It needs heat moisture and nutrients to grow.
Mold or fungis on roof.
Mold is one of the most problematic fungi there is for a homeowner.
If it is slimy or any sort of residue comes off on your hand repeat the above steps.
It is easily spread and causes those colorful stains on so many roofs.
Characterized by its black green hue algae growth can eat away at shingles and eventually lead to roof rot.
You must let the roof dry before a second application of mix.
Unlike algae and moss which in their proper settings are healthy natural flora mold is a more clear cut.
The more the moss spreads over your roof the more it will add to your moisture problem on your roof.
Mold damage on roofs 1.
Not only is it unsightly it is extremely hazardous to the health of you and your family.
A dirty roof is actually full of more than just dirt.
This can seep into the wood of shakes and shingles and lead to roof rot.
Allow the roof to dry thoroughly.
A second application of cleaner will not have its full effect on a damp surface.
Easily recognizable because.
Most dirty roofs are covered in various molds algae fungus and lichen.
It s actually just a blue green algae spread by airborne spores.
Known as black algae or roof mold gloeocapsa magma is usually blamed on dirt accumulation mold and mildew or defective shingles.
Commonly found in climates with warm humid summers it does no damage to the roofing but it certainly does looks bad.