The choice of non-combustible insulation. Varieties and labeling

Non-combustible insulation allows not only to isolate the house from heat exchange with outdoor air, but also ensures safety: the risk of fire, fire is minimized. Modern materials are fire resistant and can be used for industrial and domestic buildings of any type (including steam rooms, baths, chimneys, fireplaces and boilers).

Oxygen index

The oxygen index is a characteristic of the fire safety of a material, which shows the minimum amount of oxygen per unit volume of insulation. According to the oxygen index, there are several flammability thresholds:

• 40% - composite polymers;
• 31% - fibrous and cellular non-combustible heaters;
• 20% - materials that burn well in air.

Classification

Heat-insulating fibrous materials are non-combustible mineral insulation made of glass, basalt fiber, which can withstand +500°C. They are used in specific places:

• for insulation of pipelines in the form of cylinders with foil reinforcement;
• thin mats, plates for flashing plastic windows;
• basalt - for insulation of walls, roofs and floors.

According to GOST, wool is divided into the following categories: stone, glass, slag wool. According to the same GOST, all types of cotton wool have a combustibility of the NG class - the oxygen content index is at least 30%. Let's consider each type in more detail.

Glass wool is made from fiberglass by melting glass and drawing the fibers from it.

This material is very fire resistant, has low hygroscopicity, good sound insulation and low thermal conductivity.

Glass wool retains its properties when exposed to temperatures ranging from -60°C to +450°C.

The strength is higher than that of stone wool, but the fibers are still fragile, so it is better to wear gloves and goggles to work with it.

Cotton wool on basalt fiber is made by melting rocks at high temperature (up to 1500°C). The fibers are linked by the addition of special substances, which gives durability. Basalt wool is not deformed, does not react to acid-base environments.

It is produced by processing slag and obtaining vitreous fibers.

Such a heater has a high thermal conductivity and absorbs moisture, reacts to dampness and creates an environment aggressive for metals. It has one advantage - low price.

Linen insulation

It is also worth mentioning the novelty of modern production in the form of Hot-Flax linen insulation. It is pure linen (fiber) without mineral wool impurities, which has a flame retardant treatment and does not support combustion at all.

The oxygen index is 37%, approaching polymeric, self-extinguishing materials.

Bulk

Loose heaters are expanded clay, perlite, vermiculite, which are very resistant to fire and have a flammability class of at least G1 - an oxygen index of at least 30%.

Expanded clay is obtained by firing clay. The granules are heavy, with high thermal conductivity. This non-combustible thermal insulation is of loose type, therefore it is inconvenient to install. However, it is cheap and environmentally friendly. Expanded clay is characterized by the size of fractions. So, an option up to 5 mm is sand, an indicator up to 40 mm is gravel. If large fractions are crushed, then crushed stone is obtained.

Thermal and fire-resistant qualities when using expanded clay are significantly increased. This is especially true for hard-to-reach places where such a heater can simply be poured. Expanded vermiculite is used for walls in low-rise construction. It is resistant to microorganisms, environmentally friendly, but has low moisture resistance.

Perlite is presented in the form of volcanic glass granules. The fraction ranges from 1 to 10 mm. Due to its light weight and the ability to adjust the thickness of the protective layer, it serves as an excellent heat insulator.

In practice, 30 mm of perlite is equivalent in effect to 150 mm of brick. Perlite is applicable for thermal insulation of roofs and walls, it can be an alternative to brickwork. The disadvantage is that it absorbs moisture well and is fragile.

Cellular types

Cellular non-combustible materials resemble frozen foam in structure. This type of insulation can withstand high temperatures.

Inorganic type insulation with a cellular structure similar to soap suds. The basis is crushed glass, which is mixed with carbohydrate. Foam glass has the following positive characteristics:

• environmentally friendly, durable;
• resistant to fire and temperatures;
• does not absorb moisture and does not pass steam;
• not susceptible to acids, bacteria, fungi, does not attract rodents.

Foam glass can be used in almost any industry - construction, chemical, energy, engineering industries. The only drawback is the high price.

Foam glass has a significant drawback - a lot of weight, which complicates installation.

Polyurethane foam as a non-combustible material has a serious list of qualities:

• when exposed to open fire, it does not emit harmful substances;
• low moisture absorption coefficient (1.5%);
• not afraid of temperature changes and mechanical loads;
• Great for sealing and thermal protection.

