they have a fairly high moisture resistance.
- Affordable cost. Compared to other similar materials, Isover products have a price that is quite acceptable for a family with an average income.
True, the heat insulators of this manufacturer have their own "disadvantages", which for some may be significant, so they should also be mentioned:
- Since phenol-formaldehyde resins are usually binders for basalt and glass fibers, the material cannot be called absolutely clean from an environmental point of view. The fact is that over time, such compounds can begin to release toxic fumes into the environment that are dangerous to human health.
Despite the fact that the manufacturer positions its products absolutely "clean", this still has to be treated with a certain distrust. Binder resins have not yet been disposed of - and although formaldehyde emission is really reduced to a possible minimum, it is too early to talk about its complete absence.
It should be noted here that almost all heaters of this type include precisely these binders. There are certain exceptions, but they are still so expensive in cost that not every homeowner can afford such thermal insulation.
- Despite the rather high moisture resistance, it is impossible to exclude waterlogging of the material in direct contact with water. Thus, a thermal insulation structure, for example, on a facade or on a roof, must also provide for a reliable waterproofing layer.
- Since for the manufacture of any mineral wool, the finest fiber is used, which has a relative stiffness, during installation, its smallest particles can get into the respiratory tract and eyes, as well as stick into open skin areas. Therefore, this factor somewhat complicates the installation process due to the need to use protective equipment.
In addition, when insulating a house internally, mineral wool must be sealed with a dust-proof material so that fiber particles do not enter the air of living quarters.
- The manufacturer calls the advantage of heaters their incombustibility. However, it should be noted that some types of heaters (this mostly refers to foil) are not non-flammable, but self-extinguishing, that is, they do not allow fire to spread. They can be used for buildings raised from any material, but at the same time observing the requirements for ensuring fire safety prescribed in SNiP 21-01-97.
Read interesting information in our new article on our portal.
Characteristics of "Isover" thermal insulation materials and recommendations for their use
Now, having familiarized yourself with the information about the main "pros" and "cons" of thermal and sound insulators "Isover", you can proceed to the consideration of the detailed technical characteristics of each of them.
Prices for insulation "Isover"
insulation Isover
Universal heaters "Isover"
The company produces not only insulation for narrowly targeted applications, but also universal ones that can be used for various building structures. Such materials include: "Optimal", "Profi", "Classic" and "Extra", as well as "Warm house stove" and "Warm house".
Their technical and operational characteristics are shown in the table:
| "Isover Optimal" (plate) | "Isover Profi" (mats in rolls) | "Isover Classic" (plates) | "Isover Classic" (mats in rolls) | "Isover Extra" (plate) | |
|---|---|---|---|---|---|
| 0.037 ÷ 0.040 | 0.036 ÷ 0.040 | 0.038 ÷ 0.041 | 0.038 ÷ 0.041 | 0,034 | |
| 45 | 45 | 54 | 54 | 55 | |
| 1,0 | 1,0 | 1,0 | 1,0 | 1,0 | |
| Water vapor permeability mg / m × h × Pa | 0,3 | 0,3 | 0,55 | 0,55 | 0,55 |
| Insulation density, kg / m³ | 28 ÷ 36.5 | 28 ÷ 36.5 | 15,0 | 15,0 | 20,0 |
| Flammability group | NG | NG | NG | NG | NG |
| Thickness, mm | 50; 100 | 50;100;150 | 50; 100 | 50 | 50; 100 |
| Width, mm | 600 | 1220 | 610 | 1220 | 610 |
| Length, mm | 1200 | 5000; 5000; 4000 | 1170 | 6150; 8200 | 1170 |
| 0,288 | 0,61; 0,61; 0,73 | 0,5; 0,5 | 0,75; 1,0 | 0,5 | |
| 5,76; 2,88 | 12,2; 6,1; 4,88 | 10,0; 5,0 | 15; 20 | 10,0; 5,0 | |
| 8; 4 | 2 (20 slabs); 1 (10 slabs); 1 (8 slabs) | 14; 7 | 2 | 14; 7 |
Isover Optimal
"Isover Optimal" is a universal material made of basalt fibers, which is used for insulation and sound insulation of all sections of the frame house structure, except for the foundation - this is the roof, ceilings, walls, partitions and floors along the logs.
In this version, in accordance with its name, we found the optimal combination of various qualities of the material:
- low thermal conductivity and excellent elasticity;
- simple installation that does not require additional fasteners;
- multifunctionality of use;
- The first step on the insulated surface or in the frame is to install racks from a bar with a step of 590 mm. Such a distance "in the light" will help the plates of the heat and sound insulating material to reliably anchor the vaspor. The thickness of the racks or the lag should be equal to the thickness of the heat insulator.
- The next step between the elements of the lathing in one or two layers is installed insulation plates, which must be tightened at the ends.
- If the wall of a frame house is insulated, then from the outside the insulation is tightened with a wind-waterproof membrane, and from the inside - with a vapor barrier film. These materials are stretched horizontally along the frame, starting from the bottom line of the wall, and secured to the frame posts using staples and a stapler. The upper sheet should be overlapped with the lower one, by 120 ÷ 150 mm, the membrane joints must be sealed by sticking a moisture-resistant adhesive tape on them.
- After that, a counter-lattice is fixed on the frame, on top of the film, on which the facing material will already be fixed. Thanks to this approach, a ventilation gap is created between the insulation and the decorative finish, which contributes to the spontaneous removal of water vapor and evaporation of condensate.
- The final stage is fixed to the frame structure, first from the side of the street, then from the inside of the house.
"Isover Profi"
"Isover Profi" is made of fiberglass in the form of rolled mats. This insulation is also universal, as it can be used for thermal insulation of roofs of various shapes, walls from the inside and outside, frame walls, attic floors, floors, suspended ceilings, as well as sound insulation of interior partitions.
This insulation has its own advantages that distinguish it from other Isover products:
- "Isover Profi" has one of the lowest thermal conductivity of all materials from this manufacturer.
- Due to the special markings on the mat, it is convenient to cut it. At the same time, even if a non-standard design is insulated, a minimum of waste remains from the material.
- Insulation is produced in different thicknesses - 150, 100 and 50 mm.
- This version of the heat insulator belongs to the "NG" group in terms of flammability.
- The manufacturer positions it as a material safe for human health.
Installation work using such material is easy and quick, since the roll on the package has the markings necessary for cutting. Therefore, the mats are cut to the desired width without unrolling the roll.
