Every late summer, the calls spike: new cracks, doors that suddenly stick, gaps at the trim. It is not your imagination, it is the clay. Here is what is happening under your house and what to do about it.
Call (256) 342-9622Tennessee Valley red clay is expansive soil: it swells when wet and shrinks hard when it dries. By August, after weeks of 95 degree days, the top several feet of clay have given up their moisture and pulled away from foundations, and the soil that carried your house in April is simply smaller than it was. Parts of the foundation lose support, the structure flexes, and that is when hairline cracks open in brick and drywall, doors start rubbing, and floors develop new squeaks.
Then the fall rains come, the clay swells back, and some of those cracks close up again. That yearly breathing is exactly what fatigues a foundation over decades, and it is why the same crack keeps coming back a little wider each year.
A hairline crack that appears in August and closes in October is the clay breathing, worth photographing and watching. A crack that grows year over year, passes an eighth of an inch, runs horizontally, or comes with sloping floors is the foundation losing the fight, and catching it in the watch stage is what keeps the repair small. Our crack guide shows how to read what you are seeing, our drainage page covers the moisture management that evens out the seasonal swing, and a free written inspection gives you a measured baseline so next August you know if it moved. Inspections are free, and late summer is exactly the right time to get one.
Free inspection with a written baseline, before the fall rains close the evidence.
Call (256) 342-9622