How can home inspectors verify the functionality of gutters?

Verifying the functionality of gutters primarily involves assessing how effectively they manage water flow. Observing water flow during a rainstorm is the most direct way to determine whether gutters are functioning properly. This method allows inspectors to see real-time water management and identify any points where water may overflow or drain improperly. If the gutters are clogged or misaligned, the water flow will reveal these issues clearly, making it a practical and effective assessment technique.

Other methods, such as inspecting for visible rust or examining gutter material, may provide insights into the overall condition or potential lifespan of the gutters but do not directly verify functionality. Testing with a hose can simulate water flow; however, it might not replicate the volume or dynamics of an actual rainstorm, potentially missing issues that would only present themselves under real conditions. Therefore, observing water flow during a rainstorm stands out as the most effective approach for verifying gutter functionality.