A curtain mounting system for creating a dust barrier that includes a curtain and a mounting system. The mounting system is made up of multiple support assemblies with each assembly having a holding member for attaching and supporting the curtain to a support structure such as wall or ceiling. The support assembly also has an elastic member coupled to the holding member and is also attached to the curtain. The elastic member is configured to suspend additional portions of the curtain creating an overlapping fold in the curtain. The curtain will lengthen when it is tugged on due to the curtain fold and will return back to its original length once the tugging has subsided due to the nature and placement of the elastic member.