SLX OR SIMALAR POLE IS A DEFO,
WE ARE SCREWED EITHER WAY dAZ YOU ARE RIGHT, SOME SAY THEY DONT FEEL ANYTHING, i CAN WEIGHT TILL THERE HAVE DONE IT YEARS, sry for shouting.
every window cleaner that I know that has been doing it years has some sort of problem due to window cleaning be it achey legs, knackered knees, done in back ect.
Are job is labour intensive are bodies are not made for this job other wise we would grow padded knees, better joints and finger skin that did not blister and soak in dirt

Window ckleaning is a means to an end, it is not a life style thing to me it is a job that pays what I need it to to get me for now where I want to go.
Just going to get some more pain killer

Ian