The answer to 'why is my metal roof sagging' is that a sagging metal roof is often caused by inadequate support or structural issues. Metal roofs can sag over time due to factors like poor installation, excessive weight from accumulated snow or debris, or damage to the underlying roof structure.
Some common symptoms of a sagging metal roof include visible dips or depressions in the roof surface, water pooling, and cracking or separation of the metal panels. If left unaddressed, a sagging roof can lead to leaks, further structural damage, and even roof collapse in severe cases.