What to look for
Telltale signs of a slab leak
A water bill that rises without a change in use, the sound of running water when every fixture is off, and damp carpet or warped hardwood are common indicators. An unusually warm or cool area of floor can mean a hot or cold line is leaking beneath it.
Cracks in walls or the foundation and a musty odor or mildew can also follow persistent moisture. None of these signs confirms a slab leak on its own, but two or more together are a good reason to arrange leak detection.
