How do you get condensation out of a double-glazed window pane?
It will dry up when it gets warm but is likely to leave a mark which will get worse over time. It means your sealed double-glazed unit is no longer sealed and the inert gas inside it has escaped. The solution is to replace the sealed unit – just the glass, not the frame. Some places say they can repair and reseal ‘blown’ units but you’d have to weigh up the cost and appearance and likely durability.
