It s actually just a blue green algae spread by airborne spores.
Mold or fungis on roof.
Mold damage on roofs 1.
The more the moss spreads over your roof the more it will add to your moisture problem on your roof.
If it is slimy or any sort of residue comes off on your hand repeat the above steps.
Commonly found in climates with warm humid summers it does no damage to the roofing but it certainly does looks bad.
Mold is one of the most problematic fungi there is for a homeowner.
A second application of cleaner will not have its full effect on a damp surface.
A dirty roof is actually full of more than just dirt.
Easily recognizable because.
The black mold like stains and streaks that appear on roofs particularly light colored asphalt shingles is actually a blue green algae gloeocapsa magma.
Unlike algae and moss which in their proper settings are healthy natural flora mold is a more clear cut.
Most dirty roofs are covered in various molds algae fungus and lichen.
This can seep into the wood of shakes and shingles and lead to roof rot.
Not only is it unsightly it is extremely hazardous to the health of you and your family.
Allow the roof to dry thoroughly.
If your roof was simply covered in dust it would be very easy to clean but due to the presence of the algae mold and so forth cleaning a roof becomes much more involved.
Characterized by its black green hue algae growth can eat away at shingles and eventually lead to roof rot.
Inspect the roof for any remaining fungus.
It is easily spread and causes those colorful stains on so many roofs.