What can be cooked from squid: quick and tasty

The need to insulate the chimney consists of two important points: protecting the house from fire and preventing leaks through the junction of the chimney and the roof. With a competent approach to this issue, it is also possible to improve the operation of the furnace by increasing traction, to save rafter system roofs intact, avoiding the formation of condensation.

All these points can be solved without the involvement of specialists with their own hands. Today we will consider how the brick chimney on the roof should be insulated.

In this article

Chimney outlet through the roof

To carry out this stage of work correctly, we recommend following some simple recommendations:

the pipe must be planned in advance. It is necessary to determine the place of withdrawal in order to avoid contact with wooden rafters and determine the height of the structure required for high-quality traction in the furnace.
To choose a place, remember that the draft in the furnace is better if the pipe is properly blown by the wind. Therefore, the chimneys are placed closer to the ridge of the roof. The height of the pipe will depend on its location relative to the ridge.
Any chimney must be cut and insulated. Of course, the brick does not heat up as much as the metal, but when working with it, this rule must be strictly observed.

Compliance with fire safety

Competent cutting of the chimney on the roof is one of the most important tasks that lies in the arrangement. Depends on its correct execution Fire safety the whole house.

Fire regulations say that in the areas of contact of the chimney with flammable roofing materials, its temperature should be no more than 50 degrees. In the case of a brick pipe, this point is solved by increasing the thickness of the masonry in the area of its passage through the attic and the roof. In this case, the recommended thickness is at least 38 cm. This value allows you to maintain heat inside the structure and does not allow strong heating of the outer walls.

The basic rules for cutting a chimney are as follows:

It is necessary to observe the gap between the rafters and the roof for any roofing in the range of 25-30 cm.When combustible materials, such as wood or roofing material, are used, this value is 15-30 cm, for those that are not subject to combustion - 10-25 cm.
Particular attention is paid to the passage of the chimney structure through the roofing cake, which includes flammable materials. In this case, the pipe is placed in a special box that separates it and roofing materials... It is made of wooden elements and is filled inside non-combustible insulation such as stone wool. In the resulting hole in the roof, the insulating films are cut in the form of an envelope and fixed unfolded to the rafters. Places of joints roofing cake and the flue duct are insulated to prevent leaks.

Passage of various types of chimneys through the roof

Roof chimney insulation and bypass for different types pipes are different:

Modern construction market proposes wide choose finished cuts and penetrations for different types chimneys. The use of such kits greatly simplifies the installation of the pipe with your own hands.

Chimney insulation

Waterproofing can be done by various means, but if you decide to insulate the chimney on your own, we recommend that you pay attention to roll waterproofing... Finishing with these materials is simple and allows you to get a high-quality result.

This sequence of work should be adhered to, which implies the insulation of the pipe before laying. roofing:

First of all, it is necessary to clean the chimney and the adjacent roof from dust and dirt and treat all surfaces with a primer.
A diffusion membrane is glued to the primer with an overlap of the material on the pipe by 15-20 cm, which will not allow moisture to penetrate into the roof.
The top and bottom tie are made from sheet metal. The corners are attached with dowels to the bars stuffed over the lathing.
Waterproofing is spread in sheets with overlapping joints, which are additionally coated with mastic.
Further, the roof is laid on top and a special plastic apron is laid on top of it, all joints are again insulated.

The finishing touch can be the finishing of the chimney. It can be overlaid facing brick that will give it a complete and stylish appearance, reminiscent of a classic chimney.

It is important to note that if you plan to finish the chimney, then you need to worry in advance about a more solid base for the pipe. Ideally, it should come out from under the roof covering and rest on load-bearing walls or floor slabs.

Let's summarize

Chimney insulation is associated with two important points:

Chimney fire safety;
Insulation.

It is quite possible to make a chimney outlet through the roof on their own without the involvement of specialists. It is only necessary to strictly observe the fire safety requirements and carefully seal up all the pipe and roof junctions so that the liquid from the outside cannot penetrate under the roof.

A well-made chimney is not only the safety of the house, but also the excellent operation of the stove and the absence of unwanted roof leaks.

The stove is folded, and the chimney stands proudly above the roof of the house. Do you think the job is over? Not at all - it's time to think about how to insulate the chimney pipe and protect the house from fire, and the roof from leaks. It is good if you thought about this question even during the design of the furnace - in this case, the insulation of the chimney will be reliable and safe. It is more difficult to isolate an already built chimney, sometimes this work entails a change in the design of the floors and roof. However, the costs will be offset by a sense of safety and comfort.

It is necessary to isolate the chimney from two negative destructive factors: from overheating of structures and from leaks at the joints. Therefore, in the article we will consider two types of chimney insulation:

Fireproof thermal insulation;
Waterproofing.

It is recommended to immediately carry out complex insulation, solving not only the main problems, but also improving the operating conditions of the furnace. For example, insulating a pipe running through an unheated attic reduces the risk of overheating of wooden roof elements and reduces the risk of condensation, which can lead to excessive soot deposits, corrosion or pipe breakdown. Waterproofing the pipe will help to avoid rotting of the truss system and ceilings, as well as the destruction of the pipe if it gets wet.

Methods for fire insulation of chimneys

The simplest and most reliable, but not always the most cheap way- install a "sandwich" type chimney made of ceramics or metal. In such chimneys inner tube, which carries out the function of removing smoke, is made of heat-resistant steel or ceramics and is thermally insulated with non-combustible insulation: mineral, stone or basalt wool. The outer layer of the sandwich chimney is made of steel or ready-made claydite-concrete blocks.

