Knots of ventilation passage through the roof: varieties and installation

For the proper functioning of the roof, the quality of execution of all the nodes is of great importance. Some of them may seem less important to the home master. In the roof there may be minor structures, but if the site is related to walls or abutments or comes to the surface, then it plays a very important role.

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

Types of ventilation passage nodes

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

• Design without condensate and valve ring;
• System with an actuator;
• The design of manual control;
• Systems with a ring for condensate or without it;
• System with a valve in intrinsically safe design;
• Design with a warmed valve and manual control.

In addition to these options, non-standard designs can sometimes be used. If you do not need to switch repeatedly, you can use a manual drive that provides a stable mode of operation.

Features of installation: materials used

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 dimensions and shape of the nodes will depend on the roof and the type of ventilation system, whereas in form they are:

• Square;
• Rectangular;
• Round;
• Oval.

Marking of knots

If you have a ventilation passage assembly through the roof of UP1, this indicates that the design is devoid of a ring and a valve. The digital designation indicates the presence of a valve, which can operate on manual control. In this case, the structure is devoid of a condensate ring. If the manufacturer has indicated the marking UP3, then it says that the system has a platform for the actuators and the valve.

Installation work

The nodes of the ventilation passage through the roof are selected depending on the type of roof. The design is strengthened on the glasses with the help of anchor bolts. Nuts with which glasses are supplied are applied also. The mineral wool is used as a warming layer, it must be covered with fiberglass outside.

The described system is protected by a manual or automatic control valve. A drift must have one specific feature, which is expressed in the presence of a branch pipe. It should have an end lower flange, used to fix the air ducts and valves. There is also an upper flange in the system, with it a shaft of circular cross section is fixed. For the installation of braces, clamps and brackets are used.

The nodes of the ventilation passage through the roof must necessarily have a skirt, which serves as an additional waterproofing. If water or water is released from a gas or air mixture, a condensate collector is required, which is attached to the nozzle. Valves can be controlled mechanically - this capability is provided by the actuator, which responds to the "open" and "close" commands. In order to ensure the safety of the actuator, do not place it close to the condensate collector or the ring collar.

Installation Recommendations

The unit for the passage of ventilation through the roof, the photo of which is presented in the article, must necessarily be mounted before the roof is made ready. Such structures are installed on the ventilation system, and then the roof is installed. Then work on the sealing will be required. The composition should be applied also to the joints on the roofing. These manipulations will guarantee waterproofing and heat preservation.

Additional sealing measures

The nodes of the ventilation passage through the roof of the metal-tile must be additionally sealed. For this purpose, the coating and the pipe itself are cleaned. Next, foil paper can be glued to cover the adjacent part of the coating and the lower part of the tube. At the final stage, the holes are filled with a sealant. In addition, this will increase the life of the system.

Specialist's recommendation

Elements of knots that are used for passage through the roof can be manufactured abroad or in Russia. The goods of the domestic manufacturer win in quality, after all they are adapted to severe climatic conditions.

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

Elements are designed for mounting steel shafts on them in natural or mechanical ventilation systems. The nodes of the passage 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, eliminating the occurrence of sparks during operation. You also can be purchased and other nodes of the ventilation passage through the roof: the series 5.904-11, for example, has a warmed valve and can have a ring for collecting condensate. It should be remembered that in the performance of UE3 the unit does not have an electric drive - in this case mechanical control is provided.

Node of passage through the roof of the corrugated board

The nodes of the ventilation passage through the roof from the profiled sheet can be made with the help of additional elements. They ensure the reliability of the roof, junctions, ends, sealed pipe exits. For work on the corrugated board an apron is placed around the pipe. It can be made of metal parts, called planks of abutment. On all sides they need to be wound under the profiled sheeting by 200 mm.

In the area where the connection with the apron is made, the covering material is sealed with a roofing sealant. It is important in this case to properly perform also 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-section. Excess part of the material is cut out, but it is necessary to leave a stock up to 100 mm near the pipe walls. At the next stage, the membrane can be attached to the walls of the chimney.

Nuances of deducing the ventilation system through the roof of the corrugated board

Before removing the pipe, it is necessary to choose the method of waterproofing the junctions. To do this, the upper and lower strips are most often used, but in this case moisture can get between the corrugated board and the pipe, penetrating the waterproofing membrane. A more reliable way, according to the professionals, will be bypassing the pipe with an apron made of roll waterproofing material.

Conclusion

The passage unit through the roofing 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 the glass of reinforced concrete, then mechanically fastened. The main purpose of such units is transportation of air streams, which do not differ in chemical activity. The moisture level of these flows does not exceed 60%.