Commonly found in climates with warm humid summers it does no damage to the roofing but it certainly does looks bad.
How to clean mold and mildew off roof shingles.
Now if you live where cleaning off mildew from exterior surfaces is a constant chore the just hit the moss with the same bleach solution.
Roof shingles become dirty over time.
Mold stains can form on roof shingles that are in permanent shade.
They are exposed to wind rain and other weather elements that not only cause dirt to form on the shingles but also mold and mildew.
How to clean mold off a 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.
Inspect the roof for any remaining fungus.
Algae mold mildew moss and dirt are often attracted to shingles.
You must let the roof dry before a second application of mix.
Extensive mold growth can also expose the interior of your attic or crawlspace to mold spores carrying the problem over to the inside not to worry though because you can clean the mold off with basic household bleach and save.
Stained shingles take away from the overall neat appearance of the exterior of the home.
If it is slimy or any sort of residue comes off on your hand repeat the above steps.
To clean mold off a roof start by putting on rubber gloves a breathing mask and goggles to protect yourself from the harsh cleaning chemicals.
A mixture of trisodium phosphate tsp bleach and water will also remove stains.
Then use a long handled brush to scour the surface of the shingles and loosen stuck on mold while it s dry and brittle.
Allow the roof to dry thoroughly.
That ll kill it off but won t inhibit regrowth so just rewet the roof with the bleach solution whenever cleaning off the rest of the place.
Mold or mildew makes black ugly streaks on a roof.
Cleaning due to evidence of permanent asphalt shingle damage caused by high pressure powerwashing.
These stains will discolor your roof and damage the shingles over a period of time if left alone.
You can successfully clean shingles by using oxygen bleach.
Not only is it unattractive it can actually shorten the life of your shingles so you really should get rid of it.