Window ventilation is the simplest and fastest way to change the air in the room, regulate humidity and reduce the risk of mold. There are three ways to ventilate:

Folding opening (on the statue)

Ventilation by opening the windows is not recommended with today’s standards of thermal insulation, especially in winter and in humid rooms. The windows open onto the statue to let the natural air flow into the room. This method of ventilation is not recommended for a long period of time because the window cools down significantly and thus increases the risk of water condensation and the formation of mold on its edges.

Impact ventilation

The window wings open wide in a short period of time (4-10 minutes). This allows for quick air exchange and energy loss is reduced to a minimum.

Cross ventilation

Cross ventilation is the most efficient way to ventilate a room. Windows and doors open at the same time to create drafts, leading to a complete air exchange in 2-4 minutes.

Since 2009. year, DIN 1946-6 prescribes that new buildings must have a ventilation system. In renovation projects, the concept of ventilation must be made if in detached family houses and apartment buildings more than a third of all windows are replaced with new ones, or if a new cover is installed on more than one third of the new roof area. More information on ventilation standards can be found on our info page DIN 1946-6.

Detailed information on the relationship between mold and moisture can be found on the Humidity and Household info page.

Tips for proper ventilation can be downloaded as a PDF file here.