Any job with repetitive actions will be at risk of RSI problems, typist or window cleaner, it'll affect us all (or I should say it has the potential to affect us all)
Got a mobile phone?
Do you text a lot?
RSI is also a problem with those too.
The time spent working over 30 or 35 feet is pretty minimal, I have three big accounts I have to do this week, the one is closer to 45 ft rather than 35ft, the other two are around the 35ft mark, put all three together and they will total about 9 hours work.
add the time taken to clean the top floor of all 3 of them and it will add up to perhaps an hour at the maximum, about 20 minutes per building.
And those are the only ones this week, one hour out of 35 isn't bad I think.
Few of us will spend a long time working at that height at any given time.
Now if you were not doing that of a pole you would be doing it off a ladder, I have spend most of my window cleaning life doing these accounts off a ladder and it is way tougher and more dangerous off ladders!!
In fact I rated one of them too dangerous to do the top floor the last couple of years I was doing them off a ladder, and I didn't even know about WFP in those days either.
Each month I probably spend no more than 4 or 5 hours actually working above 30ft, very few of you with domestic accounts will equal that, remember, that is actual time spent working at that height!
And rinsing off the glass at that height, even if I rinsed off the glass as a matter of course, there is no way that I would on windows above 30ft, the strain is just too much on your body.
Ian