How to insulate a chimney pipe with your own hands: why and what to wrap it with, which insulation is best for thermal insulation of metal

Stove heating with a pipe through which smoke from fuel combustion comes out is one of the most common in private homes. With the development of technology, new heating systems appear, but still, when boilers and furnaces using hydrocarbon fuels are used, combustion products are discharged through the chimney.

Chimneys can be either part of a heating stove or a separate structure connected to it or the boiler by pipes. Sometimes chimneys are even installed on a separate foundation next to the house. In cold climates, they all need to be insulated with non-combustible materials.

Why is it important to insulate the chimney?

Chimney insulation is necessary for the following reasons:

1. Fire prevention, because when a chimney passes through various types of coverings (walls, floors and ceilings), a fire may occur.
2. With sudden temperature changes, the material from which the chimney is made may begin to collapse. A similar thing can happen as a result of the formation of various acids and alkalis during the combustion process. They can destroy not only the pipe itself (this factor applies mainly to metal products), but also everything that surrounds it: walls, floors, ceilings.
3. The rapid heating provided by the chimney, against the backdrop of a rapid increase in temperature in the room, negatively affects things and furnishings in the room, including humans, so thermal insulation will help prevent this adverse effect and ensure normal regulation of heat exchange.
4. Reduce the release of condensation that appears due to temperature differences during the heating process. The released moisture forms harmful chemical compounds, reacting with many other substances contained inside the pipe.

Important! The main goal of providing high-quality thermal insulation to pipes is to minimize the risks of harm to human health, things and directly to the structural materials of the room.

Bulk

Bulk insulation materials 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 and have high thermal conductivity. This non-flammable thermal insulation is of a loose type and is therefore inconvenient to install. However, it is cheap and environmentally friendly. Expanded clay is characterized by the size of the fractions. So, up to 5 mm is sand, up to 40 mm is gravel. If large fractions are crushed, the result is crushed stone.

Thermal and fire-resistant qualities when using expanded clay are significantly increased. This is especially true for hard-to-reach places where such insulation 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

Perlite comes in the form of volcanic glass granules. The fraction ranges from 1 to 10 mm. Thanks 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 suitable for thermal insulation of roofs and walls and can be an alternative to brickwork. The disadvantage is that it absorbs moisture well and is fragile.

Positive factors of an insulated chimney

After building a house, carrying out work on roof insulation, and insulating it, it’s time to start waterproofing the channels. There are several positive aspects to such work, which we will look at later. So, insulating a chimney pipe allows you to:

• Reduce thermal energy consumption, it is noticeably reduced.
• Preserve and secure the passage through the roof itself.
• Ensure high wear resistance of the structure.
• Create a certain interior style without relying on a pipe.

In principle, this work should not cause any particular difficulties, but it is still worth understanding that in order to properly insulate, you need to choose the type of insulation that is suitable specifically for your home and performs the functions assigned to it.

Features of thermal protection products

When choosing non-flammable raw materials for construction work, you should pay attention to its characteristics, composition and features. Depending on these indicators, a means of insulating the floor, ceiling, pipes or other structures is selected.

The defining characteristic of the raw material for insulation is also its thickness. This indicator influences the choice of heat-insulating material for highways, air ducts and other structures that require precise calculations during their construction. Density and weight also influence the choice; the calculation of the load on the floors of structures depends on these indicators.

Materials for insulation of chimney pipes

It is advisable to start a project for insulating chimney pipes at the time of construction of a house or cottage, but thermal insulation work can be carried out at any stage, even if the dwelling has already been built. Next, we will consider the main methods, methods and materials that are suitable for carrying out this procedure.

The integrity of the chimney pipe is affected by two main factors that must be taken into account during insulation work:

1. Dew point. This point concerns the release of condensate, the negative impact of which was discussed above. The fact is that in the absence of proper thermal insulation, the dew point moves inside the pipe. That is, the warm air that rises during the heating of the room rises up from the direct heating source, reaches a certain point inside the chimney, and settles there in the form of condensate drops. This is especially dangerous for metal and brick products, since excess moisture is absorbed by the material and destroys it from the inside, freezing and turning into ice;
2. aggressive negative impact of gases released from combustion. During the heating process, harmful chemical compounds inevitably appear, which destroy the entire home heating system. This especially applies to weak acidic solutions of nitrogen or sulfur. With prolonged exposure, they can destroy a chimney made of almost all materials.

To protect yourself from such harmful factors, you can choose one of the following insulation materials:

• non-flammable insulation for chimneys made of slag wool;
• glass wool;
• basalt wool.

The most popular and widely used are thermal insulators made of basalt wool.

This version of fire-resistant insulation for chimney lining is available in two forms: in rolls and mats. It also varies in density and size, depending on the individual characteristics of the pipe, the purpose of the lining and other design factors, which are taken into account separately in each specific case.

Their main feature: preservation of structure and properties even with strong heating up to +400°C. They are fire-resistant and non-flammable, therefore reducing the risk of fire to a minimum.

Metallurgical slags are used as raw materials for production.

The disadvantages of this material include:

• presence of residual acidity;
• the possibility of a hostile environment occurring when moisture gets on the material.

Despite these negative aspects, this fire-resistant chimney insulation is widely used in repair and insulation work, as it maintains an ideal price-quality ratio.

Glass wool is an insulating material with a fibrous structure. It is produced from broken glass or raw materials used during glass melting.

Depending on the manufacturing method, glass wool is divided into:

• thin, which is obtained by spunbonding (pulling) from glass melt;
• rough through the blowing method.

Glass wool is sold in the form of rolls or slabs.

Basalt rocks are used as raw materials for the production of insulation.

• The method of using inorganic elements provides complete resistance to rotting and fungi.
• Basalt wool for chimneys has high strength and heat resistance, so it is preferred to be used as non-combustible thermal insulation to prevent fire inside the chimney.
• The insulator fits well and adapts to the insulation surface. Has a long service life. After installation, it serves without loss of its characteristics for 30-40 years.
• Based on strength, basalt wool is divided into: soft, semi-rigid and hard.

Basalt wool has an additional useful property in the form of protection against moisture, therefore it is a more universal method of thermal insulation in comparison with glass wool or slag fiber.

Why is thermal insulation needed?

One of the important reasons is to ensure fire safety. Flue gases can have temperatures up to 400 degrees. Overheating of the chimney often causes a fire. Therefore, it is especially carefully insulated in places of contact with house structures: ceilings, roofs, walls.

