Double Glazing Window Repairs If your double-glazed windows have a fault, you should repair them as soon as is possible. If the seals have been damaged, it can lead to draughts or condensation and make your home less efficient on energy. Repairing double-glazed windows is generally cheaper than replacing it. https://www.repairmywindowsanddoors.co.uk/burystedmunds -windowrepair/