This convenient and easy-to-install material is used to isolate saunas, baths and other facilities.

Right choice

The choice is based on the scope of the insulation. So, basalt wool is relevant for insulating roofs, walls, ceilings and facades, as fire protection for ventilation and building structures, pipelines, baths and saunas. Foam glass is an excellent non-combustible chimney insulation, it is appropriate to use it for insulation of roofs, walls, ceilings and fireproof structures.

If there is a desire to insulate an apartment with foam glass, then you need an L-shaped bracket, an anchor that will help fix a layer of blocks on a plastered wall (ceiling). Fiberglass is applicable for insulation of attics, roofs, walls, floors along logs, partitions and interfloor ceilings, saunas and baths, walls behind central heating systems.

A little about brands

The most famous manufacturers of non-combustible insulation are companies such as Rockwool, Ursa GEO, TechnoNIKOL, Light Butts.

Peat thermal insulation products are produced in the form of 1000x500x30 mm slabs, segments and shells to enhance the thermal resistance of brick, cinder-concrete and stone walls, for thermal insulation of pipelines, the temperature of which does not exceed 100 ° C, as well as for thermal insulation of refrigerators. Peat slabs are moisture-absorbing and combustible, the ignition temperature is 160°C, so they must be protected from direct exposure to moisture and fire. The bulk density of peat slabs averages 170 kg/m 3 and water-resistant slabs 220 kg/m3, bending strength is not less than 3 kg/cm 2 , thermal conductivity coefficient is 0.05 kcal/mhgrad.

The raw material for the manufacture of peat slabs is a young homogeneous peat with a pronounced fibrous structure, consisting of mosses and medium. The degree of decomposition of these mosses must not exceed 12% and must be at least 5%. Peat is mined in quarries mainly by excavators.

Peat heat-insulating boards are produced mainly by the wet method. To do this, lump peat is crushed into crumbs on the so-called dragging machine, which is a toothed roller (one of the rollers rotates at a speed of 60 rpm, the second - 300 rpm). Crushed peat in a dragging machine enters the cooking vats to obtain hydromass, consisting of 5-6% dry fiber and 94-95% water. This hydromass in vats is heated with live steam to 60-65 ° C and mixed or impregnated with some chemical reagents (sodium fluoride NaF, ammonium salt, phosphoric acid (NH4) 3PO4, sodium fluorosilicone Na2SiF6, etc.) to increase water and biostability, and also to reduce the flammability of products. The duration of hydromass cooking is on average 20-25 minutes.

Peat slabs of various sizes are made from peat hydromass on presses of various designs. Pressing of plates is made in the metal forms supplied with the corresponding devices for a drain of water. The final moisture content of molded boards is 85-88%.

Subsequently, the plates are dried in dryers of various systems. During drying, excess moisture is removed, colloids in peat become irreversible, and resins released from peat stick together its fibers, which increases the strength and water resistance of products. The maximum temperature of the heat carrier in the dryer should not exceed 150-160 ° C. The drying time is about 30 hours. Dry products with a moisture content of 12-15% are first kept in a warehouse, and then sorted and processed in a cold way (cut, glued, etc.) to give them the appropriate shape and size.

Reeds are called heat-insulating plates made from reeds, the stems of which are fastened with galvanized steel wire. The dimensions of running reed slabs are: length 2400, 2600 and 2800 mm, width 550, 950, 1150 and 1500 mm and thickness 30, 50, 70 and 100 mm. Bulk density of reed is in the range of 175-250 kg/m 3 . Humidity is on average 18% "and flexural strength is 5 kg / cm 2 (Yu-1 MPa). Depending on the location of the stems, reed slabs can be with a longitudinal and transverse arrangement.

The raw material for the production of reeds is the stems of an annual mature reed with a diameter of 7-15 mm. In addition, products such as reeds can be made from stems of lake reeds, rushes and similar plants that have flexible stems with longitudinal air channels in them.

Stems for obtaining reeds are harvested in the autumn-winter period of the year in such a way that they do not stop the winter in the bud. The slabs are made by mechanized presses, on which the supplied stems are first cut along the length with circular knives, placed in slabs, pressed and stitched in eight rows of piercing galvanized steel wire 1.6-2 mm in diameter. Pressed plates can be sent to the consumer for use in filling the frames of the outer walls of low-rise buildings, for the installation of internal partitions and insulation of floors. To reduce the air permeability of the outer reed walls, they are plastered.

