What can excessive deck deflection in a roofing system indicate?

Excessive deck deflection in a roofing system is a significant concern as it often indicates potential structural failure. Deflection occurs when the materials used in the roof's structure bend or warp under weight or stress, which can compromise the integrity of the roofing system. If the deck is sagging or bending too much, it may not be able to support the weight of roofing materials, including the potential accumulation of snow, ice, or water. This situation not only poses risks to the roof itself but can also endanger the entire building's structural integrity. Regular assessment of deck deflection is crucial for ensuring safety and maintaining the functionality of the roofing system.