Izover insulation: technical characteristics, reviews, approximate price

Increasing the thermal protection of a private house during construction is an important stage of work, while significant volumes are insulated, and the cost of thermal insulation materials becomes the decisive factor. One of the popular inexpensive types of heat insulators is Izover insulation, the technical characteristics of which are excellent for use in individual housing construction.

It should be noted that Isover is a modern, more technologically advanced version of classic glass wool, which was widely used during the Soviet period for thermal insulation of utility pipelines for heating and hot water supply systems. Isover is produced in several modifications depending on the purpose; each brand in the series has different parameters and differs in installation methods. Knowledge of the characteristics and varieties of Izover will help you choose the right product without overpayments, install it in compliance with the technological process, which is the main requirement when installing any type of insulation.

Izover - appearance

What is Isover, release forms

The founder of the Isover brand is the international holding Saint-Gobain, whose roots were laid back in the 17th century. Currently, the corporation includes more than 100 manufacturing companies and research centers conducting research in the construction industry. The company appeared on the Russian market 20 years ago; currently, a plant for the production of insulation operates in Yegoryevsk, Moscow region. In 2011, the Saint-Gobain holding bought the Chelyabinsk Minervata plant, and it began producing insulation materials from rock basalt fibers.

Isover is produced by processing sand (quartz), glass cullet, and mountain minerals (basalt); after melting the raw materials in a high-temperature furnace, the mass is drawn into fibers using TEL technology to produce threads with a cross-section of 4 - 5 microns and 110 - 150 microns in length.

Note: Saint-Gobain is the only manufacturer in the country that has a patented crimping technology that allows it to produce fiberglass products with high mechanical strength.

Hard fiberglass is placed in slabs, soft fiber is rolled into mats and rolls; products differ in thickness and dimensional dimensions, depending on the purpose and production technology.

The typical thickness of a single-layer or two-layer Izover is 50 - 100 - 150 mm, rolls are produced with a total area of 2 - 20 m2, their usual width is 1200 mm, length from 4000 to 12000 mm. The area of one Isover slab does not exceed 1 m2, its overall dimensions are kept within the limits of 600x1200 mm, the number in a pack is from 2 to 14 pieces.

Places for insulation of a private house

Varieties

The ISOVER insulation line includes several items. Each type of produced material has its own characteristics, which determines the scope of application. In particular, the following categories of insulation can be found on the market:

Pro.
Classic.
Classic stove.
Sauna.
Optimal.
Extra.
Sloping form.
Ventilated façade.
Plaster facade.
Floating floor.
Soundproofing.

Basic characteristics can be found out from the markings indicated on the packaging. It looks like this:

OL-E . The only material in the series that is used for outdoor use. The material has high density and non-porous structure.
KL . Soft slabs designed for insulation of internal partitions and ventilated facades.
A.L. _ Insulation with this marking has a layer of aluminum foil on the surface that serves as a vapor barrier.
KT . This is a roll insulation used to insulate large areas.

Knowing these features, you can easily select insulation to solve specific construction problems.

Scope and characteristics of Izover

Fiberglass and mineral wool insulation materials are widely used in individual and civil housing construction; they are used to protect roofs, walls, ceilings, floors and partitions of cottages and country houses, baths and saunas from heat loss, and to insulate hot water supply pipes indoors for heating and hot water needs. water supply, thermally insulate ventilation ducts, chimneys.

Isover has the following characteristics:

