Roof Stains

Roof stains come from "cyano bacteria gloeocapsa magma" landing roof shingles and tiles.
Roof Algae feeds crushed limestone in shingles.
Fungus, mold and mildew grow on top of roof algae.
Homeowners who find spots of roof mold on a shingle care to remove it.
Over time, the roof algae multiplies and the black streaks, Roof streaks or mold stains appear signaling the need to remove roof mold by roof cleaning with a quality roof shingle cleaner.

Roof Algae Stain Survival

Algae roof shingle stains need: Heat, moisture, and nutrients.
Shingle mold and algae stains get heat from the sun.
Roof algae stains get moisture from rain and dew.
Algae roof stains nutrients come from limestone filler in the shingles.
Limestone and moisture can't be prevented, so cleaning roof shingles relies on annual cleaning of roof mold and algae to make the roof be clean and curb appeal increased.

Roof Stains Rapid Spread

Roof algae, mold, mildew and lichen grow and hold moisture accelerating growth.
Black roof streaks and stains spread wider and darker over time.
Freezing temperatures won't stop the growth of roof mold black streaks or roof stains.
Only roof cleaning can remove algae from the shingle; shield the roof from future growth.

When to clean roof mold stains ?

The first sign of mold stains, or missing granules means roof cleaning is needed!
Without annual roof cleaning, asphalt shingle life is reduced and cooling costs increase because the roof mold streaks absorb heat from sunlight.