What should be used for patching if the same SFRM as the original application is not available?

Using the manufacturer's recommended patching material is essential when the original spray-applied fire-resistive material (SFRM) is not available. This choice is based on the need to ensure compatibility in terms of performance, adhesion properties, and overall fire-resistance characteristics. The manufacturer's specifications provide the necessary guidelines to maintain the integrity and effectiveness of the fire-resistive coating, which is crucial for safety and compliance with building codes.

If an alternative product is chosen that does not meet the original material's standards, it could lead to inadequate fire protection, compromising the safety measures intended by the fire-resistive application. Therefore, selecting a patching material that adheres to the manufacturer's guidelines ensures that the fire-resistance rating and structural integrity are preserved.