The answer to 'my roof installation is failing' is that there are several common causes, including improper installation, poor material quality, weather damage, and lack of maintenance. Symptoms may include leaks, sagging, missing shingles, and premature wear. Solutions depend on the specific issue, but may involve re-roofing, repairs, or replacing damaged components.
In many cases, roof problems are best addressed by a professional roofing contractor. DIY repairs are possible for minor issues, but larger problems or complete roof replacements typically require the expertise of a licensed and insured roofer. They can properly diagnose the problem, source the right materials, and ensure the roof is installed to industry standards.