Spray it on the specific parts of the roof where molds mildew and stains appear.
How to remove black spots on rv roof.
You will need one cup of household bleach mixed with one gallon of water.
What you have to do is to combine a cup of this bleach with a gallon of water.
In order to tackle our long overdue roof cleaning project we used simple green thetford premium rv black streak and bug remover and camco full timer s choice black streak remover.
To make a diy mold and mildew remover simply mix a gallon bucket of hot water with a cup of powdered dishwashing detergent and a dash of bleach.
Again leave the mixture to soak for a few minutes before wiping it away.
Rv advice how to remove black streaks from your rv rv expert mark polk shares his tips for removing notorious black streaks from your rv.
In fact this solution will even help with the dreaded black mold removal.
This will cut right through the mold mildew and scum without hurting the paint or fiberglass.
Be sure children and pets are kept away from both your work area and the tarp.
Since the roof is fiberglass just like a typical shower stall there are other brands and types of cleaners that will also work well.
Once everything but the mold is rinsed away climb back down and mix up your mold remover.
Next mix 1 2 cup of borax with 1 gallon of water.
Soak your sponge in it and then apply it to the affected areas.
Dirt grime and time can leave your rig pray to difficult remove black streaks.
Pour this solution into a large spray bottle.