That is inside the sealed unit.
Surface cleaning will not remove condensation trapped between panes. The practical repair is to replace the failed sealed glass unit while retaining a sound frame.
Failed, misted, cracked or smashed double-glazed sealed units can often be replaced independently while a sound existing window or door frame stays in place.


Surface cleaning will not remove condensation trapped between panes. The practical repair is to replace the failed sealed glass unit while retaining a sound frame.
Damaged glazing should be assessed promptly, particularly where the break affects security or leaves sharp edges exposed.
For misted or broken units, a photo and approximate size can help start the quotation conversation before a final measure.