The answer to 'why is my metal roof sagging' is that the sagging is likely caused by inadequate roof support or structural issues. Metal roofs are heavy and require a sturdy, well-designed roof frame to prevent sagging over time. Common causes include insufficient roof framing, damaged or deteriorating trusses or beams, and improper installation.
Symptoms of a sagging metal roof include visible dips or uneven areas, doors and windows that are no longer square, and cracks or gaps forming in the roof panels. If left unaddressed, a sagging metal roof can lead to leaks, water damage, and even structural failure.