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Preventing mould in homes
condensation in living areas: until recently, this problem was virtually unknown.
Before the first oil crisis and the following energy conservation laws in the
late 1970's, people were literally throwing energy out of the window. Old windows
barely stopped air currents. Frames warped with time, creating leaks. With
the installation of new windows, however, heat loss was brought to an end and
it was finally possible to save energy.
But suddenly there was a new problem: humidity! This made itself apparent with such well-known symptoms as water condensation on the window panes, mould, dry rot and a worsening of the air quality in the room.
Why rooms should be aired
The purpose of room ventilation is to exchange the moist inside air with the drier outside air. But reducing the humidity is not the only task that modern ventilation systems need to fulfil, since a continuous and sufficient supply of fresh air is important for the inhabitants as well. Thus, the following criteria need to be met.
- The room humidity needs to be controlled
- The stale air needs to be replaced
- Bad smells and fumes need to be removed
- Rooms with open flame need more oxygen
The simplest and most effective way to air out a room is to open the window. There are three methods that are used:
During the fissure airing, the window is slightly opened. By standard tilt/turn windows this means that the sash is tilted into the room. Fissure ventilation swaps only small amounts of air and requires long periods of time to be effective. Because the window is open for so long, the entire sash cools to the outside temperature, thus increasing the risk of condensation.
A much more efficient way to exchange air in a room. The window sash is fully opened and the air in the room is completely exchanged in 4 to 10 minutes. With this method, energy loss is kept to a minimum and the surfaces are not cooled.
fastest method. In 2 to 4 minutes, the air in the room is fully replaced.
All the windows and doors are opened so that a cross draft is created.
To make it even easier to air out a room, GEALAN has created some solutions for you: