So on average 1 peson can do around 15 to 20 houses a day trade,how many hours is that in? and do you clean frames and sill, and are the houses all together.I have a small part time round as i do other work too, i work with my partner and no way could we do that many trad in a day we do sills and frames to.Ours are quite spead out but unless we has rows of terrece houses and just did the glass we might get to 15/20 a day but probably no more.I do own a WFP back pack and pole and that does save alot of time and it is handy fo them hard to reach windows.