Gutters can bet blocked because of branches, leave and other things as well. Leaving a gutter stuck and not doing anything to clear out the mess that is keeping it blocked is a big mistake no one should do. The purpose of a gutter is to help the water from the roof leak to the ground. A blocked gutter will keep the water one the roof leading to long term damages to the structure of the roof.
These damages may not be obvious from the start, but you will see the first signs of your mistake of not clearing the gutter soon enough. If you are dealing with this problem, contact a gutter cleaning Auckland company as soon as you can.