Galvanized plumbing pipes were commonly used in older homes and commercial buildings up until the 1960s. Though they can last for decades, they eventually corrode and cause problems. If your home has galvanized plumbing pipes, it’s important to understand the potential issues they can cause.
What Are Galvanized Plumbing Pipes?
Galvanized pipes are made from steel or iron that has been covered in a layer of zinc. This layer of zinc helps to protect the steel from corrosion and rusting. Galvanized pipes were popular for a time because they were less expensive than copper and other metal pipes.
The Problems With Galvanized Plumbing Pipes
Though galvanized pipes may last for decades, eventually they will corrode. Corrosion of galvanized pipes occurs from the inside out, due to a process called electrolysis. As the pipe corrodes, the zinc coating breaks down and the pipe will start to rust. This rust can lead to a number of problems, including:
- Low water pressure
- Discolored water
- Leaks
- Clogged pipes
- Rust build-up
Low water pressure can be caused by corrosion on the inside of the pipe. As the pipe corrodes, it will narrow, reducing the amount of water that can pass through. Eventually, the water pressure will become so low that it will become difficult to get enough water to do basic tasks like showering or washing dishes.
Discolored water can also be a sign of corrosion. The rust from the corroding pipe can get into the water, giving it a brownish color. In some cases, the water may even have a metallic taste.
Leaks can occur as the pipe corrodes and eventually breaks down. These leaks can cause water damage to flooring and walls, leading to costly repairs.
Clogged pipes can also be a problem with corroding galvanized pipes. As the pipe corrodes, it will release particles into the water. These particles can build up in the pipe, causing clogs.
The bacterial build-up is another issue that can occur. Bacteria like Legionella can build up in the corroding pipes, which can lead to serious health risks.
Replacing Galvanized Plumbing Pipes
If you have galvanized plumbing pipes in your home, it’s important to replace them as soon as possible. Replacing the pipes can help to prevent the problems described above, as well as reduce the risk of lead contamination. Depending on the extent of the corrosion, you may need to replace the entire plumbing system.
If you’re considering replacing your galvanized plumbing pipes, it’s important to hire a licensed plumber. A professional plumber will be able to inspect your pipes and determine the best course of action. In some cases, the plumber may be able to repair the pipe, while in other cases the entire system may need to be replaced.
Conclusion
Galvanized plumbing pipes were commonly used in older homes and commercial buildings up until the 1960s. Though they can last for decades, eventually they will corrode and cause problems. Common issues include low water pressure, discolored water, leaks, clogged pipes, and bacterial build-up. If your home has galvanized plumbing pipes, it’s important to replace them as soon as possible. Hiring a licensed plumber is the best way to ensure that the job is done correctly.