Simon how you getting on with this ? I'm still using it everyday, i've noticed on a few problem windows i have where i usually have to go back and T bar them with a squeegee that i havn't had too. The results are better than pure water alone. Less spotting.
Also, and probably the main reason i resurected this is that today i went out with probably a bit more HG in the tank than i would like. I havn't been measuring at all, and when i filled up last night i thought there was not much in the water i had left, so i filled up and put just a big squirt in. (350 litre tank). The water i was cleaning with today was really frothy. Infact in the run off on the floor you could see suds. And on the glass it looked literally like i wash squirting dishwater on them. I was really uncomfortable seeing so much foam and suds. My first job today was two semi's, one had a conny so once i'd done the fronts like this, then done the backs i was able to come round to the fronts and inspect them as they where dry, or almost. Results where perfect.
I've found it hard to get my head around the fact i'm supposed to be using pure water and usually look for a clean run off and now i'm squirting what amounts to foam and bubbles all over a window and i'm expecting it to dry terrible. And its not its drying out perfect.
Infact i'll stick my neck out a bit further and say...its not just my imagination its cleaning better, it really is. I can tell by the sills and frames i'm doing. Anyone else got any experiences to share with using it ?