Made ceramic chimney- a safe solution to the problem

Prefabricated chimneys are completed with elements for fastening, revision, maintenance, as well as for connecting several heating devices. Installation of such a chimney is not difficult, but it requires compliance with the instructions, only then it will be completely safe.

Thermal insulation of a "sandwich" pipe

Video - sandwich diaphragm for the passage of the pipe through the ceilings

Another insulation method used in the construction of a stove is a brick chimney. Due to the low thermal conductivity of the brick, its walls do not heat up dangerously high temperatures, therefore, no additional measures for the insulation of such a chimney are required, except for the correct execution of the fire-prevention cutting of ceilings and roofs. To save and facilitate the construction, a brick chimney is sometimes finished with a metal or ceramic pipe. In this case, they are thermally insulated according to the technology described below.

Thermal insulation of metal and ceramic single pipes is possible using boxes made of non-combustible materials and mineral non-combustible thermal insulation - stone or basalt wool. It is possible to operate such chimneys without thermal insulation, but performing fire-prevention cutting according to all the rules is mandatory in any case.

Chimney waterproofing methods

Chimney waterproofing is installed in the place of its exit to the roof. The larger the pipe and the farther from the ridge it is, the more difficult the operating conditions await it: with rain, more abundant flows of water, in winter - an increased snow load. With insufficient waterproofing, rain and melt water penetrates inside the house, leading to leaks, decay of wood and destruction of concrete and brick structures, including the chimney itself.

The method of waterproofing depends largely on the shape of the pipe and the type of roofing. For round pipes use metal or polymer cuts, for rectangular pipes - metal aprons and abutment strips. How to waterproof a pipe is described in detail in the article, and then we will talk about the technology of thermal insulation of the chimney.

Chimney pipe insulation

Before proceeding with the insulation of the chimney pipe, it is necessary to check compliance with the requirements of SNiP 2.04.05-91 and, if necessary, correct the shortcomings:

The height of the pipe to ensure good draft and allowable temperature of flue gases at the outlet should be 5 meters or more;
If the roofing is a combustible material - slate, ondulin, roofing material - a spark arrester must be placed on top of the pipe - a fine-mesh metal mesh;
The distance between the chimney pipe and combustible structures - ceilings, walls, rafter systems - must be at least 250 mm;
A fire-prevention distance must be maintained between the upper ceiling of the stove and the ceiling. For metal stoves, it is at least 1.5 meters, for brick stoves with a two-row overlap - 0.5 meters, with a three-row overlap - 0.25 meters, provided the ceiling above the stove is finished with non-combustible materials;
In places where the brick chimney passes through the ceiling, fluff is performed - a thickening of the pipe. The thickness of the fluff is 1-1.5 bricks.

Plastering a brick pipe

The brick pipe does not heat up very much from the outside, therefore it is necessary to insulate it rather in order to improve operating conditions and extend its service life. Most affordable way insulation of a brick chimney - plastering cement mortar or a solution based on cement and lime. Instead of sand, you can add sifted slag crumbs to it.

Solution composition:

1 bag of cement (25 kg);
2 buckets of slaked lime;
10 buckets of sand or a mixture of sand with slag crumbs;
5 buckets of water.

To prepare the solution, mix 3.5-4 buckets of water with a bag of cement and 2 buckets of slaked lime - fluff. After thorough mixing, add sand and slag crumbs in parts, as well as the remaining norm of water. The resulting composition must be used in cool weather within 5 hours, and in hot weather - in 1-2 hours, so you can cook it in parts.
With large irregularities in the pipe, the plaster layer turns out to be quite thick, therefore it is recommended to first seal all the cracks and drops with the specified solution, and then cover the pipe with a reinforcing mesh.
Plastering is carried out in two layers. For the first layer, the solution is diluted a little more, to a creamy state, and applied by spraying: they take a certain amount of solution on a trowel or spatula and sprinkle it on a dust-free and slightly moistened brick surface. The first layer is not leveled.
A thicker solution is needed for the second layer. It is applied with a trowel and rubbed to a smooth surface. It is necessary to plaster the entire pipe from floor to ceiling or roof.

Sheathing of brick pipes with asbestos-cement sheets

This method surpasses plastering in terms of heat saving by 2-2.5 times and consists in gluing asbestos-cement slabs to cement-lime mortar on the outer walls of the pipe.

According to the above technology, a plastering solution is prepared.
The pipe is reinforced with a mesh and the first layer of solution is sprayed on. Dry it.
Asbestos-cement sheets are cut to fit the pipe size. The second layer of the solution is applied to the sheets of asbestos cement and glued to the surface of the chimney.

The disadvantages of this method include the low environmental friendliness of asbestos - it emits carcinogens, therefore it is impossible to use this method of isolation in living rooms. In a non-residential attic, thermal insulation of the chimney with asbestos will reduce the temperature drop from the inside and outside of the chimney and significantly reduce the formation of condensation, as well as improve its fire protection.

In addition, a brick pipe can be sewn up with sheet metal using a layer of insulation. How to do this can be found in the video.

Video - pipe sheathing with sheet metal

Insulation of metal single pipes

The most dangerous version of the chimney in terms of fire safety is a metal pipe that is not protected by a heat insulator. The distance from such pipes to wooden and plastic structures should not be less than 0.6 meters. But even observing this distance will not protect you from burns if accidentally touched, so it is better to isolate the pipe without waiting for problems.

