The answer to 'roof replacement sagging' is that sagging roofs are a common problem that often requires professional roof replacement. Roof sagging can be caused by a variety of issues, including structural damage, improper installation, or simply age and wear over time. Symptoms of a sagging roof include visible dips or depressions in the roof surface, cracks or separation in the roofing materials, and even interior water damage or ceiling stains.
While some minor sagging may be addressable through repairs, significant sagging is typically a sign that the entire roof system needs to be replaced. Attempting DIY roof replacement on a sagging roof can be dangerous and may not address the underlying structural problems. It's best to call in a licensed and experienced roofing contractor to properly assess the situation and provide a long-term solution.