Method for producing a roll of sealing tape of soft, compressible foam having at least one barrier layer extending in the radial direction and arranged axially between two layers of foam, comprising the following steps: - providing a foam web of a soft foam; - applying a first barrier layer to a first surface of the foam web; - introducing at least one first cut into the first surface of the foam web in a longitudinal direction of the foam web and introducing at least one second cut into a second surface of the foam web that is opposite the first surface in a longitudinal direction of the foam web, as well as in a manner offset in a transverse direction of the foam web with respect to the at least one first cut, so as to form parallel strips of sealing tape, a connecting portion remaining between two strips of sealing tape that adjoin one another; - folding over the strips of sealing tape in the region of the connecting portions so as to produce a foam barrier-layer sheet, such that sub-portions of the first surface, each of which adjoins a common connecting portion, lie opposite one another and sub-portions of the second surface, each of which adjoins a common connecting portion, lie opposite one another; and - (i) winding up the foam barrier-layer sheet so as to form a roll of sealing tape having at least one barrier layer extending in the radial direction, or - (ii) winding up the foam barrier-layer sheet so as to form an intermediate roll and severing the intermediate roll at one or more points in the axial direction, in order to produce a plurality of rolls of sealing tape that are less wide than the intermediate roll, each having at least one barrier layer extending in the radial direction, or - (iii) introducing at least one cut into the foam barrier-layer sheet in a longitudinal direction of the foam barrier-layer sheet so as to form foam barrier-layer strips and winding up the foam barrier-layer strips so as to form individual rolls of sealing tape each having at least one barrier layer extending in the radial direction. - providing a foam web of a soft foam; - applying a first barrier layer to a first surface of the foam web; - introducing at least one first cut into the first surface of the foam web in a longitudinal direction of the foam web and introducing at least one second cut into a second surface of the foam web that is opposite the first surface in a longitudinal direction of the foam web, as well as in a manner offset in a transverse direction of the foam web with respect to the at least one first cut, so as to form parallel strips of sealing tape, a connecting portion remaining between two strips of sealing tape that adjoin one another; - folding over the strips of sealing tape in the region of the connecting portions so as to produce a foam barrier-layer sheet, such that sub-portions of the first surface, each of which adjoins a common connecting portion, lie opposite one another and sub-portions of the second surface, each of which adjoins a common connecting portion, lie opposite one another; and - (i) winding up the foam barrier-layer sheet so as to form a roll of sealing tape having at least one barrier layer extending in the radial direction, or - (ii) winding up the foam barrier-layer sheet so as to form an intermediate roll and severing the intermediate roll at one or more points in the axial direction, in order to produce a plurality of rolls of sealing tape that are less wide than the intermediate roll, each having at least one barrier layer extending in the radial direction, or - (iii) introducing at least one cut into the foam barrier-layer sheet in a longitudinal direction of the foam barrier-layer sheet so as to form foam barrier-layer strips and winding up the foam barrier-layer strips so as to form individual rolls of sealing tape each having at least one barrier layer extending in the radial direction.