Uninsulated metal pipe is a common cause of fires

The easiest way to insulate a single pipe is to wrap it with a layer of non-combustible insulation, for example, basalt wool, and protect it from above with metal or plaster. The melting point of this material approaches 1000 degrees, which is significantly higher than the smoke temperature.

Basalt wool mats with a thickness of at least 5 cm are wrapped around the pipe with an overlap and fasten it by wrapping it over with steel wire.
Wrap the heat-insulated pipe with a reinforcing mesh, fix it, and plaster it according to the technology described above in two layers with a cement-lime composition.
Plaster can be replaced with thin sheet iron by rolling it along the diameter of the insulated pipe and riveting at the junction of the edges.

Insulation of floor and roof passages

The most critical sections of the chimney insulation are the passages through the ceilings, therefore they are given special attention. It is imperative to insulate passages when using any chimney: sandwich pipes, brick, and metal insulated.

Passages are carried out in compliance with the following conditions:

In the ceilings and the roof, holes are made for the passage of the pipe so that there is a distance of at least 25-35 cm from its edges to the walls of the pipe.
The edges of the hole are treated with asbestos-cement or metal sheets, arrange a box for thermal insulation.
The space around the pipe is filled with stone or basalt wool without the formation of voids and gaps.
Wooden structures located in the immediate vicinity of the chimney passages are treated with fire retardant compounds.

Insulation of passages through floors with basalt wool

Having figured out how to insulate a chimney pipe, you can easily do this job, but remember that even an insulated chimney pipe requires correct operation: clean soot at least three times a year, remove ash from the furnace in a timely manner, do not burn materials and objects (garbage) not intended for the furnace in it. All this is the key to a long and safe chimney service.

Having your own country house, you need to take care of heating the rooms in the cold season. A stove or other heating system needs a chimney. The smoke exhaust pipe is the main element of the heat supply communications. For its effective functioning, it is necessary to insulate the chimney from the outside.

The relevance of thermal insulation

Moisture and smoke generated during fuel combustion are aggressive factors affecting a brick chimney. The temperature difference in the cold season and the accumulated moisture deposited on the walls fills the microcracks with water, and the stone structure collapses from the inside. Small ice crystals crush from the inside and destroy it. An insulated chimney allows you to exclude this.
In the process of combustion, condensate is formed on the surface of the gas duct, which contains a chemical series of oxides. Interacting, the elements form weak acids (carbonic, sulfuric, etc.) that can destroy the metal surface. It is for this reason that the chimney must be insulated.
Correct implementation of the installation of thermal insulation allows you to prevent a fire inside the premises and will not allow the roof overlap to ignite. Well-heated chimney pipes improve traction in the fireplace, boiler and stove, there is less tar and burning residue in it. The efficiency of the heating unit is significantly increased.

Positive factors of insulated chimney

Before answering the question - how to insulate a pipe, it is necessary to highlight the advantages of an insulated chimney.
The insulated gas outlet protects the heating system from the effects of the external environment and combustion products. Of course, thermal insulation cannot completely protect the structure from destruction, but it will extend its service life. This is due to the following factors:

Pipe insulation allows maintaining the thermal balance in the middle of the structure, excluding the possibility of aggressive acids and condensate falling onto the walls. The combustion products are completely volatilized together with the smoke stream.
Chimney insulation minimizes the possibility of temperature differences between the cooled flue duct and hot steam.
Energy saving properties are increased, contributing to fuel economy.
The strength of the steam outlet structure increases due to the reinforcing frame.

Correctly selected chimney insulation increases the frost-resistant properties of the system, ensures long-term preservation of its appearance and increases the service life, which is very important.

The choice of material for thermal insulation

The main question of the owners country houses having an autonomous heating system- how to insulate the chimney. In order to reliably insulate the outlets for a furnace or boiler, materials with high degree thermal insulation, ensuring the thermal balance of the chimney on the roof.

Basalt insulation

Relevant for insulating a chimney with mineral wool or basalt. Insulation is obtained from a molten volcanic rock - gabbo-basalt. It is converted into fibers, so that the insulating material has the following advantages:

retains up to 95% heat;
characterized by good vapor permeability;
differs in chemical and corrosion resistance;
prevents the growth of fungus and mold on the surface of the chimney on the roof;
vibration and heat resistant;
made of ecological materials;
does not undergo destruction under the influence of ultraviolet radiation.

Stainless steel casing

Metal "armor" in the form of a pipe made of of stainless steel, is used as an option for insulation. It is able to provide full protection against mechanical damage, moisture and other aggressive factors.
The chimney cover is mounted on a pipe on the roof. The space between the pipes is filled with basalt wool, the outside is covered with insulation, 5 cm thick. An asbestos chimney can be wrapped with this insulation.

Wood shields

Wooden shields are considered one of the simple options insulation of the chimney pipe. Thermal insulation is made in the form of a timber frame made of plates of the appropriate size. On top of it, slate or other flooring is fixed, from which the roof of the dwelling is made.
After the pipe is completely covered with wood, the empty cavity is filled with felt, slag, sand, mineral wool. Frame seams must be covered with a waterproofing compound.

Slag-reinforced concrete insulation slabs

Insulation of a chimney in a private house using iron and slag concrete slabs provides the smallest distance between the joints on the structure. The space inside and the corners are reinforced with mesh or wire, gypsum, clay and sand are poured in the form of a solution. Plaster is applied over the tile insulation.

Specificity of insulation works

When insulating the chimney with our own hands, we take into account that during the operation of the heating boiler, the temperature in the flue duct can reach 200-300 degrees.

In the quality of insulation, it is better to choose a material with high heat-resistant properties: glass wool, mineral wool, basalt.

