In the past decade, the polyiso industry created and shipped enough board feet of insulation that it would rise to 14.7 miles into the sky if installed to cover a football field.

Roofers can trust this coverboard for attached single-ply and adhered single-ply roofing systems thanks to its closed-cell polyisocyanurate foam core.

Designed for direct application to combustible decks. 

National Gypsum has launched DEXcellTM: a new family of high-performance roof boards for commercial roofing systems.