Roof ventilation is used in spacious and high rooms, where the roof zone (ceiling) is mounted with the expectation of opening structural elements — for intense heat removal through these zones along with the outgoing air. This method seems especially effective in cases where, due to certain production conditions, very warm air is continuously formed in the premises/buildings. Most often, this takes place in the so -called hot workshops — welding, foundry, as well as in stables and stalls. However, this principle is quite applicable for ventilation of large rooms with a high density of people who are there (like sports halls) or as a fire -fighting measure (drainage of smoke gases). The principle of ventilation of this type is very simple. Warm air due to its very low density rushes up and through certain holes in the roof is excreted out. Passes for supply air in the outer wall provide passing currents of fresh air.
