Spray-applied Fire Resistive Material (SFRM) is the most common way to provide fireproofing protection because this method is quick, highly effective and inexpensive. SFRM is a cementitious mixture that is uniformly applied directly onto steel surfaces via a high-pressured spraying process. It is an excellent choice for concealed environments and where a more durable fireproofing is required. SFRM has a rating of up to four (4) hours for assemblies, beams, joists, columns, and walls and partitions. If SFRM has been damaged or removed, it may be repaired by spraying or hand troweling freshly mixed product to the affected areas.