Hi, have been doing drive cleaning for a while but need extra income. Already have van fitted with large tank what other stuff would I need to start window cleaning with wfp system and is this system better for commercial properties or is it better than trad method for houses? Am based in Birmingham so probably loads of competition out there and I wouldnt have a clue what to charge either? Where I am most houses just normal size semis and have only seen trad window cleaner round here now n then. What do you do about collecting money? just hope there in when you do windows or go back and forth. Sorry for all the questions but am keen to start somthing new. Any help would be great thnx,