How to Repair Double Glazed Windows

Double glazing is usually covered by a warranty of 10 or 20 years. If your double-glazed windows show signs of aging, you may be eligible to be repaired under warranty.

Double-glazed window repairs involve resealing the existing glass unit. The misting is a clear indication that the seal has failed and you have to have it fixed.

Glass damaged

A seal that is airtight is vital for double pane windows to function properly. Condensation between the glass plates is a common indication of a failing seal. Condensation between glass plates is not a major problem and can be corrected however, it's a sign that your glazing unit needs replacing. If you have a double-glazed window that is older, it could be necessary to replace the glass as well as the frame. If your frame is in good shape, you may be able to save money by just replacing the glass.

Double-paned windows can develop cracks because of the fragility of glass. Unless the cracks are caused by mechanical damage or an unusual impact, it's possible to repair these cracks using epoxy and tiny amount of elbow grease. Follow the manufacturer's instructions and scrub the crack by using a damp cotton cloth. Then apply the epoxy to the crack. Allow the epoxy to completely dry before applying paint and sanding to the repaired area.

A simple strip of masking tape can be used to keep cracks from spreading. One strip of masking tape placed on each side of the crack should be sufficient to prevent superficial cracks from spreading, like stress-cracks that are caused by low temperatures. However, if you're dealing with deeper cracks that are already forming in your glass, it might be best to call a professional to ensure the security of the repair.