Sealed Units

What is a sealed unit?

In a double glazed window, the two panes of glass which are sealed together between a gap of air is called a sealed unit.

How are sealed units repaired?

Once sealed, a double glazed sealed unit is not designed to be taken apart again. Therefore the only economical way to repair a broken or misted sealed unit is to replace it.

Get your misted and broken sealed units repaired

Why do windows mist up?

If a hole develops in the seal between the two panes of a double glazed window, moisture is allowed to enter inside. When the temperature changes this moisture condenses into a liquid and over time this liquid builds up, unable to escape. This generally results in a misted or foggy window.

What are the advantages of replacing a misted sealed unit?

Replacing a misted sealed unit can have many benefits.

  • Get a clear view out of your window
  • Improve insulation and energy efficiency of your home
  • Maintain the value of your property
  • Improve the appearance of your house

Types of glass

We have sealed units manufactured in two main types of glass; float and toughened.

Float Glass - This is the standard glass used in the majority of domestic windows because of its smooth surface and even depth.

Toughened Glass - Toughened glass, or safety glass, has greater strength and a higher thermal resistance compared to float glass, and it is designed to shatter into small pieces when broken as opposed to jagged shards. These unique properties make toughened glass ideal for windows where safety is a consideration. Toughened glass is required in certain circumstances in order to conform to UK building regulations.