The black mold like stains and streaks that appear on roofs particularly light colored asphalt shingles is actually a blue green algae gloeocapsa magma.
How to clean mold and mildew off roof shingles.
These stains will discolor your roof and damage the shingles over a period of time if left alone.
If it is slimy or any sort of residue comes off on your hand repeat the above steps.
Allow the roof to dry thoroughly.
Mold or mildew makes black ugly streaks on a roof.
A mixture of trisodium phosphate tsp bleach and water will also remove stains.
Algae mold mildew moss and dirt are often attracted to shingles.
How to clean mold off a roof.
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.
Bleach can effectively clean roof shingles and remove even the toughest stains.
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.
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.
Mold stains can form on roof shingles that are in permanent shade.
Keeping roof shingles clean will not only enhance the overall look of your home but can also protect the shingles from damage caused by moss and mildew.
Commonly found in climates with warm humid summers it does no damage to the roofing but it certainly does looks bad.
Not only is it unattractive it can actually shorten the life of your shingles so you really should get rid of it.
Stained shingles take away from the overall neat appearance of the exterior of the home.
Oxygen bleach lightens stains as well and is less harmful to the environment but it doesn t produce as immediate or dramatic an effect as chlorine bleach.
Roof shingles become dirty over time.
You can successfully clean shingles by using oxygen bleach.
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.
Cleaning due to evidence of permanent asphalt shingle damage caused by high pressure powerwashing.
You must let the roof dry before a second application of mix.