Safecoat TFI is a single component latex, intumescent fire retardant coating ideally suited for exposed interior structural steel where a 2-1/2 hour fire resistance rating is required. It is ideal for interior steel columns, trusses, beams and other exposed structural members. It limits thermal penetration by expanding to many times the original dry film thickness when exposed to heat. This expanded material forms a char which insulates the substrate against heat, and reduces available oxygen to the surface. It provides a 2-1/2 hour fire rating as tested under ASTM E-119-08A, NFPA 251 “Small Scale Test” and CAN/ULC4-S101 “No Load”.