When and where condensation forms depends on the humidity and temperature of a surface. In the colder autumn and winter months, condensation is increasingly noticeable on window surfaces. This can affect both the glass pane on the room side and the outside. While the former indicates a thermal bridge in the edge area, the fogging of the window outside is a sign of excellent thermal insulation of the glazing. There are ways and means to reduce unwanted condensation on glass surfaces. Fogged windows do not only disturb the appearance, the dripping condensation water can also cause damage to walls or floors and promote mould infestation.
Condensation on windows
Hint: This helps against condensation on the inside
- Avoid impairment of the air circulation. Radiator panels and long curtains cause the warm air to cool near the window.
- Ensure a regular air exchange. Regular shock ventilation promotes air convection and reduces room humidity. With shock ventilation, all windows are opened for five to ten minutes until the air in the room is replaced. In contrast to continuous ventilation - for example with tilted window position - the method saves a lot of energy with the same amount of air exchanged.
- High-quality edge spacers ensure improved thermal insulation in the edge area of the insulating glass, which also increases the overall window U value (Uw-Wert) steigert. (Uw value). The higher surface temperatures along the window frame prevent condensation.
Hint: This helps against condensation on the outside
- Close shutters or blinds on cold nights. As a result, the glass generally cools less.
- For insulating glass with a very low U-value, also use the special SILVERSTAR FREE VISION coating.