Understanding foundation soils is the key to understanding foundation repair problems. The type of soil your home sits on plays a huge role in the risk of foundation damage you have. Sand and sandy loam soils allow water to pass through, making them more stable and less likely to expand and cause foundation problems. On the other hand, clay soils absorb water, expand, and put pressure on the foundation. This pressure can lead to floor cracks, wall cracks, and other foundation problems.
There are several layers of soil under your foundation, including bedrock, untouched “virgin” soils, and the active zone, which is where foundation problems can happen. The active zone is the area that is affected by moisture and climate change, causing soil to expand and contract. These soil movements can severely impact your foundation, causing bowing walls, wall and floor cracks, and lessening stability. Depending on where you live, the active zone can be a few feet below grade or as much as 30 feet below the surface. Our foundation repair services can solve a wide variety of foundation soil problems.