These stains will discolor your roof and damage the shingles over a period of time if left alone.
Black mold on roofing shingles.
I am really disappointed the treated shingles didn t work.
The black streaks are also known as black algae or roof mold.
Believe it or not those black streaks only appear on roofs in certain areas of the country.
Commonly found in climates with warm humid summers it does no damage to the roofing but it certainly does looks bad.
Technically the black streaks on roofs are a form of algae known as gloeocapsa magma.
There are a number of commercial products available that will get rid of mold but if you don t mind working at heights getting mold off roof shingles is really something you can.
You clean it and it returns year after year.
Granted some of it could be mold but what is spreading like wildfire is gleocapsa magma.
Mold stains can form on roof shingles that are in permanent shade.
Not only is it unattractive it can actually shorten the life of your shingles so you really should get rid of it.
I covered our asphalt shingle roof about five years ago with white 50 year guaranteed shingles that had algae prevention treatment but now the entire north side of our roof is black with algae i bought the shingles from lowe s in marianna florida.
Those that tend to be the most humid furthermore they will only appear on the north side of the roof.
The black mold like stains and streaks that appear on roofs particularly light colored asphalt shingles is actually a blue green algae gloeocapsa magma.
Mold or mildew makes black ugly streaks on a roof.