What is a disadvantage of cementitious fireproofing?

Cementitious fireproofing is known for its robust properties, but one of its primary disadvantages is that it can be heavy and may add significant dead load to the structural elements it is applied to. This added weight can affect the overall design and structural integrity of a building, potentially requiring additional reinforcement or consideration during the design phase.

While lightweight and ease of application are advantages associated with some fireproofing materials, cementitious options typically do not fall into this category. Options regarding ease of removal and resistance to chemical damage also highlight positive attributes of other materials, but they do not apply to the inherent properties of cementitious fireproofing, focusing instead on its potential challenges. The weight factor stands out as a noteworthy concern, impacting both construction logistics and long-term structural considerations.