The second reason for insulating the chimney is to combat condensation. Water vapor, saturated with combustion products, cools and settles in the form of a tarry liquid on the internal walls of the chimney. The substance not only clogs the pipe and reduces its permeability, but also corrodes its walls. Another negative consequence is the unpleasant odor that enters the living space from the chimney.

The formation of condensation occurs especially intensively in winter, when there is a large difference between the temperatures outside and inside the chimney. This is one of the main reasons for the appearance of condensation. Therefore, thermal insulation of the chimney is an important step that will significantly extend its service life.

Chimney insulation design

The insulated chimney has a sandwich-like appearance. This design includes two pipes - external and internal, between which there is basalt insulation for chimney pipes.

Such a structure will help prevent the formation of condensation. In the manufacture of the inner pipe, which bears heavy loads from the interaction of combustion products, high-quality steel is used.

The outer pipe is decorative. For its manufacture, copper, stainless steel or any other material coated with colored enamel is used.

But with an industrial chimney everything is a little different. As a thermal insulation material, you need to use insulation that can withstand temperatures up to 4,000 degrees.

Such material should also provide protection for the outer skin, since the constant influence of temperatures and temperature changes can negatively affect the outer (cement) layer.

Types of gas flues

Depending on the material used, gas chimneys are divided into several types, while brickwork is practically not used for gas removal.

However, brick is often used for piping the exhaust pipeline. This is not a simple facing brick - it has a square shape, and its inner part has a round cross-section.

Stainless steel chimney pipes

Metal chimneys are the most popular. The most commonly used material is stainless steel, which is characterized by high corrosion resistance.

Stainless steel chimney pipes are easy to install and highly corrosion resistant to any aggressive environment

The main advantages of stainless steel structures:

• Resistance to condensed moisture;
• Resistance to precipitation;
• Chemical resistance to soot resulting from gas combustion;
• Resistant to high temperatures;
• The internal smooth surface reduces the coefficient of friction, ensuring the unhindered passage of gases with minimal soot deposition;
• Light weight allows the use of standard fasteners;
• Simple installation eliminates the difficulty of carrying out work with significant destruction of walls;
• Quite affordable price.

It is not recommended to use conventional stainless steel pipes. This is due to the fact that chimney pipes are made from special grades of stainless steel, which, due to the introduction of alloying elements, are highly resistant to acids resulting from the formation of condensation.

Brick chimney installation

Currently, a brick chimney is used much less frequently, because... built mainly for brick kilns, and they are actively being replaced by gas models. In addition, it takes a lot of time to set it up.

Along with this, a brick chimney has the following disadvantages:

• Rough internal surface, promoting the accumulation of soot and reducing traction;
• Instability to corrosion by acid. Due to the hygroscopicity of the material, condensation is absorbed and quickly destroyed;
• Difficulty of construction. Masonry from piece building materials takes much more time than assembling metal or ceramic modules.

The negative qualities of a brick chimney can be eliminated by inserting a sleeve in the form of an asbestos or stainless steel pipe.

Chimney made of asbestos cement pipes

Previously, asbestos-cement pipes were very widely used in the construction of chimneys for gas boilers. Despite the porosity of the material, the roughness of the internal walls and the far from ideal cross-section, the popularity of asbestos-cement pipes is due to their low cost.

A chimney made of asbestos-cement pipes has a low price, but for reliable operation it requires a strictly vertical location

To avoid these disadvantages, a chimney made of asbestos-cement pipes should be as straight as possible with sealed joints. Simple cement mortar is not enough here; dried joints must be treated with sealant or special sealed clamps must be used.

In general, the work is not difficult. If the joints are properly sealed, a chimney made from asbestos-cement pipes will be in no way inferior to its stainless steel counterpart. However, during active use it will serve no more than 3-5 years, after which it requires mandatory replacement.

Smoke channel made of ceramic pipes

Chimneys made from ceramic pipes are reliable, durable, and highly corrosion resistant to aggressive substances and temperature changes.

When constructing a high chimney from a ceramic pipe, the construction of a reliable foundation is required, since they are erected according to the “root chimney” scheme

However, along with this, they have their drawbacks - heavy weight, the mandatory construction of a separate foundation and high cost. But all these disadvantages of ceramic chimneys are offset by decades of reliable and stable operation.

Fireproof thermal insulation: oxygen index of the material

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

The oxygen index has several flammability thresholds:

• 40% – high level, composite polymers;
• 31% – cellular and fibrous and non-combustible insulation;
• 20% – building materials that burn well in air.

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

Advantages and disadvantages

In addition to significantly reducing the fire danger of construction sites, the use of heat-resistant insulation has the following advantages:

• Increasing the service life of floors and partitions of the house.
• Increasing the service life and safety of using communications and engineering networks.
• Reducing the risk of fire associated with the operation of furnace equipment.
• Significant reduction in the amount of condensate.

The only disadvantage can be considered the high cost of some brands of fire-resistant insulation materials.

How to make non-flammable thermal insulation of chimneys

When fuel burns in stoves and fireplaces, carbon monoxide is formed. They are removed through the chimney. Despite its apparent simplicity, this design is complex. Chimneys are installed to provide the necessary draft, so they should be correctly brought to the roof, the height determined and connected to the roofing. Properly made thermal insulation for chimneys is also important.

Furnace gases escaping from the furnace to the outside have a high temperature. When they rush up the chimney channel, condensation forms on its inner walls. This leads to the following problems:

• if moisture is absorbed into the chimney material, it will deteriorate over time;
• sometimes droplets of water settle on the surface of the outlet channels, which reduces their permeability and allows smoke to leak into the room;
• when condensate constantly flows down the walls of the chimney, smudges, hanging drops and an unpleasant odor appear.

Thermal insulation of the chimney helps to avoid these troubles and extends its service life.

Note! The chimney is insulated to prevent rapid cooling. If you do it incorrectly, you can’t count on a positive result.

How to isolate the furnace channel depends on the material from which it was made. You can make insulation using:

• crushed bricks;
• slag;
• expanded clay;
• basalt or mineral wool;
• kaolin, etc.

After installing the containment shell, the smoke exhaust structure is lined. For this purpose it is used:

• brick;
• slag concrete and reinforced concrete slabs;
• galvanized metal casings;
• wooden boards;
• profiled sheet, etc.

On a note! The easiest way is to buy a ready-made insulated sandwich pipe and install it at the stage when the chimney is being built.

Let's take a look at some thermal insulation options separately.

