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Adding a roof window to your property is a surefire way to increase natural light and ventilation in your home. A roof window not only helps an interior space become brighter, but it can also add to the energy-efficiency of a property. However, the charm of these windows can be marred by the common issue of condensation.

Condensation can lead to mould growth or wood rot, causing some big problems in your home. In the following guide, we’re going to explore how you can reduce condensation and maintain a more comfortable living environment.

Why does roof window condensation happen?

Condensation on your roof windows is a normal occurrence. It happens when warm, moist air inside your home comes into contract with the colder surface of the windowpane. This causes the moisture in the air to condense into water droplets that gather on your window. Here are some of the main reasons why you might be seeing excessive condensation on your roof window:

  • Differences in indoor/outdoor temperatures: During the cold months of the year, the temperature difference between inside and outside makes condensation more likely to occur.


  • High levels of humidity: Daily activities like cooking, bathing, or drying clothes indoors can increase indoor humidity levels, causing more condensation.


  • Poor ventilation: If a room is poorly ventilated, moisture can be trapped inside, contributing to condensation.

How to stop window condensation

There are a few simple tips you can use to stop roof window condensation:

  1. Increase ventilation: Try to make sure there is regular airflow throughout your home. You can do this by opening windows or using extractor fans.
  2. Use a dehumidifier: A dehumidifier helps to reduce indoor humidity levels, making condensation less likely.
  3. Maintain your roof windows: Regular maintenance, including checking for leaks and ensuring seals are intact, can prevent excessive moisture from compromising window performance, helping you stop window condensation.
  4. Don’t dry clothing indoors: if you can help it, try not to dry clothing indoors on an airer or on your radiators. Drying clothes on an outdoor washing line or using a tumble dryer is a good way to reduce condensation.

Purchase a window designed to prevent condensation

Let’s say you already do everything above and you still need to know how to stop window condensation. If this is the case, the problem might be with your roof window.

A good way to get around this is to purchase a roof window that has been specifically designed to combat the build-up of condensation. Windows from manufacturers such as Fakro, Velux and Keylite offer a series of features that help to achieve this, including:

  • Ventilation features: Many roof windows come equipped with built-in ventilation systems, allowing for controlled airflow. These will work to reduce condensation, even when a window is closed.
  • Thermal break frames: A thermal break is a material with low thermal conductivity that is placed between metal components of a window. This reduces heat transfer and increases the window’s insulation properties.
  • Double or triple glazing: Multiple layers of glass can help to reduce condensation. By providing better insulation, the internal windowpane will stay warmer.

By purchasing a top-rated roof window, designed to combat condensation – you will find a more permanent solution. However, it’s not the end of the story. You will also need to conduct regular maintenance on your roof window, such as checking and replacing worn seals.

This can stop window condensation by trapping warm air and stopping moisture entering. The window’s insulation capabilities will be maximised, while temperature difference will be minimised. It can feel like a delicate balance to get right, but it only takes a small amount of maintenance to ensure your window is working as intended.

Find condensation-busting windows with Roof Window Outlet

While there are many tips you can use to reduce condensation in your home, sometimes buying an efficient roof window is the best, long-term solution. When searching for the best condensation-busting windows, always consult with experienced suppliers like Roof Window Outlet.

With a diverse range of windows from trusted manufacturers like Fakro and Keylite, we can help you every step of the way to finding the perfect window for you. Contact our friendly team of experts today for more information.

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