Ventilation passage nodes through the roof: varieties and installation

For the proper functioning of the roof, the quality of execution of all nodes is of great importance. Some of them may not seem so significant to the home master. There may be minor structures in the roof, but if the node is related to walls or abutment or comes to the surface, then it plays a very important role.

Many industrial and domestic buildings today have ventilation systems. When installing them, it is required to equip the passage through the roof. These elements have the form of metal structures, which are represented by holes in the ceiling. The main purpose of such units is to transport and inactivate chemical air at a temperature that does not exceed 80 °C.

Varieties of ventilation passage nodes

The nodes of the passage of ventilation through the roof are divided into several varieties. These designs can have several versions, namely:

• design without condensate ring and valve;
• system with an actuator;
• manual control design;
• systems with or without a condensate ring;
• system with a spark-proof valve;
• design with insulated valve and manual control.

In addition to the options listed, non-standard designs can sometimes be used. If multiple switching is not required, then a manual drive can be used, which provides a stable operating mode.

Mounting features: materials used

The nodes of the passage of ventilation through the roof can be made of black steel, the thickness of which varies from 1.5 to 2 mm. Stainless steel with a sheet thickness of 0.8 mm and 0.5 mm can be used. The size and shape of the nodes will depend on the roof and the type of ventilation system, while in shape they are:

• square;
• rectangular;
• round;
• oval.

Node marking

If you have a node for the passage of ventilation through the roof of UP1, then this indicates that the design is devoid of a ring and a valve. The numerical designation indicates the presence of a valve that can be operated manually. In this case, the design is devoid of a condensate ring. If the manufacturer indicated the marking UP3, then it indicates that the system has a platform for actuators and a valve.

Carrying out installation work

The nodes of the passage of ventilation through the roof are selected depending on the type of roof. The structure is fixed on the glasses with the help of anchor embedded bolts. Nuts are also used, which are equipped with the glasses themselves. Mineral wool is used as an insulating layer; it must be covered with fiberglass on the outside.

The described system is protected by a manual or automatic control valve. The drift must have one specific feature, which is expressed in the presence of a branch pipe. It must have a bottom end flange used to fix ducts and valves. There is also an upper flange in the system, with the help of which a circular section shaft is fixed. Clamps and brackets are used to install the braces.

The nodes of the passage of ventilation through the roof must necessarily have a skirt, which performs the function of an additional waterproofing. If water is released from the gas or air mixture, then a condensate collector will be required, which is attached to the nozzle. Valves can be controlled mechanically - this possibility is provided by an actuator that responds to the "open" and "close" commands. In order to ensure safety, it should not be placed close to the condensate trap or ring sleeve.

The photo of which is presented in the article must necessarily be mounted even before the arrangement of the roof. Such structures are installed on the ventilation system, and then carried out. Then sealing work will be required. The composition must also be applied to the joints on the roofing. These manipulations will guarantee waterproofing and heat preservation.

Additional sealing measures

The nodes of the passage of ventilation through the roof of metal tiles must be additionally sealed. To do this, the coating adjacent to the pipe and the pipe itself are cleaned. Next, foil paper can be glued so that it covers the adjacent part of the coating and the bottom of the pipe. At the final stage, the holes are filled with sealant. Additionally, this will increase the life of the system.

Elements of nodes that are used to pass through the roof can be manufactured abroad or in Russia. Products of a domestic manufacturer win in quality, because they are adapted to harsh climatic conditions.

As an example, we can consider the node of the passage of ventilation through the roof "Lissant". These designs are reliable, affordable and have a variety of options.

Elements are intended for mounting steel shafts on them in natural or mechanical ventilation systems. The passage units are explosion-proof and manufactured in accordance with TU 4863-055-15185548-2012. When compared with the general design, it can be noted that the structures are made of brass elements, which exclude the occurrence of sparks during operation. You can also purchase other ventilation passage units through the roof: series 5.904-11, for example, has an insulated valve and may have a condensate collection ring. It should be remembered that in the UP3 version, the unit does not have an electric drive - in this case, mechanical control is provided.

Knot of passage through the roof of corrugated board

The nodes of the passage of ventilation through the roof of the profiled sheet can be carried out with the help of They ensure the reliability of the roof, adjoining, valleys, sealed pipe outlets. To carry out work on the corrugated board, an apron is installed, located around the pipe. It can be made from metal parts, called From all sides, they need to be brought under the corrugated board by 200 mm.

In the area where the connection with the apron is made, the covering material is sealed with roofing sealant. It is also important to correctly perform the roof waterproofing around the pipe. To do this, you can use a special membrane, in the place where the pipe passes, a cross-shaped incision should be made in it. The excess part of the material is cut out, but a margin of up to 100 mm should be left near the pipe walls. In the next step, the membrane can be attached to the walls of the chimney.

The nuances of removing the ventilation system through the roof of corrugated board

Before removing the pipe, it is necessary to choose a method for waterproofing the junctions. For this, the upper and lower strips are most often used, however, in this case, moisture can get between the corrugated board and the pipe, penetrating into the waterproofing membrane. A more reliable way, according to professionals, will be to bypass the pipe with an apron made of rolled waterproofing material.

Conclusion

The node of the passage through the roof structure is a metal system that is used in the arrangement of ventilation shafts. If the system has a general purpose, then it is located on reinforced concrete cups, then it is mechanically fastened. The main purpose of such nodes is the transportation of air flows that do not differ in chemical activity. The humidity level of these streams does not exceed 60%.