An device for simultaneous application of elastoplastic spacer tapes to two glass panes with identical outline shape and identical dimensions has two application heads (107) that can be adjusted essentially vertically up and down on linear axles (105). The application heads (107) are moved synchronously, likewise the two glass panes by the holding devices that are assigned to them and that move the glass panes in a direction that is perpendicular to the direction of motion of the application heads (107). Thus, it is sufficient to measure a single glass pane of a triple insulating glass element, and both application panes of the insulating glass element can be covered at the same time with spacer tapes, so that time is saved, and the two application panes can be assembled with the cover pane in a shorter time interval into an insulating glass element with three panes.