Malcolm Lewis Windows are committed to supplying energy efficient windows.

Triple glazing is unsurpassed in terms of energy and acoustic performance when compared to standard glazing options, approximately 60% more thermally efficient than standard C-rated double glazed windows and 40% more than standard A-rated double glazing.

Increasingly popular, Triple Glazed windows are constructed using a third or ‘triple’ pane of glass, this additional pane of glass results in the window featuring an additional cavity, which are filled with Argon Gas.

We can replace your windows with brand new energy efficient windows in a range of different styles to suit your home, visit our Windows Showroom in Oswestry to find out more.


  • It will save you money on your heating bills each year
  • It reduces noise
  • It reduces your carbon footprint