Basalt wool insulation

This method of protecting chimneys is attractive due to its accessibility and is therefore used more often than others. Basalt wool has a thickness of 20-100 mm and can withstand temperatures up to 750 degrees. This fire-resistant material is wrapped in several layers around the pipe and secured with wire. A layer of plaster is applied on top.

Lining the chimney with stainless steel sheets is done in the following order:

• measure the perimeter of the pipe, including insulation;
• cut a piece of sheet steel up to one meter long and a width equal to the perimeter of the structure plus an allowance for fastening;
• round the sheet and finish the edges with a roller;
• put the resulting form on the stove chimney, pull it together and fasten it with metal screws;
• In the same way, install several more metal casings on top of each other (make sure that the seams run at an angle of 120˚).

On a note! If you do not use steel casings, the insulation will not last long and you will have to replace it. Even if you insulate the chimney with foil or film, they will not be able to prevent moisture from penetrating into the basalt wool.

Applications of kaolin

Another method of thermal protection of chimneys is the use of kaolin. The material is characterized as:

Work on installing non-flammable thermal insulation for chimneys is carried out in the following order:

1. first plaster the stove channel;
2. then glue kaolin sheets to the wet plaster;
3. Finally, sew up the chimney with facing material.

Insulation with mineral wool

Thermal insulation using mineral wool is done as follows.

• Build a metal profile sheathing around the chimney. The profile size is selected depending on the thickness of the insulation, and the lathing pitch depends on the width of the insulating sheets.
• Attach mineral wool to the profile in several layers (do not forget to space the seams).
• Wrap the finished structure with vapor barrier film and seal the joints with tape.

Note! Sheets of metal corrugated sheets can be used as finishing. They are fixed to the sheathing using special screws with rubber gaskets.

How to insulate a chimney also depends on the material from which it was made.

Thermal insulation of steel pipes

The chimney, made of a round steel pipe, is insulated using a ready-made metal case. Large diameter galvanized pipe is suitable for this purpose. The difference in the diameters of the chimney and insulation is 16-20 cm. Thermal insulation is installed in this way.

1. Place the casing on the steel chimney.
2. Pour expanded clay, broken brick or slag into the space formed between the elements. You can also compact mineral wool, basalt wool or fiberglass between the pipes.
3. Fill the open area with cement mortar, waterproof it and install a protective casing on top.

On a note! The profile steel pipe is sheathed using wooden panels or metal sheets (corrugated sheeting). The distance between the components of the structure is 8-10 cm. The space is filled with insulation and securely sealed on top.

Insulation of brick chimney

In this case, preference is given to mineral wool, which is attached as follows:

• cut out pieces of insulation the size of which corresponds to the area of ​​the side walls of the pipe;
• attach the blanks to the brick using plastic dowels with round heads, or use tape (this option is lightweight, but not reliable);
• cover the attached material with asbestos-cement slabs, corrugated sheets or bricks.

Important! To reduce heat loss, plaster the brick on the outside of the channel, and then cover it with a frost-resistant compound.

Thermal protection of asbestos-cement pipes

Insulating chimney pipes from asbestos cement is done like this.

1. First, clean the outer surface of the chimney from dust and dirt.
2. Make a folding metal casing consisting of two halves. When assembled, its diameter should be 12-16 cm larger than the diameter of the pipe. The height of the case can vary within one meter.
3. Place the bottom galvanized casing on the chimney.
4. Fill or compact protective material into the resulting space.
5. Install the next case and reinstall the insulation.
6. Cut the top casing together with the asbestos cement pipe at a slight angle.
7. Cover the insulation with a thin layer of cement mortar.

On a note! If you do not install a metal case, the mineral wool will become wet, heavy, crumpled or frayed in the wind. Birds, rodents or cats also take away the insulation.

Insulation of the chimney in the ceiling

When a metal chimney passes through a wooden ceiling, the distance between them must be at least 30 cm. If the chimney is lined with brick, then this value is reduced to 10 cm. The opening is filled with basalt wool and closed from below and above with a metal sheet. Make sure that the chimney is securely fastened to the ceiling.

Thermal insulation for chimneys: types of insulation and methods of protecting chimneys, Portal about pipes How to insulate a chimney - non-flammable thermal insulation. What materials are used to insulate chimney pipes in the ceiling? Methods and nuances of insulating structures made of

Which material to choose?

In order to insulate a steel flue pipe, you need to take into account that its heating temperature can reach three hundred degrees or more. To do this, you need to use a material that is completely devoid of flammability. For this purpose, as a rule, mineral wool, slag concrete slabs or other analogues are used. In addition, the insulation process can be carried out through the use of plaster mortar.

It is important that the weight of the insulating material is comparable to the supporting capacity of the roof. Because elements that are too heavy can damage it.

Most experts prefer mineral wool. It is lightweight and therefore ideal for this task.

You can also purchase special cylindrical insulation. They create a sufficient level of protection for the chimney. Because their design has a protective layer of foil. The sizes of the products in question vary. Therefore, you can easily choose an option for a pipe of the required diameter.

Safety when insulating a chimney at height

Before insulating a metal or any other pipe, you need to inspect the workplace to assess possible risks in order to minimize them. A ladder prepared in advance and tested for strength, boards for flooring over slate or tiles, strong, proven ropes - all this will ensure your safety during the work.

When laying boards on slate, observe the following rule: boards are laid across the waves. If you don’t have an industrial safety harness, make one from strong, thick rope or belt.

One end of such insurance must be firmly attached to a strong, fixed structure of the house or roof.

Clothing should not be unbuttoned, have drooping sleeves or a dangling collar, but it is best to use overalls.

When laying a chimney pipe through the thickness of the ceiling, do not skimp on insulation - lay it in this place, even if the ceiling material is non-flammable: heated concrete can ignite the decorative finishing of the ceiling.

You don’t have to lay basalt or mineral wool next to the stove or heating boiler, but such areas should be no more than 50 cm wide.

If the insulation material is able to withstand high temperatures (read the instructions for it), then it is better to lay it in these places.

General recommendations for insulation

The use of fire-resistant insulation for a chimney must be carried out according to certain rules. The following must be taken into account:

• For a wooden covering, the insulation layer must be at least 50 mm and no more than 100.
• When laying material in several layers, the joints must certainly be covered with the upper layers so that there is an overlap.
• If the heat insulator is made in the form of a cylinder, each subsequent layer must be laid with an offset of 180 degrees.
• For boilers that use liquid fuel and for gas heating, it is necessary to use heat-resistant material that can withstand temperatures up to 300 degrees.
• The use of a protective screen is considered a mandatory isolation measure. This is true if materials that do not have a foil layer were used during the work.

