These box gutters collect a lot of debris from the gum trees overhead. They are cleaned every three months and each time they are full of debris.
A box gutter is designed to remove the rainwater from the roof, directing the water along the gutter to the rain head or sump where the down pipes take the water away from the building. A good box gutter will fall correctly allowing the water to flow easily to the rain head and enter the large down pipe. When this sump gets full of debris, you run the risk of water not being removed from the gutter and blockages from debris being deposited into the down pipes.
Leaving moist leaves and debris to sit in a box gutter shortens the life span. Moss would also be another reason to clean. A box gutter is wide and there maybe enough room for the water to flow around and away but if this debris is left to sit in the gutter it will corrode your gutter that much faster. This then causes problems such as water ingress.
Box gutters are expensive as there is a lot more work involved to install one and very costly if you incur any leaking issues. Damage to ceilings and any internal repairs could be an expensive exercise.
The best course of action for you if you have box gutters would be to maintain regular gutter cleaning. Even if you have no trees around you, your gutter could do with a vacuum to remove any corroding debris lurking just under the lip of the roof.
Gutter-Vac Tasmania have maintenance programs that cater to whatever you require. Call today to see what your box gutter needs. PH 1300 654 253