Secondary Glazing

Secondary glazing is a pane of glass fitted in a separate frame on the inside of your existing windows. Double glazing is two panes of glass with the space in between filled with argon gas and vacuum-sealed inside your actual window frame.

The cost of secondary glazing is determined by the size of the window opening you have and how easy it is to install. There are kits that you can buy relatively cheaply which have standard sizes. However, most period homes have odd shapes and lines around window openings, making standard sizes difficult to fit. The best secondary glazing is often bespoke because you get the perfect fit.

You don’t usually need planning permission for secondary glazing, even on listed buildings and those in conservation areas. The main advantage of secondary glazing is that it doesn’t change the look or fabric of the building, so you retain period features outside and inside. If for any reason you do require planning permission, don’t worry, we’ll take care of everything for you.

Secondary glazing can dramatically reduce the chance of condensation forming your windows. Condensation is formed when warm moist air meets a cold surface. Secondary glazing sits behind windows that are exposed to colder temperatures, creating a barrier between them and the rest of your home. This minimises the chances of condensation forming and keeps the warm air inside.

To clean your secondary glazing all you need is warm soapy water and a cloth to wipe the frame and glass. To clean the inside of side-hinged secondary windows, open them fully and clean them as you would the outside. If your windows open on a horizontal slider, then follow the instructions to take them out of the sliders and clean the panels individually. Secondary windows on vertical sliders can be tilted open to allow for easy cleaning.