Common Causes for Foundation Issues

The soil beneath your foundation has a lot on its plate. On average, most houses weigh between 80,000 and 160,000 lbs. In the rainy south and eastern seaboard, heavy moisture content in the soil can cause it to fluctuate in size and cause movement below the surface. Over time, the weight plus the moisture composition weakens the soil, causing a foundation to sink.  

Since the soil underneath your foundation won’t move around and absorb water at a uniform rate, differential settlement is a common source of foundation issues. Differential settlement is when certain parts of your home sink and settle faster than the rest. That’s where you’ll begin to notice major exterior cracks and cracks in your drywall.     

Clay soil, prominent in Georgia and South Carolina, is classified as an expansive soil. This means that when it rains, the soil soaks up water and expands in size. When the soil dries out, during a long period of dry weather, it will shrink. This constant movement causes major issues for your foundation. Expansion can cause basement walls to bow, or slab foundations to heave. When the soil dries, it creates air pockets, causing your foundation to crack and sink down.  

Clay soil is the source of many foundation issues near you, but there are things you can do to lessen the damage. Ensure your yard is positively graded, and that your gutters are in shape. If you’re already dealing with foundation damage, call your local expert for a free inspection. They may suggest a drainage system, or various structural underpinning solutions like pier systems of wall braces.