We have a rub rail going down both sides of the camper. It was originally white, it is covered with what appears to be mold. Lots of blackish/brown patches. I tried spraying it with a bleach/water solution, letting it sit a bit then scrubbing with a brush. It helped a bit but not the result I was hoping for.
Does anybody have any other tips/tricks/ideas/products etc?
2014 F150 5.0L V8
2009 Keystone Outback 268RL