It's far easier to make a repair to steel pipe with copper than with galvanized plumbing pipe ... To remove the old leaky joint, turn off the water at the main entry, drain the system and cut ...

Q: I live in a 1940s house that has galvanized pipes ... It wouldn’t fix any rust that has formed at threaded joints. And because the pipes are hidden behind walls, there would be no way ...

Stop the source of the wall leak. For plumbing leaks, fix or replace the leaking appliance or device. Leaking pipes may need to be cut away and replaced with new pipes by a plumber. Exterior leaks ...