WFP will clean heavily soiled windows.
A good idea on heavily soiled windows is to dip your brush head in GG3 or unger liquid solution and agitate it on the glass and frames using plenty of water then move to the next window and do the same.
After about 3 or 4 windows go back to the first pure water only this time and wash the frames and glass and rinse well.
They will come up great.
I did an egged window today with WFP.
I thought i may have to get my ladders but thought i will try WFP for it.
I washed the windows as normal and really give the egg a good scrubbing.
Then cleaned the rest of the house.
Came back to the egged window and scrubbed again and to my suprise it started to come off fairly easily.
One all gone washed and rinsed the window normally and good results.
windowsteve said - On heavily soild windows wfp tend to leave them a bit milky looking go over them a few times.
Are these windows that turn milky whilte painted aluminum frames or wooden painted frames as these are the only one i have ever had go milky.
If so its because they are oxidised and need repainting
I tend to stay clear of these ones.
Paul