Double-glazing refers to a window construction technique that involves two panes of glass separated by a space filled with air or gas. This design helps to improve insulation, reducing heat loss in winter and keeping homes cooler in summer. It also minimizes noise from outside, making living spaces more comfortable. The space between the glass panes acts as a barrier, slowing down the transfer of heat and sound. Double-glazing is commonly used in residential and commercial buildings, contributing to energy efficiency and lower heating costs. Many homeowners choose this option for its benefits in comfort and energy savings.