Wet windows every morning? Why condensation appears and how to get rid of it
Condensation on windows (photo: Styler)
As the weather gets colder, the difference between the temperature indoors and outdoors becomes greater, which is why water droplets form on windows more often. If this happens every day, excess moisture can contribute to mold growth, while prolonged exposure to a damp environment may negatively affect health.
RBC-Ukraine explains what to do to prevent condensation from forming on windows.
Why does condensation appear on windows?
Condensation forms when warm, humid air comes into contact with a cold surface. In winter, glass often becomes such a surface, which is why water settles on windows.
According to the UK government’s recommendations on damp and mold, condensation is one of the most common causes of increased moisture in the home. It is most often noticed on windows, in the corners of rooms, on ceilings, and behind furniture near external walls.
In addition to residents’ habits, the condition of the home itself directly affects the amount of condensation. Poor ventilation, low surface temperatures, inadequate insulation, and so-called thermal bridges can make the problem worse.
Where does excess moisture in an apartment come from?
Everyday household activities inevitably add moisture to the air inside the home. It is produced while taking a shower, cooking, doing laundry, and drying clothes. Therefore, it is important not only to wipe water off the glass but also to reduce the amount of moisture indoors and ensure that it is removed.
When cooking, use the kitchen extractor fan, and when showering, use the bathroom ventilation. It is better to keep the doors to these rooms closed so that moisture does not spread throughout the apartment.
According to the World Health Organization, persistent dampness and mold indoors are associated with an increased risk of respiratory symptoms, allergies, and asthma.
How to get rid of condensation on windows
- Ventilate the apartment regularly. Open the windows for a few minutes to refresh the air, and do not block ventilation openings. If condensation has increased after replacing windows or insulating the home, it is worth checking whether the ventilation system is working properly. The UK government provides relevant recommendations.
- Do not place furniture directly against external walls. Leave a small gap so that air can circulate. This is especially important in cold corners of a room. The Consumer Advice Centre of North Rhine-Westphalia provides similar recommendations on air circulation and preventing moisture buildup.
- Control humidity levels. You can check the humidity level using a hygrometer. If humidity remains consistently high, a dehumidifier may help. Mayo Clinic recommends maintaining indoor humidity at 30–50%.
- Dry laundry in a well-ventilated area. Wet clothes add extra moisture to the apartment, so when the weather gets colder, it is important to ensure that moisture can escape.
- Wipe water from the glass and frames. This will not eliminate the cause of condensation, but it will help prevent moisture from remaining on surfaces. If the windows become wet every day, it is worth looking for the cause of excessive humidity or ventilation problems.
When do you need a specialist?
If condensation does not disappear and dark spots or a musty smell appear on the frames or walls, it is worth checking the ventilation, windows, insulation, and possible leaks.
The World Health Organization notes that prolonged exposure to damp indoor environments is associated with an increased risk of respiratory symptoms, allergies, and asthma. Therefore, it is important to eliminate not only the mold itself but also the cause of the moisture.
