What is the maximum allowable relative humidity when placing TFIFRM?

The maximum allowable relative humidity when placing TFIFRM (a type of spray-applied fire-resistive material) is 75%. This limit is significant because moisture content can adversely affect the adhesion and performance of the fireproofing material. High humidity levels can lead to issues such as improper curing, which may compromise the fire-resistive properties of the application. Maintaining a relative humidity at or below this threshold helps ensure that the material adheres properly and achieves its intended performance in fire resistance. This aligns with industry standards and manufacturer guidelines to optimize the effectiveness and longevity of the fireproofing.