Condensation, New Replacement Windows, and Persistent Moisture: What Can You Do?

A common problem that Toronto homeowners experience throughout the winter is that the colder it gets outside, the more moisture may tend to build up on certain windows. This can happen on not only single pane windows, but also double glazed windows.

This condensation that occurs can be due to several factors. First and foremost, the colder that it gets outside and the warmer that it is inside the house, the more likely that you will see condensation forming on the glass. If it is happening inside the house, that means that your home has a higher humidity level than you might have thought.

Any time there is increased humidity outside or inside the home, such as a significant difference between the exterior and interior of the home, there is going to be moisture forming on the glass when there is a significant temperature difference as well.

It is the same phenomenon you will notice when you have a nice, cold glass of iced tea or other beverage in the summer. When you bring that glass outside into the heat, you will notice that condensation forms on the outside part of the glass.

When you have cold air outside your home, it is drawing that moisture inside the house to the glass. This might not seem like a big deal, but the colder it gets outside, the more moisture will build on that glass and it will slide down and collect on the window frame and the windowsill. Over time, this can lead to mold and mildew as well is rotting of the wood.

Getting more energy efficient windows is one of the best solutions that you can find. Having double glazed windows that are sealed with argon or krypton gas will help to cut down on the amount of cold air that hits the inside portion of the window. If you notice moisture forming on your windows now, it could be the result of a seal having failed or other issue with old, outdated windows.