How to Fix Pipes in a Shower That Have Rust & Low Pressure

Galvanized Pipe Restricts Flow

• Galvanized pipe cannot be repaired. Instead, galvanized water pipes that are restricting flow and causing rusty water should be replaced with either copper or PEX tubing. This type of work has the potential to be difficult and may require the services of a plumbing professional. When removing galvanized pipes, the first step is to turn off the main water valve. Turn on the shower faucet and another faucet in the house, preferably on a lower level, to drain water from the pipes.

Remove Galvanized Pipe

• Cut and remove the pipe beyond the galvanized pipe feeding the shower. You don’t want to leave any galvanized pipes or fittings because even a small piece of corroded pipe can restrict water flow. If the showerhead and faucet are new, the pipes in the walls may have been converted to copper or PEX when these items were installed. If not, the wall behind the shower will need to be cut, providing access to remove galvanized pipe leading to the faucet.

Install New Pipe

• After removing all galvanized pipe from the water lines, install new copper or PEX water pipe. PEX may be preferable because it is easier to work with and requires less fittings than copper, reducing labor and installation time. PEX tubing is also less expensive than copper.

Test and Enjoy

• After replacing the galvanized pipe, turn off all faucets and then turn on the water main. Check the new pipes for leaks. Turn on the shower faucet and enjoy rust-free, unrestricted water pressure.