What you have to do is to combine a cup of this bleach with a gallon of water.
How to remove black spots from rv rubber roof.
Pour this solution into a large spray bottle.
In fact this solution will even help with the dreaded black mold removal.
Always pre rinse your rv sides before you rinse your roof.
A quick rinse with chlorine bleach is necessary to kill the mildew spores and retard their regrowth.
Use your sponge to spread vinegar over any areas of your rubber roofing that have mold growing on them.
I had a customer that had their trailer sitting in the arizona desert for about five years.
Caution should be exercised when washing your roof to prevent cleaners from running down the sides since this could cause streaking.
Be sure to go over the surrounding areas too because they may have early growths of mold that you cannot see.
Once you have done this leave the vinegar you have applied to sit and do its work.
You can also get rid of the accumulated molds in your rv rubber roof with the help of a household bleach.
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.
7 use a sponge mop or soft bristle brush if it is very dirty to activate the cleaner using a circular motion.
Fill a large spray bottle with the mixture and climb back up on the roof.
Spray any areas where you see mold mildew or other stains.
This will cut right through the mold mildew and scum without hurting the paint or fiberglass.
Apply your rubber roof cleaner using a spraying mechanism.
After the solution has dried take a soft scrub brush and wet it with the same bleach solution.
You should work on one 2 to 3 sq ft area at a time.