Dawn Ultra or Borax to clean epdm roof?

ScottG wrote:
Unless it's just unsightly to you, just sweep it as you said. It will add no life to the roof and may actually shorten it by cleaning. It's an industrial roof material that's meant to go a lifetime without cleaning.

x2.

I will add though that between the brown fiberglass front cap and white chalky residue that the roof excretes it leaves white streaks on the front cap. Arrrrg!! I wish that on mid profile 5'ers that they would make the apex of the cap and roof higher so that the residue would run towards the rear of the 5'er and not down the cap.

It's useless to clean the roof because it naturally forms a residue.