Single glazing refers to a window or door that consists of a single pane of glass. This type of glazing is commonly found in older buildings and is less energy-efficient compared to modern alternatives. Single glazing allows heat to escape more easily, which can lead to higher energy costs for heating and cooling. Due to its limited insulation properties, single glazing can also result in condensation and noise issues. Many homeowners are now opting for double glazing or triple glazing to improve energy efficiency and comfort. Upgrading to these options can significantly reduce energy bills and enhance overall living conditions.