Steamed up sealed units in double glazing is a common problem and most often occurs after the guarantee has passed! The glass takes on a wet / misty appearance which make's the view from any window obscure and awful. Fortunately though, replacing a sealed unit is not quiet as expensive as one might think, and it is a relatively simple job too do.
The panes of glass used in double glazed windows are called sealed units. The panes are separated by a spacer bar which contains thousands of tiny silica balls. These same balls can be found in the little bag you find in the box when buying trainers or shoes.
It is these balls which should soak up any moisture that exists in the air gap between the two panes of glass in your window.
Once the silica has become saturated the moisture in the air gap will begin to mist, or fog up your double glazing. This should not occur for at least 5 years from the date of installation and most companies do offer a 10 year guarantee. It is a good idea to check your receipts to see if you windows are less than the guaranteed period.
The break down of an old sealed unit is a natural process and if it is past the sell by date,it is nobody's fault. If the unit breaks down prior to the guarantee expiring then the replacement glass for windows should be provided by the supplier.
If you have flicked a stone at your patio with the lawn mower or accidentally smashed one of your sealed units, then fortunatley getting your window glass replacement is a simple task.
The process usually involves you calling out a window repair man who will provide and install a made to measure sealed unit to replace the damaged one.
Normally the repair man will call once to measure up and secure the broken window, he'll then call back at a later date once the replacement sealed unit has been manufactured and is ready for installation.
The installation of the new sealed unit is a simple process that does not usually take very long to complete. Once the old unit has been removed all that remains is for the repair guy to fit the new sealed unit.