When using a ladder to access a roof, how many rungs should show above the roofline?

When accessing a roof with a ladder, it's important for safety and stability that a specific number of rungs are visible above the roofline. The recommendation of having five rungs show above the roofline establishes a secure point of support for firefighters as they transition from the ladder to the roof. This ensures they have enough ladder height to safely step off onto the roof without risking losing their footing or balance.

Having additional rungs visible provides enough height to clear the edge of the roof while maintaining a solid base and preventing the ladder from slipping. It is a crucial practice to ensure stability as well as to allow emergency personnel to quickly and safely navigate onto the roof. This protocol helps to mitigate the risks associated with working at heights, ensuring both safety and efficiency in emergency response situations.