Have been using Sorbo Glide for a few weeks now to see if it would help with pole work. Somtimes the blade seems to "grab" the window, as though it was still dry and takes a lot of energy to overcome. I feel it helps a bit but could be emagining it! Iv'e been experimenting a lot with different solutions. Even tried soap powder in with the washing-up liquid which worked fantastic. Great slip but, it's a big but, it dries white on the glass so much so that it's a no no.
Would using a hard blade instead of soft help? Any other idea's , and don't say WFP. (might do that but not yet)
Chris.

 

I've still not used it - I think its in the back of the van somewhere  

You use the water softner powder as well, I've had success with that. I've got used to GG4 now!

Thanks for your help guys. This is a brilliant site. Glad I found it, and special thanks to Peter who runs it.
Been doing a test today without Sorbo and it seems the same. I was told that not all glass is the same and some  glass is realy difficult.
Chris.
:-/

I've tried the Sörbo glide, yeah it works quite well on hydophobic windows, I don't really need to use it on the phillic.