What is one of the greatest challenges during the overhaul phase?

During the overhaul phase, one of the greatest challenges is opening void spaces where fire might reignite. This is crucial because even if a fire appears to be extinguished, hidden pockets of heat or smoldering embers can remain in void spaces, such as walls, ceilings, and floor cavities. If these areas are not properly checked and opened, there is a risk that the fire could reignite, potentially endangering both firefighters and property.

Effectively identifying and accessing these void spaces is essential for ensuring that all smoldering materials are cooled and that the fire is completely out before leaving the scene. This step not only enhances safety but also aids in preventing further damage. Therefore, firefighters must be diligent in searching for and opening these areas during the overhaul process to ensure total fire suppression and safety.