It s best to clean your roof on a cloudy day to prevent the cleaner from evaporating too quickly.
Mildew on roof shingles.
When that happens it is generally caused by mildew algae mold or dirt stains.
Mix 1 part bleach to 3 parts water and apply to the mildew covered area with a hand pump sprayer.
More so than other harmful growths mildew spreads fast.
These black streaks are unsightly and can diminish the appearance of the entire exterior of the home.
If you live in a humid area of the country you ve probably seen unsightly dark streaks on asphalt shingle roofs.
Though often attributed to an accumulation of dirt defective shingles mold or mildew.
Mold or mildew makes black ugly streaks on a roof.
Not only is it unattractive it can actually shorten the life of your shingles so you really should get rid of it.
Extensive mold growth can also expose the interior of your attic or crawlspace to mold spores carrying the problem over to the inside.
A blue green algae known as gloeocapsa magma could be the reason you have the algae which is spread by airborne spores.
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 do yourself.
Mildew growth is likeliest to occur in warm wet environments and often spreads on roofs with poor drainage.
The common denominator between algae mold moss and mildew is that all are the products of damp settings.
The most common culprit is actually a blue green algae known as gloeocapsa magma that is spread by airborne spores.
Mold stains can form on roof shingles that are in permanent shade.
If you know the manufacturer of your shingles mildew algae and other moisture related organisms.
These stains will discolor your roof and damage the shingles over a period of time if left alone.
It is not uncommon for roof shingles to turn black over time.
Sometimes it can also be caused by an accumulation of mildew mold dirt or defective shingles.