Condensation on windows is something that can’t be avoided in most cases. Humidity levels and wet weather cause the inevitable build-up we see in both traditional and double glazed panes. There is also the issue of misting that can occur in double-glazed glass, especially if you have older uPVC windows.
Plastic framed double glazed windows came onto the market in the late 80s, and these replaced the older aluminium framed examples. Although the edges on the pane are sealed to prevent moisture getting in between, in reality, most things degrade over time and so do uPVC windows. Newer models have guarantees, but if you’ve started noticing moisture build-up on the inside of your older double glazing, there are a few solutions to fix it. Companies like The Window Medic specialise in the repair of misted windows.
Take a look at how below:
Replace faulty windows
Unfortunately, repairing mist in your windows can be costly. However, if you don’t want a complete install of new windows, then opt to replace the faulty one in isolation. Moisture in the glazing means that a seal has probably failed, and this is a tricky fix to do yourself. If you have a guarantee on your windows, contact the installer to get a replacement. They may also send a specialist to fix it depending on the extent of the repair.
Repair faulty seals
Repairing faulty seals can be a challenging job. However, it is possible to do if you have good knowledge of this type of repair. The main issue with fixing it yourself is that not every window has the same type of seal. Some manufacturers produce beading and seals that are separate units while others are one-piece units that are difficult to remove.
Resealing the unit
Replacing seals is one option to fix misting, but you may also be able to use a sealant to reseal the beading. This is usually resolved by injecting a sealant along the bottom or in some cases, small vents can be inserted to allow airflow. Window professionals often fit vents if an anti-fog coating has been applied to the windows.
Replace broken glass
In some cases, misted windows are caused by small cracks in the glass. Some are so small you may not notice them without a closer look. If this causes your condensation, you will need to replace the glass. However, this again is not a simple job. In this instance, replacing the window ultimately will be the easiest solution, or hiring a professional to repair it is another suitable option.
Preventing beading degradation
As mentioned above, one of the leading causes of misting is due to seals failing. This can be caused by condensation build on the inside or outside of the pane that eventually degrades the sealant and beading. To avoid this, open windows where moisture builds up such as the kitchen or bathroom, and use an extractor fan where possible. Plus, wipe windows with a cloth to remove any water build-up long seals.