Repairing Double Glazed Windows When Double-glazed windows "blow" in the wind, the insulating gas argon escapes, which causes them to lose their energy efficiency. The good thing is that blown double glazing is often repaired without needing to replace the windows. The presence of condensation or moisture between your double-glazed https://www.repairmywindowsanddoors.co.uk/bethnalgreen-windowrepair/