We've owned and operated a Window Cleaning business for a long time and have pressure washed homes for a while too. I'm looking to build a system where I can apply solutions to (or prime) buildings 3 or more stories high. We also do not want a bulky system. We'd like to outfit a couple large enough tanks to our existing van with pumps etc to do the job right. I have some great ideas already I'm just unsure on what the right equipment I need to do so is, or if there's anything I'm not aware of. Any takers? Ben E.