Non-combustible thermal insulation: insulation of brick, asbestos-cement pipes, stainless steel chimneys

The need to insulate high-temperature routes has arisen since their inception. And if the insulation of pipelines was solved quite simply - they were buried in the ground, then the insulation of chimney pipes caused a number of difficulties. And they were associated primarily with the danger of fire of the heat insulator itself. This is why non-flammable thermal insulation for chimneys is a priority when choosing insulation.

For information! In some sources you can read that such a layer is possible without reinforcement, but I would still like to remind you that reinforcement is an element of strengthening, and the layer that you leave will serve as a shield for the pipe, while independently taking on themselves against all temperature fluctuations and aggressive atmospheric influences. Therefore, the stronger the structure, the longer and without problems it will serve.

Next comes the application of the plaster itself, which must be prepared in two consistencies: pasty and more liquid. Layers are applied one after another, the last being a thick layer, which is leveled and whitened with regular whitewash.

Also suitable for a brick wall are basalt wool mats, foam glass and any other non-flammable thermal insulation material, and the technology will be as follows:

• The pipe is wrapped in insulation: either mats of basalt wool (foam glass) are attached to umbrellas, or a roll is wrapped around the pipe and fixed with wire;
• Next, either prepare another brick box around the pipe, followed by sealing the gap between the main pipe and the casing with cement mortar;
• Either the insulation is wrapped in foil, the lower joining part is cemented to form a cement pad, the joints and seam part are closed with special foil tape.

Insulation of brick pipes is as follows:

• At the end of all work, we need to get a layer of 5 cm, this will be quite enough for pipes, so we clean the pipe itself from dirt and unstable layers and reinforce it with a coarse metal mesh;
• All the technologies we have described are quite simple, one might say economical, and easy to do with your own hands.

Pipes made of so-called stainless steel

The same materials are used for steel chimneys as for asbestos-cement pipes. Laying technology, materials, fastenings, all this is reminiscent of the previous chapter. Only in this case there are ready-made solutions that you can choose and not suffer. These are the so-called sandwich systems, when the pipe is already in the pipe, and non-combustible insulation is inserted between them.

General recommendations for carrying out work

Warming is a necessary process.

Whatever technologies you choose for insulation, there are general recommendations that, for some reason, are lost in the general cacophony of advice, but which are still worth listening to in order to avoid many embarrassments. So:

• As you have noticed, in all works it is proposed to seal the bottom edge in a cement base, before carrying out such work, make sure that the roof base allows it to be done;
• When carrying out insulation, keep in mind that neither the insulation nor the casing (if any) should come into contact with the roof. That is, it is necessary to think through the docking and drainage system;
• When purchasing adhesive mixtures for fixing the same basalt wool or foam glass, as well as adhesive tape for fixing insulation, pay attention first to the area of ​​application, and then to the price, and not vice versa. The fact is that heat-resistant materials will initially be more expensive than conventional ones;
• When choosing a thermal insulation material, consult the seller about the possibility of using the material. Although the material is imported specifically for your region, sometimes thinner insulation is left behind. Just keep in mind that for insulation work, a material of at least 40 mm is required;
• More complete information may be in the accompanying documents for the material, as well as on the packaging, the official website of the manufacturer, do not be lazy to look at the information.

Insulation of the chimney using wooden panels

This method is also considered simple, and a person with only basic skills in the construction industry can implement it with his own hands. The work order is presented below.

• First, build a wooden frame around the pipe from the stove or other heat-generating unit. To do this, use a 40x40 mm beam;
• then cover it with colored paint intended for finishing the facades of houses. If funds do not allow, you can use flat slate;
• Having completed the plating, fill the resulting void with either slag, sand, or pieces of glass wool. All these materials can be mixed. When filling the voids, compact this entire mass;
• After filling the voids, proceed to create a decorative frame frame. The choice of material is limited only by your imagination and ease of installation. For example, fastening colored corrugated sheets to structural panels is done using roofing screws, and is not associated with any difficulties.

Good to know! The cost of colored paint is lower than that of siding. And modern industry produces these products in the widest range of colors.

Chimneys insulated in this way retain heat for quite a long period of time, and even their active use will not cause you problems.

Between the wooden frame and the pipe you need to lay a layer of any fire-resistant insulation

Brands of basalt insulation for chimney insulation

Various manufacturers offer consumers more than several dozen types of basalt insulation materials. Some are manufactured abroad, others at domestic enterprises.

Judging by customer reviews, the products of the following companies are popular:

• Rockwool basalt wool is manufactured at the enterprises of the company of the same name, located in Denmark. In terms of its characteristics: hydrophobicity, sound and heat insulation, as well as mechanical strength, Rockwool is significantly ahead of analogues from other manufacturers. Rockwool basalt wool is used by manufacturing companies to insulate finished ceramic chimneys from Schiedel, Effe2 and others.
• URSA basalt wool – originally manufactured in Italy. Today the company has 14 large production centers located in Europe, the Middle East and Asia, which as a result could not but affect the quality of the products. The URSA company specializes in insulation of industrial and domestic premises, and is popular due to the good price-quality ratio of its products.
• Izovat basalt wool is an insulation material manufactured in neighboring countries, in Ukraine. The product range includes mineral boards with densities from 30 to 200 kg/m³. It is worth paying attention to the brand intended for insulating brick chimney ducts with subsequent plastering of the surface. The thickness of Izovat slabs is from 30 to 200 mm.
• Basalt wool Paroc is a Swedish company that has been specializing in the production of stone wool since the 30s of the last century. Paroc production facilities are located exclusively in EU countries, which allows us to maintain a high level of quality and full compliance with safety standards in force in Europe.
• Paroc basalt cylinders can be used to insulate iron chimney pipes. For this purpose, the company has developed the Paroc Pro Section and Paroc Pro Bend + covering layer series, which provide maximum thermal insulation and protection of steel structures.

When choosing basalt for pipe insulation, you should mainly focus on the thermal characteristics specified by the manufacturer. On the basis of large concerns, modifications specifically designed for smoke exhaust systems have been developed.

Manufacturers and materials

Since the production of mineral wool uses substances that can be harmful to human health (although this has not been proven, it is theoretically possible), it is advisable to buy it from trusted manufacturers. Very stringent requirements for mineral wool manufacturers have been adopted in Europe. Probably for this reason, mineral wool “Knauf”, “Rockwool”, ISOVER, URSA, etc. is popular. But the most stringent requirements are adopted in Germany, because German materials are considered the safest.

