Cleaning black streaks

If you cover the RV there should not be any or many black streaks. IMHO they come from leaves that fill the drain channels on the roof and the runoff stains the walls. The cover keeps the leaves out.
Oh! and stay out of the sun...

TR3 Resin Glaze

Auto part store or Wal-Mart, get the road tar off too

You might try spraying a small area of black streak with WD40 and wipe it down. WD40 works great for dissolving road tar, bug, and a bunch of other thing. I have used it on black streaks too and it does help remove them. Test a small spot on your camper first. (just to be safe).

Hello! New here but I've had RV's before and used Simple Green. Home Depot buy the gallon and don't dilute it. Spray it on with a spray bottle and and rub it with a sponge. Seemed to work pretty good.

Looked at 2oldman's post on the subject. Did not see S-100 from your Harley Davidson dealer. Nothing works any better, Easy to use, spray on wait 3 minutes and wipe off. DONE GUARANTEED

Dick_B wrote:
If you cover the RV there should not be any or many black streaks. IMHO they come from leaves that fill the drain channels on the roof and the runoff stains the walls. The cover keeps the leaves out.

I understand what your saying BUT this advice after the black streaks are already there is like when someone with a sun burn asks for aloe and you say "if you had stayed out of the sun you would not need aloe"

:)

I bought some Black Streak Remover at Walmart, and they came right off. I thought they were caused by one of the caulks or sealants that are used.