This composite fiberboard system is ideal for roofing applications, particularly in regions prone to fire. It is UL 790 Class A and ASTM E 108 Class A certified for fire resistance, and UL 723 and ASTM E 84 certified for flame spread and smoke. It is also water resistant, in compliance with ASTM C208 for 2-hour water absorption.
The patent application is no longer pending, but there are improvements and know-how that could support commercialization.
US PATENT APPLICATION (lapsed) 12/080,905