Which of the following are signs of roof structural damage?

The presence of sagging, visible cracks, or water stains in the interior is a clear indicator of potential structural damage to a roof. These signs often suggest underlying issues that can compromise the integrity of the roofing system. Sagging may occur due to water accumulation or weakened support structures, indicating significant problems that need immediate attention. Visible cracks can result from stress or movement within the roof structure, while water stains often signal leaks that could lead to further deterioration if not addressed.

While slight discoloration and inconsistent roof color may suggest wear or aging, they do not directly imply structural damage. These issues are more cosmetic and do not generally affect the roof's overall stability or strength. Choosing the answer that highlights the most serious indicators of structural problems is essential for prioritizing building safety and maintenance.