Engineering communications in the house require appropriate infrastructure support. In particular, the chimney and ventilation system provide for the organization of the exit through the roof. Previously, this possibility was provided with the help of special openings, which, after installation, were suitably sealed with sealing means. Today, engineering equipment manufacturers offer more reliable solutions, including roof penetration, which is arranged directly in the roof structure.
What problems does roof penetration solve?
To determine the purpose of such additions to the roofing cake, it is worth referring to the function of the roof itself. It should protect the house from precipitation and other external influences, while maintaining optimal performance of heat, noise and waterproofing. The presence of holes and slots in the roof is not allowed, therefore, communications passing through the roof must be carefully sealed at the points of contact with the finishing material and the load-bearing structure. In turn, roofing penetration initially creates a minimum of free space that is not used for engineering purposes. At the same time, it contributes to the effectiveremoval of smoke and air, protecting the materials of the roof from thermal effects. Ventilation systems, by the way, often lead to the formation of condensate in places where air flows are removed. Special knots for such channels prevent drip formation processes, removing moisture to the outside.
Varieties of penetrations
There are several classifications of roof penetrations. First of all, it is worth focusing on a specific purpose. Manufacturers produce special models for organizing the passage of antennas, pipes, ventilation ducts and chimneys. The belonging of the node to a certain group determines both the design and the material of manufacture. So, not all types of penetrations can coexist with a stone chimney. Also, plastic devices are not combined with some types of metal pipes. Nodes also differ in shape. The most widespread are round and square sections, but in some cases only corner roofing can help, which has its drawbacks, but also advantages. Structures with such a section, for example, are advisable to use in cramped conditions or when laying a non-standard coating.
Methods of managing penetrations
All penetrations provide the ability to remove air through the roof. Thus, a channel is formed, which can also contribute to the passage of cold air into the attic. In the simplest models, this nuance is not taken into account in any way andnodes in a constant mode provide uncontrolled passage of air. A more advanced roof penetration also provides for the possibility of controlling the flow with a valve. Inexpensive entry-level systems provide for manual control of gate valves, but you can also find many automated models that can be controlled from a distance. Moreover, devices with intelligent control systems that control valves based on current weather conditions are becoming increasingly popular.
Universal penetration
Knots of this type are, in essence, insulating tubes that organically fit into the opening thanks to the silicone sheath. True, in such a configuration, additional protection around the passage should be provided. The main task that such penetrations perform is to mechanically protect the pipeline or chimney from damage. In addition to the external silicone coating, the assembly has a metal layer and thermal insulation. These are optimal roof penetrations for round pipes in ventilation systems, as they can be adjusted to any bend. More importantly, thanks to the stepped structure, such devices allow you to direct the channel in one direction or another as needed. Orientation of the pipe is also possible in traditional penetrations, but changing direction in such cases requires more effort.
Installation of penetrations
Installation technique largely depends on the particular tunneling option. But in most casesInstallation involves three steps. First of all, a base is laid on which the node will stand. It can be a concrete or metal glass that will support the foundation type structure. The second stage involves the direct passage of the communication pipe through the assembly, as well as the performance of crimping operations. The installation of the roof penetration is completed by mechanical fixation on the roof surface. To do this, use self-tapping screws, mounting angles, screws and nails. The specific fastening method depends on the finishing material of the roof.
Roof penetration accessories
Additional elements that increase the reliability, functionality and durability of the roof unit include crimping accessories, sealing and heat-insulating materials. For example, using a covering of silicone or polymer elastic fabrics, it is possible to provide an isolated area around the installation site of the structure. Thanks to this reinforcement, the roof penetration will last longer and will not allow moisture and debris to pass into the opening. In some cases, it is advisable to use elements of mechanical strengthening. Such decisions are used for the purpose of insurance in case of windy weather.
How to choose the right penetration?
Initially, you should focus on dimensional parameters. The larger the ventilation opening or chimney, the thicker the walls of the unit should be. In addition, the insulating qualities of the penetration are taken into account. For example, if plastic can provide tightness, then in terms of thermal insulation it willeffective only with additional reinforcement. On the other hand, metal penetration for roofing chimneys must necessarily have an anti-corrosion coating. Actually, due to the risk of developing negative rusting processes, experts do not recommend contacting such models at all.
Conclusion
Consideration of issues of additional equipment of the roof should be approached at the design stage of the roof. In the design itself, it is possible to provide technical conditions for passing the communication channel and for installing the node. For example, a wide roof penetration for ventilation may require additional fastening in the rafter area. But this possibility is not always allowed in finished structures. Also, you should not save and refuse modern offers from manufacturers of penetrations. The same automated models will save you from a lot of trouble during the operation of the installation. For example, the latest versions of such nodes allow you to programmatically configure the valve control - so that it will automatically select operating modes depending on the season and temperature amplitudes. However, simple installations without valves should not be excluded if operation is planned in a warm region.
