The overall thickness of standard double glazing is determined by the depth of the first pane of glass plus the spacer bar and the second pane of glass. This is often written out as 4 – 8 – 4, which means a 4mm pane of glass, 8mm spacer bar, and 4mm pane of glass, totalling an overall depth of 16mm.

The cavity between the two panes of glass is filled with Argon or Krypton gas which have low thermal conductivity. This enables double-glazed windows to retain more heat, hence how they keep homes much warmer than single-glazed windows.

The thinnest a standard double-glazed window can be is 14mm, which is made up of two 4mm glass panes and a 6mm spacer bar. However, there are exceptions, and we can offer you one of them! 

Our vacuum insulated glass boasts a 0.1mm vacuum gap captured between two glass panes of 3 to 6mm each, for a total thickness of 6 to 12mm. What is the catch, we hear you say? Well, there isn’t one. As approved installers of Fineo vacuum insulated glass we can assure you that this premium glass offers the same thermal performance as triple glazing, while being 3 to 4 times thinner. Heat stays inside your home, making it more comfortable without increasing your heating bill.

Plus, Fineo glazing boasts:

  • A U-value of 0.7 W/(m²K)
  • Better soundproofing
  • Better light transmission
  • 100% recyclability
  • A 15-year warranty.

On top of all that, the vacuum insulated glass is suitable for restoration, renovation, and new construction projects. To date, we have not had a planning application for Fineo glass declined by any planning authority we have submitted requests to (including listed properties).

It is important to note however, that vacuum insulated glass is not a cheaper glazing option. As with most things in life, you will get what you pay for with this glass – it is a premium glazing option.

If you are looking to restore or replace your windows with energy efficient Fineo glazing, we’d love to chat with you.