meg
Registered User
We have a false floor over exposed large timber frame beams. The false floor consists of a hardwood floor, 3/4" sheathing, 2 x 4 cavity with acoustical batt, 3/4" sheathing and 5/16" tongue and groove below. Has anyone ever used table 722.6.2? We need to modify the floor to make it a 1 hour fire rated but want to know where it rates. Does anyone know what that fire rating would be and have any suggestions to get it to one hour?