Yes — Mainstream finds and repairs slab leaks (leaks in water lines under a concrete foundation slab) using non-invasive detection equipment to pinpoint the leak before any cutting, then either spot-repairing the affected pipe section or rerouting the line through the wall or ceiling above. Slab leaks are time-sensitive — the longer they leak, the more damage they cause.

Signs of a slab leak

  • Warm spots on the floor (hot water line)
  • Hissing or running water sound when nothing is on
  • Unexplained jump in water bill
  • Damp carpet or pooling with no visible source
  • Cracking in the slab or foundation

We use thermal imaging and acoustic detection through our leak detection service.