When performing any type of cosmetic work, it’s important to fix underlying problems. It is crucial to hire a reputable and highly skilled contractor, who can assess the situation. For example, when you hire a professional plumber, they will look for various signs such as leaks, drainage issues and milder to name a few. During this time, the plumber may discover that there are underlying issues with the pipes.  In many cases, pipes that are outdated and old can have many negative issues. A good example is if there are cast iron pipes installed. These types of pipes are known for becoming corroded within the inside. However, they can look perfectly fine on the exterior. Copper joints and piping that was made with galvanized steel can be prone to corrosion. In this case, replacement may be required, otherwise you can expect to make expensive repairs at some point. Another issue with copper piping is it can become corroded if water has a high content of minerals.