What is a common sign of structural instability in a building?

Deteriorated mortar is a significant indicator of structural instability in a building. Mortar is a crucial component that binds bricks and masonry units together, and when it begins to deteriorate, it can compromise the overall integrity of the structure. This deterioration might stem from various factors such as water infiltration, freeze-thaw cycles, or the natural aging process, which can lead to cracks, separation between bricks, or even complete failure of masonry walls.

Recognizing signs like crumbling, cracking, or flaking mortar is essential for assessing the health of the structure. It indicates that there might be additional hidden issues, such as shifting foundations or excessive load on the walls, that require immediate attention to ensure safety.

In contrast, newly painted surfaces, decorative wall hangings, and fresh landscaping typically do not relate to structural stability. These elements may enhance the aesthetic appearance of a building but they do not provide any direct information regarding its foundational integrity or the condition of load-bearing components.