In the climate in which we live, the issues of thermal insulation and insulation of premises will always be relevant. To do this, manufacturers are developing a wide variety of types of insulation that can be found in stores. They are made from various materials and have distinctive properties. Each of them has its pros and cons. One of the main indicators of an insulating material is its ability to ignite.

Heat-resistant insulation: varieties of material

Heat-resistant non-combustible heat-insulating materials have a wide range of applications. They are used in the installation of ceilings, walls, roofs, ventilation and pipelines. It is also not replaceable in the construction of baths and saunas. However, not all insulating materials can be equally applied to all objects. There are preferred application features.

Types of non-combustible heaters:

1. Basalt mineral wool. Fire-resistant fibrous soundproofing material, which is obtained by melting mixtures of metallurgy waste. It is not only incapable of burning, but also does not undergo any changes under the influence of high temperatures. Today, it is this material that is most actively used for insulation of ceilings, houses, facades, and other building elements. However, when choosing, you should pay special attention to the cost of cotton wool - cheap varieties have lower fire safety rates. This material is environmentally friendly and safe for health.
2. Foamed glass. A material that consists of tiny cells. It is made from cullet glass. The low flammability of the insulation allows it to be used on any operating units.
3. Glass wool. This material also does not burn and at the same time has a reasonable price. It is also made from cullet. However, it has disadvantages, which include danger to humans if the production technology is not followed. However, cotton wool has strength, heat resistance and hygroscopicity, much greater than its basalt counterpart.
4. Perlite. This material is widely used in construction. It has excellent "fluidity", perfectly fills the voids of the masonry. It is not subject to corrosion and decay, and cockroaches, ants, and other insects start up.

It should be noted that for each purpose of application, it is necessary to choose a certain non-combustible insulation. This also determines the form of release of this building material. In terms of shape and structure, it can be foil material, backfill, blocks, wadding, mats, rolls, mats, slabs, as well as liquid.

Refractory thermal insulation: material oxygen index

The oxygen index of the insulation is the degree of fire safety of the material, showing the minimum amount of oxygen per unit volume of the insulation.

The oxygen index has several flammability thresholds:

• 40% - high level, polymers of a composite sample;
• 31% - cellular and fibrous and non-combustible heaters;
• 20% - building materials that burn well in the air.

When choosing a heater for your needs, first of all, you need to pay attention to this indicator.

Expanded clay universal refractory insulation: application

Expanded clay, as a non-combustible heat insulator, has a huge advantage over other materials, and it can be used in any construction work, including the installation of fire hazardous objects. It has long been widely used in the construction of factory furnaces. And only it was used before modern mineral wool insulation appeared on the market.

Expanded clay application:

• They are used as an underlying base when constructing a blind area made of concrete;
• Lay as an insulating layer for floors on the first floors of multi-storey buildings;
• When arranging attic floors;

When erecting roofs on especially large construction sites, such as buildings of industrial workshops, supermarkets, social and cultural institutions, a layer of expanded clay is poured as a heater before arranging the screed and roof.

Rigid insulation for walls and ceilings

Each building material has its pros and cons. But then what, and even non-combustible, to choose for the walls?

One of the most important characteristics of thermal insulation material is the thermal conductivity index. The lower it is, the better. It is for this factor that it is worth choosing an insulating coating for walls in the first place. However, it must be remembered that only 20% of heat loss falls on the walls. In this regard, in order to achieve the desired effect, it will be necessary to insulate the rest of the house.

Experts say that it is most effective to insulate the house from the outside. To do this, it is important to know such a material's ability as vapor impermeability. It is also necessary to pay attention to how the material resists environmental influences. If you want to insulate the house from the inside, then you should pay attention to the environmental safety of the material, as well as the absence of toxic substances in its composition.

In private construction, non-combustible insulation is used during the installation of the following objects:

• flue;
• Ceiling;
• wooden houses;
• Cars;
• Sauna;
• Baths;
• Fireplaces;
• Kotlov.

In addition, this type of insulation is used in the construction of garages.

Non-combustible thermal insulation materials: the principle of choice

Considering that there are a large number of heat-resistant and insulating materials on the market, it is usually difficult for a person to figure out which material is better to purchase for certain installation work. To make the right choice, you need to decide on the type of work and find out which heat-resistant insulation is suitable for it.

