How to Stop Window Condensation: Causes, Prevention, and Solutions

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How to Stop window Condensation!
What causes condensation on windows?
How to get rid of condensation on windows?

Window condensation is a problem that usually appears during winter which can lead to health hazards. Here’s what causes condensation on your windows and how you can get rid of it.

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What causes condensation on windows?

Window condensation occurs when warm, humid air inside a home comes into contact with a cold window surface. This can happen in the winter when the temperature inside a home is warmer than the temperature outside. The warm air loses heat to the cold window, causing the moisture in the air to condense and form droplets on the glass. This can be a problem because it can lead to mold growth and damage to the window frame.

Double-glazed windows have two glass panes separated by air or argon gas that have two seals designed to keep out moisture and retain heat in your house. If you see condensation building up in your window, then it is likely that one of these seals has broken.

Condensation causes dampness which in turn causes mould which the NHS warned that - among many other health problems - causes asthma attacks.

Does window condensation cause mould?

Yes, window condensation can lead to mold growth. When warm, humid air inside a home comes into contact with a cold window surface, the moisture in the air condenses and forms droplets on the glass. If the condensation is not wiped away and the window is not properly ventilated, the moisture can become trapped, creating the perfect environment for mold to grow. Over time, this can lead to discoloration, musty odors, and structural damage. It is important to address window condensation as soon as it is noticed, as mold can be difficult to remove and can cause health problems.

window condensation

According to the NHS website, moulds produce allergens and toxic substances that when inhaled or touched can cause “allergic reaction, such as sneezing, a runny nose, red eyes and skin rash.

“Moulds can also cause asthma attacks.”

You can use a hair dryer on a window with condensation but it's only a quick and temporary fix.

How to get rid of condensation inside windows?

There are several methods to temporarily fix condensation buildup inside windows, here are a few:

Ventilation: if humid air cannot be released then it will cause water droplets to form inside cold surfaces in your home, therefore good ventilation is important to tackle the problem. If you’re heading out, leave your trickle vent open and open your windows every morning.

window condensation

Dehumidifyingdehumidifiers prevent the buildup of excess humidity in your home which therefore prevents condensation, you can purchase one on Amazon making it a quick fix for the issue.

Improvise e.g., use a hair dryer: if you adjust your hair dryer to a low heat you can use it to evaporate the condensation trapped inside your windows, however ensure you do so at a safe distance or else you could accidentally melt other parts of the window.

How can you stop condensation on windows?

There are several ways to prevent or reduce window condensation:

  1. Control indoor humidity: Use a dehumidifier to keep indoor humidity levels low, especially during the winter months.

  2. Increase ventilation: Open windows and use exhaust fans to remove moist air from the house.

  3. Use insulated window treatments: Insulated curtains or shades can help to reduce the amount of heat loss from the window, keeping the window surface warmer and less likely to cause condensation.

  4. Check for air leaks: Seal any gaps or cracks around the window frame to prevent warm, humid air from entering the area around the window.

  5. Insulate the window: Installing storm windows or applying plastic window insulation can help to reduce the amount of heat loss through the window.

  6. Keep the windows clean: Regularly clean the windows to ensure that they are free of dirt and dust, which can trap moisture and promote mold growth.

It’s also important to note that in certain cases, window condensation may be caused by a malfunctioning window unit, such as a broken seal, in these cases, you may need to replace the window or have it repaired.

While it is not the cheapest option it is often recommended that the entire glass unit be replaced as this may secure the window from condensation and also reduce damp and mould that develops in your home as a result. Get in touch with us to book a free home visit with one of our experts and explore your options. Click the button below and fill in your details or request a call back to start.