I have always used a sponge, a little spic and spanand a whole lot of elbow grease to clean my roof. I am too old andtired to use the sponge approach anymore. What type of brush do you guys use? Obviously it is mounted to a pole (I have had enough of crawling around on my hands and knees
) but how stiff should it be? A guy once showed me the one he used and it was an "acid brush". It seemed awfully stiff to me. I did try one like you would use to wash the sides of the camper once and it was obviously way too soft. I guess I am wondering if it is possible to damage the roof by using too stiff of a brush.