First you have to understand the dynamics of these windows. The side that's on the inside of the building is of course no problem, it's cleaning the outside-face of the windows that gets tricky. You would think logically that you just slide one pane over, reach outside, wipe it, and then slide the other pane over and do the same.
The problem is that one pane sits in front of the other one
, so you cannot do this for one of the sides. You end up cleaning one pane entirely, and with the other pane you just cannot reach about 1/4th of it, so there's still this soot-filled section of my window that's driving me nuts!
This picture here
may give a better idea.
The most obvious answer is "use a ladder" and go from the outside, but I don't have one and I don't even think my landlord does nor will he spend his precious time cleaning my windows.
Are there any special tricks to getting that hard to reach spot from the inside with a tool or something?