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What we call failed units are double or triple glazed sealed units that have excessive moisture trapped in the cavity between the panes of glass. The cause of this is that there is a breach in the hermetic seal (airtight seal) around the edge of the sealed unit, which allows moist air to enter the cavity of the unit over a period of days, weeks or months.

When the temperature rises, the moist air that is trapped within the unit will condense. Then, over a period of time, this gives a white cloudy effect which to the eye is irritating and unsightly. Over 90% of failed sealed units are south-east to south-west facing due to the fact that the sun rises in the east and sets in the west providing the greatest change in daily temperature. This in turn will create the most movement in the window and door frame through expansion and contraction.

It is our opinion that if there were any weaknesses or faults in the original manufacturing process of the double glazed sealed unit, the continual expansion and contraction of the window or door frame will eventually cause the sealed unit to fail at the point of defect.

It is our professional opinion, after decades of working within the double glazing industry that the only long term solution to this problem is to fully replace the failed unit with a new one. We can offer this service to any timber, uPVC or aluminium frame of any age with a full warranty

‘Cavity Failed Sealed Units’

We are your ideal choice for double glazing repairs and replacement.

During the colder months, where the outside temperature drops significantly, condensation on the internal surface of sealed units can materialise due to the increased difference between internal and external temperature.  This causes the glass surface to be much colder than the actual room temperature itself.

Try this simple experiment

Put the palm of your hand flat on the window or door frame. Count to ten, then place the palm of your hand flat on the glass. You will instantly feel the glass is much colder than the frame.

 

So what needs to be done?

Put simply the glass temperature needs to be raised.

This can be achieved by fitting more energy efficient units using warm edge spacer bar technology, combined with low emission glass and argon gas inserted between the panes of glass.

We have had considerable success in greatly reducing condensation by fitting more energy efficient units. Also, in many instances, we have completely stopping condensation occurring.

 

Winter Months

Don't put up with that damaged double glazing. Get our reliable window repair service today, call us on

01726 74575

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