Method for producing a roll of sealing tape, having the following steps: providing a foam barrier-layer sheet, which comprises a plurality of foam strips arranged next to one another in a transverse direction and at least one barrier layer, wherein a barrier layer is arranged between each two mutually adjacent foam strips, wherein the foam barrier-layer sheet has a top side, a bottom side, two side flanks (12, 14), which connect the top side and the bottom side, and a longitudinal direction, which is aligned parallel to the bottom side of the foam barrier-layer sheet and transversely to the transverse direction; applying a cover layer to the top side and/or the bottom side of the foam barrier-layer sheet so as to form a coated foam barrier-layer sheet; characterized by: severing the cover layer in the longitudinal direction in the region of at least two foam strips and at a distance from each barrier layer adjoining these foam strips and thereby forming sub-portions of the cover layer, wherein a sub-portion of the cover layer at least partially overlaps at least two mutually adjacent foam strips; and forming a roll of sealing tape by (i) winding up the coated foam barrier-layer sheet around an axis of rotation so as to form a roll of sealing tape; or (ii) winding up the coated foam barrier-layer sheet around an axis of rotation so as to form an intermediate roll and severing the intermediate roll at one or more points in an axial direction, in order to create a plurality of rolls of sealing tape that are less wide than the intermediate roll; or (iii) severing the coated foam barrier-layer sheet in the longitudinal direction so as to form foam barrier-layer strips, and winding up the foam barrier-layer strips around an axis of rotation so as to form individual rolls of sealing tape. providing a foam barrier-layer sheet, which comprises a plurality of foam strips arranged next to one another in a transverse direction and at least one barrier layer, wherein a barrier layer is arranged between each two mutually adjacent foam strips, wherein the foam barrier-layer sheet has a top side, a bottom side, two side flanks (12, 14), which connect the top side and the bottom side, and a longitudinal direction, which is aligned parallel to the bottom side of the foam barrier-layer sheet and transversely to the transverse direction; applying a cover layer to the top side and/or the bottom side of the foam barrier-layer sheet so as to form a coated foam barrier-layer sheet; characterized by: severing the cover layer in the longitudinal direction in the region of at least two foam strips and at a distance from each barrier layer adjoining these foam strips and thereby forming sub-portions of the cover layer, wherein a sub-portion of the cover layer at least partially overlaps at least two mutually adjacent foam strips; and forming a roll of sealing tape by (i) winding up the coated foam barrier-layer sheet around an axis of rotation so as to form a roll of sealing tape; or (ii) winding up the coated foam barrier-layer sheet around an axis of rotation so as to form an intermediate roll and severing the intermediate roll at one or more points in an axial direction, in order to create a plurality of rolls of sealing tape that are less wide than the intermediate roll; or (iii) severing the coated foam barrier-layer sheet in the longitudinal direction so as to form foam barrier-layer strips, and winding up the foam barrier-layer strips around an axis of rotation so as to form individual rolls of sealing tape. severing the cover layer in the longitudinal direction in the region of at least two foam strips and at a distance from each barrier layer adjoining these foam strips and thereby forming sub-portions of the cover layer, wherein a sub-portion of the cover layer at least partially overlaps at least two mutually adjacent foam strips; and forming a roll of sealing tape by (i) winding up the coated foam barrier-layer sheet around an axis of rotation so as to form a roll of sealing tape; or (ii) winding up the coated foam barrier-layer sheet around an axis of rotation so as to form an intermediate roll and severing the intermediate roll at one or more points in an axial direction, in order to create a plurality of rolls of sealing tape that are less wide than the intermediate roll; or (iii) severing the coated foam barrier-layer sheet in the longitudinal direction so as to form foam barrier-layer strips, and winding up the foam barrier-layer strips around an axis of rotation so as to form individual rolls of sealing tape. (i) winding up the coated foam barrier-layer sheet around an axis of rotation so as to form a roll of sealing tape; or (ii) winding up the coated foam barrier-layer sheet around an axis of rotation so as to form an intermediate roll and severing the intermediate roll at one or more points in an axial direction, in order to create a plurality of rolls of sealing tape that are less wide than the intermediate roll; or (iii) severing the coated foam barrier-layer sheet in the longitudinal direction so as to form foam barrier-layer strips, and winding up the foam barrier-layer strips around an axis of rotation so as to form individual rolls of sealing tape.