Why Are There Black Streaks on My Roof? (Gloeocapsa Magma Removal)


Have you noticed ugly dark bands or black streaks running down your roof shingles in Tallahassee? Many homeowners mistakenly think these streaks are soot, dirt, or signs that they need a brand-new $15,000 roof replacement.
The Real Culprit: Gloeocapsa Magma
The dark discoloration is actually caused by Gloeocapsa magma, an airborne cyanobacteria that travels on North Florida breezes and attaches to damp roof surfaces.
Modern asphalt shingles contain limestone filler to add weight and durability. Unfortunately, Gloeocapsa magma feeds directly on this limestone, slowly eroding your roof shingles year after year.
Why You Should Never Pressure Wash a Roof
Blasting roof shingles with a standard pressure washer will: - Void your shingle manufacturer warranty. - Blow off essential UV-blocking granules. - Cause immediate leaks and structural shingle tears.
The ProWash Soft Wash Solution
ProWash uses manufacturer-approved low-pressure chemical treatment recommended by the Asphalt Roofing Manufacturers Association (ARMA). Our gentle application kills the algae spores at the root, restoring your roof's original color safely and extending shingle life by up to 10 years.
