Answers to the most common questions about roof cleaning, treatment, pricing, and our process. Can't find your answer? Call us at (888) 516-0008.
Those black streaks are a living organism called Gloeocapsa Magma — a hardy form of algae that feeds on the limestone filler in asphalt shingles. It thrives in Ohio's humid summers and spreads from roof to roof via wind and birds. Rain won't wash it away. It will only spread and accelerate roof deterioration until it's professionally treated with a biocide solution. The good news: Forza Roof Cleaning can completely eradicate it.
Most residential roof cleanings in Columbus range from $600–$1,600. What we've found is that no matter what your roof is made of, a cleaning usually comes in at around 5–10% of the cost to replace it. Of course, it all depends on the size, pitch, roof material, and severity of the bio-growth. Cedar, slate, and tile roofs typically cost more due to the specialized care and solution required. Commercial properties are quoted separately. We provide free, no-obligation estimates after a drone assessment — no inflated “discount” pricing like a used car salesman from the 1980s, just honest quotes so you can make an informed decision on what's best for you. We'd rather lose your business with the truth than gain it with lies. Life is much simpler that way.
Our cleaning process is safe for all roof types. We do not use destructive high-pressure washing on roofs. Pressure washing can affect shingle warranty coverage by removing granules and damaging the asphalt and fiberglass matting. Our method is the gentlest cleaning process on the planet. We gently apply our biodegradable algaecide solution at low pressure from a secure ladder just above the gutter line. This allows us to systematically cover every inch of your roof without walking on it. Non-invasive from beginning to end.
Our roof cleanings come with a 3-year bio-free guarantee. If any bio-growth returns within 3 years, we come back and treat it for free — no questions asked, no excuses. The guarantee is fully transferable if you sell your home. Most roofs stay clean for 5–7+ years after treatment. We have some of the first roofs we ever cleaned still looking good and going strong over a decade later. It all depends on tree coverage, shade, and local humidity levels. Bio will take much longer to form on a low-sloped ranch roof in direct sunlight than on a steep roof beneath a large tree canopy in constant shade.
Yes! If we can get FAA clearance. It's usually not an issue unless you live close to CMH or OSU airports. Even then, we can usually get clearance within a few minutes. Sometimes, it may take longer based on the air traffic going on that day. Regardless, we fly a drone before every job to photograph and assess the roof. This lets us see exactly what's going on — including areas not visible from the ground — develop the right treatment plan and give you an accurate estimate. The drone assessment is included free with every quote. We also do a post-cleaning drone inspection to confirm complete coverage.
No, you don't need to be home. In fact, most people take the day to go do something fun while we work since we can't have people, children, or pets running around while we're working. We only need the driveway to be clear so we can move ladders and hoses around safely, along with access to a working water spigot. We'll take care of the rest. If you like, we can also send you a link to your before-and-after drone photos via email when the job is complete, so you can see exactly what was done.
Yes, when we apply it using our roof- and property-protection procedures. We apply the solution above the gutter line while a ground technician keeps surrounding plants and surfaces wet before, during, and after application. The solution is diluted and neutralized as water is introduced, protecting landscaping from wind drift or overspray. After cleaning over 1,500 roofs, we have the process down to a science. Your roof, landscaping, and pets are safe with Forza.
Most residential roofs are completed in 2–4 hours. Larger homes, steep pitches, or heavily soiled roofs may take 4–8 hours. Cedar and slate roofs require more careful application and may take 4–10 hours. Regardless of how long it takes, you'll know that it's being done with the utmost care and respect for your roof and property.
We serve Columbus and 60+ surrounding communities including Dublin, Westerville, Hilliard, Upper Arlington, Grove City, Gahanna, Pickerington, Powell, New Albany, Reynoldsburg, Worthington, Delaware, Marysville, Lancaster, and many more. We also clean roofs in Cleveland, Dayton, and Cincinnati and every town in between. On occasion, we'll even clean a roof out of state if it makes sense for us to do so. No matter where your roof is located, let's discuss it. Call us at (888) 516-0008 to explore the possibilities.
No, if Forza is cleaning your roof. Our cleaning system avoids destructive high-pressure washing. Our cleaning method preserves your manufacturer warranty. Pressure washing can affect shingle warranty coverage by removing granules and damaging the asphalt and fiberglass matting. Our process cleans very effectively while following roof-specific procedures. We've applied our process on over 1,500 roofs. We use roof- and property-protection procedures on every project.
Yes — cedar shake roofs are one of our specialties. Cedar requires a different approach than asphalt because it's a natural, porous wood that can be damaged by pressure and bleach. We use a cedar-safe formulation applied at very low pressure that kills bio-growth without harming the wood fibers. See our Cedar Roof Cleaning page for more details.
Yes. We clean commercial roofs of all types — EPDM, TPO, metal, tile, and asphalt — for apartment complexes, office buildings, churches, warehouses, and retail properties throughout Central Ohio. Commercial jobs are quoted individually based on size and access requirements.
📞
Still Have Questions?
Call us directly — we're happy to answer any question about your specific roof.