Repairing Double Glazed Windows When Double-glazed windows "blow" they let the insulating gas argon escapes, causing them lose their energy efficiency. The good news is that blown double glazing can be repaired without having to replace your windows completely. Condensation or moisture in between your double glazed windows is the https://www.repairmywindowsanddoors.co.uk/sittingbourne-windowrepair/