What does frost heaving and thawing mean?
Frost heave is caused by water that is trapped underground in layers of soil that have become frozen. When the water freezes it expands causing the surface to move vertically. This natural occurrence can cause the surface to move up in the winter and back to the original location in the spring when the frost thaws. Even if you live in a warmer climate like Texas, the principles are the same. The soil will expand and contract with temperature and moisture changes in the soil. This is less of a problem in these climates, but movement can occur.
