Washing works
Washing removes the silt and residue that clearing alone leaves behind, so the channel is properly clean.
The method matters
Not every gutter should take the same treatment. Older gutters, fragile joints and some materials need a gentler approach. We choose the pressure and method to suit the guttering.
A word on doing it yourself
Working at height with water equipment is risky. For anything above a single storey, it is safer to use someone insured and equipped for it.