In the building materials market, thermal insulation is sold in the form of finished cylinders with a special foil screen. With their help, the gas duct and the adjacent roof elements are made out - protecting them from fire and the ingress of cold air. Tubular structures are sold in different diameters, which allows to wrap different sized smoke outlets.

Thermal insulation installation regulations

Before insulating the chimney pipe, you need to make sure that it is installed correctly.

The flue is carried out in accordance with the technological standards specified in GOST 52953-2008

The combustion products outlet pipe should be 5 m high. This indicator provides optimal draft in the heating system.
A distance of at least 250 mm is required between the roof overlap and the outer element of the boiler room.
If the building is covered with combustible materials, in particular, slate, roofing felt, ondulin, then the insulated smoke exhaust structure must be equipped with a spark arrester.

After making sure that the system is installed correctly, you can proceed to the subsequent work on winding with thermal insulation.

The main methods of insulation

The metal chimney pipe is insulated using various methods.

Steel chimney insulation technique

The chimney is insulated using special solution... The composition is prepared from a dry mixture and water. The solution is applied with a spatula to the surface, spreading over the entire area. Then a fiberglass reinforcing frame is fixed on it, on which plaster is applied.

Gas boiler chimney insulation

Insulation for pipes gas boiler must have a number of improved heat-insulating and heat-resistant qualities.

Sandwich structures block the deposition of condensate on the surface, while saving energy.

The chimney sandwich consists of a layer of mineral wool and two metal pipes. The upper element, with a large diameter, is the main sleeve, the smaller one is part of the steam outlet.
How to insulate such a chimney pipe with your own hands? It is necessary to follow the recommendations:

Holes with a diameter of 25 cm larger than the chimney duct are made in the roof of the roof and ceilings.
At this stage, it is necessary to insulate the chimney pipe with a layer of basalt wool. The thickness of the winding must be at least 5 cm.
The insulation around the pipe is fixed with steel wire.
A larger casing is worn on top.

Upon completion of the work, the chimney is connected to a heating source and the surrounding riser is filled with expanded clay, clay or asbestos.

Smoke ducts for a bath

The insulation of the chimney in the bath is aimed at improving the heat transfer from the heating source, which is a stone stove.

You can isolate the chimney in the steam room using the following options:

thermal insulation is a material made of foamed polyethylene hidden between sheets of foil. Insulation rolls with a thickness of 2 - 10 mm are offered on the market. The foil surface reduces overheating of the pipe. The insulation is wrapped around the chimney, fixing it with wire or metallized tape;
Filgoizol consists of two balls: foil, which saves over 90% of the heat in the room, and a heat insulator. The material is used to cover the walls and ceilings of the sauna, providing a thermos effect;
sandwich pipe, consisting of several sections. This option is suitable for saunas and baths with an iron stove.

Insulate metal pipe- means to ensure the optimal functioning of the heating system. Correct installation do-it-yourself chimney insulation allows you to increase the operational life of the structure and heat generator, and also prevents fire.

Choosing a place for the chimney
Arrangement of fire insulation
Waterproofing device

Fireplaces and stoves are found quite often in country houses and at the dachas.

The method of insulating the chimney depends on the chimney design.

The installation of these devices is associated with the solution of a number of issues. One of the most important is the insulation of the chimney on the roof after installation.

Correct implementation is a guarantee of safe and comfortable use of the stove or fireplace.

Choosing a place for the chimney

The installation and insulation of the chimney can be divided into two main stages: making a passage for the chimney through the roof and its high-quality waterproofing. The roofing cake must be reliably protected from combustible materials passing through the chimney, and the outlet must not cause leaks on the roof.

The correct choice of the place for the outlet of the chimney is half the success in the installation of the chimney. This issue must be resolved even at the stage of building a house. Correct placement greatly simplifies the isolation arrangement. Long-term practice suggests that the best place for installation, this is a slope next to the ridge. This technique allows you to reduce the likelihood of precipitation getting inside and does not add problems during the installation of the rafter system.

Chimney assembly diagram.

When erecting a chimney, you should be guided by the standards fire safety, according to which the place of contact between the pipe and the roof should not be heated to temperatures above 50 degrees. This problem can be easily solved if the pipe is built from bricks. The chimney wall at the point of contact with the roof (according to the standards) is laid out in one and a half bricks. Thus, a thickness of 35-40 cm is achieved. However, it is not always convenient to prepare a hole in the ceilings for such a chimney. For this reason, a metal pipe is most often used for its manufacture. To protect the roof structure from fire, the chimney on the roof is insulated.

These measures also help to improve the quality of heating. Condensate does not accumulate or drain on the chimney, the evaporation of which leads to an increase in pressure and a decrease in draft. If a large amount of condensation accumulates, smoke may result. Poor pipe insulation leads to the fact that the heat transfer of the heating system decreases and it is necessary to organize additional insulation at home.

Arrangement of fire insulation

Chimney pipe insulation scheme.

According to fire safety requirements, a special box is constructed for the chimney, inside which it is placed. The box should not fit snugly against the pipe walls. The distance between them must be at least 150 mm. The resulting space is filled with non-combustible materials that are characterized by low thermal conductivity. Mineral wool is ideal for this. The box can be made of wood or galvanized steel.

To install the chimney, you need to cut the roofing pie at the place of its passage. Each layer is cut separately and fixed to the rafters. The insulation is fixed along the diameter of the passage. For this, a special frame or crate is used. Reliable fire insulation of the chimney is ready.

