The installation of ventilation networks in residential premises has its own characteristics. Thus, in apartments, air ducts are used for mechanical ventilation, providing constant air exchange, for laying duct air conditioning systems, for equipping the hood in the kitchen.
In cottages, in addition to the above functions, air ducts are used in gravity ventilation and are used to adjust air heating. The purpose of the systems determines the choice of the type of air ducts, as well as the material from which they are made.
Features of installation and use of plastic systems
Plastic air ducts are considered an ideal option for apartments in multi-story buildings. They do not rust, make virtually no noise, are lightweight, do not attract dust, and require cleaning less often than metal counterparts. You can install plastic ventilation or exhaust yourself: the material is easily cut to the desired size, and a wide range of connecting parts, fittings, and accessories is available to ensure the required configuration.
However, the installation of plastic air ducts has some special features:
- low level of fire resistance, requiring scrupulous adherence to fire safety regulations (that is why plastic systems are not used in production);
- the need to install a steel section in the area where the air duct exits to the outside;
- difficulty in installing ventilation ducts in cottages with vapor barriers.
Rules for installation of flexible/semi-rigid systems
Flexible and semi-rigid air ducts have many modifications; as a rule, these are metal spiral-wound or corrugated channels. Among the advantages of such systems are low weight, minimum connections even in rooms with complex layouts, excellent air permeability, fairly simple installation on hangers, clamps or tape.
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But when installing flexible and semi-rigid metal air ducts made of galvanized steel, a lot of nuances should be taken into account:
- the bending radius of the duct should be at least 2 air duct diameters, the sag should be no more than 5 mm per 1000 mm, and the distance between fasteners should be one and a half to three meters;
- when laying through walls, special adapters must be used;
- Fastening clamps must be selected precisely according to diameter to avoid pinching of air ducts;
- All joints without exception must be sealed with specialized adhesive tape;
- Flexible air ducts cannot be used in vertical risers that exceed two storeys in height, etc
.
Do you have questions about installing effective ventilation in an apartment, private house, cottage, mansion? Call the company “Air Duct Professionals“, and we will offer you not only consultations, but also high-quality air ducts, as well as practical assistance in their installation.