The price will be important in making your choice. You should know that the quality of the material directly depends on the price and vice versa. The more requirements we meet the material, the more expensive it will cost.

Properties that a non-combustible material must comply with:

• Heat resistance
• Heat resistance (high temperature indicator);
• moisture resistance;
• fire resistance;
• Vapor barrier;
• Waterproofing.

All these qualities must be present in the right insulation, which will not require replacement in the near future and will give the desired effect.

Types of non-combustible heaters (video)

Non-combustible insulation makes it possible not only to protect the microclimate of the house from heat exchange with cold outdoor air. It also provides him with security as protection against fire and fire, the likelihood of which is minimized. Fire-resistant modern materials can be used in the construction of any buildings, whether industrial facilities or residential premises.

fibrous mineral, thermal insulator

. (Greek asbestos - inextinguishable) (mountain flax) generalized name for minerals of the silicate class (serpentine and amphibole groups), fire-resistant, alkali- and acid-resistant, non-heat-conducting, dielectrics

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Non-combustible fibrous mineral used in engineering

Refractory fiber product

Refractory material

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Superizol

Silicon-calcium plates SUPER ISOL (Super Izol) are designed for thermal insulation of fireplaces, being at the same time the design of its lining (2in1). The boards do not emit dust, are rigid, smooth and easy to assemble. The composition of the product allows it to be processed using traditional carpentry equipment. It is made from environmentally friendly natural material - calcium silicate.

Advantages:

• Refractory classification - class "A1" non-combustible;
• Maximum operating temperature - up to 1000°C
• Made from environmentally friendly natural material (calcium silicate);
• Extremely light weight (sheet 1220x1000x30mm - weight 8kg.);
• Very low thermal conductivity - for 400°C - 0.10W/(m*K);
• Has high resistance to carbon monoxide and hydrocarbons;
• Density - 225kg/m³
• Pressure resistance - 2.6 N/mm²
• The ideal choice for efficient insulation of stoves, fireplaces, boilers, electrical wiring and more;
• Ease and simplicity of installation, which does not require the use of additional materials (it is both a heat insulator and a sheathing structure);
• The thickness of the plate can be in the range - 30-100mm;

The material is easily processed with a knife and a carpentry tool.

For installation, heat-resistant mastic and sealant are used. The joints are reinforced with an additional layer of superisol and fastened with self-tapping screws.

Vermicuclite

Vermiculite (from Latin vermiculus - worm), a mineral from the group of hydromicas with a layered structure. After heat treatment in an oven at a temperature of 900 - 1000 degrees, it swells and turns into a durable and very heat-resistant material.

In the presence of a binder, vermiculite of various fractions is pressed under pressure into plates with a thickness of 20 mm or more.

Vermiculite boards, depending on their density, are used as a lining for fireplace and stove inserts, as well as fire protection for walls and air ducts.

Cut with a hacksaw, electric jigsaw and circular electric saw.

Mounting on self-tapping screws and gluing on mastic, as well as installation of self-supporting parts are possible.

Minerite

Minerite slabs consist of about 60% cement, 10% cellulose and 20-40% various mineral fillers. Plates do not contain asbestos and quartz. Processed with carpentry tools.

Basalt cardboard

It is made from refractory basalt fiber with the addition of an inorganic binder by filtration precipitation with simultaneous vacuum pre-pressing and subsequent heat treatment (drying). Basalt slabs and cardboard, having the best thermal insulation properties, have a significant limitation on the maximum temperature of use, therefore their average working temperature, in terms of the thickness of the product in the lining, does not exceed 500 ° C. These plates are an effective heat-insulating material. They are used as heat-insulating and thermal compensation material. Easily cut, cut into shapes, glued to inorganic adhesives. When installing, take into account possible linear shrinkage during heating. Use temperature from -260° to + 700°С, short-term - up to +900°С.

