The best way to clean a roof is to use a roof cleaning chemical and let it sit for awhile.
How to spray a roof with cleaner.
If the staining is fairly light you can rinse off the cleaning solution with just a garden hose sprayer.
Then spray the cleaner onto the shingles photo 1.
In most cases the stains and streaks are a form of algae commonly known as gloeocapsa magma.
It will rinse off the next time it rains.
That ll prevent the cleaner from drying out too quickly.
Before applying the cleaner spray the roof with water to cool it down.
It is incredibly safe and works for all kinds of exteriors.
It is a superior quality maintenance free easy to use cleaner that will increase the longevity of your roof the curb appeal of your home and potentially lower your electric bill.
The spray forget roof cleaner is an eco friendly non corrosive and affordable product that does not contain any bleach or phosphates.
With most good cleaners that s all you need to do.
The solution is manufactured to take care of all kinds stain without damaging your landscaping.
Just spray it on and leave it.
Spray forget will remove green and black stains from roofs decks awnings brick and siding without requiring any rinsing.
I mix up my cleaner in bug sprayer container and spray it all over the roof.