TechnoNIKOL

A large corporation that currently has 36 factories in different countries. Specializes in the production of roofing and thermal insulation materials. The range of mineral wool is very large. For private housing construction, three lines are used:

• ROCKLIGHT
• TECHNOBLOCK
• TECHNOACUSTIC

The scope of application of these materials is shown in the table.

Scope of application of TechnoNIKOL mineral wool

Basalt wool with fire retardant properties has four positions:

• TECHNO OZB PLATE. There are two grades with different densities 100 and 80. Designed to increase the fire resistance of reinforced concrete structures. Can be covered with fiberglass or foil.
• TECHNONICOL stitching mat - temperature of use up to +750°C. It does not contain phenolic binders, as it is held together using galvanized or steel mesh and stitched with wire. On one side it may have a lining of aluminum foil.
• TECHNO OZD boards are designed for thermal insulation of fire doors.
• TECHNO OZM plates are intended for thermal insulation of metals (profiled sheets).
  TechnoNIKOL stone wool can be in mats and rolls

The most acceptable option for thermal insulation of a steam room is TechnoNIKOL stitched mats - they do not contain phenols. In the production of the rest, a low-phenolic binder was used (information from the manufacturer’s website).

Knauff

This well-known German manufacturer has a different approach to forming its assortment: materials are grouped according to areas of application. There are several universal products that can be used on walls, roofs, to insulate floors, ceilings and partitions. These are HeatKNAUF Premium, KNAUF Insulation Thermo Plate 037, HeatKNAUF Home and Home+, HeatKNAUF Cottage and Cottage+. There are several narrow-profile materials:

• for roofing it is recommended to use KNAUF Insulation Pitched roof;
• for ventilated facades and layered masonry (brick wall with thermal insulation gap) KNAUF Insulation Facade;
• for floor insulation there is a whole set of roll materials: TeploKNAUF Dacha, TeploKNAUF Dom and TeploKNAUF Dom+, Insulation Thermo Roll 040 and 044;
• for sound insulation AcoustiKNAUF, AcoustiKNAUF Expert, Insulation Acoustic Partition;
• for wooden and frame houses there is a group of materials Insulation Frame Structures
  Knauff offers a wide range of high-quality mineral basalt wool

Rockwool

This manufacturer is no less famous than Knauf. The assortment is extensive, the quality is good. The approach to forming an assortment is the same: there are universal and special materials. Universal ones are: LIGHT BUTTS, LIGHT BUTTS SCANDIC. There are a large number of specialized ones:

• for saunas there is material SAUNA BUTTS. Operating temperatures up to +200°C, on one side there is a foil coating;
• Rockwool Kaviti Butts is recommended as a layer for double brickwork with a thermal insulation gap;
• for insulation of facades FACADE BATTS D, PLASTER BATTS, FACADE LAMELLA, FACADE VENTI BUTTS and FACADE VENTI BATTS D;
• for the installation of floors on the ground and floating floors FLOR BUTTS AND, FLOR BATTS;
• fire protection of metal surfaces (in pipe passages through the roof and thermal insulation of the chimney if necessary) WIRED MAT 80;
  temperature range - from -180 to +750°C. The range of Rockwool mineral basalt wool is extensive

ISOVER (Izover)

This brand belongs to the Saint-Gobain group and has a considerable number of factories, one of which is located in Russia (Egoryevsk). Therefore, the prices for the products are reasonable. This company produces mineral wool based on fiberglass. The assortment is considerable. It’s easier to present everything graphically (look at the photo).

Izover mineral wool and its scope

It is worth mentioning separately about the material for saunas: unlike other materials presented above, it has a fire safety class of G1 (low-flammability). One of the sides is covered with foil.

Features of chimney insulation with basalt wool

In addition to the correct choice of basalt insulation, you need to worry about compliance with installation rules. As practice shows, the following norms are especially often violated:

• The thickness of the basalt wool layer in penetrations through wooden structures is at least 5 cm. The distance from load-bearing beams is at least 1 m.
• If you need to lay the material in several layers, correctly lay out the fire-resistant basalt slab with an offset to overlap the joints of the bottom sheet with the top sheet. The same rule applies when installing cylindrical insulation. The longitudinal seam of each subsequent shell is shifted by 180°.
• The installation of a chimney passage through a wooden ceiling using basalt wool involves the use of fire-resistant cutting. There should be a distance of 50-100 mm from the heating surface to the flammable material. The gap is filled with stone wool.

• The thickness of the basalt fiber in the chimney should be no more than 40 mm, for external insulation, up to 100 mm. Density is selected depending on operating conditions. To insulate ceramic chimney pipes connected to solid fuel boilers, basalt wool with a density of 100 to 200 kg/m³ is used.

• There is no point in using high-temperature basalt wool for thermal insulation of a chimney connected to a gas or liquid fuel boiler, since the temperature of the exhaust gases rarely exceeds 200-300°C. It would be optimal to install cylindrical insulation.
• Calculation of the required amount of basalt wool for insulation of a steel chimney. The required thickness of the material is selected. The insulation packaging indicates the approximate consumption of cotton wool for different layer thicknesses. All that remains is to calculate the size of the circle in centimeters and the length of the pipe. After this, the number of packages is calculated.
• After insulating a single-layer pipe with non-foil material, it is necessary to manufacture a protective structure.

In some construction stores, packages with basalt insulation can be cut in half, or the mats can be sold individually. This allows you to purchase the exact amount of material and avoid overpayments.

Pros and cons of using basalt for chimney insulation

The main disadvantage of basalt insulation is its cost. Otherwise, compared to any other types of thermal insulation, basalt undoubtedly wins. The advantages of the material include:

• Low thermal conductivity - even at flue gas temperatures above 500°C, basalt wool heats up to no more than 30°C. During a short-term ignition of soot and a temperature jump to 900°C, the outer contour of the sandwich pipe will not heat up more than 45°C.
• Non-flammability - the material can withstand the impact of directed fire from a gas burner without igniting. Cotton wool begins to melt after exceeding 1100°C. Therefore, you can lay basalt insulation close to the chimney pipe and not worry about the safety of the room during the entire period of operation.
• Simple installation - mats and sheets can be easily cut with a regular paint knife. The material is fixed using clamps or binding wire. If you lay basalt wool yourself when installing chimneys, you can significantly save on the work.
• The specific gravity of even basalt fire-resistant wool is 30 kg/m³; accordingly, after insulation, the weight of the chimney structure increases very slightly.

