Windows

How to Get Rid of Condensation Inside Windows?

  1. - By APL Apollo
  2. 19-Dec-2025
How to Remove Condensation Inside Windows

Are you frustrated by windows that seem to “sweat” all the time? You are not alone. Window condensation is a common problem among homeowners, and it typically happens when there is a significant temperature difference between the inside and outside of the home. While a few occasional patches are fine, excessive moisture in the windows can lead to mold growth, frame damage, and poor indoor comfort if left unattended.

To help you, here is a short guide that will break down why condensation occurs inside the window and explore some practical solutions to manage it throughout the year:

What Causes Condensation Inside the Windows?

Condensation happens when warm, moist air inside your home comes into contact with cooler glass surfaces. The temperature difference causes the moisture in the air to cool and turn into liquid droplets on the glass.

Here are some factors that contribute to moisture buildup on the inside of windows:

  1. High Humidity Levels Indoors: Activities like cooking, showering, drying clothes inside, or even breathing, often increase the overall humidity level, leading to moisture buildup on windows.
  2. Poor Ventilation: Limited airflow inside your home traps humid air, leading to condensation on windows.
  3. Inefficient Windows: Older, single-glazed windows allow more heat loss, causing condensation.
  4. Cold Temperature Outside: During colder weather, window glass becomes colder, causing warm indoor air to condense on its surface.

Must Read: Different Types of Doors for Modern Indian Homes

How to Get Rid of Condensation Inside Windows?

Here are some ways to get rid of condensation inside windows:

  • Improve Ventilation
    Proper ventilation is one of the most effective ways to prevent windows from fogging up. Improving airflow by slightly opening windows, using extractor fans, or installing trickle vents helps move moist air outside before it settles on the glass.
  • Use a Dehumidifier
    Installing a dehumidifier can help you lower humidity levels and prevent condensation from forming on windows. Place the dehumidifier in the kitchen, bathroom, laundry room, or any area with high humidity levels.
  • Dry Clothes Outdoors
    Do you dry your clothes indoors? If yes, this could be one of the reasons for condensation forming on your windows. Drying clothes indoors releases excess moisture into the air, which can settle on cooler window surfaces. If indoor drying is unavoidable, ensure the room is well ventilated or use a dehumidifier to keep humidity levels under control.
  • Keep Your Plants Outside
    While plants have many benefits, they also produce moisture, which contributes to condensation inside the windows. So, if you are dealing with condensation in rooms with plants, consider moving them outside.
  • Upgrade to Energy-Efficient Windows
    Modern uPVC windows with proper sealing and double- or triple-pane glass provide better insulation, reducing temperature differences that lead to condensation. If your windows are old or drafty, upgrading them can significantly reduce moisture buildup while also improving energy efficiency and lowering utility costs.

Must Read: Bay Window vs. Bow Window: Which One is Right for Your Home

Condensation Between Double-Glazed Windows

Double-glazed windows are designed to reduce condensation, but they are not immune to it. The condensation between double-glazed windows typically happens when moisture gets trapped between the two panes of glass. This usually happens due to failed seals, ageing windows and high humidity levels.

Here are some effective ways to prevent condensation:

  • Check Window Seals: Inspect the seals around your double-glazed units. Damaged or deteriorating seals allow moisture to enter the space between panes, resulting in window fogging.
  • Ensure Proper Ventilation: Ventilate regularly, especially in kitchens and bathrooms, to lower humidity levels that can worsen condensation.
  • Use Thermal Curtains: Thermal curtains help keep warm air in, preventing windows from becoming too cold and attracting moisture. However, ensure they do not restrict airflow around the windows, as proper air circulation is essential to prevent condensation.

Window condensation can happen for many reasons. While condensation during seasonal changes is normal, consistently experiencing excessive moisture on windows or noticing signs of damage may indicate an underlying issue that needs attention. There are many ways to tackle condensation, but choosing the right windows from the beginning can go a long way toward moisture control.

At APL Apollo Door and Windows, we offer a range of uPVC windows designed with superior insulation, robust sealing, and efficient glazing options that help maintain stable indoor temperatures and reduce the risk of condensation. Being the best uPVC windows manufacturer, we aim to deliver windows that enhance the comfort and performance of your home throughout the year.

Frequently Asked Questions

  1. How do you stop windows from condensation?

    To stop your windows from condensation, you must improve ventilation of your home, reduce indoor humidity, avoid drying clothes indoors, use a dehumidifier, and maintain consistent indoor temperatures.

  2. Why is there condensation on the inside of my windows in the morning?

    The condensation inside windows in the morning is mainly due to the warm, moist indoor air that hits the cold glass surface, causing the water vapour to turn into liquid droplets. This is most common during winter when outside temperatures drop, making the window glass colder.

  3. Do I need new windows if I get condensation?

    It depends entirely on where the condensation appears. If the condensation is inside, it can be fixed through ventilation, dehumidifiers or wiping. However, if condensation is between the window panes, you will likely need to replace the glass unit or the whole window for energy efficiency.

  4. Do uPVC windows help prevent condensation?

    Yes. uPVC windows provide better insulation and airtight sealing, keeping the inner glass surface warmer and reducing temperature differences that lead to condensation. You can find the best uPVC windows in India at APL Apollo Doors and Windows.

  5. What causes condensation inside double-glazed windows?

    Condensation inside double-glazed windows usually occurs due to a failed seal between the panes, which allows moist air to get trapped inside and fog the view.