is cement board fire rated
CemDeck is a non-combustible structural fiber cement board, designed and manufactured for use in fire-rated decking assemblies. CemDeck is non-combustible per ASTM E136, with up to 2 hour fire-rated floor assemblies. This specialist cement board also provides excellent load bearing performance, with UL listed floor assemblies. An interlocking tongue-and-groove edge ensures solid joining and uniform loading across supports.