Contact Us Employee Portal About Us Products Customer Solutions Investors Careers Your browser does not support the video tag. NCI Building Systems and Ply Gem Building Products have merged together to become Cornerstone Building Brands At Cornerstone Building Brands we provide our residential and commercial customers with a comprehensive portfolio of products and solutions, when and where they need it. As the largest manufacturer of exterior building products, with an expansive national footprint, we are dedicated to efficiently and effectively meeting the needs of customers and communities. The Cornerstone Building Brands' relentless focus on excellence combined with our ongoing commitment to innovation and R&D has driven us to become the #1 manufacturer of windows, vinyl siding, insulated metal panels, metal roofing and wall systems and metal accessories. We believe every building we create, and every part of that building, positively contributes to communities where people live, work and play. LEARN MORE Residential Solutions From windows and siding to shingles and shutters, the Ply Gem Building Products division of Cornerstone Building Brands offers a comprehensive range of best-in-class products and solutions for the residential new construction and repair and remodel markets. VIEW PRODUCTS Commercial Solutions As leaders in the commercial construction industry, Cornerstone Building Brands is the #1 manufacturer of insulated metal panels, metal roofing and wall systems and metal accessories. VIEW PRODUCTS Latest news and updates April 11, 2019 NCI Building Systems and Ply Gem Building Products Create Cornerstone Building Brands Following Merger CARY, NC, April 11, 2019 – NCI Building Systems, Inc. (NYSE: NCS) (“NCI” or the “Company”), which recently merged with Ply Gem Building Products, announces it will officially operate as Cornerstone Building Brands and trade under the ticker symbol “CNR” on the New York Stock Exchange effective May 24, 2019. The new name represents the Company’s unified commitment to business transformation that will drive future growth and effectively serve customers and communities across North America. Read article February 20, 2019 NCI Building Systems Announces Closing of Ply Gem’s Acquisition of Environmental Materials, LLC CARY, NC, February 20, 2019 – NCI Building Systems, Inc. (NYSE: NCS) (“NCI” or the “Company”) announced today that NCI’s Ply Gem business has closed on the previously announced acquisition of Environmental Materials, LLC (“Environmental Stoneworks”). Read article February 11, 2019 NCI Building Systems Announces Operational Update Conference Call CARY, NC, February 11, 2019 – NCI Building Systems, Inc. (NYSE: NCS) (“NCI” or the “Company”) announced today that it will be hosting an operational update call on February 14, 2019 at 9:00am Eastern Time. Read article VIEW MORE ARTICLES Stay connected with us The latest product, projects and Cornerstone Building Brands news delivered to your inbox SIGN UP Privacy Policy Legal Careers Contact Us © 2019 Cornerstone Building Brands