- The first step is to install racks with a standard pitch of 600 mm for the lathing. Roll width 1220 mm, it is cut in half and get two strips 610 mm wide. Thanks to this size, the mats will be tightly installed between the racks or laid between the lag raspor.
- The cut roll is released from the packaging, unfolded and installed between the frame elements. If the strip of insulation is not additionally cut into slabs across, this will help to avoid the formation of cold bridges.
- The non-standard arrangement of the frame racks will complicate the installation. In this case, before cutting the mat, it is necessary to measure the distance between the frame elements, not forgetting to add 5 mm to the resulting distance for spacer on each side.
- If the attic structure is also insulated, then before installing the insulation, a windproof film is fixed on the outside of the roof.
- After the insulation "Isover" is installed, it must be tightened from the inside with a vapor barrier, the membrane of which is stretched horizontally, starting from the floor of the attic floor.
"Isover Classic"
Due to the fact that "Isover Classic" is universal, it can be used to insulate almost all structures of a building, excluding the basement, foundation and surfaces that are subject to high loads. They are heat and sound insulated by frame structures - partitions and external walls, roofs and ceilings, ventilated facades and floors along logs.
"Isover Classic" is a fiberglass insulation produced in the form of mats in rolls and slabs with low rigidity. This means that it has a pronounced porous structure, which makes this material a good insulator.
However, this type of insulation does not have high strength characteristics, therefore it is not suitable for installation under a screed and under plastering of walls. If it is planned to use it to insulate the facade, then only for materials such as siding, lining or slabs fixed to the crate.
Isover Classic has the following distinctive features:
- A layer of this insulation 50 mm thick is equivalent to a 950 mm thick brickwork in terms of heat saving.
- Using "Isover Classic" as a house insulation, you can reduce the cost of heating a building by 40 ÷ 45%.
- The material performs two functions at once - to protect the house from cold and external noise.
- Installation of slabs is carried out without the use of additional fasteners - it is installed by a gap between the elements of the crate or lags, adjoins them tightly, excluding the occurrence of cold bridges.
- If the floor is insulated along the logs, then it is recommended to fix them on a glassine previously spread on the base.
- The width of the "Isover Classic" slabs is 610 mm, and the width of the mats is 1220 mm, so the distance between the joists of the floor or the racks of the battens should be 600 mm.
- The roll is cut across in the packed form in half. The manufacturer prudently applies markings to the packaging, along which it will be easy to navigate when cutting the material.
- Then, the insulation boards are laid, and the mats are rolled out between the wooden structural elements. Due to the fact that the heat insulator is 10 mm wider than the distance between the lags, it will fit snugly between them.
- Insulation should fill all the space between the timber. Only in this case, it is possible to achieve the desired effect of heat preservation and protection from external noise.
- If the installation of the insulation is carried out in two layers, then the mats of the second layer must be laid or installed with an offset of their joints by 120 ÷ 150 mm relative to the first.
- It is recommended to use the material in combination with a wind-waterproof film and a vapor barrier membrane.
"Isover Extra"
"Isover Extra" is an insulation made of fiberglass in the form of slabs with increased elasticity with a 3D effect, which allows the material, after being compressed, to expand, filling all the free space between the timber or metal profiles in plasterboard systems. In addition, the slabs adhere tightly to the wall when insulating vertical surfaces, and are also tightly connected to each other at the joints, which completely excludes the appearance of cold bridges.
Thanks to these features, the insulation "Isover Extra" is universal and is used for thermal insulation of walls from inside the premises, facade surfaces for cladding them with bricks, siding, clapboard and decorative plates, roofs of various modifications.
"Isover Extra" has a thermal conductivity coefficient of 0.034, which makes it one of the most effective materials from the heat-saving heaters presented by Isover - its use reduces heat loss to minimum values.
Installation of this type of insulation is carried out according to the recommendations from the manufacturer given above, taking into account the width of the plates and the distance between the frame elements. The only thing I would like to add is that thanks to the 3D effect, it is not necessary to level the insulated surface under the installation of "Isover Extra" - due to expansion, it will firmly adhere to it.
"Isover Warm House Stove" and "Isover Warm House"
These two insulation materials can also be called universal, as they are suitable for installation in most construction areas. Their main characteristics, slightly different from each other, are shown in the table:
| The main parameters of the insulation | "Isover Warm House" | "Isover Warm Home Stove" |
|---|---|---|
| Thermal conductivity coefficient, at 10˚С, W / m × ˚С | 0,040 | 0,040 |
| Airborne sound insulation index Rw (dB) | 45 | 45 |
| Moisture absorption at partial immersion in 24 hours, kg / m2, no more | 1,0 | 1,0 |
| Water vapor permeability mg / m × h × Pa | 0,55 | 0,55 |
| Insulation density, kg / m³ | 11,0 | 11,0 |
| Flammability group | NG | NG |
| Thickness, mm | 50 | 50 and 100 |
| Width, mm | 1220 | 610 |
| Length, mm | 5490 and 7000 | 1170 |
| Insulation volume in a package, m³ | 0.67 and 0.85 | 0.5 and 0.5 |
| Insulation area in the package, depending on the thickness, m2 | 13.4 vs 17.1 | 10 and 5 |
| The number of mats in the package, depending on the thickness, pcs. | 2 and 2 | 14 and 7 |
"Isover Warm house stove" and "Isover Warm house", as can be seen from the table above, have the same physical and operational characteristics and differ only in linear dimensions and volume. Both materials are made from fiberglass obtained from the processing of a specially selected mixture of limestone, sand and soda. However, it is more convenient to use slabs for insulation in one area, and mats in another.
- "Isover Warm Home Stove", as the name implies, it is produced in slabs, which are more convenient to use for thermal insulation of vertical surfaces, both from the inside and outside, as well as to insulate them
- "Isover Warm House" produced in the form of mats and sold in rolls. This modification of the insulation is perfect for laying on horizontal surfaces. So, they insulate interfloor ceilings, they insulate the floors over a cold basement well, but they are mounted only between the logs, and this material is not suitable for screed.
Having dealt with the universal insulation "Isover", you can proceed to the consideration of those that are intended for specific areas of the structure.
Mineral wool "Isover" for specific areas of application
For individual sections of thermal insulation of buildings, the manufacturer has developed several types of specific materials. Therefore, to make it easier to understand their models, they should be grouped.
