For the proper functioning of the roof, the quality of performance of all nodes is of great importance. Some of them may not seem so significant to the home master. Secondary structures may be present in the roof, but if the node refers to the walls or adjoining 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 node of the passage through the roof. These elements are in the form of metal structures, which are represented by holes in the ceiling. The main purpose of such nodes is to transport and inactivity of 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 options, namely:
- design without ring for condensate and valve;
- system with an actuator;
- manual control design;
- systems with or without condensate ring;
- intrinsically safe valve system;
- design with insulated valve and manual control.
In addition to the options listed, custom designs can sometimes be used. If multiple switching is not required, then you can use a manual drive that provides a stable mode of operation.
Mounting Features: Materials Used
The nodes of the ventilation passage 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 in front of you there is a ventilation passage through the UP1 roof , this indicates that the design is devoid of a ring and a valve. The digital designation indicates the presence of a valve that can operate on manual control. In this case, the design is devoid of a condensate ring. If the manufacturer indicated the UP3 marking, then it indicates that the system has a platform for actuators and a valve.
Installation work
The nodes of the ventilation passage through the roof are selected depending on the type of roof. The design is mounted on the cups using anchor bolts. The nuts that the glasses themselves are equipped with are also used. Mineral wool is used as the insulation layer, it must be covered with fiberglass from the outside.
The described system is protected by a manual or automatic valve for control. The penetrator must have one specific feature, which is expressed in the presence of a nozzle. It should have an end lower flange used to fix ducts and valves. There is also an upper flange in the system, with the help of which a circular shaft is fixed. To install braces, clamps and brackets are used.
The nodes of the passage of ventilation through the roof must have a skirt, which serves as an additional waterproofing. If water is released from the gas or air mixture, the use of a condensate collector is required, which is attached to the nozzle. Valves can be controlled mechanically - this feature is provided by an actuator that responds to the "open" and "close" commands. In order to ensure the safety of the actuator, do not place it close to the condensate trap or ring coupling.
Installation Recommendations
The node of the passage of ventilation through the roof, the photo of which is presented in the article, must be mounted before the arrangement of the roof. Such structures are installed on the ventilation system, and then carry out the installation of the roof. Then, sealing work will be required. The composition should 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 the metal tile must be additionally sealed. To do this, the coating adjacent to the pipe and the pipe itself are cleaned. You can then glue foil paper so that it covers the adjacent part of the coating and the lower part of the pipe. At the final stage, the holes are filled with sealant. Additionally, this will increase the life of the system.
Specialist recommendation
Elements of nodes that are used to pass through the roof can be made abroad or in Russia. Domestic products 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 wide variety of designs.
Elements are designed for mounting on them steel mines in natural or mechanical ventilation systems. Passage nodes are explosion-proof and are made in accordance with TU 4863-055-15185548-2012. When comparing with the general design, it can be noted that the structures are made of brass elements, eliminating the occurrence of sparks during operation. You can also purchase other units of the passage of ventilation through the roof: the 5.904-11 series, for example, has an insulated valve and may have a ring for collecting condensate. It should be remembered that in the UP3 version the assembly does not have an electric drive - in this case, mechanical control is provided.
The site of passage through the roof from corrugated board
The nodes of the passage of ventilation through the roof from the profiled sheet can be carried out using additional
elements. They provide the reliability of the roof, joints, valleys, sealed pipe outlets. To carry out work, an apron is installed on the corrugated board, located around the pipe. It can be made from metal parts called
abutment strips. From all sides they need to be placed under the corrugated board at 200 mm.
In the area where the connection with the apron is made, the covering material is sealed with roofing sealant. It is important at the same time to correctly carry out roofing waterproofing around the pipe. To do this, you can use a special membrane, in the place of passage of the pipe in it should make a cross-shaped incision. 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 from corrugated board
Before carrying out the removal of the pipe, it is necessary to choose a method of 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 the waterproofing membrane. A more reliable way, according to professionals, will be bypassing the pipe with an apron made of rolled waterproofing material.
Conclusion
The node of the passage through the roof structure is a metal system, which is used in the arrangement of ventilation shafts. If the system has a general purpose, then it is located on glasses made of reinforced concrete, then fastening is carried out mechanically. The main purpose of such nodes is the transportation of air currents that do not differ in chemical activity. The moisture level of these streams does not exceed 60%.