The answer to 'my metal roof is failing' is that there are several common causes, including corrosion, improper installation, damage from extreme weather, and lack of maintenance. Symptoms may include leaks, rust spots, warped or loose panels, and reduced structural integrity. Solutions can range from minor repairs to a full roof replacement, depending on the extent of the damage.
If the issues are caught early, some minor DIY repairs like sealing leaks or replacing damaged fasteners may be possible. However, for more extensive damage or if you're unsure of the root cause, it's best to call in a professional roofing contractor. They can thoroughly inspect the roof, diagnose the problem, and recommend the most appropriate and cost-effective solution.