The answer to 'fascia sagging' is that a sagging fascia board is typically caused by rotted or loose fascia material, insufficient support, or general wear and tear over time. Symptoms include visible sagging or bowing of the fascia, gaps between the fascia and roof edge, and potential water damage or leaks. Solutions can include replacing rotted fascia, adding additional support brackets or braces, or fully replacing the fascia if it is beyond repair.
In many cases, fascia sagging can be addressed with a DIY repair, but it's important to ensure proper safety precautions and techniques are followed. However, if the sagging is severe, the fascia is significantly rotted, or you're unsure of the cause, it's best to call in a professional roofing contractor to properly inspect and repair the issue.