Is a brand that supplies rigid fiberglass boards with a tensile strength of 15 kPa and a compressive strength of 60 kPa.
Mineral wool is produced from natural raw materials (quartz, basalt), therefore it is environmentally friendly and harmless to human health, it has been awarded the EcoMaterial Absolute environmental group and the international eco-friendly certificate ISO 14001:2004.
The thermal conductivity coefficient (CT) depends on the shape of the product and lies in the range of 0.03 - 0.045 W/(m•K), this indicator for glass wool is slightly higher than for expanded polystyrene (foam) and basalt fiber.
The vapor permeability of products is also related to the shape and has an indicator of 0.3 - 0.55 mg/m•h•Pa, this parameter indicates that the heat insulator allows air to pass through well.
The noise reduction of a 100 mm sheet is 45 - 55 dB, which means that glass wool has high sound insulation.
The moisture absorption coefficient of glass wool when partially immersed in water for 24 hours is 1% or 1 kg/m2; material completely immersed in liquid for 72 hours absorbs 10% of its weight in liquid, while its thermal insulation properties drop sharply. To combat this phenomenon, water repellents with water-repellent properties are introduced into the heat insulator.
The density of Isover depends on the form of release (soft mats or hard sheets) and ranges from 11 to 155 kg/m3.
Mineral wools are classified as non-flammable; in accordance with GOST 30244-94 they are assigned the flammability index NG.
The service life of Isover mineral wool, established by the manufacturer, is 50 years without loss of its physical and chemical properties.
Mineral wool is biologically stable, prevents the formation of mold and bacterial colonies; insects do not like to breed or be present in a mineral environment.

Laying options for Izover

Video description

The video shows the technology of insulating the walls of a frame house with isover:

Technology for installing isover on the side of the building facade

The sheathing is constructed in increments of a centimeter narrower than the width of the insulation. The slabs are laid inside, and a counter-lattice is attached on top. It should provide an air gap. A waterproof and windproof membrane is attached to it. And the finishing decorative trim (siding or lining) is already attached to it.

Soundproofing technique using isover

To soundproof the lower surfaces, floating floor technology is used. It helps reduce indoor noise levels by 50%. It is called so because the materials used for finishing do not come into close contact with the side walls. Therefore, noise waves are not transmitted to them.

Technology for laying floating floors Source sk.decorexpro.com

To build such a structure, a layer of vapor barrier is first spread on a reinforced concrete base, then an isover is laid on it. Waterproofing material is spread on top. The top of such a cake can be filled with concrete screed or covered with gypsum sheets. Even before starting work, damper tape must be glued to the walls along the entire perimeter of the floor. It will ensure the formation of a technological gap that will not allow noise to move across the floors. The width of the tape should exceed the thickness of the screed by 2-3 cm.

Advantages and disadvantages

The positive qualities of insulation are directly related to its physical properties; the advantages of Isover include:

The low cost of production, which gives tangible advantages over other insulation materials, is widely used in individual construction for thermal insulation of residential buildings, bathhouses, and outbuildings.
Light weight and elasticity thanks to the Multipack technology create additional convenience during transportation; soft cotton wool in rolls is compressed during production, after unfolding it increases in volume by 5-6 times and completely restores its working shape.
The manufacturer produces an extensive line of products in a wide price range, designed for various purposes; the consumer has the opportunity to choose between budget fiberglass and a more expensive basalt product.
The physical properties and forms of mineral wool make it possible to use them for thermal insulation of any complex contours and planes: pipelines of various diameters, chimneys, ventilation ducts.
It is convenient to work with insulation; thanks to its low weight and release form, significant volumes can be covered with rolls or sheets in a short time. Compared to traditional glass wool, the installation speed increases by 2 times due to the fact that additional fasteners are not required when laying in the frame.
Mineral wool material not only provides thermal insulation, but also absorbs noise well, performing a double useful function; brands specifically designed for sound protection are sold in the retail chain.
High elasticity due to advanced production technology ensures that the material does not shrink, maintaining unchanged thermal insulation characteristics throughout its service life.

In addition to many positive qualities, Isover has quite noticeable disadvantages:

Since mineral wool absorbs moisture well, it cannot be used in objects with high humidity and underground. To protect against moist air, be sure to place a vapor barrier film under the insulation or ventilate the space between the shells of the thermal insulator and the object.
When laid, budget soft mats require a rigid frame, otherwise they become deformed and cease to perform thermal insulation functions.
When laying glass wool, you should use protective measures against fibers that have a negative effect on the eyes and mucous membrane of a person, irritate the skin, and cause itching.
If glass wool is used for interior decoration, measures should be taken to ensure reliable sealing and insulation from the environment, otherwise small fibers of glass will penetrate into the room, causing discomfort.
Some environmentalists doubt the environmental purity of mineral wool, pointing out that during their production, binding resins are added, which emit small amounts of formaldehyde that is harmful to health.

