There are two possible passages of a brick chimney.

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In the first variant, the passage unit is mounted by increasing the thickness of the masonry, the so-called “flashing”. The second variant of the passage of a brick pipe through the attic floor without laying out a “flashing” is carried out in almost the same way as a metal pipe. In this case, the chimney has one size in cross-section along its entire height, without increasing the thickness of the walls.


The opening in the ceiling is secured with a stainless steel sheet or a minierite plate. A window is cut out in the center of the sheet, through which the chimney will pass. The length and width of this opening should exceed the similar parameters of the pipe by literally 3-5 mm. When laying the chimney, approximately three to four rows before the ceiling, a sheet with a prepared opening is put on it, and then the laying is continued up to the height of the finished attic floor. Wooden floors are laid with mineral wool to reduce heat transfer from the pipe. But a more reliable method would be a stainless steel box, into which a brick chimney will pass, the distance from the pipe to the walls is also laid with mineral or kaolin wool by 5-7 cm.

Sealing of joints

This stage is considered the most difficult when removing through the roof. For this, a lower apron made of tin is installed.

A metal "tie" is placed underneath it, the purpose of which is to drain liquid into the drain. Outside, you can install a decorative apron, the purpose of which is to create an aesthetic appearance.

When using a flexible coating, the task of uganda mobile database is significantly simplified. It is quite easy to bend such material onto a pipe, previously coated with impregnation, to create a better fit. It is also recommended to treat the joints of the wall and roof with a sealant.

Video tip – the node of the chimney pipe passage through a wooden floor


From the following video you can learn how to lay the structure correctly without wasting extra effort.

Installation in two-story buildings

If you are installing polyurethane foam in a two-story building, you will also have to deal with the arrangement of the upper tier. There is a certain set of rules for this:

At a distance of 1 m after exiting the floor of the upper floor, it is necessary to switch to a single-wall structure in order to obtain high-quality heating of the room. Before exiting to the attic, a sandwich pipe is used again.
The passage through the ceiling for the chimney pipe on the second floor is made according to the same scheme as the previous one.
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