Repairing Double Glazed Windows When Double-glazed windows "blow" in the wind, argon that is insulating escapes causing the window to lose energy efficiency. The good news is that blowing double glazing is usually repairable without having to replace the windows. Condensation or moisture in between your double glazed windows is https://www.repairmywindowsanddoors.co.uk/sutton-windowrepair/