no matter how well you cover yourself up, it still gets in, blow your nose its black,have a good spit its black, done so may over the years, and no matter what you tell people and try and warn them give them some idea of what its like they still have no idea,..... I was on a job few years ago and the ceiling downstairs had to come down, the customer was a right clever/know all , probably an engineer/teacher/fireman type,he offered to knock it down and reboard it all to save some money and asked me if it would be okay, I said go for it lad knock yourself out,..... so because of his attitude I deliberately held back on the scaffold, so he pulled it all down and reboarded using a pair of steps, so when I came back a few days later to be fair he had done it and had made a decent job, but he was knackered/exhausted and did nothing but complain for next few days about how dirty it was.