Technical data on Detroit supply lines, waste systems, and furnace lifecycle management.
Standard in Detroit homes pre-1960. These pipes corrode from the inside out, restricting water flow and eventually leaking at the threads.
We perform a "functional flow" test by running multiple fixtures simultaneously. If pressure drops significantly, internal scaling is present. Replacement with PEX or Copper is required for modern standard.
Original main stacks are cast iron. Underground laterals are often vitrified clay. Both are prone to root intrusion and segmental collapse.