Technical characteristics of some brands
How and from what ISOVER mineral insulation is made | #IndustrialScale

Using wool of different densities for insulation

The choice of insulation according to the indicator under consideration depends on the place of its use. It is not always necessary to overpay in order to get the desired result. Most often, the facade, walls, roof and floor are insulated. These are the options that are worth considering.

Facade

When selecting insulation for a facade, you need to pay attention to the mass and density of mineral wool. For most buildings, weighting is very undesirable. It is also worth paying attention to the possibility of subsequent finishing, because this indicator is also influenced by

So:

It is also worth paying attention to the possibility of subsequent finishing, because this indicator also affects this. So:

If the facade is equipped with a ventilated one, then a sufficient density is 45-100 kg m³. Here the cotton wool is laid into the sheathing and there will be virtually no stress. The main tasks for this type are to maintain its shape and not sag under its own weight, and the indicated indicator is enough for this.
If the facade is to be plastered over insulation, then the density should be above 100 kg m³, optimally from 145 to 165. This will allow the use of any types of plaster mixtures, including bark beetle, barenkom and even mosaics. Since this mineral wool will have to withstand heavy loads during installation, it must be securely fastened; for this, a system with dowels is used in combination with adhesive fastening.

Wall insulation

In this case, the selection is made based on ease of installation, that is, the density should be at least 30-45 kg m³. In this case, you need to insulate from the inside; MDF boards or drywall should be screwed onto the material on top. In order to mount such mineral wool, you need a lathing; rolls or sheets are placed in it.

Roof

Since roof insulation work is carried out at heights, the main criteria when selecting mineral wool are light weight and ease of use. Material with a density of 30-35 kg m³ can be pleased with these qualities. Its sound and heat insulation properties will be excellent, and at the same time light weight. Installation can be carried out using two methods:

Using a construction stapler.
In the lathing with a vapor barrier closure.

In both the first and second cases, it is necessary to cover the insulation with finishing material on top.

The selection of mineral wool in this case depends on the type of floor finishing. So, if these are sheet materials, for example solid boards, laminate, etc., then a density of more than 30-45 kg m³ is not needed. After all, there will be no pressure on the cotton wool; it is placed between the lags.

But now manufacturers offer material with an indicator of 200-220 kg m³; such wool can be mounted on the base and filled with cement screed on top. Of course, the price of such material is quite high, but the ease of handling is the greatest possible.

Izover insulation marking

It is quite difficult to understand the markings that Saint-Gobain puts on its product; depending on the physical properties, the following symbolic and numerical designations are found:

KT - flexible rolled mats with a density of about 15 kg/m3, used for insulation of joist floors, interfloor and ceilings, the KT37 variety has a thermal conductivity of 0.037 W/(m•K), KT40 - 0.040 W/(m•K). The KT brand is supplied in rolls with a thickness of 50 or 100 mm, the standard length of KT37 is 6300 mm, width is 600 mm (KT40 has dimensions of 7000x610 mm), the compression ratio of the roll is 1:4 (volume 0.16 m3 when packed and 0.71 m3 when packed). open).
KL - slab heat insulator 50 or 100 mm thick with an average density of 20 kg/m3, designed for frame installation without fastening with dowels, parameters of the common brand KL34 - thermal conductivity 0.034 W/(m•K), vapor permeability - 0.53 mg/m•h •Pa, upon delivery the packaging is compressed twice, return after compression is 98%.
RKL - rigid sheets reinforced on both sides with glass fiber, density 60 kg/m3 and thermal conductivity 0.030 W/(m•K), the RKLA variety has a tongue-and-groove connection and, during installation, serves as additional wind protection.
SKL - semi-rigid sheets with a density of 55 kg/m3 and a thermal conductivity of 0.031 W/(m•K).
RKL-EJ - sheets of increased rigidity, mounted using the ridge method with a density of 95 kg/m3 and CT 0.031 W/(m•K).
VKL - rigid sheets with a density of 130 kg/m3 and a thermal conductivity of 0.032 W/(m•K).

