There are a few reasons why condensation tends to be worse during winter:
- Greater Temperature Difference: In winter, the temperature outdoors is significantly colder than the temperature indoors. When warm, moisture-laden indoor air comes into contact with cold surfaces, such as windows, the air cools rapidly. As a result, its ability to hold moisture decreases, leading to condensation forming on the colder surfaces.
- Increased Humidity: During winter, we often keep our homes sealed tightly to conserve heat, which can limit the exchange of indoor and outdoor air. This can trap moisture indoors and increase humidity levels. Activities such as cooking, showering, and drying clothes indoors also contribute to increased humidity. The combination of higher indoor humidity and cold outdoor temperatures creates favourable conditions for condensation to occur.
- Reduced Ventilation: In colder months, we tend to keep windows and doors closed to retain warmth, limiting natural ventilation. Insulated homes can further restrict airflow, reducing the exchange of stale indoor air with fresh outdoor air. Inadequate ventilation prevents moisture from escaping and promotes the accumulation of dampness, exacerbating condensation issues.
To combat condensation in winter, it’s important to maintain proper ventilation and control humidity levels, for example, by using a dehumidifier.