Reasons For Condensation on Outside of Windows & How To Deal With It

Condensation on outside of windows in the morning can be frustrating, especially during the winter and autumn seasons. The low temperatures make the perfect condition for condensation on walls, windows, and frames.

You can experience condensation during the summer as well, when moist and warm air touches your house exterior.  Condensation might be irritating but fortunately there are ways to prevent it.

The Reason for Condensation on The Outside or Exterior of Windows

Condensation on the outside of your windows happens when the outside air is more humid and warmer than the exterior surface of your glass window. Specifically, when the exterior glass surface falls below the dew point of air, it results in condensation on the outside of windows.

Winter and autumns cause this phenomenon naturally, which is why you usually observe more condensation around these seasons.

So how to get rid of condensation on outside of windows? What causes condensation on the outside of windows? Is condensation on the outside of windows bad?

This article will help you understand the causes of condensation and how you can get rid of it.

So without further ado, let’s get started.

Reasons For Condensation On Windows

Let’s elaborate on all the causes for condensation on a window.

To start with – seasons. Winter and autumns have just the right ingredients to cause condensation on windows.

It’s worth mentioning that the condensation during winters is different than the one you see during summers.

Condensation during winters is usually observed on the inner surface of your windows, while during summers it often on the outside surface of your windows.

Another reason for condensation is the usage of common household appliances. Running the dishwasher, drying clothes, or even cooking can contribute to household condensation and leave you with wet streaks on the inner surface of your windows.

The third reason is a very common one that I observe – improper installation or repair of windows. If they are sealed improperly it will lead to a temperature imbalance that will cause condensation.

Getting Rid Of Condensation On The Outside of Windows

Here are some ways you can look to reduce condensation on the outside surface of windows:

Open Window Coverings At Night

Remove or open any window coverings at night. Window coverings can trap moisture, which can cause condensation on windows.

Ensure Proper Air Circulation

If your windows or doors do not promote air circulation, the moisture in the trapped air will start condensing.

Ensure you keep your windows and door clear of any obstacles for ventilation

Raise Your Air Conditioners Temperature

When the air conditioner’s temperature is lowered, the water vapor in the air will condense on the cold surface. Increasing the temperature will cause water to evaporate more quickly, leaving less water vapor in the air for condensation.

Consider Upgrading Your Windows

Properly installed and insulated windows can not only save you up to 30% on your energy bills, but also contribute to a better indoor air quality by minimizing the amount of pollutants that come in from the outside.

Depending on where you live, upgrading your windows may be expensive, so make sure you exhaust all available options available to you first.

Getting Rid Of Condensation On The Inside of Windows

If you are seeing water droplets on the interior surface of your windows, try some of the following steps to help get rid of it:

Use a Dehumidifier

Dehumidifier help remove moisture from the air. Not only will it help you reduce condensation, it is also great to keep mold and mildew out of the house.

You can also consider installing a whole-house dehumidifier

Use Kitchen Chimneys Or Exhaust Fans

Leverage any chimney or exhaust fans you have to promote better air circulation to effectively reduce the amount of moisture in the house

Cover Tea Kettles Or Boiling Pots

These activities increase the amount of moisture in the air, which will later condense on your windows.

Keep Bathroom Fans On During Showers

In the same vein as above, vapors generated during showers would be ventilated out if you keep your bathroom fan or exhaust on.

Condensation on the outside of your windows happens when the outside air is more humid and warmer than the exterior surface of your glass window. Specifically, when the exterior glass surface falls below the dew point of air, it results in condensation on the outside of windows.

Is Condensation Something To Worry About?

Tiny amounts of condensation is ideally not cause for concern. However, large amounts of condensation generally marks the beginning of other problems.

The increased humidity levels lead to mold and mildew issues. Everyone knows the problems caused by mold and mildew.

Increased humidity also invites bugs like dust mites and bugs that look like lint, and tiny bugs that look like bed bugs.

Not to mention that increased humidity could also lead to higher allergens in the air. If you have an older home with walls that are too thick or thermal bridges (weak spots that allow for heat transfer), it may also be easier for condensation to form and cause water damage.

Persistent condensation may lead to tiny black dots showing up on your window, which just isn’t pleasant to look at.

Fixing these issues may end up costing you more in the long run, so why not get ahead of the problem?

Which Windows Are Better To Prevent Condensation

Double glazed windows are much better to prevent condensation. Single glazed glass fails to provide adequate insulation between inside and outside, and the temperature difference will cause moisture in the air to condense.

Double glazed glass is much more efficient and comes with a vacuum layer that promotes better insulation. Additionally, you can laminate this glass to protect your house from harmful UV rays.

There are other benefits to using double glazed windows too. It increases energy efficiency, and will save you on heating costs. They help maintain the room temperature by prevent heat loss, so its much less stressful on your ACs or heat pumps.

How To Stop Condensation On Outside Of Car Windows?

Foggy car windows are a frequent sight in cold weather, but you can experience this problem in summer too. 

Driving while your windows are foggy is not only frustrating, it can be life-threatening. Condensation can cause drivers to see the road ahead of them differently, making it more difficult for them to make decisions about how fast they should be driving or if they should brake.

You can eliminate this problem by using the following steps:

  1. Use your heater first to defog the windows
  2. Turn on your car’s AC and let the cooling coils pull the moisture
  3. After waiting for some time, kill the re-circulation button to fill the car’s interior with dryer and colder air
  4. Additionally, you can use the defroster to evaporate moisture by blowing warm air on your windows. 

how to stop condensation on outside of windows