Insulation of ventilation systems

Ventilation is an important system, providing hygienic and favorable conditions for human health.

How does the ventilation system? Let us consider in more detail!

The ventilation system is a set of technological devices and mechanisms for collection, removal, move and clean the air. It is an integral part of the integrated communication building. Thanks to the work of the ventilation system in the room supported a comfortable life and work environment (constant, comfortable temperature, optimal humidity, speed and purity of air masses).

The ventilation calculation is performed using the following parameters:

  • The primary air capacity (m3/h)
  • Working pressure (PA)
  • The air flow rate in duct (m/s)
  • Allowable noise level (dB)
  • Power of heater (kW)


Any ventilation system is based on the principles of natural and forced air circulation.

The basic principle of operation of the system is the natural pull. The air moves in the building due to the difference in temperature and pressure of air masses.

Natural ventilation works on the following principle - waste heated air flow always tend upwards, and cold air masses occupy a space closer to the floor and always seek to displace the warm. For the effective functioning of the ventilation system will be sufficient to set the channel for incoming air closer to the floor in the room and the outlet for the spent air near the ceiling.

This is the main task of ventilation is to create a continuous loop of circulating air supply and exhaust air mass - balanced!

Mechanical ventilation works in the following principle - supply fan pushes air from the external environment, then the air passes through the filter and heater (where it is subsequent purification and heating), then the air duct system is served in the room and then the fan shall exhaust air to the external environment.

Forced ventilation is used to solve more complicated problems of cleaning the air. This form of ventilation has been widely used in private homes, offices, cafes, restaurants, shops, at work, where not handle natural ventilation.

But all these processes to bring to life, the ventilation system needs to be insulated. For what need insulation for ventilation?
Here are 4 main reasons:

  • To protect the ducts from condensation in the vent. In unheated rooms and outside in contact of cold and warm air on the metal ducts very quickly cause condensation, which further leads to corrosion. In winter the condensate immediately turns into ice or frost, ice covers the cross-section of ventilation ducts and reducing efficiency of the whole system.
  • To avoid heat losses. The air that gets into the house in winter must be heated by appropriate heating elements. Insulation can prevent the cooling air between the point of heating to the conclusion from the premises.
  • Insulation. If the flats are the movement of air through the pipes is not so audible, in private homes, manufacturing and other large objects - still quite audible. Partially a sound wave is extinguished by its own natural decay, but in order to fully suppress the vibration and the sound waves it is necessary to resort to sound insulation of ventilation equipment.
  • Fire protection of ventilation ducts. Even if the ducts are made of steel or aluminum, it still does not meet fire protection requirements. Sheet metal in the event of fire in the room heats up quickly, this in consequence leads to local destruction and depressurization, so that the heat spreads quickly.

What materials are most efficiently applied for such problems on ventilation? We definitely can help You to understand this!

All materials used for the insulation of ventilation systems shall comply with all construction norms and rules (SNiP), sanitary standards and regulations (sanitary standards) and fire safety requirements.

Today, the most popular are the following:

Insulation made of foam rubber found a great use for ventilation systems. Rubber insulation protects the duct from condensation, protects against heat loss, effectively used as shumoizolyatory. It is very often used sheet rubber insulation (available self-adhesive, no sticky layer, with an aluminum coating and without it). Thanks to its flexibility, this type of insulation used in the installation in tight spaces and air ducts of large diameters. Insulation works at a temperature range of -200.. 105ºC.

Protective coatings, such as SILVER GUARD (works at a temperature range of -60.. 100ºC) and foil with an adhesive layer (works at a temperature range of -40.. 130 ° C) are used to protect ventilation systems against mechanical damage both outside and inside. The material has good resistance to UV radiation.


Insulation made of basalt materials have found wide application for air ducts of circular and square cross-sections. Mineral wool is used as heat and fire insulation, but also has a high rate vibration and sound attenuation. All materials of basalt fibers operate at rather high temperatures (cylinders with -200.. 250ºC, Mat lamellar to 250ºC, Mat stitched to 750ºC).

The company SANPREIS known in the market of thermal insulation materials for about 10 years. All materials of our company are certified, sufficient is always at our warehouse and are ready to come to You on the subject!

If you need isolation today – call us! Here's my number:

(067) 504-38-12

Tatiana Pavlovskaya