A method for producing a sealing tape roll of flexible, compressed foam with at least one barrier layer extending in a radial direction thereof, the at least one barrier layer arranged axially between two layers of foam, comprises assembling and bonding of at least one first foam strip, which is provided on at least one of its side surfaces with a film strip, an adhesive tape strip, or an adhesive liquid medium, to at least one second foam strip in such a way that a foam-barrier layer web is obtained, in which at least one barrier layer originating from the film strip, the adhesive tape strip, or the adhesive liquid medium is arranged between adjacent foam strips. The foam-barrier layer web is then wound up into a sealing tape roll.