The answer to 'how does leak repair work' is that leak repair involves locating the source of the leak, assessing the damage, and then repairing or replacing the affected plumbing components. This typically involves shutting off the water supply, draining the system, and then using specialized tools and techniques to access, diagnose, and fix the leak.
Common leak repair methods include patching holes or cracks in pipes, replacing washers or gaskets, tightening connections, and in some cases, replacing the entire pipe section. The specific repair process will depend on the type and location of the leak, as well as the materials and condition of the plumbing system.