Havent power washed for any customer yet, but now that thing are slowing a bit I got a call from some appartments requesting power washing of the exterior vinyle siding that is dirty because some excavation has just finished. Three 2 story, 8 units each appartment buildings (White). Equipment I have for it is a 3400 psi, 4 gpm, 10 horse power washer, several ladders from 9' step to 40' extension. I can possibly use my 16' flatbed that stands about 5' to help with a lot of areas because access is good. I figure it might take most of a day by myself or I may take a guy with me to quicken things up. From u guys experienced with power washing, what else should I reddy myself for? Im shure it will give my shoulders and arms a good workout. With weather in the 60's, shouldnt need rain coat . What prices are u charging? This lady wants an estimate soon.