Window glazing typically refers to the glass panes inside a window, but it also describes the process of installing window glazing compound, or the putty that holds the glass in place. Windows have single, double, or triple glazing, with each additional layer improving energy efficiency.

Window glazing is the glass in windows and the process of installing it. There are several types of glazing, including single, double, and triple-pane options. Glazing improves energy efficiency by reducing heat loss and noise from outside.

Window glazing is a broad term that refers to a pane of glass inside a window; it’s not a type or brand of glass. Some windows may even use other materials, like plexiglass. Manufacturers mount the glaze in the frame using glazing putty, and people often call a single glaze in the frame a pane.

Glazing refers to the glass inside the window frame. Depending on the glazing type, your windows may be better at reducing heat loss or improving noise insulation. Single glazed windows simply have one pane of glass.