As everyone knows building envelopes have come under great security and for good reason, lives depend on it. Concrete has traditionally served as a non-combustible material. SlenderWall’s combination of a precast concrete facade with an insulated interior galvanized steel stud wall has passed the latest E-119-18a & E2226-15b ASTM tests. The SlenderWall composite cladding panel contained the fire and held its structural integrity for the specified 1 hour time period of resistance. SlenderWall’s closed-cell foam insulation is NFPA 285 rated and engineered fire stops are also integrated during installation. SlenderWall goes to great efforts with testing and research to provide a solution that creates a safer environment for building occupants.