Common Causes of Sagging Crawl Spaces
The causes of sagging crawl spaces can vary, but some of the most prevalent factors are poor drainage, expansive soil, problems with existing house jacks, inadequate support piers, and wood rot on the wooden structures in the crawl space.
Poor drainage is often a contributing factor in the development of sagging crawl spaces. In these instances, water can accumulate in the crawl space, leading to soil erosion and weakening supporting structures. Excessive moisture can also lead to mold formation, further exacerbating the issue.
Clay-rich expansive soil can also contribute to sagging crawl spaces. When expansive soil becomes saturated with water, it expands, causing the foundation to shift and settle unevenly. This can lead to structural damage and may impact the home’s overall integrity.
Problems with Existing House Jacks
Over time, house jacks can deteriorate if they aren’t protected from corrosion and become less effective at supporting the weight of the home. This can cause the foundation to sag or shift, leading to many problems.
Not Enough Support
Crawl space support posts are designed to support the weight of the home–but if there are not enough of them or they are improperly placed, then the crawl space can become unstable and unsafe.
In time, wooden structures can become weakened by water damage, leading to wood rot and other issues. The result is structural instability and the risk of collapse.