a solid barrier , sound partition and privacy fence system including a plurality of interconnected fence panels whose ends are adapted to fit to pre - existing fence posts . the ends of the fence panels include attachment structure for releasably securing adjacent fence panels to one another around an existing fence post . the privacy fence system provides for installing a privacy fence that reuses existing cement anchored fence posts . the attachment structure may comprise either an interlocking fastening device or a threaded fastening device . the privacy fence may also include an optional fence post cap that is attached to the top portion of the existing poles . each fence panel is constructed of a lightweight , one piece , molded material .