Waterproofing device

The chimney must not cause a roof leak. For this, a reliable waterproofing must be arranged. The option of arranging insulation is selected depending on the materials from which the pipe and roof are made.

The bars should be at least 130 mm from the pipe.

First, an internal apron must be installed in the place where the chimney adjoins the roof. For its construction, the lower abutment strips are used. They should start laying from the bottom wall of the chimney. If the pipe is made of brick, then in the place where the upper edge of the plank adjoins, a recess is made into which the top of the plank is inserted and sealed. The bottom edge should be secured with self-tapping screws. Junction strips are laid out along the perimeter of the entire pipe with an overlap of at least 150 mm.

Then the so-called tie should be mounted. For this, flat roofing material is used. The main purpose of the tie is to drain water, so its top is fixed under the lower apron, and the bottom is brought out to the cornice. In order for the water flow to be directed, it is better to bend the edges in the form of a side.

The tie and apron are covered with the top layer of the roof. After carrying out all these works, you can mount an external decorative apron. It is fastened in the same way as for the internal one, with the difference that it is not necessary to make a recess.

Roofers advise not to rigidly fasten the apron to the pipe. This will protect the structure from damage during thermal expansion.

Modern manufacturers suggest using a ready-made roofing passage to ensure reliable sealing of the roof opening. This will greatly facilitate the work on the chimney arrangement. Finished construction consists of a base and apron made of stainless or galvanized steel or other materials, such as silicone or heat-resistant rubber. Due to their flexibility, these materials provide reliable waterproofing on roofs of any shape, with different angles of inclination, made of various materials... In addition, a variety of color solutions make it possible to choose the passage for the pipe according to the color of the roofing.

Traditional metal roof passages do not always provide a good connection to a roof made of tiles, slate or ondulin and other profiled materials.

All work must be carried out in accordance with existing building codes and fire safety. Correctly executed hydro and thermal insulation of the chimney will provide reliable warmth and comfort in the house.

Insulation of the chimney on the roof for safe use

Insulation of the chimney on the roof is the execution of a passage through the roof and its high-quality waterproofing. These measures help to improve the quality of heating.

How to insulate a chimney on a roof with your own hands

Chimney insulation has two main functions: it protects the structure from overheating, possible fires and fires (fire insulation) and prevents moisture from entering the house (waterproofing).

It is recommended to carry out a complete insulation of the chimney - this way you will not only solve the main problems, but also improve the working conditions of the furnace. For example, high-quality thermal insulation of a chimney running through an attic that is not heated prevents overheating of wooden roofing elements, which reduces the risk of condensation, which can lead to excessive soot formation, corrosion and destruction of the chimney. Waterproofing will prevent the process of decay of floors and rafter systems. The insulation of the chimney, if you have certain knowledge in the field of repair and construction, can be done with your own hands.

Do-it-yourself fireproof insulation of the chimney

Fire safety prescribes that in places of contact between the chimney and roof elements made of combustible materials, the temperature should not be higher than 50 degrees.

The perimeter of the hole prepared for the chimney outlet should be 150 mm. exceed the perimeter of the pipe on each side if it comes about combustible materials, and 100 mm. on each side if we are talking about non-flammable. If the pipe will pass through the finished roofing pie, the passage should be protected with a box, each side of which should be 150 mm. more than the corresponding sides of the chimney. The resulting distance between the pipe and the box must be filled with non-combustible thermal insulation material that is not afraid of moisture.

The insulating films of the roof pie must be cut with an "envelope", then tightened to crossbeam or rafters and fix it securely. The waterproofing, which is already in the roofing cake, should be additionally pressed against the box with a crate, and the vapor barrier should be fixed with frames made of plastic or wooden slats.

To achieve the maximum thermal insulation effect, it is necessary to additionally wrap the joints of the box and insulating films with special non-combustible tapes.

Chimney waterproofing

Chimney waterproofing can be done using various materials, but if you decide to do it yourself, we recommend that you choose roll waterproofing materials for this. The waterproofing process is quite simple, the main thing is to consistently follow the sequence of stages of work:

Preparatory work consists in cleaning the pipe and roof from dirt and dust and treating the surface with mastic or primer.
A diffusion membrane must be glued on top of the mastic / primer layer. It is necessary to glue on the surface of the roof, wrapping the edges (15-20 cm) of the membrane on the pipe so that moisture cannot penetrate under it;
It is necessary to make the lower and upper "ties" from a sheet of metal, and fix the bars on top of the crate, on which the corners should be fixed with dowels.
The waterproofing material is laid in sheets with an overlap so that the water flows off correctly. The joints are insulated with mastic, the cracks are treated with heat-resistant sealants.
On top of the resulting structure, the material from which the roof is made is laid out, and then a special plastic apron. The joints are also insulated.

The effectiveness of the integrated insulation of the chimney and the durability of its service depend on how accurately you follow the instructions above.

Do-it-yourself chimney insulation on the roof, how to do it right

Do-it-yourself fireproof insulation of the chimney. Chimney waterproofing.

How to insulate a chimney pipe - proven and reliable options

When building your own home ownership, as a rule, they equip a fireplace or stove. Therefore, the problem of removing the chimney is so urgent. Correctly and reliably made insulation is important for the chimney, otherwise it is impossible to be sure about the fire department of the safe and comfortable stay of family members in the house.

If the stove is already laid out, and the smoke exhaust structure rises above the roof of the building, this does not mean that the work on its arrangement has been successfully completed. Before using the heating unit, you still need to decide how to insulate the chimney pipe on the roof and, as a result, protect the house from leaks and fire.