Insulation of the facade for further plastering
Several Isover materials are used to insulate this part of the building - these are Facade-Master, Plaster Facade, Facade and Facade-Light. Each of them is designed for specific surfaces, so their characteristics differ from each other:
| The main parameters of the insulation | "Isover Facade-Master" (slab) | "Isover Plaster Facade" (slab) | "Isover Facade" (slab) | "Isover Facade -Light" (slab) |
|---|---|---|---|---|
| Thermal conductivity coefficient, at 10˚С, W / m × ˚С | 0.036 ÷ 0.040 | 0.038 ÷ 0.040 | 0.037 ÷ 0.042 | 0,034 |
| Airborne sound insulation index Rw (dB) | 45 | 45 | 45 | 55 |
| Moisture absorption at partial immersion in 24 hours, kg / m2, no more | 1,0 | 1,0 | 1,0 | 1,0 |
| Water vapor permeability mg / m × h × Pa | 0,3 | 0,4 | 0,55 | 0,4 |
| Insulation density, kg / m³ | 125,0 | 80,0 | 125 ÷ 155 | 50,0 |
| Flammability group | NG | NG | NG | NG |
| Thickness, mm | 50, 100, 150,200 | 50, 100, 150 | 50, 100,150 | 50, 100,150 |
| Width, mm | 600 | 600 | 600 | 600 |
| Length, mm | 1200 | 1200 | 1200 | 1200 |
| Insulation volume in a package, m³ | 0,288 | 0,288; 0,288; 0,216 | 0,144; 144; 0,216 | 0,288; 0,216; 0,216 |
| Insulation area in the package, depending on the thickness, m2 | 1,44; 1,44; 2,16; 1,44 | 5,76; 2,88; 1,44 | 2,88; 1,44; 1,44 | 5,76; 2,88; 1,44 |
| The number of mats in the package, depending on the thickness, pcs. | 4,0; 2,0; 2,0; 1,0 | 8,0; 4,0; 2,0 | 4,0; 2,0; 2,0 | 8,0; 3,0; 2,0 |
- is a heater made of basalt fiber (stone wool), which is sold in slabs of different thicknesses. The material is intended for insulation of the facade of residential buildings up to 16 meters high, under a thin-layer plaster.
Prices for "Facade-master" plaster
Facade master
- It is produced in glass fiber slabs and is an innovative material for exterior insulation of a building. This material has a more affordable price than the previous one, but it is also intended for installation under finishing with plaster solutions, which will be applied to their surface with a thin layer.
- produced in the form of basalt fiber slabs, and is intended for facade insulation. The material is usually laid with the expectation of subsequent finishing with decorative plaster.
- - this version of fiberglass facade insulation is used for buildings of small storey and is installed under the finishing with a thin plaster layer. The material is well suited for warming country houses and cottages. The insulation is characterized by high strength and rigidity, however, it has less weight compared to insulation of a similar purpose.
- Insulation of the facade using the "wet facade" technology, that is, with subsequent plastering, must be carried out at a temperature not lower than +5 degrees, having previously protected the walls from possible direct ingress of water. Usually, for this, a temporary structure is installed from a bar or metal profiles, which serves as a frame for a plastic film.
- Installation of insulation begins from the bottom of the wall. Fix the slabs to a previously primed and dried wall, to an adhesive solution. The mortar should be applied to the surface of the board so that contact is ensured for at least 40% of the total area of the board.
- Plates are glued to the wall, pressing tightly against each other. If between them, due to the wrong "geometry" of the walls, gaps of more than 2 mm are formed, they must be filled with strips of the same insulation.
- After the glue dries, the insulation is additionally fixed on the wall with special fasteners, the so-called "fungi".
- The next step is to cover the insulated wall surface with a thin layer of adhesive so that the relief of the slabs can be seen through it. Usually, the same glue is used as for the installation of the boards. After that, a thicker layer is applied, about 3 ÷ 5 mm, and it is recommended to walk over it with a notched trowel with a low ridge.
- After that, without a pause, a reinforcing fiberglass mesh is fixed on the prepared surface, which is sunk in the distributed solution using a spatula (trowel). The mesh must be completely immersed in the solution.
- Next, proceed to the application of a thin (about 3 ÷ 4 mm) base plaster layer. It can be a special compound designed specifically for the "wet facade", or again the same assembly adhesive for mineral wool. This layer is leveled, smoothed, and when ready - primed with a special compound for a specific type of decorative plaster.
- After the base plaster coat is dry, decorative plaster can be applied to it.
Materials for wall insulation from the inside and outside
The next line of insulation "Isover" includes products designed for heat and sound insulation of walls, both inside and outside. These include such versatile materials as "Isover Profi" and "Isover Classic Slab", the characteristics of which are described above, as well as "Isover Warm Walls", "Isover Heat and Quiet Wall" and "Isover Standard", the parameters of which are presented in the following table:
| The main parameters of the insulation | Isover Warm Walls (slab) | "Isover Warmth and Quiet Wall" (mats in rolls) | "Isover Heat and Quiet Wall" (slabs) | "Isover Heat and Quiet Wall Plus" (slabs) | "Isover Standard" (plates) |
|---|---|---|---|---|---|
| Thermal conductivity coefficient, at 10˚С, W / m × ˚С | 0.036 ÷ 0.040 | 0,034 | 0,037 | 0,037 | 0.035 ÷ 0.039 |
| Airborne sound insulation index Rw (dB) | 45 | 50 | 50 | 54 | 45 |
| Moisture absorption at partial immersion in 24 hours, kg / m2, no more | 1,0 | 1,0 | 1,0 | 1,0 | 1,0 |
| Water vapor permeability mg / m × h × Pa | 0,3 | 0,7 | 0,7 | 0,7 | 0,3 |
| Insulation density, kg / m³ | 20,0 | 30,0 | 30,0 | 30,0 | 40 ÷ 55 |
| Flammability group | NG | NG | NG | NG | NG |
| Thickness, mm | 50, 100 | 100 | 50, 100 | 50 | 50, 100 |
| Width, mm | 610 | 1220 | 600 | 610 | 600 |
| Length, mm | 1170 | 5000 | 1200 | 1170 | 1200 |
| Insulation volume in a package, m³ | 0,5; 0,5 | 0,61 | 0,288 | 0,356 | 0,288 |
| Insulation area in the package, depending on the thickness, m2 | 10,0; 5,0 | 6,1 | 5,76; 2,88 | 7,14 | 5,76; 2,88 |
| The number of mats in the package, depending on the thickness, pcs. | 14,0; 7,0 | 1,0 | 8,0; 4,0 | 10,0 | 8,0; 4,0 |
"Isover Standard"
"Isover Standard" - slabs made from basalt fibers, which are used in multilayer insulating structures, in which block house, siding, lining, facing bricks, and other similar materials act as decorative finishing. In addition, Standard slabs are also suitable for thermal insulation of frame structures, as well as for mansard and pitched roofs.
