Secondary window glazing is the addition of high quality acrylic PLEXIGLAS sheet to your existing single or double glazing windows. It is simple to install and is held in place using our magnetic tape system.

It traps a layer of still air between your existing window and the secondary glazing sheet. It gives you all the benefits of double glazing for a fraction of the cost of new double glazing windows.

It's a great option for people who want to retrofit their perfectly good windows.

Adds real value to your home
Helps you save on energy bills
Functions like new double glazing windows
Glass like acrylic is 17 times stronger than glass
Plexiglas has a 30 year guarantee of not yellowing
Reduces your heating and cooling energy consumption
Suitable for interior & exterior use

It doesn’t affect the window’s functionality. Whether it’s a sliding, fixed or hinged window, you can still open and close them as you did before.

4mm Clear Secondary Window Glazing