How many inches should a ladder extend beyond the top level of a roof or flat surface?

A ladder should extend at least 36 inches beyond the top level of a roof or flat surface to ensure safe access and egress. This extension provides an adequate handhold for individuals climbing on or off the roof, promoting stability and reducing the risk of falls. The extra height helps secure the ladder and gives users a safe place to grasp as they transition between the ladder and the roof edge. This practice is in line with safety regulations and recommendations, ensuring that workers can manage safe movement on and off elevated surfaces. The importance of this extension cannot be overstated, as it is a critical component of ladder safety.