some windows just come up realy bad my friend,i have new lead-light windows with black upvc frames,they have been in for over a year,and i,ve cleaned them about 6-8 times now,wth me pole,and they look crap,it looks like they have runs and spots all over them,i would be gutted if i paid someone to clean my windows and they ended up looking that bad.I always say to my customers if your not happy with the job then please let me know,if the worst comes to the worst,just go back to the ladder and do them if you so wish,..wfp is good but not by any means perfect,no matter how good you are ,,