The aerator can be made of stainless steel, but today in most cases the material for such products is polypropylene. It is cheaper, and in addition, plastic can be given any color. At the same time, it is strong enough to withstand the weight of a person, so that installation or repair work on the roof can be carried out without difficulty.
The aerator has a replaceable element - a passage, the design of which is selected taking into account the type of roofing.
Aerators can be equipped with a roof passage device chinese thailand data to a specific type of roofing
The product can be equipped with a fan - it is necessary to create forced draft in roofs with a small slope (convection is weak in them due to the small difference in height) or with complex contours, where natural draft is not enough to overcome the aerodynamic resistance of the fractures.
To prevent precipitation and insects from getting in, the aerator opening is protected by a filter. The diameter of the aerators varies from 63 to 110 mm.
The task of calculating ventilation is to determine the necessary parameters at which the volume of incoming air will be sufficient for effective steam removal.
To allow outside air to enter the under-roof space, either a 20–25 mm wide gap along the entire length or a series of holes must be installed in the soffit that lines the eaves overhang. The diameter of the holes depends on the roof slope:
up to 15o — 25 mm;
over 15o — 10 mm.