It is advisable to think about this problem before the furnace design is drawn up, and then the insulation will turn out to be more reliable. As for the previously built chimney, such work is almost always associated with changes made to the structure of floors and roofs. Regardless of the decision how to insulate the chimney on the roof, all the costs incurred will be made up for with a sense of security, and hence comfort.

Types of insulation of chimney structures

Pipe insulation for the furnace should be made from negative factors:

from possible overheating of the chimney structure;
from leaks at the joints.

Therefore, when deciding how to wrap the chimney pipe, increased attention should be paid to fireproofing thermal insulation and waterproofing. Experts recommend performing insulation measures in a comprehensive manner. This will help to solve not only the above problems, but also to improve the operating conditions of the furnace unit.

For example, if thermal insulation of a chimney laid through an unheated attic, the possibility of overheating of wooden roofing elements is reduced and the risk of condensation, which leads to corrosion, increased soot deposition or destruction of the pipe, is reduced. Waterproofing the flue structure will protect the rafter system and ceilings from decay.

Fire insulation options for smoke exhaust systems

The simplest and most reliable, but expensive method of isolation chimney- This is the installation of a "sandwich" type chimney made of metal or ceramics.

In such structures, the inner pipe, intended for smoke removal, is made of heat-resistant steel or ceramics, while non-combustible materials are used for its thermal insulation - mineral, stone or basalt wool. The outer part of the chimney sandwich is made of steel or expanded clay concrete blocks.

The kits for prefabricated chimneys include elements for fixing the structure, revision, maintenance and for connecting heating units. Their installation is simple, but you still need to follow the instructions in order to fully ensure safety.

There is another option used during the installation of the furnace unit - the construction of a brick chimney. Due to the low degree of thermal conductivity of bricks, its walls will not heat up to extremely high temperatures and, as a result, additional measures related to its insulation will not be required. It will only be necessary to correctly carry out the fire-prevention cutting of the floors and the roof.

In order to save and reduce weight, sometimes the construction of a brick chimney is completed by installing a ceramic or metal pipe. In this case, thermal insulation is made according to the technology described below.

When such work is performed for single pipes, boxes made of non-combustible materials can be used. Chimneys of this type are allowed to be operated without thermal insulation, but fire-prevention splitting is required in accordance with the rules.

Chimney waterproofing methods

Chimneys should be waterproofed where they are led out onto the roof. The further they are from the ridge, and the larger the pipe, the more difficult the operating conditions will be.

Precipitation, in the event that the insulation of the chimney pipe is insufficient, begins to penetrate into the interior of the building. As a result, leaks occur, the floors rot and collapse.

The method of waterproofing usually depends on the shape of the pipe and the material from which the roof covering is made. For round products, either metal or polymer cuts are used, and for pipes with a rectangular section - aprons and metal abutment strips.

Chimney insulation

Before insulating the pipe on the roof, you should make sure that the requirements specified in SNiP 2.04.05-91 are met, and if any deficiencies are found, eliminate them:

To ensure the required traction force and prevent the furnace gases from exceeding the temperature of the furnace gases, the height of the pipe should start from 5 meters.
When the roof covering is made of roofing felt, slate or other combustible material, a spark arrester is installed on top of the pipe, which is a metal mesh with small cells.
A gap of at least 25 centimeters must be left between combustible elements such as floors, rafters and walls and the chimney.
A fire-prevention distance is maintained from the upper ceiling of the stove to the ceiling. For metal aggregates, it is at least 150 centimeters, for brick ovens with double-row overlap -50 centimeters, with three-row overlap -25 centimeters, provided that the ceiling surface above the heater is finished with non-combustible materials.

In the place where the brick chimney crosses the ceiling, they equip a fluff with a thickness of 1 - 1.5 bricks.

Insulation materials for bath pipes

Since bath buildings are often built of wood, these objects need to be insulated for chimneys, stoves, ceilings, walls, since this material is highly flammable. You need to think about how to secure the pipe in the bath, making the thermal insulation of the smoke exhaust structure so that it cools down more slowly and condensation does not collect on it.

It will be a mistake to decide to insulate the pipe in the bath by attaching an iron sheet to the ceiling, since it gets very hot. As an option, than to overlay the chimney, use refractory red brick, but in this case, you need to strengthen the foundation.

When solving the problem of how to wrap a metal chimney pipe in a bath, experts distinguish foil insulation and thermal insulation.

Plastering a pipe made of bricks

The outer surface of brick pipes heats up slightly, so they are plastered to improve operating conditions and extend their service life. The most affordable option for insulating chimneys from bricks is plastering with a solution using lime and cement. In its composition, instead of sand, you can add slag crumb, pre-sieved.

A layer of plaster, when there is a lot of unevenness on the pipe, turns out to be quite thick, therefore, first it is better to seal up all the existing drops and cracks on the surface with a solution, and then cover it with a reinforcing mesh.

Plastering is performed in two layers, using the entire pipe. For the first time, the solution is brought to the thickness of sour cream and applied by spraying and not leveled. For the next layer, the composition is made thicker. It is applied with a trowel and then rubbed until a smooth surface is obtained.

Use of asbestos cement sheets

Such a method of insulation for chimney pipes made of bricks, such as sheathing of pipes with asbestos-cement materials, in terms of heat saving, surpasses plastering several times. Asbestos cement slabs are glued to the outer surface with a cement-lime mortar.

