How to organize the passage of the pipe through the roof

The passage of the chimney pipe through the roof is a rather complicated element, with the device where homemade craftsmen often have some problems. The fact is that the passage should not violate all the protective properties of the "pie of the roof", but it must comply with fire safety standards. Next we look at how to organize such a structure in detail.

General information

Most often, the chimney device is planned at the design stage of the house, but sometimes it becomes necessary to bring the smoke removal system through the attic floor and roof of an already constructed building, for example, in the following cases:

• With the reconstruction or overhaul of the roof;
• When changing the source of heating.

Performing the knot of the passage of the pipe through the roof, beginners should find out:

• Where better to place the passage.
• How to equip the passage of the pipe through the ceiling and roof to ensure safe and reliable thermal and waterproofing.

The solution of each of these tasks must be approached correctly, since it will depend on it:

• The performance of the chimney;
• Fire safety;
• Tightness of the roof.

Therefore, let us review the process of installing this system in more detail.

The choice of the location of the chimney

According to experts, the best option for the location of the pipe is its installation near the ridge of the roof.

This solution has the following advantages:

• Allows you to minimize the accumulation of snow near the chimney, and also prevents the occurrence of snow pockets near the ridge, which eliminates the leakage of the roof.
• With this arrangement, a low chimney height is obtained, thereby reducing the environmental impact on the structure, respectively, reducing the likelihood of condensation.

Note! The lower the chimney is located on the slope, the more, according to building codes, its height above the roof should be. If the house is adjacent to the wall of a high-rise building, then the pipe should be above the roof of a high-rise building. If the roof is flat, then the height must be at least 500 mm.

It should also be borne in mind that the passage through the roof of the chimney should not be located in the following places:

Note! The flue must not be rigidly connected to the roof, as in case of violation of the integrity of the roof there is a probability of destruction of the system.

How to bring the chimney out

Through the roof

To protect the roof insulation from moisture, it is known that hydro- vapor barrier material is used. However, in accordance with existing fire safety standards, it is necessary to maintain a certain distance (13-25 cm) from the chimney to combustible materials. Most often, to solve this problem, use special boxes, inside which is located the chimney.

Mineral wool as a heat insulator is laid between the duct and the pipe. At the same time, the hydro- vapor-insulating film of the roof is brought onto the box and fixed with nails or staples.

Above it is installed a special design with aprons, which is usually made of stainless steel, copper or galvanized. The apron must be designed for the angle of the slope of the roof for which it is intended.

Note! Chimney should be placed vertically. It is allowed to deviate from the vertical no more than 30 degrees.

I must say that the design of the passage depends largely on a number of factors:

• Material - the pipe can be made of brick, metal, asbestos cement and some other materials.. For each of them, the design has its own characteristics.
• The temperature of the combustion of fuel - heating can be wood, coal, peat, etc.. The type of fuel depends on the temperature to which the chimney is heated.
• Exterior finish - the design may be, for example, lined with brick or plastered, the design of the junction may be completely different..
• Type of roofing material - on the market there are ready-made additional elements designed for round and square section of the pipe and different types of roofing. The price of additional elements is usually not high, so it makes no sense to carry out the parts yourself, unless the chimney does not have any non-standard section shape.

For example, the passage of a pipe through a metal tile is as follows:

• Smooth metal sheets are placed close to the pipe. Their size should be such that they overlap the chimney box.
• Next to the chimney is mounted metal profile corner.
• Then the joints are sealed with roof sealant.

Note! It is believed that the passage of the sandwich pipe through the roof can be performed without a box, since it consists of two walls, between which there is heat insulating material. However, this opinion is erroneous - the box is necessary in any case.

The same instruction and for sealing joints for roofing with ceramic tiles, the only thing, instead of steel sheets use a soft aluminum or lead tape. An end carpet can be used as an apron for soft tile. For waterproofing the chimney passing through ondulin, use a special insulating tape "onduflesh."

Pass through the ceiling or ceiling

Passage through the ceiling or other ceiling is performed on the same principle as through the roof. In this case, the pass box can be made from minerite.

As for the inner space of the box, it also needs to be filled with mineral wool or expanded clay. In addition, as a filler pipe, you can use sand - this option is the cheapest.

If a pipe passes through the ceiling of a bath, then a non-combustible heat-insulating material is also laid for reinsurance between the pipe and combustible materials (most often wooden structures). Experts recommend not to neglect such a measure, since the costs do not increase much, but in terms of safety, such a gasket can play a decisive role.

I must say that in the bath chimney is often taken out of the steam room through the wall to the waiting room, and from there through the attic to the street. To organize a similar passage of the pipe through the wall, it is also necessary to use a feedthrough that is filled with mineral wool, only this should not be glass wool, but basalt wool that can withstand temperatures up to 1000 degrees.

Tip! When assembling sections of the chimney with your own hands, you can use special sealants for sealing. The only thing you need to pay attention to them to withstand temperatures of at least 1000 degrees.

Here, perhaps, all the main nuances of the device passes smoke exhaust systems in floors and roof.

Conclusion

The passage of the chimney through the ceiling and the roof is a crucial element of the design, which depends not only the tightness of the joints, but also the fire safety of the building. Therefore, when constructing smoke exhaust systems, this node should be given special attention.

It is not difficult to carry out such a construction, the main thing is to strictly observe fire safety requirements and building codes. From the video in this article, you can get more information on this topic.