Responsibility for damage caused by an overflowing roof eaves gutter

During a recent heavy rain storm, the eaves gutters on several roofs in the complex overflowed causing damage to the fibre cement eaves sheets. In fact, this damage amounted to a couple of eaves sheets breaking and partly falling out.

The fact that most of the damage was caused to units where the eaves gutters had not been regularly cleaned  – in fact, some even had weeds sprouting above them. Others were probably where the falls on the gutters were inappropriate.

The water only damaged the eaves sheets and did not enter inside of the building.

Should the referenced damage be the responsibility of the unit owner and not an incident that can be a legitimate insurance claim? 

These are Class B buildings in the ACT.