Important: From the above digital marking, it is enough for the consumer to remember that the letter T means rolled material, and the symbol L indicates the plate, the digital designation is equal to the thermal conductivity indicator, the lower it is, the better the product retains heat.

The Russian-language Izover marking is often used, in which the symbol P means slabs, M - roll insulation, AL - reinforced foil covering, OL - fiberglass (fiberglass) base.

Table 1

Material	Density, kg/m3	Dry thermal conductivity coefficient λ, W/(m oC)	Calculated thermal conductivity coefficients in wet condition*
λA,W/(m oC)	λB,W/(m oC)
Concrete
Reinforced concrete	2500	1,69	1,92	2,04
Aerated concrete	300	0,07	0,08	0,09
400	0,10	0,11	0,12
500	0,12	0,14	0,15
600	0,14	0,17	0,18
700	0,17	0,20	0,21
Brickwork
Ordinary clay on cement-sand mortar	1800	0,56	0,70	0,81
Silicate on cement-sand mortar	1600	0,70	0,76	0,87
Ceramic hollow core with a density of 1400 kg/m3 (gross) on cement-sand mortar	1600	0,47	0,58	0,64
Ceramic hollow core with a density of 1000 kg/m3 (gross) on cement-sand mortar	1200	0,35	0,47	0,52
Silicate eleven-hollow on cement-sand mortar	1500	0,64	0,70	0,81
Silicate fourteen-hollow on cement-sand mortar	1400	0,52	0,64	0,76
Tree
Pine and spruce across the grain	500	0,09	0,14	0,18
Pine and spruce along the grain	500	0,18	0,29	0,35
Oak across the grain	700	0,10	0,18	0,23
Oak along the grain	700	0,23	0,35	0,41
Insulation
Stone wool	130-145	0,038	0,040	0,042
Expanded polystyrene	15-25	0,039	0,041	0,042
Extruded polystyrene foam	25-35	0,030	0,031	0,032

*λA or λB is taken into account depending on the city of construction (see table 2).

Product line, application features and characteristics of Isover

Isover, based on glass and basalt fibers, is produced for various purposes, so the products consist of almost three dozen items, each with its own profile name depending on the object being insulated. It is useful for a consumer who has decided to purchase Izover insulation to study its technical characteristics, look at the photo, find out prices on the manufacturer’s website, and master installation methods.

On the market, products are marked with markings indicating their physical parameters, and are also divided into areas of application to facilitate the buyer’s choice; when ordering a large batch, the company can supply the goods in the sizes specified by the customer.

Classic series parameters

Classic

This brand of Izover based on glass wool is available in two varieties: Classic in rolls and Classic Plate; when using a product from Saint-Gobain for thermal insulation of an individual house, heating costs can be reduced by up to 65% compared to an uninsulated building.

Izover Classic parameters:

The slab is designed for thermal insulation of external walls, ceilings and interior partitions, provides double insulation against heat loss and noise interference, the rolled material is laid between the floor and attic joists.
The CT of the slab insulator at 10 °C is 0.038 W/(m•K), at 25 °C - 0.41 W/(m•K), this indicator for thermal insulation properties with a mineral wool thickness of 50 mm is equivalent to 950 mm of a brick wall. Rolls and mats at similar ambient temperatures have a thermal conductivity of 0.041 - 0.044 W/(m•K), respectively.
Density: 15 kg/m3.
Flammability according to GOST 3244-94: NG.
Vapor permeability: 0.55 mg/m•h•Pa.
During installation, the sheets are placed in the frame without additional fastening, they have 100% recoverability, and due to their elasticity they fit tightly to the frame without cold bridges.
Standard sizes are 50 or 100 mm sheet 610x1170 mm, the package contains 14 or 7 pieces with a volume of 0.5 m3 and an area of 10 or 5 m2.
Rolls are compressed 6 times, produced in 50 mm thickness with dimensions of 1220x6150 or 1220x8200 mm with an area of 15 or 20 m2 and a volume of 0.75 or 1 m3, respectively.

