ROSEMONT, Ill.—KARNAK Corp., Clark, N.J., has joined The Roofing Industry Alliance for Progress at the Regent level. Regent membership is reserved for those who commit $100,000 to the Alliance during a three- to five-year period. KARNAK’s commitment entitles it to participate in the project task forces established to guide the Alliance's agenda and to attend the semiannual meetings of the full Alliance.