What can excessive moisture in wall systems lead to?

Excessive moisture in wall systems can lead to structural weakness due to a variety of factors associated with water intrusion and accumulation. When moisture penetrates the walls, it can compromise the materials involved, such as wood framing, drywall, and insulation. For instance, wood can begin to rot or develop mold, weakening its structural integrity. Additionally, moisture can lead to the breakdown of insulation materials, reducing their effectiveness. This degradation can ultimately compromise the overall structural stability of a building, making it crucial for home inspectors to assess and address any moisture issues during an inspection.

In contrast, increased durability or enhanced thermal resistance are not outcomes associated with moisture intrusion; in fact, the opposite is true. Excess moisture typically results in deterioration rather than improvement of a structure's integrity. Similarly, while sound insulation may be affected by moisture, it does not lead to improved sound insulation, as wet insulation can become less effective at muffling sound.