Parameters of the Façade series

Facade

Plates based on basalt fiber provide a high level of thermal protection of the building due to the uniformity of the thermal protective layer and its high mechanical strength; the Izover Facade brand has the following density and characteristics:

Thermal conductivity: 0.036 - 0.041 W/(m•K).
Tensile strength in the perpendicular direction: from 15 kPa, compressive strength: up to 45 kPa at 10% deformation.
Density: 125 kg/m3.
Flammability according to GOST 30244-96: NG.
The Façade brand has a standard water absorption of 1 kg/m2 when partially or completely immersed in water for 24 hours.
Packaged in slabs measuring 60x1000 mm, thickness 50 or 100 mm, in quantities of 4 or 2 pieces with a volume of 0.12 m3 and an area of 2.4 or 1.2 m2, respectively.

In addition to this brand, the manufacturer produces a product made from basalt fiber, Izover Facade Master, which has similar characteristics and Izover Plaster Facade based on glass wool, which is the lightest base for plaster, with the following distinctive features:

Fire hazard class KMO, flammability class - NG.
Tensile strength in the perpendicular direction relative to the front surface: from 15 kPa.
It has a high modulus of elasticity and increased vapor permeability thanks to the use of the technological development of Weber therm Comfort from the Saint-Gobain company.
CT: 0.038 - 0.043 W/(m•K).
Tile insulation is supplied with a thickness of 50, 100 and 150 mm in packs of 8, 4, and 2 pieces, with an area of 5.76, 2.88, 1.44 m2, respectively, with a volume of 0.288 m3 and 0.216 m3 for sheets with a thickness of 150 mm, their standard size 600x1200 mm.

To insulate facades based on mineral wool, another brand, Izover Ventfacade, is produced in slabs with a standard thickness of 30 mm, measuring 1190x1380 mm, 8 pieces per pack with a total area of 13.14 m2 and a volume of 0.394 m3. VentFacade has a thermal conductivity of 0.032 - 0.037 W/(m•K); when manufactured to order, it can be covered with black fiberglass on one side.

Standard series - parameters

Standard

Isover Standard based on basalt fiber provides a high level of thermal protection, due to its high elasticity it guarantees the absence of air pockets, during installation it is designed for fixation to the surface with umbrella dowels, its main technical indicators:

CT depending on the temperature values of the environment: 0.035 - 0.039 W/(m•K).
Flammability group: NG.
High air permeability of the order of 80 10-6 m3/m•C•Pa.
Vapor permeability: 0.3 mg/m•h•Pa.
Basalt wool is supplied in slabs of 50 or 100 mm with dimensions of 600x1000 mm, in a pack of 8 or 4 pieces, respectively, with a volume of 0.24 m3 and an area of 4.8 m2 or 2.4 m2.

Features of Warm House and other types of Izover

Warm house

Warm House insulation is produced in mats and is made of fiberglass, compressed 6 times, its main parameters:

Thermal conductivity: 0.04 W/(m•K).
Vapor permeability: 0.55 mg/m•h•Pa.
The thickness of the roll insulator is 50 (two mats in a pack) or 100 mm, width is 1220 mm with lengths of 5490 or 7000 mm, their area is 13.4, 17.1 m2 with a volume of 0.67 or 0.85 m3.
Izover Warm House Plate has standard sizes of slabs in packaging with a thickness of 50 or 100 mm - 610x1170 mm with an area of 5 or 10 m2 and a volume of 0.5 m3.
Vapor permeability: 0.55 mg/m•h•Pa.
Density 11 kg/m3.
Flammability: class NG.

Frame house

Thermal insulator Frame house based on basalt mineral wool is designed for insulation of any frame structures of external walls, partitions, pitched roofs, floors and ceilings, has good elasticity and provides additional protection from noise, its main parameters:

Thermal conductivity: 0.038 W/(m•K) at an ambient temperature of 10 °C.
Tensile strength in a direction parallel to the front surface: from 4 MPa.
Water absorption: no more than 1 kg/m2.
Flammability: class NG.
Packaging: slabs 50 or 100 mm thick, size 600x1000, 8 or 4 pieces each, with an area of 4.8 or 2.4 m2 and a volume of 0.24 m3.

