Double Glazed Window Repairs Double glazing can cause problems over time, such as an air bubble between the glass or rotting frames. These problems are simple to fix and can be cheaper than you thought. Make sure to contact the company from whom you purchased the item to determine whether there is a warranty. You should also try to resolve any issues yourself. Sealing window repairs near me seals, referred to as uPVC window seals, play an significant roles in the insulation of double-glazed windows. Faulty seals may cause drafts, condensation and other problems. Fortunately damaged seals can be repaired or replaced to restore the effectiveness of your double glazing. Water leaking between glass panes is the most common sign of double-glazed windows that require to be resealed. This water can cause damage to the window frames and raise energy costs. Moisture between glass can also cause a fog that fluctuates dependent on the temperature of the outside or indoor humidity levels.