On the other hand, a single house can be a victim of 2 or even more foundation problems. For example, in this home, there is a settlement and heaving problem. A heave problem is the opposite of a settlement; this happens when clay gets too much exposure to moisture, causing the clay to expand and push the floor up. Our heroes will use this rooftop to conduct all the evaporated moisture to the outside of the house. Leveling the moisture level to an adequate number will help clay get stable and not cause any drastic damage.