Misted broken down double glazed units.
The double-glazed units in your windows and doors can suffer from seal failure; this can cause the units to mist up with condensation. Seal failure can be caused by faulty manufacture or incorrect installation. Some customers think a complete new frame is needed but it is an easy process to replace the faulty units and repair your windows and doors to their former glory.
The 'before and after' pictures below illustrate the difference this process can make!