Resealing Double Pane Windows

Double pane windows, also known as insulated glass units (IGUs), are designed to provide energy efficiency and reduce heat transfer between the inside and outside of a building. However, over time, the seal between the two panes of glass can fail, allowing moisture to enter and compromising the window's performance. Resealing double pane windows can be a cost-effective solution to restore their energy efficiency and extend their lifespan.

If the fog is between the glass, you cannot simply "caulk it shut." To truly reseal a double-pane unit, the glass must be removed, the old seal stripped away, the interior panes cleaned/dried, and a new seal applied in a factory-controlled environment. resealing double pane windows

Double-pane windows, also known as Insulated Glass Units (IGUs), consist of two sheets of glass separated by a spacer. The gap between them is filled with air or an insulating gas like argon or krypton. The "seal" is actually a two-part system: Double pane windows, also known as insulated glass

because it is nearly impossible to remove 100% of the moisture at home. If even a tiny bit of humidity remains, the window will fog up again within weeks. Solutions for Blown Seals Defogging (The Budget Option) If the fog is between the glass, you

For a permanent fix, follow this process:

Before grabbing a caulk gun, you need to confirm that the seal has actually failed. Look for these specific symptoms: