Winter window woes? 5 ways to prevent condensation in the cold weather

Condensation on windows is a common problem during the winter months, especially in Australia’s colder southern States and the ACT. In this article we look at why condensation occurs, how you can stop it from happening, and what you can do in those instances when it can’t be prevented.

Condensation occurs when warm, moist air comes into contact with cold surfaces like window panes and window frames. The air cools down, and the water vapour in it turns into water droplets on the surface. This is why condensation is more common on single-pane windows, which are colder than double-glazed windows. The problem is exacerbated by poor ventilation, high humidity levels, and lack of air circulation.

Condensation can cause a range of problems, such as mould growth, damage to window sills, and even damage to walls and ceilings if left unchecked. Fortunately, there are several ways to reduce condensation on windows during the Australian winter.

This can be achieved by opening windows and doors to increase airflow and allow moist air to escape. If you don’t want to have windows open on cold or rainy days, even for a short while, you can also use exhaust fans in the bathroom and kitchen to remove excess moisture from the air. This will allow the warm air to circulate and reduce the risk of condensation forming on cold surfaces.

One way of insulating windows is to get double glazing, but a lower cost alternative is to add a plastic window film to insulate the windows. Both options will help to keep the temperature of the window surface above the dew point, reducing the likelihood of condensation forming on the cold surface.

Don’t just have curtains or blinds, use them strategically to reduce condensation. Curtains and blinds can help to reduce the amount of moisture that reaches the windows. Open them during the day to let in sunlight and air, but close them at night to keep the warmth inside - even in rooms or areas that you won't be using in the evening. This will help to create a barrier between the cold air outside and the warm air inside, reducing the risk of condensation forming on the windows.

Use a device called a hygrometer (which you can pick up for a few dollars at your local hardware store) to monitor the humidity levels in your home. Ideal humidity levels are between 30-50%. If the levels are higher, take steps to reduce the moisture in the air. For example, avoid drying clothes indoors in the colder months or limit the amount of time you spend showering to reduce the amount of water vapour in the air.

Adding a few house plants to your home can also help reduce humidity levels, as they absorb moisture from the air and release it back into the atmosphere.

If changing clothes drying and showering habits, and adding house plants, doesn’t sufficiently reduce high humidity levels, a dehumidifier is a good next step. Dehumidifiers are freestanding appliances that remove excess moisture from the air, which can help to reduce the amount of moisture that reaches your windows.

When it comes to double glazed windows, preventing condensation on the outside can be a little more challenging. Double glazed windows are designed to keep the warm air inside and the cold air outside, which can lead to condensation forming on the outside of the window panes. To prevent this, it is essential to ensure that there is proper air circulation around the windows. This can be achieved by using awnings or opening windows to allow warm air to circulate.

If you do get interior window condensation, wipe it off as soon as possible - but do so with care. While wiping the windows won't stop condensation from forming, it will help to prevent water droplets from building up and causing damage to the window frames and sills.

Use a dry, lint-free cloth, ideally microfiber, which is highly absorbent and won't leave any residue or streaks (never use tissues because they disintegrate). Be careful not to wipe towards the edges, which can push the moisture into the window sills and frames, leading to potential damage and mould growth, particularly if you have wooden window frames or silicone sealant.

Start at the top and gently wipe downwards. To avoid the water pooling at the bottom of the window, it’s a good idea to place another cloth or towel along the bottom of the window pane to absorb any rivulets caused by the wiping.

Window condensation is a common problem during the winter months, but it can often be prevented by increasing ventilation, insulating windows, monitoring humidity levels and using dehumidifiers.

Whether you’re a homeowner or you rent, it pays to take some steps to reduce condensation in your home. Increasing airflow, reducing moisture build-up, and insulating windows during the colder months will not only help to prevent damage to the windows and surrounding areas, but also improve the overall air quality in your home.

We deliver dehumidifiers, heaters, energy efficient air con units and everything else you can find on our site to 95% of Australia’s population with Appliances Online's legendary FREE delivery - and we can usually get it to you by the next day (Mon-Fri). Check out our full range of dehumidifiers and if you need a few more tips on choosing the right one for your home, take a look at our Dehumidifier Buying Guide or call our friendly team 24/7 on 1300 000 500.

Winter window woes? 5 ways to prevent condensation in the cold weather

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