Constructing Architect

Ventilation – domestic buildings

Each habitable room as well as the dwelling as a whole must have a fresh air supply of no less than 0.35 l/s/m2.

Indoor air must be removed by extractors from kitchens, bathrooms, lavatories, utility rooms etc.

In dwellings in multi-storey buildings, a minimum flow of 20 l/s must be extracted from kitchens, and a minimum flow of 15 l/s from bathrooms and lavatories.

Ventilation – domestic buildings

An extractor hood with mechanical extraction must be installed above the cooker in all dwellings in blocks of flats and single-family houses.

Fresh air must be supplied to the habitable rooms either through fresh air vents, automatically controlled windows or by mechanical, forced air supply.

Ventilation – domestic buildings

The functional requirements for

ventilation of rooms of a normal height are satisfied when the rooms are ventilated as follows:

BR08 - Ventilation cap. 6.3.1.2 Domestic buildings

BR08 – Ventilation cap. 6.3.1.2 Domestic buildings

BR08 – Ventilation cap. 6.3.1.2 Domestic buildings

BR08 – Ventilation cap. 6.3.1.2 Domestic buildings

BR08 – Ventilation cap. 6.3.1.2 Domestic buildings

BR08 – Ventilation cap. 6.3.1.2 Domestic buildings

Area of fresh air vent in habitable rooms• At least 60 cm2 for up to 25 m2

floor area with natural ventilation

• At least 30 cm2 for up to 25 m2 floor area for mechanical extraction.

In room larger than 25 m2, the requirement is deemed to have been met if the opening area:

In the case of natural ventilation is augmented by 2,4 cm2 pr m2 floor area in excess of 25 m2

Area of fresh air vent in habitable rooms

Example :

Living room 40 cm2

40 x 2,4 = 96 cm2 opening

Or

60 cm2 + (40-25) x 2,4 cm2

= 96 cm2 opening

Example of a single family house

Example of a single family house

Example of a single family house

Example of a single family house

Example of a single family house

Example of a single family house

Example of a single family house

Example of a single family house

Example of a single family house

Example of a single family house

Example of a single family house

42 x 2,4 = 101 cm2 opening as a minimum

Example of a single family house