A friend of mine is regional manager for a chain of gas stations. He has offered me 34 stations doing nothing but the canopy(around the side of the roof over the gas pumps-the visible part) and the support columns for the canopies. What I wanna know is does anyone have any experience doing this? I know what will get them clean...I'm just debating on whether an extendable wand will do, or should I invest in scaffolding. What do yall think?