Those black streaks spreading across your asphalt shingles aren't dirt — they're a living organism destroying your roof. We eliminate them safely, without pressure washing, and guarantee results for 3 years.
The vast majority of Columbus homes have asphalt shingle roofs — and most of those roofs will eventually develop the dark streaks homeowners mistake for dirt or an aging roof.
The real culprit is Gloeocapsa Magma — a cyanobacteria that feeds on the crushed limestone filler in asphalt shingles. Ohio's humid summers create ideal conditions for it to thrive and spread. Left untreated, it accelerates granule loss, traps moisture, and can cut your roof's lifespan in half.
The ARMA (Asphalt Roofing Manufacturers Association) specifically recommends not using pressure as the only safe cleaning method for asphalt shingles. Pressure washing physically removes the protective granule layer and voids most manufacturer warranties. Our ARMA-approved process eliminates all bio-growth at the root — without a single PSI of damaging pressure on your shingles.
We respond within minutes. No obligation.
We fly a drone to photograph every inch of your shingle roof, mapping all algae growth, moss patches, and problem areas. You receive the photos and a detailed estimate by email before we start any work.
We apply our safe and gentle biodegradable algaecide solution from a ladder at low pressure. The solution penetrates and kills Gloeocapsa Magma and all bio-growth at the cellular level. No one walks on your roof.
We fly the drone again after treatment to confirm 100% coverage and send you before-and-after photos. Your quality commitment begins the day we finish.
Our gentle cleaning process preserves your shingle manufacturer warranty. Pressure washing voids most warranties by removing granules. We never put your warranty at risk.
Every job starts with a drone flight. You see exactly what we see before we start — no surprises, no upsells, no guesswork. We document everything with photos.
Columbus homeowners trust Forza because we do the job right. Our 5.0 Google rating across 256 reviews speaks for itself. We stand behind every job with a quality commitment.
"This is a well-run and needed company. Our roof is in the midlife phase. There were two or three mossy areas and some darker streaks. They used a drone to identify the needs of the roof. The moss is now truly dying out and the roof looks like a new one. Job well done!"
"Dwayne was very professional and responsive. The black streaks on our shingles are completely gone. He explained exactly what he was doing and why, and the quality commitment gave us total peace of mind. Highly recommend Forza to any Columbus homeowner."
See the dramatic transformation Forza delivers on asphalt shingle roofs across Columbus.
Before
After
Gloeocapsa Magma algae eliminated with our no-pressure treatment process.
Our shingle roof cleaning process in action — no pressure, no damage, just results.
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Get a free drone assessment and no-obligation estimate. We serve Columbus, Dublin, Westerville, Hilliard, Upper Arlington, and all of Central Ohio.
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