John Buckley has served as President, Siding & Accessories for Cornerstone Building Brands, the merged NCI Building Systems and Ply Gem Building Products company, since November 2018. Before the merger, Mr. Buckley served as the President of the Ply Gem U.S. Siding Business Unit since June 2012. Prior to this appointment, Mr. Buckley was the Senior Vice President of Sales for this division after joining the team in 1999. Before Ply Gem, he worked for CertainTeed, holding a variety of sales leadership positions from 1991 until 1999. Mr. Buckley currently serves as the Chairman of the VSI (Vinyl Siding Institute) Board of Directors and Chairman of the VSI Steering Committee. He earned his B.A in communications from the University of Michigan, and an M.S.A. from Madonna University.