Conserve Double glazing

Fitting reasonable quality double-glazed windows will more than halve the heat loss from your property and could reduce your energy bills by around £165 per year

Windows which are double glazed have two layers of glass with an air space between them. This air space can be filled with air or gasses such as argon, xenon or krypton.This trapped air or gas acts as insulation by reducing the passage of hot and cold air between the inside and outside of your house.

Double glazing
20 Maximum lifetime of measure (yrs)

Double glazing may also have a unnoticeable low emissivity coating. Low emissivity coating allows the heat from the sun to enter and warm the room but when this interior heat tries to escape to the colder outside, the coating reflects the heat back. This reduces the radiant heat loss through the glass and can also be a benefit in the summer, as the reverse happens and your rooms stay cooler.

Double glazed windows are available in five main frame materials; uPVC, wood, aluminium, steel and composite.

  • Double glazing Advantages

  • Energy efficient windows could save you around £165 per year on your energy bills compared to existing single glazed windows.
  • If you install Energy efficient windows you will use less fuel. This means that you will be generating less of the carbon dioxide that leads to global warming which is typically 680kg a year.
  • Energy-efficient glazing reduces draughts and cold spots.
  • Energy efficient-windows cut down outside noise.
  • Energy-efficient glazing reduces condensation build-up on the inside of windows.
  • Double glazing Disadvantages

  • All your existing windows will need to be ripped out of your home so you will have to be prepared for the disruption and mess that this work causes.
  • A large outlay is required when you choose to replace your existing windows with new double or triple glazed windows.

Available with

You can get grants for Double glazing, below are the schemes this is available with.

* According to data sourced from the Energy Saving Trust website.