The strata property shown below had some serious safety issues. Due to dirt and algae build up over the years the driveway became very slippery when it was wet.
Residents complained about slipping when it was damp, and cars had trouble getting up the steep driveway in the wet. High pressure cleaning has removed the algae and in-grained dirt, significantly reduced these safety concerns.
In photo 6 you can clearly see the difference in colour compared to the neighbours driveway.