{"id":15001,"date":"2025-10-06T12:29:33","date_gmt":"2025-10-06T12:29:33","guid":{"rendered":"https:\/\/www.solusio.be\/condensation-in-double-glazing-causes-consequences-and-solutions\/"},"modified":"2025-10-06T12:40:34","modified_gmt":"2025-10-06T12:40:34","slug":"condensation-in-double-glazing-causes-consequences-and-solutions","status":"publish","type":"post","link":"https:\/\/www.solusio.be\/en\/condensation-in-double-glazing-causes-consequences-and-solutions\/","title":{"rendered":"Condensation in Double Glazing: Causes, Consequences, and Solutions"},"content":{"rendered":"

[vc_row kd_background_overlay=”default” kd_background_image_position=”vc_row-bg-position-top”][vc_column][vc_column_text]You probably know it: windows that fog up on a cool morning or while cooking. A little condensation on single-pane glass or on the inside of a window is normal<\/strong>.<\/p>\n

But what if condensation appears between the two panes of your double glazing? Then it’s time to be cautious, because that’s a sign that something is wrong with your windows[\/vc_column_text][vc_empty_space][\/vc_column][\/vc_row][vc_row content_placement=”middle” kd_background_overlay=”gray-color” kd_background_image_position=”vc_row-bg-position-top” css=”.vc_custom_1719408216266{margin-bottom: 50px !important;border-bottom-width: 4px !important;padding-top: 25px !important;padding-right: 50px !important;padding-bottom: 25px !important;padding-left: 50px !important;background-color: #f7f7f7 !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;border-bottom-color: #8dc63f !important;border-bottom-style: solid !important;}”][vc_column]

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Condensation on Windows: Normal or not?<\/h2>\n

Let’s first make a distinction. Condensation on the inside of your window is rather normal<\/strong>. It is often caused by high indoor humidity combined with insufficient ventilation. This is annoying (and harmful to health in the long run), but not necessarily a problem with the window or the glass itself. <\/p>\n

Condensation between the panes of double glazing, on the other hand, is indeed a warning sign.<\/strong> It means that the insulating layer between the windows is no longer airtight. Moisture has penetrated where it should never be. Time to address it![\/vc_column_text][vc_empty_space][\/vc_column][\/vc_row][vc_row kd_background_overlay=”default” kd_background_image_position=”vc_row-bg-position-top”][vc_column][vc_column_text]<\/p>\n

How Does Condensation Form between Double Glazing?<\/h2>\n

Double glazing consists of two panes of glass with an airtight layer in between. This layer is often filled with dry air or an insulating gas, which improves the window’s insulation. This makes it difficult for cold to spread. <\/p>\n

When that sealed system is no longer completely airtight, moisture gets into that airtight space. When the temperature difference between inside and outside increases, that moisture can condense. You will then see droplets or blurry spots between the glass panes. The possible causes are: <\/p>\n