- The material has an average density, therefore it is not suitable for installation under plastering of walls.
- Good elasticity of the insulation ensures its tight fit to the surfaces of the walls and frame structure.
- The increased parameters of stretching and strength provide reliable fixation of the plates with the help of special clamping fasteners - "fungi".
"Isover Warm Walls"
Isover Warm Walls are heat and sound insulation boards made of glass fibers, reinforced with a water-repellent treatment.
This type of insulation is used for thermal insulation of walls from the inside of a building and for outdoor installation under siding, decorative plates, clapboard or facing brick, as well as for installation in frame structures. In addition, the material is suitable for insulating roofs of various configurations, as well as loggias and balconies.
- Insulation plates are quite resilient and elastic, so they stick well between the frame racks, do not slip or break during installation.
- The increased moisture resistance allows the use of the material for insulating roofs and balconies.
"Isover Warmth and Quiet Wall"
Isover Heat and Quiet Wall is made of fiberglass in the form of slabs and mats. Due to its porous structure, the material is capable of performing two functions, which are reflected in its name.
This version of "Isover" is used for internal and external insulation of walls, as well as for frame buildings.
- "Isover Warmth and Quiet Walls" has a higher vapor permeability parameter compared to other heaters, which allows it to "breathe". Thanks to this quality, a favorable microclimate is created in the premises of the house.
- The materials have high elasticity, so they quickly spread out in the frame, filling all the free space.
- When installing slabs or mats in any frame, they do not need to be additionally fixed, since they are perfectly held due to the expansion during self-expansion.
"Isover Warmth and Quiet Wall Plus"
This version of wall insulation is made in fiberglass plates and has characteristics similar to the materials presented above. But its distinctive feature is a lower thermal conductivity and an increased sound insulation index.
"Isover Heat and Quiet Wall Plus" is intended for wall insulation from the inside of the building, as well as outside under the decorative layer of siding, slabs, lining or facing bricks. In addition, using additional protective materials, such as wind-waterproofing and vapor barrier membranes, frame structures can also be insulated with these plates.
Recommendations for internal wall insulation from the manufacturer
The work of installing insulation mats or slabs on the walls between wooden posts or metal profiles is quite simple, with the correct marking and installation of the lathing elements.
- The first step is to fix the lathing on the marked wall. The racks are installed at a distance from each other, depending on the width of the insulation material. So, if the width of the slab is 600 mm, then the racks must be fixed in increments of 590 mm.
- Further, insulation material is installed between the fixed racks. It can be mounted in one or two layers, depending on the required thickness.
- If a metal profile is used for the frame, it may be necessary to additionally fix the plates on the wall with disc dowels - "fungi". When installing a batten from a bar, there is usually no need for additional fixing of the insulation, since it is securely held due to self-expansion.
- After all the insulation is installed in its place, it must be tightened from the side of the room with a vapor barrier membrane, which will additionally become a layer that will delay the spread of dust, and small particles from mineral wool fibers will not enter the airspace of the premises. Membrane webs are stretched horizontally, starting from the floor, each subsequent strip is overlapped by 120 ÷ 150 mm on the lower one, and their joints are sealed with adhesive tape.
- Further, plasterboard plates, one of the types of lining, or decorative plates are fixed to the frame elements.
When installing insulation using this technology on the outer surfaces of the walls, the work is carried out in the same way, with the exception of some points. For example, instead of a vapor barrier, a wind-waterproofing diffuse membrane (which passes water vapor well) is stretched over the insulation, and counter-lattice slats are attached to the racks on top of it, which will create a ventilated gap between the insulation and the decorative sheathing. Thus, moisture will freely evaporate into the atmosphere.
Isover materials for roof insulation
For roof insulation, the Isover company also provided several heat-insulating materials, and some of them have already been described above - these are the Optimal and Profi station wagons. In addition to them, there are highly specialized heaters "Isover Warm Roof" and "Isover Pitched Roofs and Attic", the characteristics of which will be discussed below.
| The main parameters of the insulation | "Isover Warm roof" (mats in rolls) | Isover Pitched Roofs (slabs) |
|---|---|---|
| Thermal conductivity coefficient, at 10˚С, W / m × ˚С | 0.037 ÷ 0.039 | 0.037 ÷ 0.039 |
| Airborne sound insulation index Rw (dB) | 45 | 45 |
| Moisture absorption at partial immersion in 24 hours, kg / m2, no more | 0,08 | 1 |
| Water vapor permeability mg / m × h × Pa | 0,3 | 0,55 |
| Insulation density, kg / m³ | 13 ÷ 15 | 15 |
| Flammability group | NG | NG |
| Thickness, mm | 50; 150 | 50, 100 |
| Width, mm | 1220 | 610 |
| Length, mm | 5000; 4000 | 1170 |
| Insulation volume in a package, m³ | 0,61; 0,73 | 0,714 |
| Insulation area in the package, depending on the thickness, m2 | 12,2; 4,88 | 14,27; 7,14 |
| The number of mats in the package, depending on the thickness, pcs. | 2,0; 1,0 | 20,0; 10,0 |
"Isover Warm roof" and "Isover Pitched Roofs"
Both materials are intended for insulation of roof slopes of different configurations, but have different characteristics, in terms of release form, linear dimensions and material of manufacture. They are united by the fact that heaters for this area of application undergo a special treatment using the AquaProtect technology, which provides the products with increased moisture resistance.
- Isover Warm Roof is made of fiberglass in the form of rolled mats. They go on sale in polyethylene packaging, on which markings are applied for the convenience of cutting the material along its width.
- "Isover Pitched Roofs" - is made from basalt fibers in the form of slabs, which are pressed and packed in polyethylene.
These materials are suitable for thermal insulation of pitched and mansard roof surfaces, as well as, by the way, for interior and exterior wall surfaces under decorative panels and facing bricks.