• Basalt cardboard is non-combustible and fireproof, flammability groups NG (non-combustible materials).
• Basalt cardboard is moisture resistant.
• Basalt cardboard is resistant to vibration.
• It has low thermal conductivity and low heat capacity.
• Basalt cardboard is chemically resistant to alkalis and acids.
• Resistant to thermal shocks (sudden changes in temperature of hot steam or water).
• Basalt cardboard is easy to install and easy to process, glued with inorganic adhesives. During installation, it must be borne in mind that when heated, it shrinks within small limits.
• It is plastic and flexible. Easy to mount even on curved structures, pipes, etc.
• Basalt cardboard does not rot, is resistant to rodents.
• It has been used in construction for over sixty years.
• The service life of basalt cardboard is more than 50 years.

ceramic fiber

Ceramic fiber, along with glass fiber, quartz fiber and basalt fiber, belongs to inorganic chemical fibers. The main type of ceramic fibers consists of a mixture silicon oxide and aluminum oxide:

Aluminium oxide-Al2O3 - in nature, it is common as alumina, a non-stoichiometric mixture of oxides of aluminum, potassium, sodium, magnesium, etc., colorless crystals insoluble in water.

• chemical properties - amphoteric oxide. Practically insoluble in acids. Dissolves in hot solutions and melts of alkalis, mp 2044°C.
• It is an n-type semiconductor.
• Dielectric constant 9.5 - 10.
• Electrical strength 10 kV/mm.

silicon oxide- silicon oxide (IV) (silicon dioxide, silica) SiO2) - colorless crystals, mp 1713-1728 ° C, have high hardness and strength.

• Silicon dioxide SiO2 is an acidic oxide that does not react with water.
• Chemically resistant to acids, but reacts with hydrofluoric acid and HF gas.

Multi-alumina insulation

In developing

Coaline wool

Mullite-silica wool (kaolin wool) is an effective heat-insulating material (from a number of refractory materials), which is used as a heat-insulating and thermal compensation material, as well as for the manufacture of plates, paper, various molded products, etc. Technical cotton wool has the form of a cloth twisted into a roll. Chromium oxides can be added to increase the application temperature. The fibers are resistant to temperature in oxidizing and neutral environments.

In a reducing environment, thermal insulation properties are reduced. The material is resistant to vibration and deformation, has good sound insulation.

Advantages:

• low thermal conductivity and low heat accumulation with low fibrous material weight
• resistance to non-ferrous metal melts
• the fiber is not wetted by liquid aluminum, zinc, magnesium and their alloys
• resistance to vibrations and deformations
• thermal shock resistance
• reducing the material consumption of the structure
• high electrical insulation performance, little changing with increasing temperature up to 700-800°C
• resistance to alkalis (except concentrated ones), as well as to most other chemicals
• inertness to water, oils.

Main technical characteristics:

• Unit rev. MKRR - 130
• Application temperature 0С - 1150
• Apparent density kg/m3 -130
• Thermal conductivity at 6000C W/m*K - 0.16
• Heat capacity at 10000C J - 1.047
• Loss on ignition % - 0.6

Chemical composition:

• AL2O3 - 51-55%
• SiO2 - 42-46%

Standard sizes:

• length 5000-10000 mm
• width 600 mm
• thickness 20 mm

LSU

Magnesium glass sheet, magnelite is made on the basis of wood (finely dispersed) shavings up to (15%), magnesium oxide (40%), magnesium chloride (35%), perlite (5%), fiberglass mesh (1%) and binder composite materials (4%) , by gelatinizing the magnesite mixture. The stable magnesium colloid is glued with a bonding fiberglass mesh and filled with a light filler. The material obtained as a result of a special technological process has high strength, hardness, and is quite light. And such properties of LSU-Premium as: water resistance, incombustibility, resistance to corrosion and plasticity are much superior to similar properties of such well-known materials as drywall, fiberboard, chipboard, plywood, etc.

Properties:

fire resistance

Fire-resistant properties of LSU are classified in the category of NG (non-combustible) and are confirmed by certificates GB/T19001-2000 - ISO9001:2000. Testing confirmed that the fire resistance level of glass-magnesium composite panels reaches the level of GB8624-1997A. High fire resistance prevents ignition and spread of fire during a fire. The material has been assigned class A (according to non-combustibility of materials). With a sheet thickness of 6 mm, it holds fire for up to 3 hours, withstands heating up to 1200 ° C

Waterproof

LSU has a high degree of water resistance, which prevents swelling and deformation of the material under prolonged exposure to water. Within one month, a sample of the material was immersed in water, after which test measurements were taken. The material is moisture resistant, resistant to moisture and mold fungi.