Basalt wool has no analogues in its characteristics and is the optimal solution when choosing insulation for a chimney. The only thing that limits the popularity of the material is the high cost associated with the peculiarities of the production process.

Do-it-yourself insulation installation

Before starting work, you need to learn the basic rules for applying insulation, and learn how to insulate an iron chimney pipe yourself. Insulation carried out according to the rules will allow the owner not to violate the construction technology and not worry about reducing the draft in the chimney.

Required tools and materials

For installation work on insulating a chimney pipe from the outside, you will need a set of tools that are available in every household: a tape measure, a screwdriver, a grinder, self-tapping screws, metal scissors, a knife for cutting insulation, and protective equipment.

Calculation of the dimensions of the structure

To properly organize the work, you need to calculate the construction parameters and costs. The heating temperature of the inside of the outlet channel, as well as the insulating layer, depend on what type of fuel is used.

The amount of insulation is calculated according to the measurements taken:

• external parameters of the insulated surface;
• height of the structure;
• distance from the lower outlet of the pipe.

For example: on a cold roof and above it, the outlet from a solid fuel heater is wrapped with a layer of 5 cm to 10 cm. The distance on the chimney from the ceiling to the roof in an insulated attic is insulated with a layer of up to 6 cm. The exhaust structure from a gas boiler is insulated with a layer of 3 cm.

The insulation consumption for a chimney for a solid fuel boiler will be, for example, as follows: with its height of 5 m, diameter 219 cm, basalt cylinders need 5 linear meters with a layer thickness of 5 cm, parameters for the internal diameter. Sheet insulation will require 3.5 m². For the protective casing, buy galvanized steel, 2.7 cm thick.

The height of the protruding end depends on the distance of the channel to the roof ridge. Located at a distance of 1.5 m from the center of the house, the chimney should be 50 cm higher than the ridge. Two meters from the center - the height at the level of the ridge, three meters on pitched roofs - the height is determined at an angle of 10°, between the line of the horizon and the ridge.

Work progress

Before installation, you will need to buy chimney sections, anti-corrosion agent, insulation, brackets and clamps, heat-resistant sealant, moisture-proof fabric, galvanized cladding, profiles for the frame, asbestos sealant, fire-resistant foam.

1. Before using the insulation, an anti-corrosion substance is applied to the pipe. A protective film is formed on the surface, which protects the metal from destruction for a long time. Combine and secure the parts of the pipe so that moisture does not enter the joints when draining. The connection should be 5-7 cm long for stability.
2. After connecting the segments, the metal pipe is wrapped with insulation. The edges of the insulation are wrapped overlapping and secured with steel clamps or aluminum wire. Externally insulated wire cannot be used. Under the influence of high temperatures, the insulation will melt, the fastening strength will weaken, which will lead to deformation of the winding.
3. The soft surface is covered with a vapor barrier fabric, and sheets of galvanized steel are fixed on top of it. The galvanizing is fixed with an overlap, from bottom to top, with an overlap of 7-10 cm, fixed with clamps every 30 cm.
4. A hole is cut in the roof, which corresponds in diameter to the insulated chimney.
5. Under the roof and on the outside of the ceiling to the rafter structure, a horizontal fastening is installed to stabilize the chimney.
6. The gaps between the roof and the structure are sealed with heat-resistant non-combustible materials, blown in with heat-resistant foam, and covered with a metal casing.

The use of foil insulation

Foil-coated basalt wool has a wide range of applications due to its good performance characteristics. This heat insulator can be used for:

1. Rooms with high humidity levels, for example baths and saunas. Hot air does not come out for a long time, and cold air does not penetrate inside.
2. Warm pools. Thermal insulation with basalt foil wool will allow the structure to be used even in severe frosts.
3. Fireplaces in dachas and country cottages. In this case, using basalt wool with foil can not only preserve heat, but also ensure safety, since the foil coating is protected from fire.
4. Pipelines on private property. Helps protect the system from frost and unwanted moisture, which can lead to pipe damage.
5. Foundations of buildings. When insulating the base of a house, basalt wool plays a dual role: a heat insulator and a moisture-repellent membrane.
6. Sea and river vessels. Used to maintain a comfortable microclimate in holds and cabins.
7. Walls, roofs and floors of private houses. Residential properties will be reliably protected from cold, noise, and moisture, while the cost of such thermal insulation is quite acceptable.

It will be possible to achieve a good thermal insulation effect only if you strictly follow the insulation algorithm recommended by material manufacturers and specialists.

Conclusions and useful video on the topic

Methods for installing a heating cable:

One of the options for fastening the PU shell:

https://youtube.com/watch?v=MvrCTEVVlu0%2520

How to insulate pipe joints with Energoflex:

Insulation with rubber sheet material:

https://youtube.com/watch?v=3q0S-zGKwXo%2520

As you can see, the materials and methods of insulating gas pipes in a private house can be different. Their choice depends on specific conditions: location and size of the gas pipeline, technical characteristics, cost. All the materials listed in the article are universal, that is, they can be used for thermal insulation of any pipe communications.

Despite the ease of installation of insulation, we recommend that you first consult with a gas service specialist in order to exclude both an erroneous choice of material and penalties on the part of the service organization.

Have you recently been insulating a pipe and want to tell other users about your experience? Write your recommendations, add photos of the finished work, participate in discussions - the comment form is located below.

If you still have questions on the topic of the above material, ask them to our experts in the feedback block.

Expert advice

Builders advise choosing thermal protection according to the following criteria:

• fibrous base, light weight;
• ready-made stainless steel sleeves;
• resistant base to high and temperature changes, covered with foil;
• the internal diameter must be larger than the outlet of the heating device.

Install a smoke exhaust channel according to the rules. It is also worth taking advice from experts. Thermal insulation is carried out according to the following standards:

• thermal insulation must be applied in a continuous layer, without transitions, especially in places of contact with the ceiling and roof;
• mats and strips are laid only with the markings facing outwards;
• installation of parts is carried out from the bottom up, overlapping, the lower end is covered with the upper connection;
• internal insulation is carried out in stages, during installation of the structure, external insulation after complete assembly;
• a spark arrester is installed at the end if the roof consists of flammable materials;
• use personal protective equipment.

The rules are simple; following them will help prolong the operation of the output channel.

Rules for installing chimney systems

Before moving on to a review of insulation materials and the rules for working with them, you need to understand the requirements that must be met when installing a chimney. This point is very important, since violation of the standards can lead to the inability to operate the equipment.