After preparation of the composition, the smoke exhaust structure is reinforced with a mesh, and the first layer is applied by spraying. When it dries, the asbestos-cement slabs are cut according to the size of the pipe. The next layer of the mixture is applied to the pieces of insulation and attached to the surface of the chimney.

But this method has a big drawback - asbestos contains carcinogens and therefore cannot be used in residential premises.

Insulation of single metal pipes

The most dangerous option for arranging a chimney in terms of fire safety is a pipe made of metal products, which is not protected by a heat insulator. The distance between it and wood or plastic elements must be at least 60 centimeters.

But even the presence of such a gap is not able to protect against burns in case of accidental contact - for this reason, it is advisable to isolate the pipe until problems arise.

When deciding how to wrap a pipe in a bathhouse or a house, if it is single, this is the use of a non-combustible insulation, for example, basalt wool, which is protected from above with metal or plaster. This heat insulator has a melting point of 1000 degrees.

The sequence of actions is as follows:

Mats of 5 cm thickness, consisting of basalt wool, are laid with an overlap around the pipe and fixed with steel wire.
The insulated chimney is wrapped with a reinforcing mesh, fixed and plaster is applied on top in two layers.
Instead of plastering, you can use thin sheet iron, which is folded and riveted at the point where the edges meet.

Floor insulation

There is a certain order of how to insulate the chimney pipe in the ceiling:

Holes are made in the ceilings and the roof for laying the smoke exhaust structure so that a distance of at least 25 -35 centimeters remains from their edge to the walls of the pipes.
The edges of the holes are covered with metal or asbestos-cement sheets or equipped with a heat-insulating box.
The space around the pipes is tightly filled with thermal insulation wool.
Wooden structures located near the chimney passages are covered with special - fire retardant compounds.

Having figured out how to insulate and how to wrap a pipe in a bathhouse or house, you can do this work without much effort.

But even a high-quality insulated chimney should be operated correctly:

clean soot at least 3 times throughout the year;
remove ash from the stove in a timely manner;
do not burn foreign objects and materials in the unit.

Chimney pipe insulation: how to insulate a chimney, overlap, how to wrap a metal pipe, how to secure, how to wrap and insulate a chimney on the roof

We make the insulation of the chimney on the roof

The need to insulate the chimney lies in two important points at once: protecting the house from fire and preventing leaks through the junction of the chimney and the roof. With a competent approach to this issue, it is also possible to improve the operation of the furnace by increasing traction, to keep the roof truss system intact, avoiding the formation of condensation.

All these points can be solved without the involvement of specialists with their own hands. Today we will consider how the brick chimney on the roof should be insulated.

Chimney outlet through the roof

To carry out this stage of work correctly, we recommend following some simple recommendations:

the pipe must be planned in advance. It is necessary to determine the location of the outlet in order to avoid contact with wooden rafters and to determine the height of the structure necessary for high-quality traction in the furnace.
To choose a place, remember that the draft in the furnace is better if the pipe is properly blown by the wind. Therefore, the chimneys are placed closer to the ridge of the roof. The height of the pipe will depend on its location relative to the ridge.
Any chimney must be cut and insulated. Of course, the brick does not heat up as much as the metal, but when working with it, this rule must be strictly observed.

Compliance with fire safety

The basic rules for cutting a chimney are as follows:

It is necessary to observe the gap between the rafters and the roof for any roofing in the range of 25-30 cm.When combustible materials, such as wood or roofing material, are used, this value is 15-30 cm, for those that are not subject to combustion - 10-25 cm.
Particular attention is paid to the passage of the chimney structure through the roofing cake, which includes flammable materials. In this case, the pipe is placed in a special box that separates it from the roofing materials. It is made of wooden elements and is filled with a non-combustible insulation, such as stone wool, inside. In the resulting hole in the roof, the insulating films are cut in the form of an envelope and fixed unfolded to the rafters. The joints between the roofing cake and the chimney are insulated to prevent leaks.

Passage of various types of chimneys through the roof

The insulation of the chimney on the roof and its bypass are different for different types of pipes:

Chimney insulation

Waterproofing can be done by various means, but if you decide to insulate the chimney on your own, we recommend that you pay attention to roll waterproofing. Finishing with these materials is simple and allows you to get a high-quality result.

This sequence of work should be adhered to, which implies the insulation of the pipe before laying the roofing:

First of all, it is necessary to clean the chimney and the adjacent roof from dust and dirt and treat all surfaces with a primer.
A diffusion membrane is glued to the primer with an overlap of the material on the pipe by 15-20 cm, which will not allow moisture to penetrate into the roof.
The top and bottom tie are made from sheet metal. The corners are attached with dowels to the bars stuffed over the lathing.
Waterproofing is spread in sheets with overlapping joints, which are additionally coated with mastic.
Further, the roof is laid on top and a special plastic apron is laid on top of it, all joints are again insulated.

Lining of the chimney

The finishing touch can be the finishing of the chimney. It can be overlaid with facing bricks, which will give it a complete and stylish look, reminiscent of a classic chimney.

It is important to note that if you plan to finish the chimney, then you need to worry in advance about a more solid base for the pipe. Ideally, it should come out from under the roof covering and rest on load-bearing walls or floor slabs.

Let's summarize

Chimney insulation is associated with two important points:

It is quite possible to make the conclusion of the chimney through the roof on our own without the involvement of specialists. It is only necessary to strictly observe the fire safety requirements and carefully seal up all the pipe and roof junctions so that the liquid from the outside cannot penetrate under the roof.

A well-made chimney is not only the safety of the house, but also the excellent operation of the stove and the absence of unwanted roof leaks.

