Repairing Double Glazed Windows Double-glazed Windows "blow" in the wind, the gas that insulates them, argon, escapes, causing them lose their energy efficiency. The good news is that blowing double glazing is usually repaired without needing to replace the windows. Moisture or condensation in between your double-glazed windows is the https://www.repairmywindowsanddoors.co.uk/grays-windowrepair/