Compliance with the standards and requirements for the installation of gas chimneys ensures their reliable and safe operation

Chimney ducts must comply with the requirements of DBN V.2.5-20-2001 and SNiP 2.04.05-91. The basic requirements are as follows:

• The internal diameter of the chimney pipe must be larger than the diameter of the outlet pipe of the gas boiler;
• The main pipe cannot have curved or tapering sections, must be located vertically, a slope of no more than 30 degrees is allowed;
• The diversion main can have no more than three turns;
• The distance from the outer surface of the pipe to walls made of combustible materials is 25 cm, to walls made of non-combustible materials – 5 cm;
• The insulation of the connections of the chimney elements must ensure complete tightness of the joint;
• No connections are allowed within the roof passage (this part of the chimney pipe must be solid);
• In places of turns, inspection hatches must be installed;
• The lower part of the chimney pipe must be equipped with a structure for collecting condensate;
• The upper part should rise above the roof ridge by no less than 50 cm, and the length of the chimney itself should provide high-quality draft.

Compliance with the standards and requirements for the installation of gas chimneys not only improves the operating efficiency of the equipment, extends the service life of the chimney, but also guarantees fire safety and eliminates the threat of smoke in the room.

The main mistakes when insulating a chimney

When thermally insulating a chimney with your own hands, the following mistakes are often made:

• the use of low-quality or unsuitable material according to technical characteristics, which during operation can shrink and expose part of the structure;
• lack of a protective casing for insulating material in the chimney head area;
• The thickness of the thermal insulation layer is too small (less than 4 cm).

Sources

• https://teplota.guru/teploizolyatsiya/bazaltovaya-vata.html
• https://banya10.ru/samodelki/ogneupornyj-material-dlya-dymohoda.html
• https://vl-fasad.ru/krovlya/negoryuchie-materialy-dlya-dymohoda.html
• https://mailtrain.ru/uteplenie/negoryuchij-uteplitel-dlya-dymohoda.html
• https://rtkpipe.ru/vidy-trub/ogneupornaya-izolyaciya-dlya.html
• https://izhprofibur.ru/drugoe/tolshhina-uteplitelya-dlya-truby-dymohoda.html
• https://stroy-m.org/uteplenie/negoryuchij-uteplitel-dlya-dymohoda.html
• https://santatrade.ru/kak-obmotat-trubu-dymokhoda-bazal-tovoy-vatoy/
• https://politoff.ru/sravneniye-utepliteley-dlya-dymokhodov/
• https://AvtonomnoeTeplo.ru/pechi-kaminy/229-vata-bazaltovaya-dlya-dymohoda.html
• https://1pofasady.ru/uteplenie/bazaltovaya-vata-s-folgoj
• https://pipe-s.ru/negoryuchiy-uteplitel-dlya-trub-dymokhoda/

How to insulate a coaxial chimney of a gas boiler?

In winter, many owners of private houses have to deal with the problem that the coaxial chimney freezes. In such situations, you have to look for ways to insulate a coaxial chimney.

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However, experts advise resorting to another method - reducing the size of the chimney. If the tip freezes due to condensate entering the air intake pipe from a pipe with combustion products, then the length of the inner pipe must be adjusted to the size of the outer one.

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It is best to install two separate pipes and insulate them, because... an insulated coaxial structure is unlikely to save the situation.

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As you can see, insulating a chimney is not such a difficult task. You just need to select all the materials correctly and follow the work technology.

For finishing walls under a boiler

If the walls of the boiler room are wooden, then they need to be pre-treated with fire retardants. The wall behind the boiler must be covered with sheet metal . The remaining area is finished with sheets of plasterboard or glass-magnesium. Then the surface is plastered or covered with ceramic tiles.

Heat-resistant insulation: types of material

Heat-resistant non-flammable thermal insulation materials have a wide range of applications. They are used in the installation of floors, walls, roofs, ventilation and pipelines. It is also not replaceable in the construction of baths and saunas. However, not all insulation materials can be used equally on all objects. There are preferred application features.

Types of non-combustible insulation:

1. Basalt mineral wool. Fire-resistant fibrous sound-proofing material, which is obtained by melting mixtures of metallurgical waste. Not only is it incapable of burning, but it also does not undergo any changes when exposed to high temperatures. Today, it is this material that is most actively used for insulating 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 ratings. This material is environmentally friendly and safe for health.
2. Foam glass. A material that consists of tiny cells. It is produced from broken 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 produced from broken glass. 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” and perfectly fills the voids of the masonry. It is not subject to corrosion and rotting, and attracts cockroaches, ants, and other insects.

Heat-resistant insulation can be purchased at any hardware store.
It should be noted that for each purpose of use it is necessary to select a specific non-combustible insulation. This also determines the form of production of this building material. In shape and structure, it can be foil material, backfill, blocks, cotton wool, mats, rolls, mats, slabs, as well as liquid.

Fire-resistant insulation for chimney

When drawing up an estimate for the construction of a house, no one doubts that it should include the costs of insulating the foundation, roof and walls of the future building. However, when the question arises about insulating chimneys, many do not understand why it is needed. In this article we will tell you how important it is to carry out this work and how to properly insulate chimneys yourself.

Why are smoke ducts insulated?

If the house is heated with gas, diesel fuel, or if it has a heating system using solid fuel boilers, then insulation of chimneys should be carried out without fail. This will make the chimney work as efficiently as possible and significantly increase its service life without repairs.

The main “enemy” of chimneys is condensation. The main task of thermal insulation in this case is to create such temperature conditions under which it will not form in the cavities of the chimneys. Let's figure out why pipes deteriorate over time. When we burn gas, wood or other coolants, steam comes out of the boiler into the chimney along with combustion products. Some of the moisture from it dissipates in the atmosphere, and some settles on the walls of the pipe. Moisture condensation occurs as a result of the fact that the temperature of the chimney and the temperature of the surrounding air differ greatly - the surface of the pipe is hot, and the air around it is cold. A sharp temperature difference between outside and inside, as is known, leads to the formation of condensation in large quantities.

Important! The greater the temperature difference, the greater the likelihood of condensation. Also, this process is greatly influenced by the quality of the fuel (for example, you cannot heat with raw wood), the manufacturability of the heating device and other conditions. Due to the specific nature of the natural energy carrier, the most vulnerable are the chimneys of the heating system, where a solid fuel boiler, stove, or fireplace is used as a heat generator.

