What Is Double Glazing Or Insulated Glazing ?

Insulated glazing unit (commonly referred to as Double Glazing in the UK) is a piece of glazing consisting of two or more layers (lites) of glazing separated by a spacer along the edge and sealed to create a hermetically sealed air space between the layers. This provides better heat and sound insulation than standard single-glazed windows.

Insulating windows are usually double paned and are also referred to as "double glazing" but windows with triple panes or more, "triple glazing" are sometimes seen in very cold areas. Insulated glazing is framed in a sash or frame as if it were a very thick piece of glass.

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