Strength

LSU is characterized by high strength, as a result of which the material is not subject to deformation under any external influence.

Plastic

LSU has high ductility (flexibility). Thanks to the reinforcing fiberglass mesh, Magnelite can bend with a radius of curvature of up to 3 meters, which allows it to be used on curved surfaces and reduces the likelihood of fracture during installation and transfer.

Sound and heat insulation

LSU (glass-magnesium sheet) has excellent sound and heat insulation. With rather low thermal conductivity (0.21 W / m ° C) and sound transmission (44 dB), magnelite, coupled with modern insulating materials, can be successfully used as a material for exterior facades, with the possibility of applying various decorative coatings. The sound absorption of a 95mm magnelite wall is similar to the existing standard - a 150mm brick wall or a 123mm wall of four layers of 12mm GVL.

Environmental friendliness

Durability

LSU service life (glass-magnesium sheet) - up to 50 years.

magnesite

Magnesite is a common mineral, magnesium carbonate MgCO 3 . It is used for the production of refractory bricks.

• Hardness - 4 - 4.5
• Density - 2.97 - 3.10 g / cm 3

Basfiber

The trademark under which basalt fiber is produced is a thin heat-insulating fabric made from basalt rocks. Basalt fibers have good temperature resistance, excellent heat and sound insulation properties, vibration resistance, and durability.

Properties:

• Application temperature — From -260°C to +560°C
• Short exposure — Up to +700°C
• Thermal conductivity - 0.031-0.038 W / (m. °K)

Application area:

• Laying between a beam (log) during the construction of wooden buildings, baths, saunas.
• Thermal insulation of floors during the passage of sandwich chimneys.
• Thermal insulation of walls, floors and ceilings by stuffing with basalt wool.

GVLv

Gypsum fiber sheet is moisture resistant.

Designed for use in residential, administrative, public and industrial buildings:

Rockwool

A series of insulating materials under the same name brand. The most commonly used material for fire protection FT Barrier.

Properties:

• Density - 110 kg / m 3
• Thermal conductivity -
  • λ 10 \u003d 0.036 W / (m K)
  • λ 25 \u003d 0.038 W / (m K)
  • λ 125 = 0.050 W/(m K)
  • λ 300 \u003d 0.090 W / (m K)
  • λ A \u003d 0.040 W / (m K)
  • λ B = 0.042 W / (m K)
• Combustibility group - NG
• Compressive strength at 10% deformation, not less than - 20 kPa
• Ultimate tensile strength of layers, not less than — 7.5 kPa
• Water absorption at full immersion, no more than - 1.5% by volume
• Water vapor permeability, not less — μ = 0.30 mg/(m h Pa)
• Acidity module, not less than — 2.0

Parok

Paroc stone wool is made from molten basalt rock heated to a melting point of around 1500°C. The binder makes up only a small percentage of its composition. Thanks to this, the fibers of the resulting wool can withstand very high temperatures, up to 1000 ° C. ISO 834 tests on the reaction of various materials when exposed to a fire flame according to the EN 1363 standard fire curve confirm this. Therefore, in accordance with NPB 244-97, Paroc stone wool is classified as non-combustible (NG).

The above properties of the Paroc material allow it to be used in building structures with high requirements for their fire resistance, and, moreover, as their fire protection. At the same time, the insulation completely lacks the so-called side effects: - smoke formation, release of toxic substances, etc.

Foam glass

Foam glass(foamed glass, cellular glass) - heat-insulating material, which is a foamed glass mass. For the manufacture of foam glass, the ability of silicate glasses to soften and (in the presence of a blowing agent) to foam at temperatures of about 1000 ° C is used. As the viscosity increases when the foamed glass mass is cooled to room temperature, the resulting foam acquires significant mechanical strength.

Foam glass produced in the form of blocks and granules. Density of foam glass - 120-200 kg/m. cube Sorption humidity of foam glass - 0.2-0.5%, at f=97% Thermal conductivity of foam glass - 0.04-0.08 W/(m K) (at +10°C) Vapor permeability of foam glass - 0-0.005 mg/ (m.h.Pa) Compressive strength limit - 0.7-4 MPa Bending strength limit - 0.4-0.6 MPa Foam glass deformation start temperature - 450°C Foam glass water absorption 0-5% by volume. Noise absorption: up to 56 dB Effective temperature range: from? 200 ° C to + 500 ° C.