Fog or moisture trapped inside the glass panes of double-glazed windows suggests a failed Insulated Glass Unit (IGU) seal.
Feeling cold air coming through even when the window is closed. reseal windows
: Window seals generally last 7–10 years . Common signs that resealing is needed include condensation between panes (for double-glazed units), visible cracks in the old sealant, or feeling cold drafts even when windows are closed. Fog or moisture trapped inside the glass panes
Window seals eventually fail due to age, exposure to sunlight, and extreme temperature fluctuations. Look for these common indicators that it’s time for a refresh: visible cracks in the old sealant