Do you have a UL design number for Monierlifetile for a two hour roof/ceiling assembly? The roof frame is steel (W12X22) with sprayed on fireproofing.
MonierLifetile does not have a UL design number for one or two hour fire ratings. All of our tiles are rated as Class A assemblies based on tests conducted in accordance with UBC Standard 15-2 which is essentially identical to UL 790, ASTM E-108 and NFPA No. 256. These tests are conducted under worst-case scenarios utilizing tiles installed onto wood decks of plywood or OSB so it would be logical to assume that they would meet the requirements of your project.
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