The procedure for installing insulation in the roof truss system is described in the section "Isover Profi"
Warming and soundproofing of the floor
In order to insulate floors with high quality, the manufacturing company has developed two types of special materials - Isover Floor and Isover Floating Floor, which have different technical and operational characteristics:
| The main parameters of the insulation | "Isover Flor" (plates) | Isover Floating Floor (slabs) |
|---|---|---|
| Thermal conductivity coefficient, at 10˚С, W / m × ˚С | 0,036 | 0,033 |
| Airborne sound insulation index Rw (dB) | 32 ÷ 36 | 37 |
| Moisture absorption at partial immersion in 24 hours, kg / m2, no more | 1 | 1 |
| Water vapor permeability mg / m × h × Pa | 0,3 | 0,3 |
| Insulation density, kg / m³ | 125 | 80 |
| Compressive strength at 10% deformation, kPa, not less | 8 ÷ 20 | 8 ÷ 20 |
| Flammability group | NG | NG |
| Thickness, mm | 30; 40; 50 | 20; 20; 30; 40; 50 |
| Width, mm | 600 | 1190 |
| Length, mm | 1200 | 1380 |
| Insulation volume in a package, m³ | 0,173; 0,216; 0,216 | 0,197; 0,296; 0,296; 0,328; 0,328 |
| Insulation area in the package, depending on the thickness, m2 | 5,76; 4,32; 4,32 | 9,85; 14,78; 9,85; 8,21; 6,57 |
| The number of mats in the package, depending on the thickness, pcs. | 8,0; 6,0; 6,0 | 6,0; 9,0; 6,0; 5,0; 4,0 |
These materials have a common purpose, and therefore similar characteristics. During their development, the manufacturer has achieved an optimal combination of damping properties and mechanical characteristics. Both types of insulation are easy to install, but the technology of their installation is different from each other.
Products not only insulate surfaces, but also significantly reduce the noise emanating from the insulated room for the one below the floor, and vice versa.
- "Isover Flor" Are slabs made of basalt fiber with increased rigidity. They are used for arranging a floating floor, as well as a floor on logs. The design of the floating floor provides great efficiency in creating a warm and quiet floor, since in it the insulation completely covers the entire surface. The material is adapted to high loads, so it can easily be laid under a concrete screed.
- "Isover Floating Floor"- This version of slabs made of glass fibers is intended to create a "floating" floor - a concrete screed that is not connected to the walls and base. For a more dense connection of the plates to each other, the manufacturer, upon the order of consumers, can manufacture products with a thorn-groove connection. However, bonded boards can only be used on perfectly leveled surfaces.
Products have high strength characteristics due to the technology of vertical arrangement of fibers.
"Floating" refers to a floor structure that is not fixed to a base, such as a floor slab.
If it is supposed to make a "wet" cement-sand screed covering the insulation, then the slabs laid on the base must be covered with a layer of waterproofing. This material is designed to protect the insulation from moisture penetration from the concrete solution. Waterproofing sheets are laid with an overlap of 200 ÷ 250 mm. Waterproofing is also provided between the base and the insulation layer - to prevent capillary penetration of moisture into the material.
Prices for insulation "Isover flora"
insulation Isover flora
In addition, when arranging any, before installing the insulation, it is necessary to install a damper tape around the perimeter of the room or narrow strips cut from insulation, 10 ÷ 12 mm thick, and a height that will exceed the level of the screed by 120 ÷ 150 mm.
After the screed hardens, it will be easy to cut off the excess damper strip. This element of the "pie" structure will enhance sound insulation, since the screed will not adjoin the walls and will not directly transmit noise vibrations. In addition, such a damper will keep the screed intact during linear expansion caused by temperature changes.
Isover materials for soundproofing buildings
To protect the house from external and internal noise, the company produces two types of specific material - Isover Quiet House and Isover Sound Protection. However, in addition to them, the above-mentioned universal heaters "Classic" and "Profi", which have characteristics that are quite suitable for this purpose, can also be used for this purpose.
| The main parameters of the insulation | Isover Quiet House (slabs) | "Isover Sound Protection" (plates) |
|---|---|---|
| Thermal conductivity coefficient, at 10˚С, W / m × ˚С | 0,038 | 0.038 ÷ 0.044 |
| Airborne sound insulation index Rw (dB) | 54 | 54 |
| Moisture absorption at partial immersion in 24 hours, kg / m2, no more | 1 | 1 |
| Water vapor permeability mg / m × h × Pa | 0,7 | 0,55 |
| Insulation density, kg / m³ | 15 | 15 |
| Flammability group | NG | NG |
| Thickness, mm | 50 | 50; 100; 50; 75; 100 |
| Width, mm | 610 | 610 |
| Length, mm | 1170 | 1170 |
| Insulation volume in a package, m³ | 0,5 | 0,5; 0,5; 0,714; 0,856; 0,714 |
| Insulation area in the package, depending on the thickness, m2 | 10,0 | 10,0; 5,0; 14,27; 11,42; 7,14 |
| The number of mats in the package, depending on the thickness, pcs. | 14,0 | 14,0; 7,0; 20,0; 16,0; 10,0 |
- Isover QuietHouse»
Isover Quiet House - this heat and sound insulator made of fiberglass is sold in plastic bags. The material has a high noise absorption index, therefore it is an excellent means for soundproofing walls and interior partitions.
In addition, the slabs are laid on horizontal surfaces - between floor joists, attic floor beams, in the space between the suspended ceiling and the floor slab, etc. Such installation will make the rooms not only quiet, but also warm, since the material performs two functions at once.
- "Isover SoundProtection"
"Isover ZvukoZashchita" are slabs formed from basalt fiber, which have a pronounced elasticity. Thanks to this quality, they are easy to install in a frame crate, installed in the form of a partition or fixed to the wall.
Soundproof boards can be used in combination with other insulation materials, installing them in two layers. This design will be especially effective for frame partitions.
This material is also perfect for attic floors, since the sound insulator layer not only does not allow extraneous sounds into the house, but also retains the accumulated heat, preventing it from leaving through the ceiling.
Most often, walls and partitions insulated with slabs are sheathed, since it is best suited for such structures.
- The slabs must fit tightly to each other or to the elements of the battens, as even small gaps can significantly reduce the level of sound insulation.
- It is best to cover the insulated wall with plasterboard sheets - it also absorbs sound waves well, resonates much less compared to wood-based sheets - plywood, fiberboard, chipboard, OSB, etc.
- Before plastering with plasterboard, mineral wool must be covered with a material that does not allow dust to enter the living quarters along with microscopic fragments of fibers. At the same time, such a membrane must act as a vapor barrier.
- If metal profiles are used for the frame, it is recommended to stick a vibration-proof tape on their outer surface before fixing the drywall, which will also help to reduce the noise level.
- The gaps allowed between the plasterboard sheets will reduce the soundproofing effect, therefore, during installation, you should try to ensure that they are not more than 2 ÷ 3 mm. If this was not achieved, it is best to use silicone and acrylic-based sealants to seal them, since they also have a soundproofing effect, do not crumble and adhere securely to the surface.
