What issue is indicated by a gap between the soffit and exterior wall that is wider in the midpoint?

A gap between the soffit and exterior wall that is wider at the midpoint can indicate that the ceiling joists are improperly tied. When ceiling joists are not adequately tied together or secured, they can sag or shift over time, leading to deformation in the roof structure. This sagging can create wider gaps at points of stress, specifically in the midsection, where the weight distribution is typically more pronounced.

The integrity of the ceiling joists is crucial, as they help to maintain the structural stability of the roof system and prevent problems such as sagging or misalignment. Properly tied ceiling joists ensure that the load is evenly distributed, which minimizes the risk of gaps forming between structural elements, such as the soffit and wall. It is essential to regularly inspect these areas for signs of movement or instability to ensure the structure's integrity remains intact.