An insulating glazing includes a first a second pane, a spacer between the first and second pane that is fixedly connected to the first and second pane in a water-vapor-tight manner in each case, which spacer has two parallel pane contact walls, an outer wall, and a glazing interior wall and an interior, and a water-tight sealant strip running around the outer wall between the first and second pane. A pressure-equalizing element is inserted into the sealant strip and the spacer, which pressure-equalizing element is open to the surrounding atmosphere and to the interior of the spacer or to the glazing interior between the first and the second pane and is implemented such that it provides a gas connection having a pressure-equalizing function between the atmosphere and the interior of the spacer or the glazing interior which gas connection is temporally limited due to aging and/or atmospheric influences.