Materials for thermal insulation in baths and saunas
For the insulation of saunas and baths, a specific offer can be found in the assortment of materials from this manufacturer - these are rolled mats with the characteristic name "Isover Sauna".
This material is made from fiberglass and has a foil-coated front side. The main characteristics of "Isover Sauna" are presented in the table:
| The main parameters of the insulation | "Isover Sauna", mats in rolls |
|---|---|
| Thermal conductivity coefficient, at 10˚С, W / m × ˚С | 0,041 |
| Airborne sound insulation index Rw (dB) | 54 |
| Moisture absorption at partial immersion in 24 hours, kg / m2, no more | 1 |
| Water vapor permeability mg / m × h × Pa | vapor-tight |
| Insulation density, kg / m³ | 30 |
| Flammability group | G1 based on NG |
| Thickness, mm | 50;100 |
| Width, mm | 1200 |
| Length, mm | 12500; 6250 |
| Insulation volume in a package, m³ | 0,75 |
| Insulation area in the package, depending on the thickness, m2 | 15,0; 7,5 |
| The number of mats in the package, depending on the thickness, pcs. | 1,0 |
The features of this heat-insulating material include the following points:
- The mats consist of two layers: the main one, made of mineral wool based on fiberglass, and the outer one - of foil. In this case, mineral wool is characterized as a non-combustible material, and the foil coating belongs to the flammability class G1, since it can withstand temperatures on the surface up to 100 degrees, mostly due to the layer of glue that holds the foil. At higher heating, this layer loses its elasticity and, when directly exposed to a flame, can ignite, although it is self-extinguishing. To prevent this from happening, as well as to make the walls decorative, they are usually sheathed with wooden clapboard.
- Isover Sauna performs two functions: it is a good heat insulator and, at the same time, a vapor barrier that protects the mineral layer from abundant vapors, which are an integral part of a bath or sauna.
- The foil layer has the property of reflecting heat from the walls back into the room, which significantly increases heat conservation, which is so important especially for bathing conditions.
To understand the installation process, you can consider an approximate scheme for installing materials:
- The wall of a log cabin (there may well be any other wall of the bathhouse).
- Frame lathing from a bar. In this case, it is installed horizontally, but this is not essential.
- Insulation "Isover Sauna".
- Spacer plates that create an air gap.
- Internal cladding of premises from natural lining.
Installation of "Isover Sauna" on the walls does not differ much from the installation of conventional heaters, except for some nuances:
- The material is mounted between the racks in a spacer, with the foil side inside the room.
- The joints of the heat insulator plates with the guides and between themselves, as well as the remaining open front part of the guides, must be sealed with foil adhesive tape.
- Mats need to be cut only with a very sharp knife, otherwise the cuts will turn out to be uneven and when installing the insulation between the racks, unacceptable gaps are formed.
- On top of the insulation, counter-lattices perpendicular to the guide rails are installed. They will additionally press the insulation against the wall, create a ventilation gap between the foil surface and the decorative cladding, and become the basis for attaching the cladding. The thickness of the slats must be at least 25 ÷ 30 mm.
- The final stage is wall cladding with clapboard, which is fixed to the counter battens.
What is the thickness of the Isover material required for effective thermal insulation?
We hope that after getting acquainted with the assortment of Isover heaters, the purpose and characteristics of each type, the interested reader will be able to choose the optimal material for his needs. But here's another question - how thick should the insulation be so that it really fulfills its role, so that a comfortable microclimate is maintained in the premises?
To determine this, you will need to make some heat engineering calculations. Usually they are carried out by socialists, but for a private developer, a somewhat simplified algorithm for determining the thickness of thermal insulation is sufficient. Let's try it - you will see that everything is not so complicated.
The calculation is based on the fact that any building structure of a residential building must have a certain parameter - heat transfer resistance. This value (R) is expressed in m² × ° C / W, and the larger it is, the higher the thermal insulation capacity of the structure.
Specialists in the field of construction and heat engineering carried out the necessary calculations, on the basis of which the normalized values of thermal resistance were established for various regions of the country, in accordance with their climatic characteristics. This suggests that in order to maintain an optimal microclimate in residential premises at any time of the year, it is required that the heat transfer resistance of building structures is at least not lower than the normalized one.
The corresponding tables of normalized values are in SNiP, but it will be more convenient to use the schematic map below.
There is a special formula showing the relationship between the thermal conductivity of any material, the thickness of its layer, and the resulting heat transfer resistance.
R =h /λ
R- the required resistance to heat transfer;
h- the thickness of a particular layer;
λ - the tabular value of the coefficient of thermal conductivity of the material from which the calculated layer is made.
- Thus, knowing, for example, the thickness of a wall requiring insulation and the material of its manufacture, it is easy to find what thermal resistance it has.
- The same calculations are made for other layers of the structure if they affect the overall insulation of the wall. After the layer-by-layer calculation, the values are summed up.
- Then the total value must be compared with the normalized value set for your region. There will be a difference (usually very impressive), which the insulation material must make up for.
- Well, knowing the coefficient of thermal conductivity of the selected insulation, it is easy to determine the required thickness by the formula.
In words, it may seem difficult to someone, but with our online calculator, in which the necessary tabular values are taken into account and the necessary dependencies are added, the calculation will not be difficult.
The heat in the house directly depends on many factors, including the thickness of the insulation. The thicker it is, the better your home will be protected from cold and freezing, and the less you will pay for heating.
Calculate the cost of 1m2 and 1m3 of insulation in a pack and you will see that it is profitable to insulate your house with ISOVER quartz-based mineral wool. The money saved can be spent on insulating your home with another layer of quartz-based mineral wool, thereby making your home warmer, increasing its energy efficiency class and reducing heating bills.
In Russia, only ISOVER produces both basalt wool from rocks and natural insulation based on quartz for insulating private houses, summer cottages, apartments and other buildings. Therefore, we are ready to offer our own material for each design.
To understand the best way to insulate a house, you need to take into account several factors:
- Climatic features of the region in which the house is located. - The type of structure to be insulated.
- Your budget and understanding whether you want the best solution, insulation with an optimal price-quality ratio, or just a basic solution.
Mineral wool ISOVER based on quartz is characterized by increased elasticity, so you do not need any fasteners or additional beams. And most importantly, due to the shape stability and elasticity, there are no cold bridges, respectively, the heat will not leave the house and you can forget about the freezing of the walls once and for all.
Do you want the walls not to freeze and the warmth will always remain in the house? Pay attention to 2 key characteristics of wall insulation:
1. COEFFICIENT HEATCONDUCTIVITY
2. FORM STABILITY
Find out which ISOVER material to choose to make your home warmer and pay up to 67% less heating bills. With the ISOVER calculator, you can calculate your benefit.
