What is the maximum allowable relative humidity when placing TFIFRM?

The maximum allowable relative humidity for placing TFIFRM (Thin-Film Intumescent Fire-Resistive Material) is 75%. This standard is established to ensure the effectiveness and durability of the fireproofing material. High humidity can adversely affect the adhesion and curing process, leading to compromised integrity and performance once the material is applied.

Maintaining the correct environmental conditions, including relative humidity, is crucial in construction and fireproofing practices to prevent issues such as improper curing, which can in turn impact the overall structural integrity. The specific threshold of 75% allows for some moisture in the environment while still ensuring that the fireproofing material will bond properly and perform as intended. Hence, this standard is a vital consideration in achieving effective fire protection in structural applications.