How to Remove Condensation From Double Glazing

The sealed units of a double-glazed window will eventually break down. When this occurs, moisture enters the dry space between, allowing condensation to form on the interiors of the glass. Eventually, it darkens and becomes an unsightly obstruction to your view. Fortunately, remedies are available to correct this condition.

1. Create a temporary fix by gradually heating the fogged area with a hair dryer.


2. Check the warranty on your window unit to see if it is still in effect. If moisture has been permitted to penetrate the sealed space between the double panes due to a defect in assembly or installation, the manufacturer is responsible for replacement. Double-glazed units vary in quality depending upon the complexity and durability of the seal. Warranty periods generally run from five to 10 years.


3. Peruse your local yellow pages or investigate online for window repair specialists in your area. A procedure exists to remove condensation, which reduces the cost of replacement by half. Do not try to do the job yourself, however, for it requires specialized tools to complete the process correctly. It involves drilling a tiny hole in the exterior glass panel, which allows the space between the panes to dry. Be aware that a majority of professional installers recommend against using this system, noting that it is at best only temporary.


4. Call a professional to have the window units replaced. Once the seal around the glass panes has been broken, it is not permanently repairable. It is not necessary to replace the entire window, but only the sealed units. Prices can fluctuate considerably, so be sure to get at least a couple of quotes before having the work done.