How much insulation and how thick do you need for your home?
- How much does it cost and where is it more profitable to buy insulation?
- How much money will you save on heating monthly and annually thanks to insulation?
- How much warmer will your home be with ISOVER?
- How to improve the energy efficiency of structures?
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When insulating, it is important to correctly ensure the required thickness of the heat-insulating layer.
For this, the material is installed in both one and two layers.
1. Install thermal insulation into the structure.
With a clear distance of 600 mm, slabs such as ISOVER Classic
Plus with a width of 610 mm, a raspor is installed without fasteners.
With a non-standard step, the material is cut with a knife to the desired width.
The main thing is to leave allowances at the edges of 1–2 cm.
For quick cutting of material, use a knife with a blade length of 15 cm.
2. Due to its elasticity, the material fits snugly against the wall and frame, leaving no gaps or crevices.
Step 3. Installation of horizontal battens (with additional insulation)
On top of the vertical bars and the first layer of thermal insulation, a horizontal lathing is attached. Bars 50 x 50 mm are used.
The distance between the bars should also be 600 mm "in the clear".
Step 4. Installation of thermal insulation (with additional insulation)
Thermal insulation is installed in the horizontal lathing with a gap in the seams. This will eliminate the "cold bridges".
Step 5. Installation of hydro and wind protection
To protect against moisture outside the building
- On the outside of the crate, close to the thermal insulation, a hydro-windproof membrane ISOVER HB is installed.
- Installation is carried out with an overlap (recommended overlap of 10-15 cm).
- The membrane is attached to the rafters with a construction stapler.
- Membrane joints must be glued with mounting tape or construction tape.
Step 6. Ventilated gap arrangement
On top of the hydro-wind protection, a row of 20–50 mm thick bars is vertically installed, which also additionally secure the membrane.
Thus, an air gap is formed between the outer cladding and the waterproofing, which is necessary for ventilation.
Step 7. Installation of external cladding
Siding, lining, block house can be used as cladding.
INSIDE WALL INSULATION
The insulation technology coincides with the insulation outside the room.
Only the sequence of steps changes: 1 - Installation of the battens, 2 - Installation of thermal insulation, 3 - Installation of a vapor barrier membrane, 4 - Installation of a counter batten, 6 - Installation of inner lining with gypsum board sheets, clapboard or OSB.
Do you have any questions? Then look at the installation of the walls right now.
To eliminate heat leakage from the house through the walls, you can use thermal insulation. To do this, you need to choose a high-quality insulation that will have low thermal conductivity, resistance to temperature extremes and fire, have minimal vapor permeability and high moisture resistance. All these characteristics are fully possessed by the modern insulation Isover.
Isover features
This insulation is made on the basis of fiberglass, has a low weight and density, therefore, when using it, there is no weighting of the building structure. The material is pleasant to the touch, does not prick or irritate mucous membranes, it is easy to work with it even without special protective equipment.
Isover perfectly retains its original shape and easily withstands strong compression, which has absolutely no effect on its thermal insulation properties.
Suitable for insulation and sound insulation of walls (both inside and outside the house), floors, roofs. It can be installed under any finishing materials. With its porous structure, the material provides high sound insulation in the house.
Wall insulation
Installation of Izover is quite simple and within the power of any owner. To insulate the walls, you can use Isover in the form of slabs or rolls. It can be easily cut into the desired fragments with a knife, practically without scraps and waste. Do not forget to leave the required mounting allowances (five millimeters each) so that gaps and air pockets do not form in the mounting structure.
Next, a vertical crate is mounted on the wall, the dimensions of which must correspond to the dimensions of the insulation plates. The material is quite elastic, so it can be installed in the structure without additional fasteners. Make sure that the thermal insulation covers the entire structure without gaps or breaks.
For high-quality insulation of a house, it is necessary that the insulation always remains dry. This can be achieved with a reliable vapor barrier. Therefore, further, a vapor barrier should be fixed on the entire wall with a construction stapler, which will protect the insulation from moisture.
The next step is the installation of a horizontal additional lathing, which will leave the necessary gap between the vapor barrier membrane and the inner lining.
Having carried out insulation of the house with Izover, you will ensure a comfortable temperature in the building all year round, keeping warm in winter and preventing hot air from penetrating through the walls into the house in summer.
Both builders and manufacturers of insulation materials argue about whether it is possible to insulate houses from the inside, but they all agree that in most cases, insulating walls from the inside will not be the best solution - if possible, it is better to do the outer thermal insulation of the house. However, if there is no choice, you should carefully study the features and rules for choosing and installing insulation so that the internal thermal insulation is effective, safe and durable. How to insulate the walls of the house from the inside and how to do it?
Inside the premises, walls can be insulated only in cases where the facade of the building cannot be changed or there is no access to the outer surface of the wall. It is recommended to avoid wall insulation from inside the house because it has a number of significant disadvantages:
- The dew point is shifting towards the interior of the room. The wall begins to freeze through to its entire thickness, the cold meets warm air at the junction of the wall and the insulation, and condensation forms on its surface. This has many negative consequences: a fungus can develop on a wet wall, the effectiveness of the heat-insulating material decreases, it lags behind the wall, collapses; in addition, the decorative finish deteriorates.
- The frozen wall loses its heat storage properties. It becomes difficult to control the temperature of the air in the room - it begins to warm up faster due to the operation of heating devices or the ingress of direct sunlight into the window and cool down faster when ventilated.
- It is impossible to provide 100% thermal insulation, since it will not work to insulate the walls from the inside over their entire surface - there will be cold bridges at the intersection of the outer wall with the inner partitions.
- The humidity in the room rises. This, again, promotes mold growth and is generally unhealthy. To ensure good air exchange, you will have to constantly ventilate the apartment, which will lead to an increase in heating costs.
- The useful area of the apartment decreases - especially if, due to the climatic conditions in the region, it is necessary to install a thick layer of insulation for the walls of the house.
- If the work on thermal insulation is not carried out before the start of repairs in the room, it is necessary to dismantle all the decorative finishes, which complicates the work and makes it more expensive.
The most dangerous consequence of internal thermal insulation is condensation inside the room, which leads to accelerated destruction of walls and deterioration of finishing materials. This can be partially avoided by accurately calculating the required thickness of the insulation layer and choosing the right material. Thus, insulating a house from the inside is expensive and unsafe, but sometimes inevitable.
