The answer to 'metal roof worn out' is that a metal roof can become worn out over time due to factors like weather, age, and improper installation. Common signs of a worn metal roof include rusting, dents, holes, and leaks. The best solution is usually to have the roof professionally inspected and repaired or replaced as needed.
Trying to DIY repairs on a worn metal roof can be risky and may not address the root cause of the problem. It's generally best to call a licensed and experienced roofing contractor to properly assess the condition of the roof and recommend the safest and most effective solution.