Do-it-yourself roof chimney insulation

The technology of the chimney outlet through the roof is described in compliance with the main fire-prevention and insulating points. Step-by-step algorithms are given for performing

Any private house has a stove or fireplace, as well as its own bathhouse. The chimney almost always goes to the roof of the building. Its durability, as well as fire safety, directly depends on the correct and reliable insulation of the chimney. For this reason, the question arises, how to insulate the chimney and what material to use to insulate the metal pipe? How to do it right with your own hands?

Insulation of the chimney in the bath

The issue of chimney pipe insulation often arises from the owners of private houses. Such work must be performed in order to protect the structure from fire and destructive factors:

overheat;
leakage at the butt joints.

Experts recommend perform such work in a comprehensive manner, using hydro and fireproof thermal insulation. When choosing material for insulation, first of all, you need to think about the safety of the family. A live fire in a closed room always poses a danger to human life. If you do not perform high-quality and reliable protection overlapping, it can easily ignite.

Traditionally, wood is used for the construction of the bathhouse. It is easily flammable. Most people naively think that the cladding on the ceiling with metal sheets can serve as protection against fire and therefore the chimney is not insulated. Metal sheets heat up and do not protect from overheating and ignition. Sometimes the chimney is insulated with red brick, but such a material is not the most suitable design for a wood bath.

Big choice modern materials allows you to choose the most suitable and securely insulate the chimney... Among the most demanded and popular are:

For a bath also used red brick... It withstands high temperatures well and retains heat for a long time. When using red bricks, the masonry must be done correctly. The duration of the structure's operation will depend on its quality. It is inappropriate to save money here, since the cost of repairs will cost several times more.

What to use for winding a metal chimney?

In the old days, people used clay and asbestos to isolate the chimney in the bath, as well as other henchmen natural materials... The main thing in any material for insulation is poor thermal conductivity, so that there is no fire from high temperatures. The chimney and stove heats up very quickly and therefore it is important to properly insulate the chimney for fire safety.

Inside a structure with insulation at the time of heating condensation will not accumulate which is very important. It will cool down slowly, it will not deteriorate so quickly, and its service life will be longer.

Thermal insulation

The article mentioned the material Teploizol and now we will dwell on its description in more detail. It is comparative the new kind insulating material... It is made from polyethylene foam. It is hidden between two layers of foil. It can withstand high temperatures and is suitable for insulation chimneys... Manufacturers produce Thermal insulation thickness from 2 to 10 mm... The thicker the insulation, the higher temperatures it can withstand:

2-5 mm - withstands temperatures from -30 o C to +100 o C;
5-10 mm - permissible operating temperature from -60 o C to +150 o C.

The upper foil layer protects the pipe from strong heating. The material is easy to work with. It is easy to work with him independently. The pipe is wrapped with Thermal Insulation using wire or metallized tape.

Folgoizol

Folgoizol is also an excellent choice for insulating chimney pipes. It consists of a two-layer foil and a heat insulator. Due to the reflective properties of the foil, the material can keep up to 90% heat in the bath... It ranks first in the list of similar materials. For its manufacture, thick food foil is used. In addition to excellent insulating properties, it has other effective properties, for example, it is not afraid of UV and high temperatures. Folgoizol withstands temperature regime from -65 o C to +175 o C.

Folgoizol is harmless to health, since food foil is used for its production. Often it is used not only to insulate chimneys, it is also used to cover the walls and ceiling of a bath. It is considered an ideal insulation, hydro and vapor barrier for saunas and baths.

Sandwich pipes

Sandwich pipes can be a good solution for insulating a metal chimney. Manufacturers assure that such insulation will be reliable and safe. By installing this design you don't have to think about isolation... It will consist of several sections that can be easily and quickly assembled into a single whole. With your own hands, you can quickly assemble the entire structure and install it. It is suitable for a metal pipe in a bath or sauna with an iron stove.

By their construction, sandwich pipes resemble a pie of several layers. Inside there is a layer of stainless steel, followed by a layer of mineral wool or basalt insulation. The outside of the pipe is covered with a layer of galvanized steel. This design is modern method built-in chimney insulation ready-made. It will perform two important functions at once:

do not overheat outside;
do not accumulate soot.

Such constructions great for saunas, but for baths with a brick stove, you need to look for another option.

Insulation for a traditional Russian bath

The wooden roof structure can ignite on contact with the hot pipe. To avoid a fire in the bath, they isolate it. Most often, mineral wool, fixed with wire, is used for this purpose. From above, the pipe is plastered with clay-sand mortar and covered with a layer of galvanized roofing steel. Fix it with self-tapping screws and then perform installation. Insulation helps the roof and wooden floor receive protection against overheating and fire... If the pipe is properly insulated and sealed, moisture will not get into the attic.

It is recommended to insulate the outlet of the pipe in the area of the ceiling and roof with asbestos sheets. They have good protection against high temperatures. The walls at the inside of the pipe are covered with galvanized metal sheets. Conventional iron is not suitable for such work, since they are susceptible to corrosion. It is advisable to make a box around the pipe where it goes through the ceiling. Expanded clay is poured inside the box, which will serve as a good protection against fire for the wooden floor. Expanded clay will also contain heat. Experts recommend, in addition to insulating the chimney, also not to forget about the ceiling, walls and stove in the bath.

Recommended before starting work on the insulation of the chimney pipe made of metal, its outer part heat-resistant sealant... A special sealant can withstand temperatures up to +1000 o C. The applied agent will prevent insulating materials from sliding on the outer surface of the metal pipe.