Right a backpack it is then I did think about buying water erithwc but not sure how much people would charge? I think I'll just buy a small DI vessel to start with.
Another question, is it true that it takes more than on clean to get windows up to standard using wfp? Or is that just a myth I heard?
back pack isnt a bad choice mate - it will still come in handy when you move onto a van mount but a trolley can sometimes become a dust collector in the garage once moved onto van mount.
if di only - then i would get an 11ltr di and tulsion resin - daqua are very good and so are purefreedom and of course a tds meter.
mate maybe you could have half a day with a local wfp cleaner, sure someone on here can help.
first cleans can go soooooo very wrong IF not done right.
main reason is no matter how well you try and remove all the dirt from around the frames by hand the water and brush will always find more that you just simply couldnt see by hand and it could dry on the glass.
at times if i come across a very dirty first clean - i would just plug my pole n hose into customers outside tap - to give the frames a really good wash to remove all the crap out of the frames, then back over wfp.
you will be shocked to see how much crap comes out of the frames even if you have been trad on them for a while