Macaulay is the chief financial officer and senior vice president of corporate strategy at Marvin Windows and Doors and Breitzman has served as CEO and president of Bedford Technology.
McWeeney will contribute to the advancement of the metal building industry on the board as well as represent Cornerstone Building Brands and its brands.
Andy Centauro of Elmer W. Davis Inc. and John Kenney of Cotney Attorneys & Consultants were elected to fill two openings on the RT3's board of directors.