Another rubber roof question
Just came down from cleaning the rubber roof on the 5th wheel & wasn't happy with the results. I used a solution of water & simple green, & used a soft brush. The rig is stored on the north side of the house & is subject to mildew, the dark mildew stains remained after the cleaning. What are your thoughts regarding adding a splash of bleech, (1/4 cup per 3 gal. pail), or should I use another product. I'm a little shy about using a stiffer brush, as I scrubed the white right off the rubber on my last rig.
2010 34' Montana 5 wheel, pulled by 2009 dodge 3500 diesel, 4x4.(gone), 2016 Ford F-350, SRW, 4X4, Diesel.