I’m looking to add House Washing and Roof Washing to my list of services. My problem is that I live in an area of California where very little organic growth is to be found on buildings. Buildings are dirty, but not with algae, mold, etc, just dirt. I have caught wind of some other companies not far off from me who house wash with only surfactant, no SH. Does this sound right to you guys? What would you all do if you went to wash a house with no visible organic growth, only a layer of dirt?
Connected to this question is what kind of set up would be best for my situation. I have considered a dedicated, 7gpm pump with a tank holding only water and surfactant, but maybe a pressure washer set up would be better? I’m grateful for any advice you can give. Thanks