Double Glazed Window Repairs Over time, double glazing may create problems like mist between glass or a decaying frame. These issues are simple to fix and could be less expensive than you thought. You may have an insurance policy for your double glazing. Check with the manufacturer you purchased it from. It is worthwhile to try fixing any issues yourself before you call a professional. Sealing window repair near me seals (also known as upvc window repairs seals) play a crucial part in the insulation of double-glazed windows. Insufficient seals can cause condensation, drafts and other issues. Fortunately damaged seals can be replaced or repaired to restore your double glazing's efficiency. The most common sign that double-glazed windows require sealing is the possibility of water leaking between the glass panes. This moisture can cause stains, damage to the frames of the windows, and also increase your energy bills.