What is the effect of relative humidity exceeding the allowable limit during the drying of SFRM?

When relative humidity exceeds the allowable limit during the drying of Spray-Applied Fire-Resistive Material (SFRM), it can significantly impact the density measurements of the material. High humidity levels can hinder the evaporation of moisture from the SFRM, preventing it from drying properly. This excess moisture can cause the material to retain water, resulting in inaccurate density readings. Accurate density measurements are crucial for ensuring that the fireproofing material performs effectively in its intended application. If the density is measured while the material is still saturated, it may appear heavier than it truly is when dry, leading to miscalculations in the amount of product required and the overall structural integrity of the application. Therefore, maintaining relative humidity within acceptable limits during the drying process is essential for achieving reliable results.