Brands Frame House and Warm Roof - product properties

Master of Warm Roofs

Isover Warm Roof based on basalt fiberglass is designed for insulating attics and pitched roofs; thanks to the elasticity of the slab, it retains its geometric dimensions for a long time and does not lose its physical characteristics under the influence of temperature changes and high air humidity. Main characteristics of insulation:

CT: 0.036 W/(m•K) at 10 °C ambient.
Tensile strength in the longitudinal direction: from 6 MPa.
Density: 15 kg/m3.
Compressibility under pressure 2000 Pa according to GOST 17177-94: 25%.
Flammability: category NG.
Dimensions and packaging of tiles: thickness 50 or 100 mm, in a package of 8 or 4 pieces with dimensions 600x1000 mm, area 4.8 or 2.4 m2 and volume 0.24 m3.

Parameters of the material SoundProtection

SoundProtection

The ZvukoZashchita brand in the form of fiberglass-based tiled elements is intended for use as sound insulation in interior partitions, ceilings and other frame-type structures, and has the following features:

Noise absorption on each side for a partition 75 mm thick, consisting of a profile metal frame for plasterboard and covered with plasterboard sheets of a standard thickness of 12.5 mm: 45 dB.
Density: 15 kg/m3.
Fire hazard class KO, flammability class NG.
Thermal conductivity coefficient: 0.038 - 0.044 W/(m•K).
Vapor permeability: 0.5 mg/m•h•Pa.
Slab dimensions: 50(75.100)x610x1170 mm, in packages of 20, 16 and 10 pieces with an area of 14.27, 11.42 and 7.14 m2 and a volume of 0.714 or 0.856 m3.

Pro Properties

Pro

The roll-type Profi product is produced on the basis of fiberglass, intended for use in individual housing construction for insulation of pitched roofs, external walls, frame-type partitions, and has the following characteristics:

Thermal conductivity coefficient: 0.037 - 0.042 W/(m•K).
Density: 28 – 36.5 kg/m3.
Vapor permeability: 0.3 mg/m•h•Pa.
Release form: mats or slabs, mats with a thickness of 50, 100, 150 mm, overall dimensions 1220x4000 (5000) mm, area 12.2, 6.1, 4.88 m2 and volume 0.61 or 0.73 m3, overall dimensions slabs 610x1000 mm.
To facilitate cutting, special markings are applied to the mats.

Installation of thermal protection

A wide range of uses implies several options for working with Izover materials. There are 4 technological options in total:

Metal frame structure.
Wooden building.
Using staples.
On the plinth.

When installing thermal protection, seek help from a specialist.
When assembling a thermal insulation complex, the physical properties of the materials should be taken into account. It is worth providing additional protection from moisture using special films. When laying a roofing or wall pie, a certain order of layers should be observed. The vapor barrier is usually pulled from the inside to prevent the formation of condensation. The waterproofing is installed outside to protect against precipitation.

It is very difficult to choose the best of the many varieties of Izover products. Each type has its pros and cons. However, due to the diversity of the assortment and the optimal price-quality ratio, this product is recognized as the most popular.

All about insulation and thermal insulation Izover:

Approximate price of popular brands on the Russian market

Manufacturer Saint-Gobain supplies the domestic market with a wide range of products based on two types of mineral wool - fiberglass and mountain basalt, the latter is more expensive due to its higher environmental friendliness, causing less harm to health during installation and operation.

Prices for slabs and rolls differ among different suppliers of goods; the cost of one package is usually indicated; the average price for some types is:

60 rubles per 1 m2 of glass wool slab or roll 50 mm thick (Warm House), the cost of a product with a thickness of 100 mm is 2 times higher;
85 rubles per 1 m2 of 50 mm thick basalt wool slab (Warm Roof, Warm Walls, Quiet House series);
125 rubles 1 m2 for quartz thermal insulation with a foil vapor barrier in one roll, intended for insulation of saunas and baths (Warm Sauna).

Price list for some brands
Effective solutions for thermal insulation using ISOVER

Conclusion

In conclusion, I can say that the price of this material is consistent with its high performance properties. You can once again verify this by watching the video in this article . If you have any questions regarding its use or, conversely, you want to share your own experience, please write about it in the comments to the article.

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August 28, 2016

Insulation materials, Thermal insulation

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