The condensate formed in chimneys is a mixture of water and a very active acid solution. Acid is formed as a result of complex processes that take place during the combustion of coolants. It is the sulfuric acid solution that negatively affects chimneys, destroying them from the inside. In addition, if the chimney is made of brick, condensation moisture saturates the stone walls. This even causes freezing even if the heating is turned off. Moreover, so much water can be absorbed that building structures located next to the pipe can also become very wet.

Insulating the chimney helps ensure that the so-called dew point moves beyond the pipe, thereby eliminating the very reason for the formation of condensation, which means that the destruction processes are slowed down and the service life of chimneys is extended.

Condensation is not the only problem with an uninsulated chimney. If the inner surface of the pipe cools too much, the flue gases also lose their temperature. This inevitably affects the draft, which causes smoke in the boiler room, a decrease in the efficiency of the heating system or inefficient fuel consumption.

Principles of thermal insulation of chimneys

Obviously, it is necessary to insulate only that part of the chimney that is located on the street or passes through an unheated attic. Attached pipes fixed to the facade are completely insulated, including their horizontal section that passes through the load-bearing wall.

Chimney insulation can be done in different ways. It makes the most sense to plan insulation work at the stages of drawing up a house construction project. In this case, it is possible to make the walls of the brick pipe such a thickness that will prevent condensation from forming. However, sometimes a chimney is installed in a building that has already been built and is in use. How, then, to insulate it?

Heat resistant sealants

This type of sealing materials is produced on a silicate basis, which makes them stable at temperatures close to 1300-1500 °C. Some of them can even withstand temperatures of 1600 °C for a certain time.

In this case, they are dark gray or black in color and are called fire-resistant pipe sealants (the word “fire-resistant” is on the outside of the tube or package).

Some important rules when using heat-resistant sealants:

• Work with silicate sealing materials is carried out in the temperature range of +5 - +40 °C.
• The required sealing effect is achieved only in the case of rough and uneven surfaces. For this purpose, if necessary, the areas where the composition is applied are treated with abrasive materials.
• In addition, the surfaces should be degreased with acetone and then allowed to dry for 15-20 minutes.
• When the paste hardens in places where the sealant is applied, very strong and hard seams are obtained, so it is not recommended to use heat-resistant compounds for structures operating in vibration conditions.
• Traces of sealing material can be removed with a wet cloth or rag, but only before the material hardens. After hardening, this will require the use of mechanical force and some simple tools.

Fireproof wall coverings

To prevent spontaneous combustion of the walls adjacent to the furnaces, it is necessary to install special cladding made of non-combustible materials with thermal insulation properties.

Thermal insulation for furnaces in this case is carried out in two ways:

1. For cladding, materials are used that have reflective properties and are resistant to high temperatures.
2. The heat-insulating furnace casing is covered with a lining of heat-resistant tiles.

Good reflective qualities are shown by metal sheets covering non-flammable heat-insulating sheets. It is best to use stainless steel, since galvanized steel releases toxic substances when heated.

It is recommended to polish the outer surface of metal sheets, as this helps to better reflect thermal energy.

The following materials are used as thermal insulation:

• basalt cardboard;
• basalt wool;
• minerite;
• asbestos cardboard.

In accordance with SNiP 41-01-2003, installation of the casing is carried out in the following sequence:

1. Installation of insulation with a ventilation gap of 2 to 3 cm. The thickness of the insulating material is no more than 2 cm and no less than 1 cm.
2. Installation of metal sheet.
3. Maintain a distance between the stove and the casing of at least 38 cm.

Ceramic bushings are used to attach materials to the wall: they allow the required gap to be maintained and are resistant to fire. If it is not possible to maintain the specified distance between the stove and the casing, then two layers of thermal insulation sheets should be used. For example, two sheets of mineralite are attached using ceramic bushings. The distance between them is 2-3 cm. The outer sheet is covered with stainless steel.

The design of a room or bathhouse does not always allow the installation of metal cladding. Often it will not fit into the interior of the room. In this case, you can resort to sheathing with heat-resistant tiles, which are attached using a special adhesive that is resistant to high temperatures. We list the suitable materials for cladding:

• terracotta tiles;
• porcelain stoneware;
• tiles;
• clinker tiles;
• Soapstone chlorite

When installing, follow the following rules:

1. The ventilation gap between the wall and the fireproof sheet should be 2-3 cm.
2. Fire-resistant tiles are attached to the installed sheet using special adhesive mixtures.
3. The oven should be located no closer than 15 cm from the surface of the tile.

The following are suitable sheet fire-resistant materials for cladding with cladding:

• minerite;
• fireproof plasterboard containing fiberglass;
• glass-magnesium sheet.

The cladding will help not only to complement the design of the room and maintain a unified style, but also to reduce the permissible distance between the stove and the wall.

Protective screens for furnaces

The thermal insulation material used for stoves must not only prevent the possibility of fire, but also protect people from too harsh infrared radiation. Protective screens for fireplaces, as well as for sauna stoves, are ideally suited for these purposes. They can be made of metal or using brick or decorative stone.

The peculiarity of fireplace screens is that they are made exclusively of metal and can be built-in or mobile. Such designs prevent sparks and hot coals from entering the room, and also, when heated, contribute to the rapid and uniform heating of the air in the room. You can purchase a protective fence or make it yourself. Let's take a closer look at the features of furnace protective screens.

Brick protective screen

Along with insulation, the furnace is insulated using bricks. There are two options: constructing a protective wall and lining the furnace with bricks. In both cases, the brick is laid using an adhesive mixture or clay. The use of cement mortar is considered as a last resort. When lining the stove with brick, it is necessary to provide a gap of 3 to 10 cm, as well as ventilation holes at the bottom and top to ensure better convection and quick heating of the room.

Basalt with cladding

Basalt facing slabs look aesthetically pleasing and provide good fire protection. In addition, this material gives off heat for a long time after heating. You can use this material to cover both a brick screen and the wall itself on top of insulating sheets.

Fire safety cannot be treated negligently - the consequences of carelessness can be tragic. The modern building materials market allows you to choose an option according to your means and taste, while providing reliable protection against fire.

How to do it yourself?

• First, the required number of thermal insulation boards is taken, which are cut to the size of the fireplace insert.
• After this, a special heat-resistant glue (mineral, cement-based) is applied, and the application should be carried out pointwise.
• When installing foil material, glue is applied to the non-foil part.
• After this, the slabs are mounted on the walls. Joints and other openings must be sealed with special heat-resistant aluminum tape, which can also be reinforced.