National Gypsum Company is the exclusive service provider of reliable, high-performance building products manufactured by its affiliate companies and marketed under the Gold Bond®, ProForm®, and PermaBASE® brands. The National Gypsum name has been synonymous with high-quality, innovative products and exceptional customer service since 1925. We are Building Products for a Better Future® — one project at a time.

DEXcell® Roof Boards are trusted by those who live by the specs – roofing consultants, architects and professionals who demand performance. Designed for the entire spectrum of commercial roofing applications, DEXcell® Roof Boards strengthen commercial roof assemblies from the inside out.

With a nationwide network of manufacturing plants and more than 30 system partners, DEXcell ensures you have access to four versatile roof board options, trusted by every leading low-slope roofing system across the country. The DEXcell commitment to exceptional quality is backed by rigorous third-party testing, advanced fiberglass mat technology and continuous research and development. DEXcell’s sealed surface technology makes installation easier, while our products consistently meet the industry’s highest standards.

From specification to installation, our dedicated team — boasting decades of building materials expertise — stands ready to support you. With award-winning customer service, a robust technical rep network, and comprehensive resources, DEXcell is your partner for every phase of the project.

DEXcell Roof Boards: Engineered to strengthen every system with nationwide access, exceptional quality and unparalleled support.