To fill insulating glass with a gas other than air, between the spacer (5) and the glass pane (3), an open space (15) for the entry of gas into the interior (7) of the insulating glass is ensured in that in the region of the cement strand (11), which is applied to the inside of the glass pane (3) or a side surface of the spacer (5), there are distance elements, for example in the form of projections (13) of the cement strand (11). These projections (13) are pressed into the cement strand (11) when the packet of panes consisting of (at least) two glass panes (3) with a spacer (5) inserted in between is being pressed to form an insulating glass blank (1), whereupon the insulating glass blank (1) is supplied to a sealing station for sealing.