How to avoid condensation
If you still had to deal with internal thermal insulation, then before figuring out how to insulate a house from the inside, you need to understand whether negative consequences can be avoided. Dryness of the walls inside the house can be ensured by protecting the dew point from moisture.
For this you need:
- Use a quality multi-layer waterproofing membrane. Plastic wrap will not work. In addition, it must be properly laid - with an overlap, with sealing of the joints.
- Choose a heater with a minimum vapor permeability. If the material from which the walls of the house are made, this indicator will be higher, then the moisture formed between the insulation and the surface of the wall will not condense, but will come out.
- Mount the insulation close to the wall. To do this, glue on it must be applied in an even continuous layer, and not beacons.
- Provide forced ventilation of the room, as well as install windows with air exchange valves.
- Calculate the exact thickness of the insulation layer. You cannot focus on the average parameters, since it is possible to properly insulate the walls only taking into account all the characteristics of a particular material, room and climatic features of the region.
- Treat the wall to be insulated with antifungal and antibacterial agents. You can use a special antiseptic primer. You can start working only after the wall surface is completely saturated and dry.
When insulating an apartment from the inside, it is very important to get rid of all possible cold bridges. They are formed at the joints of the insulation slabs and in those places where the wall is connected to the ceilings and internal partitions. To improve the efficiency of insulation, it is necessary to lay the thermal insulation material with an approach to the internal walls, floor and ceiling.
The choice of thermal insulation material and insulation installation technology
Mineral wool
It is not recommended to choose this material, since it will not work to insulate the wall in the apartment from the inside effectively enough with its help. However, cotton wool is the easiest to use and cheaper than other options, therefore, they often resort to using it.
Vata comes in two varieties:
- rolls;
- basalt slabs.
If there is no other choice, it is better to use cotton wool in the form of slabs - this insulation is denser, has better thermal resistance, and does not settle over time. The rolled type of cotton wool has a too high vapor permeability indicator, absorbs moisture well, so the walls insulated with it will probably get wet. However, the probability of moisture penetration under the insulation is also when using plates with a density of 75 kg / m3. You can reduce the risk of condensation by using a good vapor barrier and installing the insulation correctly.
Thermal insulation from the inside with mineral wool is carried out as follows:
- At a distance from the wall surface, a frame is constructed from wooden battens or an aluminum profile.
- The first layer of mineral wool is placed under the frame. It is necessary to glue it to the wall as tightly as possible.
- The second layer of basalt wool slabs is laid between the frame slats with displacement of the joints relative to the first layer.
- A layer of vapor barrier membrane is laid.
- Drywall is mounted on the frame.
Due to the characteristics of the vapor barrier mineral wool, special attention must be paid when the internal insulation of the walls of the house is carried out. You cannot use plastic wrap, you need a more efficient vapor-tight multilayer membrane. It can be attached to a wooden frame with a stapler, always with an overlap; it is glued to the profile with double-sided tape.
The overlap when laying the membrane should be at least 100 mm, the joints should fall on the frame elements and be glued securely. The vapor barrier must go over surfaces adjacent to the wall. Places of contact of the membrane with surfaces should be additionally sealed. A liquid sealant is applied to a wall, pipe or other structure, then the membrane is pressed against the junction; after the sealant dries, the membrane is fixed with tape.
High-quality installation will reduce, but will not completely eliminate the risk of condensation when using mineral wool. It is better to consider other, polymer, types of insulation for the walls from the inside.
Expanded polystyrene and EPS
Expanded polystyrene, or polystyrene, is much better for insulating a wall in an apartment from the inside. This is facilitated by its following characteristics:
- low thermal conductivity due to the presence of air in the cells of the material;
- low vapor permeability and almost no hygroscopicity;
- high strength, including compression and rupture;
- small weight;
- ease of processing with your own hands - you can cut the material with an ordinary knife.
Plain or extruded polystyrene foam of sufficient density, even with a relatively small thickness, will provide sufficiently effective thermal insulation of the room. It is recommended to choose it not only because of the ease of installation, but also since it can be used to insulate the apartment from the inside with its help most effectively: it does not allow moisture to pass through, so that condensation will not appear. The main thing is to properly glue the foam plates, sealing the joints and ensuring a tight fit to the wall.
When using expanded polystyrene for thermal insulation of residential premises, it is important to take into account some of its disadvantages. So, it practically does not protect against noise. In addition, when it burns, it releases toxic compounds into the air. Another disadvantage is the high cost of EPS, but it is compensated by the fact that you do not need to lay a vapor barrier membrane, and you will definitely not have to redo the insulation due to the destruction of the insulation, as in the case of improper installation of stone wool.
Polystyrene insulation for walls inside the apartment should have a high density - 25-30 kg / m3. Density can be determined by marking, which looks like "PSB-S-25", where 25 means the desired parameter.
Installation of expanded polystyrene plates on the inner wall is carried out as follows:
- The surface of the wall is cleaned, primed and dried.
- Insulation plates are glued in rows with an offset of the joints. It is advisable to use polyurethane glue, which is applied to the entire surface of the expanded polystyrene board.
- Additionally, the plates are fixed with special plastic dowels.
- The joints are sealed with silicone sealant, large gaps are filled with polyurethane foam.
- Reinforcing fiberglass is laid on top of the insulation with an overlap. On top of it, you can lay plaster for decorative finishing. Another option is to immediately glue drywall instead of reinforcement.
There is another installation method. On the long ends of the PPS plates, grooves in the form of corners are selected. Two plates are joined, the seam is sealed. Then a wooden board is inserted into the groove. The resulting structure is fixed to the wall with self-tapping screws. This method is more convenient, since in this case it is possible to insulate the room faster and more economically. In addition, the boards can be used as a frame for attaching drywall.
Should I consider other options
There are also more modern insulation for walls from the inside - polyurethane foam, thermal insulation plaster, foamed polyethylene and even ceramic-based thermal paint. Among them, only the first material is worthy of attention; other options are actually of little use for insulating an apartment from the inside. Polyurethane foam is an ordinary foam, similar to assembly foam, which is applied to the insulated surface using a special sprayer.
The material is good because it reliably adheres to any surface, penetrates into all cracks, is monolithic and vapor-proof. It quickly solidifies and does not form any cold bridges. However, polyurethane foam is quite expensive, and you won't be able to work with it on your own.
Thus, if it is necessary to insulate the walls from the inside, it is best to use expanded polystyrene. This heat insulator has the most suitable characteristics, and it is not difficult to install it with your own hands. Subject to the technology of insulation, it will effectively protect the house from the cold.