So basically i mowedgeblowtrim with fall/spring cleanups and snow plow. I don't know jack about power washing but am getting a ton of requests by my customers to power wash their places. I would like to know everything about the business and how to properly and successfully power wash. From time to time i borrow my dads 2700psi troy-bilt pw but seem to take a LONG time trying to get off moss and green slime? off surfaces from wood to cement. It seems that i do not have the correct tips or pw'r itself to do the jobs efficently without wasting a ton of time? EX: im currently power washing my neighbors playhouse for his kids and the moss/green slime is taking forever to get off. It took me 2 hours to wash the damn thing and i didn't even finish the roof of it. I woud like to know i guess what type of pw'r i should invest in and wat type of tips i should always carry? Should i be carry different types of chemicals/soap for each different job? One customer in particular is asking for their house to get power washed of which their house is vineyl. I ended up telling her that i believed most houses went for 250-300 dollars which she immediately replied that sounds fair. In short story i am starting out with 0 knowledge, but have requests for this service to be administered with existing clients, and am seeking a phd in this stuff. Can anyone help? I hate using residential brands like troy-built however, is 2700 pw'r good enough for this job? Should i be getting other supplies? Tips ect? any help is VERY appreciated!