What is the minimum substrate temperature required for SFRM application?

The minimum substrate temperature required for Spray-Applied Fire-Resistive Material (SFRM) application is critical to ensure proper adhesion and performance of the fireproofing material. At temperatures below 40 degrees Fahrenheit, there is a higher risk that the material may not bond effectively to the substrate, potentially leading to issues such as delamination or reduced fire-resistive performance.

Applying SFRM at or above this temperature helps to ensure that the material will properly adhere to the surface and achieve the designed fire protection integrity. Moreover, lower temperatures can lead to increased moisture retention on the substrate, which can negatively impact the curing and drying processes of the material.

In addition to the adhesion and performance issues, applying SFRM in too low of temperatures can also affect the application characteristics of the product itself, such as viscosity and spray consistency. Hence, maintaining the minimum substrate temperature of 40 degrees Fahrenheit is essential for the successful application of SFRM.