When a jetty or a wooden decking is left un-treated, moss and algae often begins to grow on the surface, which can take away from the overall look.
However, not only is it unsightly, but the resulting slippery surface, when wet, can be very dangerous. Cleaning Doctor first treats the surface with a cleaning agent and then pressure washes it with a rotary cleaning head that cleans every groove without leaving any marks, like some normal jet washers do.
Once the surface is fully dry, the freshly-cleaned decking can be treated with a sealant or protective coating to protect it from the elements.