Condensation on window glass is a common phenomenon that homeowners often encounter, especially during the cold season. The appearance of condensation causes concern and makes you think about the condition of the windows and their insulating properties. We hasten to reassure you: condensation does not always indicate the need to replace windows. In this article, we will look at cases when condensation is normal and when it is a problem that requires intervention.
1. Airspace Condensation
If condensation is detected between the glass panes of a double-glazed unit, the possible cause could be a faulty seal or micro-cracks in the glass. To identify this problem, the outer and inner panes of glass should be thoroughly cleaned, and the time and location of the condensation droplets should be observed. If condensation between the panels persists for a long period of time, the replacement of the insulating glass unit is required.
Conclusion: Replacement is required.
2. Internal Condensation and Fogging of the Glass on the Room Side
This phenomenon is often observed at the bottom of the window, along its edges, or even over the entire surface during the cold season. This fogging is not permanent. It may appear during cooking, showering, or when the washing machine is running, and it will go away after a while. Another cause may be the temperature of the glass, which is lower than the air temperature in a room with high humidity. In this case, it is sufficient to use exhaust fans and dehumidifiers in rooms with high humidity to eliminate condensation.
Conclusion: No replacement is required.
3. Internal Condensation Rings
This type of condensation forms on the inner surface of the insulating glass unit and can indicate problems with thermal insulation. Possible causes include temperature differences between the glass and the room, contact between the glass panels leading to a reduction in their thermal insulation properties, and increased humidity in the room.
Conclusion: It is necessary to assess the condition of the insulating glass unit; contact a specialist.
4. External Condensation This phenomenon may occur under certain atmospheric conditions and does not indicate a problem with glass quality.
Possible causes include:
o Differences in temperature between the glass and the outside air
o A clear night sky, which contributes to the cooling of the glass due to radiative heat exchange with the sky
o No wind, which allows the glass to maintain a low temperature for a long time
o High humidity outside
o Glass panes with low emissivity coatings are prone to condensation under the above conditions
Conclusion: No replacement is required.
If you have questions or concerns about condensation on your windows, you can contact us for an accurate assessment of the condition and a plan for further action.
