The node pass ventilation through the roof. Device duct

Usually a ventilation system provides for the development of the project of distributing channels on the inside. Special attention is paid to materials and forms that must be completed mine. However, another important factor in the region of the exit of exhaust air flows. As a rule, for this purpose, formed a special node pass ventilation through the roof, which blends into the structural composition of the roof. When designing the parameters and General technical devices, this experts take into account the characteristics of the duct, and features of roofing.

What is a roofing ventilation node?

This can be a design, an entire group of elements, though there are hardly monolithic installer that performs the function of removal of contaminated air. Externally, this element looks like a chimney, only in a more compact size. In any case, the basic design is a metal pipe running through the roof and fixed in a special glass made of reinforced concrete. Depending on which ventilation channels are still a host of roofing output, its size can be from 1 to several millimeters. The same applies to protective coatings. Usually used galvanized steel, or stainless steel, able to cope with the physical wind loads and moisture.

Technical parameters host

The Most common material for the manufacture of such elements of the duct is considered to be black steel, whose thickness reaches 1.2 mm. However, to equip a small private house can be found and less rigid sheets whose thickness is less than about 1 mm. is Much more important to pay attention to the form, which made the node for the passage of ventilation through the roof. Rectangle is considered to be traditional, but it is most inconvenient to install. The optimal solution can be round-off which is available in different sizes with a diameter in the range of 10-125 cm, But this nuance depends on the design of the main shaft. The length is selected depending on the specific operating conditions and parameters of the roof. On average, this value is 1 m, although, of course, you can meet and long options.

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Part of

Traditional device this element of the ventilation system represents a difficult complex of several components. This list includes functional parts of the roof, and fasteners of the node, and sets with locking devices. Standard node pass ventilation through the roof is a metal channel with elements of regulation of air flow. This is complemented by the design of insulation and waterproofing materials in places of mines for the level of the roof. This area is usually mineral wool, vapour barrier layer, surfaced hermetic compositions, as well as fit the outer protective coating.

In the middle and upper parts more attention is paid to the fixing elements. The basic hardware is the screw, although can be used and other details – depending on the type of roofing. For example, if the node pass ventilation through the roof is mounted on a soft and brittle material in the form of tiles, it is better to bet on the clips from the elastic crimping clamps.

Control the vent nodes

Method and the possibility of control mechanisms of the aisle do not depend on mounting solutions, as determined by the basic configuration of the node. Therefore it is necessary to foresee the possibility of regulation of this system. In particular, the end of the ventilation shaft may be equipped with controllable valves. For the regulation of this component uses a special mechanism. The standard set of commands it involves the installation of closed and open positions. In modern versions of node pass ventilation through the roof also provides for the intermediate modes of the valve elements of automaticity. In fact, similar systems are Autonomous ventilation valves, which are not integrated in the roof cover, and the output of the air flow through the walls.

Compatibility aisles with roofs

A Lot in choosing the specific fan unit is dependent on the place in which it will be installed. Accordingly, take into account the parameters and materials of the roof. As the duct is a fairly massive power design, should initially assess the bearing capacity of the attic or attic. Nowadays, almost all types of roofs provide the possibility of equipping the roof with multilayered insulators, so the problems with stamina same of rafters occurs. More important is the angle of the slope, the thickness of the slab and parameters of the roof space. If you plan to install the concrete overlay, it is desirable at the point of installation of excavation to lay a special panel with holes designed for fastening pipes. The angle of the roof, in turn, may affect the configuration of the locationof insulation materials and fasteners duct.

Accessories for roof ventilation passage

Do Not have to initially pick the device in all possible functional extensions, but before the actual installation is to calculate the design so that the future equipment of the roof of the new options. In particular, the system can be supplemented with valves and baffles, which ensure the output air flow from the attic and attic space. If the end of the mine is in close contact with other communication systems, it is useful to include in the device and the special seals which ensure the sealing of the outputs of engineering communications. Thus, to protect not only the ventilation channels and roof penetrations. Separately it is necessary to consider and protect the surface from possible effects of gases and warm air.

Unit a

In the first place is mounted a reinforced concrete Foundation, which should be inserted in the bearing pipe. With the aim of improving the reliability of this design can be strengthened mounting flanges or supports. If you are installing the node for the passage of ventilation through the roof of corrugated, metal elements of the coating it is possible to use as fixing components. This capability depends on how securely the elements of the flooring. The thicker the sheet, the more reliable the connection. But abuse of such solutions is not necessary, because the mutual load on different designs in some cases can be dangerous.

In the usual way the passage is attached with braces which are brackets or clamps on the roof. However, if there is a node pass through the ventilation roof of metal, then count on serious support of flooring is not recommended. In a pinch you can use a mount with a larger scope. For example, the mounting skirt, which is laid on the roof in the place of its contact with the vent passage, will provide protection to the installation site and from mechanical deformation, and penetration of excessive moisture.

How much is a site of passage?

Although this component can be attributed to additional parts in the ventilation complex, it is not cheap compared to other elements. However, much depends on what equipment is acquired, the node pass ventilation through the roof. The price of the standard pass, control systems and insulation can be 1,8-2 thousand rubles. In the advanced equipment with automated valve protective coatings and ring for condensate this system can do 2.5-3 thousand.

Conclusion

Not all roofs have additions of this type. This does not mean that the users of the houses refuse ventilation systems – only it is organized on a different principle. Indeed, in some cases, the use of roof openings for duct formation is not justified. For example, the types of roofs where the slope is steep, a bad combination with such systems. In such a situation it is better to arrange the exhaust of air through the window or the wall, doing corresponding communications. If we are talking about roofs with standard roofing coatings, which were placed on ramps with a small slope, it is possible to provide a building and site for the air passage.