The answer to 'when to replace sink' is that you should consider replacing your sink if it is damaged, outdated, or no longer meets your needs. Sinks typically last 10-15 years with proper care and maintenance, but they may need to be replaced sooner if they become cracked, chipped, or corroded. Additionally, if your sink is too small or lacks the features you need, it may be time to upgrade to a new one.
When deciding whether to replace your sink, consider the overall condition of the sink, your current and future needs, and your budget. If the sink is in poor condition or no longer fits your needs, replacing it can improve the functionality and appearance of your kitchen or bathroom. However, if the sink is still in good shape, a professional plumber may be able to repair it instead of a full replacement.