Soft washing is our preferred cleaning method. All applications are done with 500 psi or under, including concrete.
As far as cleaning solutions, here in Florida no "one" solution will work for "all" tasks. What we use is a "bleach" alternative, safe for plants & animals. It's the only product I've seen (I've been doing this type of wash for half my life) that does EXACTLY what sodium hypochlorite, bleach, chlorine, etc. does...
Without ANY of the damaging effects. It's a roof treatment, as well as a cleaning solution. There's all kinds of ways to clean roofs, some good, some bad. I stick with what I like best, which is our safe-wash system, in use 1991.
Nice to meet everyone, it's a pleasure to be here